svn merge ^/branches/released .

13 files changed, 2208 insertions, 2169 deletions

diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp
index 5e1851c11..d7e54d823 100644
--- a/mesalib/src/glsl/ast_to_hir.cpp
+++ b/mesalib/src/glsl/ast_to_hir.cpp
@@ -848,6 +848,36 @@ do_comparison(void *mem_ctx, int operation, ir_rvalue *op0, ir_rvalue *op1)
    return cmp;

 }

 

+/* For logical operations, we want to ensure that the operands are

+ * scalar booleans.  If it isn't, emit an error and return a constant

+ * boolean to avoid triggering cascading error messages.

+ */

+ir_rvalue *

+get_scalar_boolean_operand(exec_list *instructions,

+			   struct _mesa_glsl_parse_state *state,

+			   ast_expression *parent_expr,

+			   int operand,

+			   const char *operand_name,

+			   bool *error_emitted)

+{

+   ast_expression *expr = parent_expr->subexpressions[operand];

+   void *ctx = state;

+   ir_rvalue *val = expr->hir(instructions, state);

+

+   if (val->type->is_boolean() && val->type->is_scalar())

+      return val;

+

+   if (!*error_emitted) {

+      YYLTYPE loc = expr->get_location();

+      _mesa_glsl_error(&loc, state, "%s of `%s' must be scalar boolean",

+		       operand_name,

+		       parent_expr->operator_string(parent_expr->oper));

+      *error_emitted = true;

+   }

+

+   return new(ctx) ir_constant(true);

+}

+

 ir_rvalue *

 ast_expression::hir(exec_list *instructions,

 		    struct _mesa_glsl_parse_state *state)

@@ -1043,10 +1073,14 @@ ast_expression::hir(exec_list *instructions,
 	 error_emitted = true;

       }

 

-      result = do_comparison(ctx, operations[this->oper], op[0], op[1]);

-      type = glsl_type::bool_type;

+      if (error_emitted) {

+	 result = new(ctx) ir_constant(false);

+      } else {

+	 result = do_comparison(ctx, operations[this->oper], op[0], op[1]);

+	 assert(result->type == glsl_type::bool_type);

+	 type = glsl_type::bool_type;

+      }

 

-      assert(error_emitted || (result->type == glsl_type::bool_type));

       break;

 

    case ast_bit_and:

@@ -1079,29 +1113,16 @@ ast_expression::hir(exec_list *instructions,
       break;

 

    case ast_logic_and: {

-      op[0] = this->subexpressions[0]->hir(instructions, state);

-

-      if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) {

-	 YYLTYPE loc = this->subexpressions[0]->get_location();

-

-	 _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean",

-			  operator_string(this->oper));

-	 error_emitted = true;

-      }

+      exec_list rhs_instructions;

+      op[0] = get_scalar_boolean_operand(instructions, state, this, 0,

+					 "LHS", &error_emitted);

+      op[1] = get_scalar_boolean_operand(&rhs_instructions, state, this, 1,

+					 "RHS", &error_emitted);

 

       ir_constant *op0_const = op[0]->constant_expression_value();

       if (op0_const) {

 	 if (op0_const->value.b[0]) {

-	    op[1] = this->subexpressions[1]->hir(instructions, state);

-

-	    if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) {

-	       YYLTYPE loc = this->subexpressions[1]->get_location();

-

-	       _mesa_glsl_error(& loc, state,

-				"RHS of `%s' must be scalar boolean",

-				operator_string(this->oper));

-	       error_emitted = true;

-	    }

+	    instructions->append_list(&rhs_instructions);

 	    result = op[1];

 	 } else {

 	    result = op0_const;

@@ -1116,17 +1137,7 @@ ast_expression::hir(exec_list *instructions,
 	 ir_if *const stmt = new(ctx) ir_if(op[0]);

 	 instructions->push_tail(stmt);

 

-	 op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state);

-

-	 if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) {

-	    YYLTYPE loc = this->subexpressions[1]->get_location();

-

-	    _mesa_glsl_error(& loc, state,

-			     "RHS of `%s' must be scalar boolean",

-			     operator_string(this->oper));

-	    error_emitted = true;

-	 }

-

+	 stmt->then_instructions.append_list(&rhs_instructions);

 	 ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp);

 	 ir_assignment *const then_assign =

 	    new(ctx) ir_assignment(then_deref, op[1], NULL);

@@ -1144,31 +1155,17 @@ ast_expression::hir(exec_list *instructions,
    }

 

    case ast_logic_or: {

-      op[0] = this->subexpressions[0]->hir(instructions, state);

-

-      if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) {

-	 YYLTYPE loc = this->subexpressions[0]->get_location();

-

-	 _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean",

-			  operator_string(this->oper));

-	 error_emitted = true;

-      }

+      exec_list rhs_instructions;

+      op[0] = get_scalar_boolean_operand(instructions, state, this, 0,

+					 "LHS", &error_emitted);

+      op[1] = get_scalar_boolean_operand(&rhs_instructions, state, this, 1,

+					 "RHS", &error_emitted);

 

       ir_constant *op0_const = op[0]->constant_expression_value();

       if (op0_const) {

 	 if (op0_const->value.b[0]) {

 	    result = op0_const;

 	 } else {

-	    op[1] = this->subexpressions[1]->hir(instructions, state);

-

-	    if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) {

-	       YYLTYPE loc = this->subexpressions[1]->get_location();

-

-	       _mesa_glsl_error(& loc, state,

-				"RHS of `%s' must be scalar boolean",

-				operator_string(this->oper));

-	       error_emitted = true;

-	    }

 	    result = op[1];

 	 }

 	 type = glsl_type::bool_type;

@@ -1181,21 +1178,12 @@ ast_expression::hir(exec_list *instructions,
 	 ir_if *const stmt = new(ctx) ir_if(op[0]);

 	 instructions->push_tail(stmt);

 

-	 op[1] = this->subexpressions[1]->hir(&stmt->else_instructions, state);

-

-	 if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) {

-	    YYLTYPE loc = this->subexpressions[1]->get_location();

-

-	    _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean",

-			     operator_string(this->oper));

-	    error_emitted = true;

-	 }

-

 	 ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp);

 	 ir_assignment *const then_assign =

 	    new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL);

 	 stmt->then_instructions.push_tail(then_assign);

 

+	 stmt->else_instructions.append_list(&rhs_instructions);

 	 ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp);

 	 ir_assignment *const else_assign =

 	    new(ctx) ir_assignment(else_deref, op[1], NULL);

@@ -1208,9 +1196,16 @@ ast_expression::hir(exec_list *instructions,
    }

 

    case ast_logic_xor:

-      op[0] = this->subexpressions[0]->hir(instructions, state);

-      op[1] = this->subexpressions[1]->hir(instructions, state);

-

+      /* From page 33 (page 39 of the PDF) of the GLSL 1.10 spec:

+       *

+       *    "The logical binary operators and (&&), or ( | | ), and

+       *     exclusive or (^^). They operate only on two Boolean

+       *     expressions and result in a Boolean expression."

+       */

+      op[0] = get_scalar_boolean_operand(instructions, state, this, 0, "LHS",

+					 &error_emitted);

+      op[1] = get_scalar_boolean_operand(instructions, state, this, 1, "RHS",

+					 &error_emitted);

 

       result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type,

 				      op[0], op[1]);

@@ -1218,15 +1213,8 @@ ast_expression::hir(exec_list *instructions,
       break;

 

    case ast_logic_not:

-      op[0] = this->subexpressions[0]->hir(instructions, state);

-

-      if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) {

-	 YYLTYPE loc = this->subexpressions[0]->get_location();

-

-	 _mesa_glsl_error(& loc, state,

-			  "operand of `!' must be scalar boolean");

-	 error_emitted = true;

-      }

+      op[0] = get_scalar_boolean_operand(instructions, state, this, 0,

+					 "operand", &error_emitted);

 

       result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type,

 				      op[0], NULL);

@@ -1313,20 +1301,14 @@ ast_expression::hir(exec_list *instructions,
    }

 

    case ast_conditional: {

-      op[0] = this->subexpressions[0]->hir(instructions, state);

-

       /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec:

        *

        *    "The ternary selection operator (?:). It operates on three

        *    expressions (exp1 ? exp2 : exp3). This operator evaluates the

        *    first expression, which must result in a scalar Boolean."

        */

-      if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) {

-	 YYLTYPE loc = this->subexpressions[0]->get_location();

-

-	 _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean");

-	 error_emitted = true;

-      }

+      op[0] = get_scalar_boolean_operand(instructions, state, this, 0,

+					 "condition", &error_emitted);

 

       /* The :? operator is implemented by generating an anonymous temporary

        * followed by an if-statement.  The last instruction in each branch of

diff --git a/mesalib/src/glsl/glsl_parser_extras.cpp b/mesalib/src/glsl/glsl_parser_extras.cpp
index 1e8123491..823e75167 100644
--- a/mesalib/src/glsl/glsl_parser_extras.cpp
+++ b/mesalib/src/glsl/glsl_parser_extras.cpp
@@ -768,7 +768,7 @@ do_common_optimization(exec_list *ir, bool linked, unsigned max_unroll_iteration
    progress = do_if_simplification(ir) || progress;

    progress = do_discard_simplification(ir) || progress;

    progress = do_copy_propagation(ir) || progress;

-   /*progress = do_copy_propagation_elements(ir) || progress;*/

+   progress = do_copy_propagation_elements(ir) || progress;

    if (linked)

       progress = do_dead_code(ir) || progress;

    else

diff --git a/mesalib/src/glsl/opt_copy_propagation_elements.cpp b/mesalib/src/glsl/opt_copy_propagation_elements.cpp
index 8541d9a8e..580c10f27 100644
--- a/mesalib/src/glsl/opt_copy_propagation_elements.cpp
+++ b/mesalib/src/glsl/opt_copy_propagation_elements.cpp
@@ -1,458 +1,467 @@
-/*
- * Copyright © 2010 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-/**
- * \file opt_copy_propagation_elements.cpp
- *
- * Replaces usage of recently-copied components of variables with the
- * previous copy of the variable.
- *
- * This pass can be compared with opt_copy_propagation, which operands
- * on arbitrary whole-variable copies.  However, in order to handle
- * the copy propagation of swizzled variables or writemasked writes,
- * we want to track things on a channel-wise basis.  I found that
- * trying to mix the swizzled/writemasked support here with the
- * whole-variable stuff in opt_copy_propagation.cpp just made a mess,
- * so this is separate despite the ACP handling being somewhat
- * similar.
- *
- * This should reduce the number of MOV instructions in the generated
- * programs unless copy propagation is also done on the LIR, and may
- * help anyway by triggering other optimizations that live in the HIR.
- */
-
-#include "ir.h"
-#include "ir_rvalue_visitor.h"
-#include "ir_basic_block.h"
-#include "ir_optimization.h"
-#include "glsl_types.h"
-
-static bool debug = false;
-
-class acp_entry : public exec_node
-{
-public:
-   acp_entry(ir_variable *lhs, ir_variable *rhs, int write_mask, int swizzle[4])
-   {
-      this->lhs = lhs;
-      this->rhs = rhs;
-      this->write_mask = write_mask;
-      memcpy(this->swizzle, swizzle, sizeof(this->swizzle));
-   }
-
-   acp_entry(acp_entry *a)
-   {
-      this->lhs = a->lhs;
-      this->rhs = a->rhs;
-      this->write_mask = a->write_mask;
-      memcpy(this->swizzle, a->swizzle, sizeof(this->swizzle));
-   }
-
-   ir_variable *lhs;
-   ir_variable *rhs;
-   unsigned int write_mask;
-   int swizzle[4];
-};
-
-
-class kill_entry : public exec_node
-{
-public:
-   kill_entry(ir_variable *var, int write_mask)
-   {
-      this->var = var;
-      this->write_mask = write_mask;
-   }
-
-   ir_variable *var;
-   unsigned int write_mask;
-};
-
-class ir_copy_propagation_elements_visitor : public ir_rvalue_visitor {
-public:
-   ir_copy_propagation_elements_visitor()
-   {
-      this->progress = false;
-      this->mem_ctx = ralloc_context(NULL);
-      this->shader_mem_ctx = NULL;
-      this->acp = new(mem_ctx) exec_list;
-      this->kills = new(mem_ctx) exec_list;
-   }
-   ~ir_copy_propagation_elements_visitor()
-   {
-      ralloc_free(mem_ctx);
-   }
-
-   virtual ir_visitor_status visit_enter(class ir_loop *);
-   virtual ir_visitor_status visit_enter(class ir_function_signature *);
-   virtual ir_visitor_status visit_leave(class ir_assignment *);
-   virtual ir_visitor_status visit_enter(class ir_call *);
-   virtual ir_visitor_status visit_enter(class ir_if *);
-
-   void handle_rvalue(ir_rvalue **rvalue);
-
-   void add_copy(ir_assignment *ir);
-   void kill(kill_entry *k);
-   void handle_if_block(exec_list *instructions);
-
-   /** List of acp_entry: The available copies to propagate */
-   exec_list *acp;
-   /**
-    * List of kill_entry: The variables whose values were killed in this
-    * block.
-    */
-   exec_list *kills;
-
-   bool progress;
-
-   bool killed_all;
-
-   /* Context for our local data structures. */
-   void *mem_ctx;
-   /* Context for allocating new shader nodes. */
-   void *shader_mem_ctx;
-};
-
-ir_visitor_status
-ir_copy_propagation_elements_visitor::visit_enter(ir_function_signature *ir)
-{
-   /* Treat entry into a function signature as a completely separate
-    * block.  Any instructions at global scope will be shuffled into
-    * main() at link time, so they're irrelevant to us.
-    */
-   exec_list *orig_acp = this->acp;
-   exec_list *orig_kills = this->kills;
-   bool orig_killed_all = this->killed_all;
-
-   this->acp = new(mem_ctx) exec_list;
-   this->kills = new(mem_ctx) exec_list;
-   this->killed_all = false;
-
-   visit_list_elements(this, &ir->body);
-
-   this->kills = orig_kills;
-   this->acp = orig_acp;
-   this->killed_all = orig_killed_all;
-
-   return visit_continue_with_parent;
-}
-
-ir_visitor_status
-ir_copy_propagation_elements_visitor::visit_leave(ir_assignment *ir)
-{
-   ir_dereference_variable *lhs = ir->lhs->as_dereference_variable();
-
-   if (lhs && (lhs->type->is_scalar() || lhs->type->is_vector())) {
-      kill_entry *k = new(mem_ctx) kill_entry(lhs->var, ir->write_mask);
-      kill(k);
-   }
-
-   add_copy(ir);
-
-   return visit_continue;
-}
-
-/**
- * Replaces dereferences of ACP RHS variables with ACP LHS variables.
- *
- * This is where the actual copy propagation occurs.  Note that the
- * rewriting of ir_dereference means that the ir_dereference instance
- * must not be shared by multiple IR operations!
- */
-void
-ir_copy_propagation_elements_visitor::handle_rvalue(ir_rvalue **ir)
-{
-   int swizzle_chan[4];
-   ir_dereference_variable *deref_var;
-   ir_variable *source[4] = {NULL, NULL, NULL, NULL};
-   int source_chan[4];
-   int chans;
-
-   if (!*ir)
-      return;
-
-   ir_swizzle *swizzle = (*ir)->as_swizzle();
-   if (swizzle) {
-      deref_var = swizzle->val->as_dereference_variable();
-      if (!deref_var)
-	 return;
-
-      swizzle_chan[0] = swizzle->mask.x;
-      swizzle_chan[1] = swizzle->mask.y;
-      swizzle_chan[2] = swizzle->mask.z;
-      swizzle_chan[3] = swizzle->mask.w;
-      chans = swizzle->type->vector_elements;
-   } else {
-      deref_var = (*ir)->as_dereference_variable();
-      if (!deref_var)
-	 return;
-
-      swizzle_chan[0] = 0;
-      swizzle_chan[1] = 1;
-      swizzle_chan[2] = 2;
-      swizzle_chan[3] = 3;
-      chans = deref_var->type->vector_elements;
-   }
-
-   if (this->in_assignee)
-      return;
-
-   ir_variable *var = deref_var->var;
-
-   /* Try to find ACP entries covering swizzle_chan[], hoping they're
-    * the same source variable.
-    */
-   foreach_iter(exec_list_iterator, iter, *this->acp) {
-      acp_entry *entry = (acp_entry *)iter.get();
-
-      if (var == entry->lhs) {
-	 for (int c = 0; c < chans; c++) {
-	    if (entry->write_mask & (1 << swizzle_chan[c])) {
-	       source[c] = entry->rhs;
-	       source_chan[c] = entry->swizzle[swizzle_chan[c]];
-	    }
-	 }
-      }
-   }
-
-   /* Make sure all channels are copying from the same source variable. */
-   if (!source[0])
-      return;
-   for (int c = 1; c < chans; c++) {
-      if (source[c] != source[0])
-	 return;
-   }
-
-   if (!shader_mem_ctx)
-      shader_mem_ctx = ralloc_parent(deref_var);
-
-   if (debug) {
-      printf("Copy propagation from:\n");
-      (*ir)->print();
-   }
-
-   deref_var = new(shader_mem_ctx) ir_dereference_variable(source[0]);
-   *ir = new(shader_mem_ctx) ir_swizzle(deref_var,
-					source_chan[0],
-					source_chan[1],
-					source_chan[2],
-					source_chan[3],
-					chans);
-
-   if (debug) {
-      printf("to:\n");
-      (*ir)->print();
-      printf("\n");
-   }
-}
-
-
-ir_visitor_status
-ir_copy_propagation_elements_visitor::visit_enter(ir_call *ir)
-{
-   /* Do copy propagation on call parameters, but skip any out params */
-   exec_list_iterator sig_param_iter = ir->get_callee()->parameters.iterator();
-   foreach_iter(exec_list_iterator, iter, ir->actual_parameters) {
-      ir_variable *sig_param = (ir_variable *)sig_param_iter.get();
-      ir_instruction *ir = (ir_instruction *)iter.get();
-      if (sig_param->mode != ir_var_out && sig_param->mode != ir_var_inout) {
-         ir->accept(this);
-      }
-      sig_param_iter.next();
-   }
-
-   /* Since we're unlinked, we don't (necessarily) know the side effects of
-    * this call.  So kill all copies.
-    */
-   acp->make_empty();
-   this->killed_all = true;
-
-   return visit_continue_with_parent;
-}
-
-void
-ir_copy_propagation_elements_visitor::handle_if_block(exec_list *instructions)
-{
-   exec_list *orig_acp = this->acp;
-   exec_list *orig_kills = this->kills;
-   bool orig_killed_all = this->killed_all;
-
-   this->acp = new(mem_ctx) exec_list;
-   this->kills = new(mem_ctx) exec_list;
-   this->killed_all = false;
-
-   /* Populate the initial acp with a copy of the original */
-   foreach_iter(exec_list_iterator, iter, *orig_acp) {
-      acp_entry *a = (acp_entry *)iter.get();
-      this->acp->push_tail(new(this->mem_ctx) acp_entry(a));
-   }
-
-   visit_list_elements(this, instructions);
-
-   if (this->killed_all) {
-      orig_acp->make_empty();
-   }
-
-   exec_list *new_kills = this->kills;
-   this->kills = orig_kills;
-   this->acp = orig_acp;
-   this->killed_all = this->killed_all || orig_killed_all;
-
-   /* Move the new kills into the parent block's list, removing them
-    * from the parent's ACP list in the process.
-    */
-   foreach_list_safe(node, new_kills) {
-      kill_entry *k = (kill_entry *)node;
-      kill(k);
-   }
-}
-
-ir_visitor_status
-ir_copy_propagation_elements_visitor::visit_enter(ir_if *ir)
-{
-   ir->condition->accept(this);
-
-   handle_if_block(&ir->then_instructions);
-   handle_if_block(&ir->else_instructions);
-
-   /* handle_if_block() already descended into the children. */
-   return visit_continue_with_parent;
-}
-
-ir_visitor_status
-ir_copy_propagation_elements_visitor::visit_enter(ir_loop *ir)
-{
-   exec_list *orig_acp = this->acp;
-   exec_list *orig_kills = this->kills;
-   bool orig_killed_all = this->killed_all;
-
-   /* FINISHME: For now, the initial acp for loops is totally empty.
-    * We could go through once, then go through again with the acp
-    * cloned minus the killed entries after the first run through.
-    */
-   this->acp = new(mem_ctx) exec_list;
-   this->kills = new(mem_ctx) exec_list;
-   this->killed_all = false;
-
-   visit_list_elements(this, &ir->body_instructions);
-
-   if (this->killed_all) {
-      orig_acp->make_empty();
-   }
-
-   exec_list *new_kills = this->kills;
-   this->kills = orig_kills;
-   this->acp = orig_acp;
-   this->killed_all = this->killed_all || orig_killed_all;
-
-   foreach_list_safe(node, new_kills) {
-      kill_entry *k = (kill_entry *)node;
-      kill(k);
-   }
-
-   /* already descended into the children. */
-   return visit_continue_with_parent;
-}
-
-/* Remove any entries currently in the ACP for this kill. */
-void
-ir_copy_propagation_elements_visitor::kill(kill_entry *k)
-{
-   foreach_list_safe(node, acp) {
-      acp_entry *entry = (acp_entry *)node;
-
-      if (entry->lhs == k->var) {
-	 entry->write_mask = entry->write_mask & ~k->write_mask;
-	 if (entry->write_mask == 0)
-	    entry->remove();
-      }
-      if (entry->rhs == k->var) {
-	 entry->remove();
-      }
-   }
-
-   /* If we were on a list, remove ourselves before inserting */
-   if (k->next)
-      k->remove();
-
-   this->kills->push_tail(k);
-}
-
-/**
- * Adds directly-copied channels between vector variables to the available
- * copy propagation list.
- */
-void
-ir_copy_propagation_elements_visitor::add_copy(ir_assignment *ir)
-{
-   acp_entry *entry;
-   int orig_swizzle[4] = {0, 1, 2, 3};
-   int swizzle[4];
-
-   if (ir->condition)
-      return;
-
-   ir_dereference_variable *lhs = ir->lhs->as_dereference_variable();
-   if (!lhs || !(lhs->type->is_scalar() || lhs->type->is_vector()))
-      return;
-
-   ir_dereference_variable *rhs = ir->rhs->as_dereference_variable();
-   if (!rhs) {
-      ir_swizzle *swiz = ir->rhs->as_swizzle();
-      if (!swiz)
-	 return;
-
-      rhs = swiz->val->as_dereference_variable();
-      if (!rhs)
-	 return;
-
-      orig_swizzle[0] = swiz->mask.x;
-      orig_swizzle[1] = swiz->mask.y;
-      orig_swizzle[2] = swiz->mask.z;
-      orig_swizzle[3] = swiz->mask.w;
-   }
-
-   /* Move the swizzle channels out to the positions they match in the
-    * destination.  We don't want to have to rewrite the swizzle[]
-    * array every time we clear a bit of the write_mask.
-    */
-   int j = 0;
-   for (int i = 0; i < 4; i++) {
-      if (ir->write_mask & (1 << i))
-	 swizzle[i] = orig_swizzle[j++];
-   }
-
-   entry = new(this->mem_ctx) acp_entry(lhs->var, rhs->var, ir->write_mask,
-					swizzle);
-   this->acp->push_tail(entry);
-}
-
-bool
-do_copy_propagation_elements(exec_list *instructions)
-{
-   ir_copy_propagation_elements_visitor v;
-
-   visit_list_elements(&v, instructions);
-
-   return v.progress;
-}
+/*

+ * Copyright © 2010 Intel Corporation

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the next

+ * paragraph) shall be included in all copies or substantial portions of the

+ * Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ */

+

+/**

+ * \file opt_copy_propagation_elements.cpp

+ *

+ * Replaces usage of recently-copied components of variables with the

+ * previous copy of the variable.

+ *

+ * This pass can be compared with opt_copy_propagation, which operands

+ * on arbitrary whole-variable copies.  However, in order to handle

+ * the copy propagation of swizzled variables or writemasked writes,

+ * we want to track things on a channel-wise basis.  I found that

+ * trying to mix the swizzled/writemasked support here with the

+ * whole-variable stuff in opt_copy_propagation.cpp just made a mess,

+ * so this is separate despite the ACP handling being somewhat

+ * similar.

+ *

+ * This should reduce the number of MOV instructions in the generated

+ * programs unless copy propagation is also done on the LIR, and may

+ * help anyway by triggering other optimizations that live in the HIR.

+ */

+

+#include "ir.h"

+#include "ir_rvalue_visitor.h"

+#include "ir_basic_block.h"

+#include "ir_optimization.h"

+#include "glsl_types.h"

+

+static bool debug = false;

+

+class acp_entry : public exec_node

+{

+public:

+   acp_entry(ir_variable *lhs, ir_variable *rhs, int write_mask, int swizzle[4])

+   {

+      this->lhs = lhs;

+      this->rhs = rhs;

+      this->write_mask = write_mask;

+      memcpy(this->swizzle, swizzle, sizeof(this->swizzle));

+   }

+

+   acp_entry(acp_entry *a)

+   {

+      this->lhs = a->lhs;

+      this->rhs = a->rhs;

+      this->write_mask = a->write_mask;

+      memcpy(this->swizzle, a->swizzle, sizeof(this->swizzle));

+   }

+

+   ir_variable *lhs;

+   ir_variable *rhs;

+   unsigned int write_mask;

+   int swizzle[4];

+};

+

+

+class kill_entry : public exec_node

+{

+public:

+   kill_entry(ir_variable *var, int write_mask)

+   {

+      this->var = var;

+      this->write_mask = write_mask;

+   }

+

+   ir_variable *var;

+   unsigned int write_mask;

+};

+

+class ir_copy_propagation_elements_visitor : public ir_rvalue_visitor {

+public:

+   ir_copy_propagation_elements_visitor()

+   {

+      this->progress = false;

+      this->mem_ctx = ralloc_context(NULL);

+      this->shader_mem_ctx = NULL;

+      this->acp = new(mem_ctx) exec_list;

+      this->kills = new(mem_ctx) exec_list;

+   }

+   ~ir_copy_propagation_elements_visitor()

+   {

+      ralloc_free(mem_ctx);

+   }

+

+   virtual ir_visitor_status visit_enter(class ir_loop *);

+   virtual ir_visitor_status visit_enter(class ir_function_signature *);

+   virtual ir_visitor_status visit_leave(class ir_assignment *);

+   virtual ir_visitor_status visit_enter(class ir_call *);

+   virtual ir_visitor_status visit_enter(class ir_if *);

+

+   void handle_rvalue(ir_rvalue **rvalue);

+

+   void add_copy(ir_assignment *ir);

+   void kill(kill_entry *k);

+   void handle_if_block(exec_list *instructions);

+

+   /** List of acp_entry: The available copies to propagate */

+   exec_list *acp;

+   /**

+    * List of kill_entry: The variables whose values were killed in this

+    * block.

+    */

+   exec_list *kills;

+

+   bool progress;

+

+   bool killed_all;

+

+   /* Context for our local data structures. */

+   void *mem_ctx;

+   /* Context for allocating new shader nodes. */

+   void *shader_mem_ctx;

+};

+

+ir_visitor_status

+ir_copy_propagation_elements_visitor::visit_enter(ir_function_signature *ir)

+{

+   /* Treat entry into a function signature as a completely separate

+    * block.  Any instructions at global scope will be shuffled into

+    * main() at link time, so they're irrelevant to us.

+    */

+   exec_list *orig_acp = this->acp;

+   exec_list *orig_kills = this->kills;

+   bool orig_killed_all = this->killed_all;

+

+   this->acp = new(mem_ctx) exec_list;

+   this->kills = new(mem_ctx) exec_list;

+   this->killed_all = false;

+

+   visit_list_elements(this, &ir->body);

+

+   this->kills = orig_kills;

+   this->acp = orig_acp;

+   this->killed_all = orig_killed_all;

+

+   return visit_continue_with_parent;

+}

+

+ir_visitor_status

+ir_copy_propagation_elements_visitor::visit_leave(ir_assignment *ir)

+{

+   ir_dereference_variable *lhs = ir->lhs->as_dereference_variable();

+   ir_variable *var = ir->lhs->variable_referenced();

+

+   if (var->type->is_scalar() || var->type->is_vector()) {

+      kill_entry *k;

+

+      if (lhs)

+	 k = new(mem_ctx) kill_entry(var, ir->write_mask);

+      else

+	 k = new(mem_ctx) kill_entry(var, ~0);

+

+      kill(k);

+   }

+

+   add_copy(ir);

+

+   return visit_continue;

+}

+

+/**

+ * Replaces dereferences of ACP RHS variables with ACP LHS variables.

+ *

+ * This is where the actual copy propagation occurs.  Note that the

+ * rewriting of ir_dereference means that the ir_dereference instance

+ * must not be shared by multiple IR operations!

+ */

+void

+ir_copy_propagation_elements_visitor::handle_rvalue(ir_rvalue **ir)

+{

+   int swizzle_chan[4];

+   ir_dereference_variable *deref_var;

+   ir_variable *source[4] = {NULL, NULL, NULL, NULL};

+   int source_chan[4];

+   int chans;

+

+   if (!*ir)

+      return;

+

+   ir_swizzle *swizzle = (*ir)->as_swizzle();

+   if (swizzle) {

+      deref_var = swizzle->val->as_dereference_variable();

+      if (!deref_var)

+	 return;

+

+      swizzle_chan[0] = swizzle->mask.x;

+      swizzle_chan[1] = swizzle->mask.y;

+      swizzle_chan[2] = swizzle->mask.z;

+      swizzle_chan[3] = swizzle->mask.w;

+      chans = swizzle->type->vector_elements;

+   } else {

+      deref_var = (*ir)->as_dereference_variable();

+      if (!deref_var)

+	 return;

+

+      swizzle_chan[0] = 0;

+      swizzle_chan[1] = 1;

+      swizzle_chan[2] = 2;

+      swizzle_chan[3] = 3;

+      chans = deref_var->type->vector_elements;

+   }

+

+   if (this->in_assignee)

+      return;

+

+   ir_variable *var = deref_var->var;

+

+   /* Try to find ACP entries covering swizzle_chan[], hoping they're

+    * the same source variable.

+    */

+   foreach_iter(exec_list_iterator, iter, *this->acp) {

+      acp_entry *entry = (acp_entry *)iter.get();

+

+      if (var == entry->lhs) {

+	 for (int c = 0; c < chans; c++) {

+	    if (entry->write_mask & (1 << swizzle_chan[c])) {

+	       source[c] = entry->rhs;

+	       source_chan[c] = entry->swizzle[swizzle_chan[c]];

+	    }

+	 }

+      }

+   }

+

+   /* Make sure all channels are copying from the same source variable. */

+   if (!source[0])

+      return;

+   for (int c = 1; c < chans; c++) {

+      if (source[c] != source[0])

+	 return;

+   }

+

+   if (!shader_mem_ctx)

+      shader_mem_ctx = ralloc_parent(deref_var);

+

+   if (debug) {

+      printf("Copy propagation from:\n");

+      (*ir)->print();

+   }

+

+   deref_var = new(shader_mem_ctx) ir_dereference_variable(source[0]);

+   *ir = new(shader_mem_ctx) ir_swizzle(deref_var,

+					source_chan[0],

+					source_chan[1],

+					source_chan[2],

+					source_chan[3],

+					chans);

+

+   if (debug) {

+      printf("to:\n");

+      (*ir)->print();

+      printf("\n");

+   }

+}

+

+

+ir_visitor_status

+ir_copy_propagation_elements_visitor::visit_enter(ir_call *ir)

+{

+   /* Do copy propagation on call parameters, but skip any out params */

+   exec_list_iterator sig_param_iter = ir->get_callee()->parameters.iterator();

+   foreach_iter(exec_list_iterator, iter, ir->actual_parameters) {

+      ir_variable *sig_param = (ir_variable *)sig_param_iter.get();

+      ir_instruction *ir = (ir_instruction *)iter.get();

+      if (sig_param->mode != ir_var_out && sig_param->mode != ir_var_inout) {

+         ir->accept(this);

+      }

+      sig_param_iter.next();

+   }

+

+   /* Since we're unlinked, we don't (necessarily) know the side effects of

+    * this call.  So kill all copies.

+    */

+   acp->make_empty();

+   this->killed_all = true;

+

+   return visit_continue_with_parent;

+}

+

+void

+ir_copy_propagation_elements_visitor::handle_if_block(exec_list *instructions)

+{

+   exec_list *orig_acp = this->acp;

+   exec_list *orig_kills = this->kills;

+   bool orig_killed_all = this->killed_all;

+

+   this->acp = new(mem_ctx) exec_list;

+   this->kills = new(mem_ctx) exec_list;

+   this->killed_all = false;

+

+   /* Populate the initial acp with a copy of the original */

+   foreach_iter(exec_list_iterator, iter, *orig_acp) {

+      acp_entry *a = (acp_entry *)iter.get();

+      this->acp->push_tail(new(this->mem_ctx) acp_entry(a));

+   }

+

+   visit_list_elements(this, instructions);

+

+   if (this->killed_all) {

+      orig_acp->make_empty();

+   }

+

+   exec_list *new_kills = this->kills;

+   this->kills = orig_kills;

+   this->acp = orig_acp;

+   this->killed_all = this->killed_all || orig_killed_all;

+

+   /* Move the new kills into the parent block's list, removing them

+    * from the parent's ACP list in the process.

+    */

+   foreach_list_safe(node, new_kills) {

+      kill_entry *k = (kill_entry *)node;

+      kill(k);

+   }

+}

+

+ir_visitor_status

+ir_copy_propagation_elements_visitor::visit_enter(ir_if *ir)

+{

+   ir->condition->accept(this);

+

+   handle_if_block(&ir->then_instructions);

+   handle_if_block(&ir->else_instructions);

+

+   /* handle_if_block() already descended into the children. */

+   return visit_continue_with_parent;

+}

+

+ir_visitor_status

+ir_copy_propagation_elements_visitor::visit_enter(ir_loop *ir)

+{

+   exec_list *orig_acp = this->acp;

+   exec_list *orig_kills = this->kills;

+   bool orig_killed_all = this->killed_all;

+

+   /* FINISHME: For now, the initial acp for loops is totally empty.

+    * We could go through once, then go through again with the acp

+    * cloned minus the killed entries after the first run through.

+    */

+   this->acp = new(mem_ctx) exec_list;

+   this->kills = new(mem_ctx) exec_list;

+   this->killed_all = false;

+

+   visit_list_elements(this, &ir->body_instructions);

+

+   if (this->killed_all) {

+      orig_acp->make_empty();

+   }

+

+   exec_list *new_kills = this->kills;

+   this->kills = orig_kills;

+   this->acp = orig_acp;

+   this->killed_all = this->killed_all || orig_killed_all;

+

+   foreach_list_safe(node, new_kills) {

+      kill_entry *k = (kill_entry *)node;

+      kill(k);

+   }

+

+   /* already descended into the children. */

+   return visit_continue_with_parent;

+}

+

+/* Remove any entries currently in the ACP for this kill. */

+void

+ir_copy_propagation_elements_visitor::kill(kill_entry *k)

+{

+   foreach_list_safe(node, acp) {

+      acp_entry *entry = (acp_entry *)node;

+

+      if (entry->lhs == k->var) {

+	 entry->write_mask = entry->write_mask & ~k->write_mask;

+	 if (entry->write_mask == 0) {

+	    entry->remove();

+	    continue;

+	 }

+      }

+      if (entry->rhs == k->var) {

+	 entry->remove();

+      }

+   }

+

+   /* If we were on a list, remove ourselves before inserting */

+   if (k->next)

+      k->remove();

+

+   this->kills->push_tail(k);

+}

+

+/**

+ * Adds directly-copied channels between vector variables to the available

+ * copy propagation list.

+ */

+void

+ir_copy_propagation_elements_visitor::add_copy(ir_assignment *ir)

+{

+   acp_entry *entry;

+   int orig_swizzle[4] = {0, 1, 2, 3};

+   int swizzle[4];

+

+   if (ir->condition)

+      return;

+

+   ir_dereference_variable *lhs = ir->lhs->as_dereference_variable();

+   if (!lhs || !(lhs->type->is_scalar() || lhs->type->is_vector()))

+      return;

+

+   ir_dereference_variable *rhs = ir->rhs->as_dereference_variable();

+   if (!rhs) {

+      ir_swizzle *swiz = ir->rhs->as_swizzle();

+      if (!swiz)

+	 return;

+

+      rhs = swiz->val->as_dereference_variable();

+      if (!rhs)

+	 return;

+

+      orig_swizzle[0] = swiz->mask.x;

+      orig_swizzle[1] = swiz->mask.y;

+      orig_swizzle[2] = swiz->mask.z;

+      orig_swizzle[3] = swiz->mask.w;

+   }

+

+   /* Move the swizzle channels out to the positions they match in the

+    * destination.  We don't want to have to rewrite the swizzle[]

+    * array every time we clear a bit of the write_mask.

+    */

+   int j = 0;

+   for (int i = 0; i < 4; i++) {

+      if (ir->write_mask & (1 << i))

+	 swizzle[i] = orig_swizzle[j++];

+   }

+

+   entry = new(this->mem_ctx) acp_entry(lhs->var, rhs->var, ir->write_mask,

+					swizzle);

+   this->acp->push_tail(entry);

+}

+

+bool

+do_copy_propagation_elements(exec_list *instructions)

+{

+   ir_copy_propagation_elements_visitor v;

+

+   visit_list_elements(&v, instructions);

+

+   return v.progress;

+}

diff --git a/mesalib/src/mesa/main/context.c b/mesalib/src/mesa/main/context.c
index 4f6712a10..56a60fb12 100644
--- a/mesalib/src/mesa/main/context.c
+++ b/mesalib/src/mesa/main/context.c
@@ -191,7 +191,8 @@ _mesa_notifySwapBuffers(struct gl_context *ctx)
  * is acceptable but the actual depth type will be GLushort or GLuint as

  * needed.

  * \param stencilBits requested minimum bits per stencil buffer value

- * \param accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits number of bits per color component in accum buffer.

+ * \param accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits number

+ * of bits per color component in accum buffer.

  * \param indexBits number of bits per pixel if \p rgbFlag is GL_FALSE

  * \param redBits number of bits per color component in frame buffer for RGB(A)

  * mode.  We always use 8 in core Mesa though.

@@ -200,8 +201,8 @@ _mesa_notifySwapBuffers(struct gl_context *ctx)
  * \param alphaBits same as above.

  * \param numSamples not really used.

  * 

- * \return pointer to new struct gl_config or NULL if requested parameters can't be

- * met.

+ * \return pointer to new struct gl_config or NULL if requested parameters

+ * can't be met.

  *

  * \note Need to add params for level and numAuxBuffers (at least)

  */

@@ -1186,7 +1187,8 @@ _mesa_destroy_context( struct gl_context *ctx )
  * structures.

  */

 void

-_mesa_copy_context( const struct gl_context *src, struct gl_context *dst, GLuint mask )

+_mesa_copy_context( const struct gl_context *src, struct gl_context *dst,

+                    GLuint mask )

 {

    if (mask & GL_ACCUM_BUFFER_BIT) {

       /* OK to memcpy */

diff --git a/mesalib/src/mesa/main/context.h b/mesalib/src/mesa/main/context.h
index ae4d6f7da..2e9fbc77a 100644
--- a/mesalib/src/mesa/main/context.h
+++ b/mesalib/src/mesa/main/context.h
@@ -30,16 +30,16 @@
  * There are three large Mesa data types/classes which are meant to be

  * used by device drivers:

  * - struct gl_context: this contains the Mesa rendering state

- * - struct gl_config:  this describes the color buffer (RGB vs. ci), whether or not

- *   there's a depth buffer, stencil buffer, etc.

- * - struct gl_framebuffer:  contains pointers to the depth buffer, stencil buffer,

- *   accum buffer and alpha buffers.

+ * - struct gl_config:  this describes the color buffer (RGB vs. ci), whether

+ *   or not there's a depth buffer, stencil buffer, etc.

+ * - struct gl_framebuffer:  contains pointers to the depth buffer, stencil

+ *   buffer, accum buffer and alpha buffers.

  *

  * These types should be encapsulated by corresponding device driver

  * data types.  See xmesa.h and xmesaP.h for an example.

  *

- * In OOP terms, struct gl_context, struct gl_config, and struct gl_framebuffer are base classes

- * which the device driver must derive from.

+ * In OOP terms, struct gl_context, struct gl_config, and struct gl_framebuffer

+ * are base classes which the device driver must derive from.

  *

  * The following functions create and destroy these data types.

  */

diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c
index 6d098788b..da55c61f9 100644
--- a/mesalib/src/mesa/main/extensions.c
+++ b/mesalib/src/mesa/main/extensions.c
@@ -262,6 +262,7 @@ static const struct extension extension_table[] = {
    { "GL_APPLE_packed_pixels",                     o(APPLE_packed_pixels),                     GL,             2002 },

    { "GL_APPLE_vertex_array_object",               o(APPLE_vertex_array_object),               GL,             2002 },

    { "GL_ATI_blend_equation_separate",             o(EXT_blend_equation_separate),             GL,             2003 },

+   { "GL_ATI_draw_buffers",                        o(ARB_draw_buffers),                        GL,             2002 },

    { "GL_ATI_envmap_bumpmap",                      o(ATI_envmap_bumpmap),                      GL,             2001 },

    { "GL_ATI_fragment_shader",                     o(ATI_fragment_shader),                     GL,             2001 },

    { "GL_ATI_separate_stencil",                    o(ATI_separate_stencil),                    GL,             2006 },

diff --git a/mesalib/src/mesa/main/samplerobj.c b/mesalib/src/mesa/main/samplerobj.c
index 55acb6d1f..2561f04bd 100644
--- a/mesalib/src/mesa/main/samplerobj.c
+++ b/mesalib/src/mesa/main/samplerobj.c
@@ -1,1355 +1,1355 @@
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2011  VMware, Inc.  All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/**
- * \file samplerobj.c
- * \brief Functions for the GL_ARB_sampler_objects extension.
- * \author Brian Paul
- */
-
-
-#include "main/glheader.h"
-#include "main/context.h"
-#include "main/dispatch.h"
-#include "main/enums.h"
-#include "main/hash.h"
-#include "main/macros.h"
-#include "main/mfeatures.h"
-#include "main/mtypes.h"
-#include "main/samplerobj.h"
-
-
-static struct gl_sampler_object *
-_mesa_lookup_samplerobj(struct gl_context *ctx, GLuint name)
-{
-   if (name == 0)
-      return NULL;
-   else
-      return (struct gl_sampler_object *)
-         _mesa_HashLookup(ctx->Shared->SamplerObjects, name);
-}
-
-
-/**
- * Handle reference counting.
- */
-void
-_mesa_reference_sampler_object(struct gl_context *ctx,
-                               struct gl_sampler_object **ptr,
-                               struct gl_sampler_object *samp)
-{
-   if (*ptr == samp)
-      return;
-
-   if (*ptr) {
-      /* Unreference the old buffer */
-      GLboolean deleteFlag = GL_FALSE;
-      struct gl_sampler_object *oldSamp = *ptr;
-
-      /*_glthread_LOCK_MUTEX(oldSamp->Mutex);*/
-      ASSERT(oldSamp->RefCount > 0);
-      oldSamp->RefCount--;
-#if 0
-      printf("SamplerObj %p %d DECR to %d\n",
-             (void *) oldSamp, oldSamp->Name, oldSamp->RefCount);
-#endif
-      deleteFlag = (oldSamp->RefCount == 0);
-      /*_glthread_UNLOCK_MUTEX(oldSamp->Mutex);*/
-
-      if (deleteFlag) {
-	 ASSERT(ctx->Driver.DeleteSamplerObject);
-         ctx->Driver.DeleteSamplerObject(ctx, oldSamp);
-      }
-
-      *ptr = NULL;
-   }
-   ASSERT(!*ptr);
-
-   if (samp) {
-      /* reference new sampler */
-      /*_glthread_LOCK_MUTEX(samp->Mutex);*/
-      if (samp->RefCount == 0) {
-         /* this buffer's being deleted (look just above) */
-         /* Not sure this can every really happen.  Warn if it does. */
-         _mesa_problem(NULL, "referencing deleted buffer object");
-         *ptr = NULL;
-      }
-      else {
-         samp->RefCount++;
-#if 0
-         printf("SamplerObj %p %d INCR to %d\n",
-                (void *) samp, samp->Name, samp->RefCount);
-#endif
-         *ptr = samp;
-      }
-      /*_glthread_UNLOCK_MUTEX(samp->Mutex);*/
-   }
-}
-
-
-/**
- * Initialize the fields of the given sampler object.
- */
-void
-_mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name)
-{
-   sampObj->Name = name;
-   sampObj->RefCount = 1;
-   sampObj->WrapS = GL_REPEAT;
-   sampObj->WrapT = GL_REPEAT;
-   sampObj->WrapR = GL_REPEAT;
-   sampObj->MinFilter = GL_NEAREST_MIPMAP_LINEAR;
-   sampObj->MagFilter = GL_LINEAR;
-   sampObj->BorderColor.f[0] = 0.0;
-   sampObj->BorderColor.f[1] = 0.0;
-   sampObj->BorderColor.f[2] = 0.0;
-   sampObj->BorderColor.f[3] = 0.0;
-   sampObj->MinLod = -1000.0F;
-   sampObj->MaxLod = 1000.0F;
-   sampObj->LodBias = 0.0F;
-   sampObj->MaxAnisotropy = 1.0F;
-   sampObj->CompareMode = GL_NONE;
-   sampObj->CompareFunc = GL_LEQUAL;
-   sampObj->CompareFailValue = 0.0;
-   sampObj->sRGBDecode = GL_FALSE;
-   sampObj->DepthMode = 0;
-}
-
-
-/**
- * Fallback for ctx->Driver.NewSamplerObject();
- */
-struct gl_sampler_object *
-_mesa_new_sampler_object(struct gl_context *ctx, GLuint name)
-{
-   struct gl_sampler_object *sampObj = CALLOC_STRUCT(gl_sampler_object);
-   if (sampObj) {
-      _mesa_init_sampler_object(sampObj, name);
-   }
-   return sampObj;
-}
-
-
-/**
- * Fallback for ctx->Driver.DeleteSamplerObject();
- */
-void
-_mesa_delete_sampler_object(struct gl_context *ctx,
-                            struct gl_sampler_object *sampObj)
-{
-   FREE(sampObj);
-}
-
-
-static void GLAPIENTRY
-_mesa_GenSamplers(GLsizei count, GLuint *samplers)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   GLuint first;
-   GLint i;
-
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   if (MESA_VERBOSE & VERBOSE_API)
-      _mesa_debug(ctx, "glGenSamplers(%d)\n", count);
-
-   if (count < 0) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glGenSamplers");
-      return;
-   }
-
-   if (!samplers)
-      return;
-
-   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->SamplerObjects, count);
-
-   /* Insert the ID and pointer to new sampler object into hash table */
-   for (i = 0; i < count; i++) {
-      struct gl_sampler_object *sampObj =
-         ctx->Driver.NewSamplerObject(ctx, first + i);
-      _mesa_HashInsert(ctx->Shared->SamplerObjects, first + i, sampObj);
-      samplers[i] = first + i;
-   }
-}
-
-
-static void GLAPIENTRY
-_mesa_DeleteSamplers(GLsizei count, const GLuint *samplers)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   GLsizei i;
-
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-   FLUSH_VERTICES(ctx, 0);
-
-   if (count < 0) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteSamplers(count)");
-      return;
-   }
-
-   _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
-
-   for (i = 0; i < count; i++) {
-      if (samplers[i]) {
-         struct gl_sampler_object *sampObj =
-            _mesa_lookup_samplerobj(ctx, samplers[i]);
-         if (sampObj) {
-            /* The ID is immediately freed for re-use */
-            _mesa_HashRemove(ctx->Shared->SamplerObjects, samplers[i]);
-            /* But the object exists until its reference count goes to zero */
-            _mesa_reference_sampler_object(ctx, &sampObj, NULL);
-         }
-      }
-   }
-
-   _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
-}
-
-
-static GLboolean GLAPIENTRY
-_mesa_IsSampler(GLuint sampler)
-{
-   struct gl_sampler_object *sampObj;
-   GET_CURRENT_CONTEXT(ctx);
-
-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
-
-   if (sampler == 0)
-      return GL_FALSE;
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-
-   return sampObj != NULL;
-}
-
-
-static void GLAPIENTRY
-_mesa_BindSampler(GLuint unit, GLuint sampler)
-{
-   struct gl_sampler_object *sampObj;
-   GET_CURRENT_CONTEXT(ctx);
-
-   if (unit >= ctx->Const.MaxTextureImageUnits) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glBindSampler(unit %u)", unit);
-      return;
-   }
-
-   if (sampler == 0) {
-      /* Use the default sampler object, the one contained in the texture
-       * object.
-       */
-      sampObj = NULL;
-   }
-   else {
-      /* user-defined sampler object */
-      sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-      if (!sampObj) {
-         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindSampler(sampler)");
-         return;
-      }
-   }
-   
-   if (ctx->Texture.Unit[unit].Sampler != sampObj) {
-      FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-   }
-
-   /* bind new sampler */
-   _mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[unit].Sampler,
-                                  sampObj);
-}
-
-
-/**
- * Check if a coordinate wrap mode is supported for the texture target.
- * \return GL_TRUE if legal, GL_FALSE otherwise
- */
-static GLboolean 
-validate_texture_wrap_mode(struct gl_context *ctx, GLenum wrap)
-{
-   const struct gl_extensions * const e = &ctx->Extensions;
-
-   switch (wrap) {
-   case GL_CLAMP:
-   case GL_CLAMP_TO_EDGE:
-   case GL_REPEAT:
-      return GL_TRUE;
-   case GL_CLAMP_TO_BORDER:
-      return e->ARB_texture_border_clamp;
-   case GL_MIRRORED_REPEAT:
-      return e->ARB_texture_mirrored_repeat;
-   case GL_MIRROR_CLAMP_EXT:
-      return e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp;
-   case GL_MIRROR_CLAMP_TO_EDGE_EXT:
-      return e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp;
-   case GL_MIRROR_CLAMP_TO_BORDER_EXT:
-      return e->EXT_texture_mirror_clamp;
-   default:
-      return GL_FALSE;
-   }
-}
-
-
-/**
- * This is called just prior to changing any sampler object state.
- */
-static INLINE void
-flush(struct gl_context *ctx)
-{
-   FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-}
-
-
-#define INVALID_PARAM 0x100
-#define INVALID_PNAME 0x101
-#define INVALID_VALUE 0x102
-
-static GLuint
-set_sampler_wrap_s(struct gl_context *ctx, struct gl_sampler_object *samp,
-                   GLint param)
-{
-   if (samp->WrapS == param)
-      return GL_FALSE;
-   if (validate_texture_wrap_mode(ctx, param)) {
-      flush(ctx);
-      samp->WrapS = param;
-      return GL_TRUE;
-   }
-   return INVALID_PARAM;
-}
-
-
-static GLuint
-set_sampler_wrap_t(struct gl_context *ctx, struct gl_sampler_object *samp,
-                   GLint param)
-{
-   if (samp->WrapT == param)
-      return GL_FALSE;
-   if (validate_texture_wrap_mode(ctx, param)) {
-      flush(ctx);
-      samp->WrapT = param;
-      return GL_TRUE;
-   }
-   return INVALID_PARAM;
-}
-
-
-static GLuint
-set_sampler_wrap_r(struct gl_context *ctx, struct gl_sampler_object *samp,
-                   GLint param)
-{
-   if (samp->WrapR == param)
-      return GL_FALSE;
-   if (validate_texture_wrap_mode(ctx, param)) {
-      flush(ctx);
-      samp->WrapR = param;
-      return GL_TRUE;
-   }
-   return INVALID_PARAM;
-}
-
-
-static GLuint
-set_sampler_min_filter(struct gl_context *ctx, struct gl_sampler_object *samp,
-                       GLint param)
-{
-   if (samp->MinFilter == param)
-      return GL_FALSE;
-
-   switch (param) {
-   case GL_NEAREST:
-   case GL_LINEAR:
-   case GL_NEAREST_MIPMAP_NEAREST:
-   case GL_LINEAR_MIPMAP_NEAREST:
-   case GL_NEAREST_MIPMAP_LINEAR:
-   case GL_LINEAR_MIPMAP_LINEAR:
-      flush(ctx);
-      samp->MinFilter = param;
-      return GL_TRUE;
-   default:
-      return INVALID_PARAM;
-   }
-}
-
-
-static GLuint
-set_sampler_mag_filter(struct gl_context *ctx, struct gl_sampler_object *samp,
-                       GLint param)
-{
-   if (samp->MagFilter == param)
-      return GL_FALSE;
-
-   switch (param) {
-   case GL_NEAREST:
-   case GL_LINEAR:
-      flush(ctx);
-      samp->MagFilter = param;
-      return GL_TRUE;
-   default:
-      return INVALID_PARAM;
-   }
-}
-
-
-static GLuint
-set_sampler_lod_bias(struct gl_context *ctx, struct gl_sampler_object *samp,
-                     GLfloat param)
-{
-   if (samp->LodBias == param)
-      return GL_FALSE;
-
-   flush(ctx);
-   samp->LodBias = param;
-   return GL_TRUE;
-}
-
-
-static GLuint
-set_sampler_border_colorf(struct gl_context *ctx,
-                          struct gl_sampler_object *samp,
-                          const GLfloat params[4])
-{
-   flush(ctx);
-   samp->BorderColor.f[RCOMP] = params[0];
-   samp->BorderColor.f[GCOMP] = params[1];
-   samp->BorderColor.f[BCOMP] = params[2];
-   samp->BorderColor.f[ACOMP] = params[3];
-   return GL_TRUE;
-}
-
-
-static GLuint
-set_sampler_border_colori(struct gl_context *ctx,
-                          struct gl_sampler_object *samp,
-                          const GLint params[4])
-{
-   flush(ctx);
-   samp->BorderColor.i[RCOMP] = params[0];
-   samp->BorderColor.i[GCOMP] = params[1];
-   samp->BorderColor.i[BCOMP] = params[2];
-   samp->BorderColor.i[ACOMP] = params[3];
-   return GL_TRUE;
-}
-
-
-static GLuint
-set_sampler_border_colorui(struct gl_context *ctx,
-                           struct gl_sampler_object *samp,
-                           const GLuint params[4])
-{
-   flush(ctx);
-   samp->BorderColor.ui[RCOMP] = params[0];
-   samp->BorderColor.ui[GCOMP] = params[1];
-   samp->BorderColor.ui[BCOMP] = params[2];
-   samp->BorderColor.ui[ACOMP] = params[3];
-   return GL_TRUE;
-}
-
-
-static GLuint
-set_sampler_min_lod(struct gl_context *ctx, struct gl_sampler_object *samp,
-                    GLfloat param)
-{
-   if (samp->MinLod == param)
-      return GL_FALSE;
-
-   flush(ctx);
-   samp->MinLod = param;
-   return GL_TRUE;
-}
-
-
-static GLuint
-set_sampler_max_lod(struct gl_context *ctx, struct gl_sampler_object *samp,
-                    GLint param)
-{
-   if (samp->MaxLod == param)
-      return GL_FALSE;
-
-   flush(ctx);
-   samp->MaxLod = param;
-   return GL_TRUE;
-}
-
-
-static GLuint
-set_sampler_compare_mode(struct gl_context *ctx,
-                         struct gl_sampler_object *samp, GLint param)
-{
-   if (!ctx->Extensions.ARB_shadow)
-      return INVALID_PNAME;
-
-   if (samp->CompareMode == param)
-      return GL_FALSE;
-
-   if (param == GL_NONE ||
-       param == GL_COMPARE_R_TO_TEXTURE_ARB) {
-      flush(ctx);
-      samp->CompareMode = param;
-      return GL_TRUE;
-   }
-
-   return INVALID_PARAM;
-}
-
-
-static GLuint
-set_sampler_compare_func(struct gl_context *ctx,
-                         struct gl_sampler_object *samp, GLint param)
-{
-   if (!ctx->Extensions.ARB_shadow)
-      return INVALID_PNAME;
-
-   if (samp->CompareFunc == param)
-      return GL_FALSE;
-
-   switch (param) {
-   case GL_LEQUAL:
-   case GL_GEQUAL:
-      flush(ctx);
-      samp->CompareFunc = param;
-      return GL_TRUE;
-   case GL_EQUAL:
-   case GL_NOTEQUAL:
-   case GL_LESS:
-   case GL_GREATER:
-   case GL_ALWAYS:
-   case GL_NEVER:
-      if (ctx->Extensions.EXT_shadow_funcs) {
-         flush(ctx);
-         samp->CompareFunc = param;
-         return GL_TRUE;
-      }
-      /* fall-through */
-   default:
-      return INVALID_PARAM;
-   }
-}
-
-
-static GLuint
-set_sampler_max_anisotropy(struct gl_context *ctx,
-                           struct gl_sampler_object *samp, GLfloat param)
-{
-   if (!ctx->Extensions.EXT_texture_filter_anisotropic)
-      return INVALID_PNAME;
-
-   if (samp->MaxAnisotropy == param)
-      return GL_FALSE;
-
-   if (param < 1.0)
-      return INVALID_VALUE;
-
-   flush(ctx);
-   /* clamp to max, that's what NVIDIA does */
-   samp->MaxAnisotropy = MIN2(param, ctx->Const.MaxTextureMaxAnisotropy);
-   return GL_TRUE;
-}
-
-
-static void GLAPIENTRY
-_mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param)
-{
-   struct gl_sampler_object *sampObj;
-   GLuint res;
-   GET_CURRENT_CONTEXT(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteri(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      res = set_sampler_wrap_s(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_WRAP_T:
-      res = set_sampler_wrap_t(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_WRAP_R:
-      res = set_sampler_wrap_r(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      res = set_sampler_min_filter(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      res = set_sampler_mag_filter(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) param);
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) param);
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) param);
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      res = set_sampler_compare_mode(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      res = set_sampler_compare_func(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) param);
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      /* fall-through */
-   default:
-      res = INVALID_PNAME;
-   }
-
-   switch (res) {
-   case GL_FALSE:
-      /* no change */
-      break;
-   case GL_TRUE:
-      /* state change - we do nothing special at this time */
-      break;
-   case INVALID_PNAME:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteri(pname=%s)\n",
-                  _mesa_lookup_enum_by_nr(pname));
-      break;
-   case INVALID_PARAM:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteri(param=%d)\n",
-                  param);
-      break;
-   case INVALID_VALUE:
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteri(param=%d)\n",
-                  param);
-      break;
-   default:
-      ;
-   }
-}
-
-
-static void GLAPIENTRY
-_mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param)
-{
-   struct gl_sampler_object *sampObj;
-   GLuint res;
-   GET_CURRENT_CONTEXT(ctx);
-
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterf(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      res = set_sampler_wrap_s(ctx, sampObj, (GLint) param);
-      break;
-   case GL_TEXTURE_WRAP_T:
-      res = set_sampler_wrap_t(ctx, sampObj, (GLint) param);
-      break;
-   case GL_TEXTURE_WRAP_R:
-      res = set_sampler_wrap_r(ctx, sampObj, (GLint) param);
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      res = set_sampler_min_filter(ctx, sampObj, (GLint) param);
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      res = set_sampler_mag_filter(ctx, sampObj, (GLint) param);
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      res = set_sampler_min_lod(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      res = set_sampler_max_lod(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      res = set_sampler_lod_bias(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      res = set_sampler_compare_mode(ctx, sampObj, (GLint) param);
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      res = set_sampler_compare_func(ctx, sampObj, (GLint) param);
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      res = set_sampler_max_anisotropy(ctx, sampObj, param);
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      /* fall-through */
-   default:
-      res = INVALID_PNAME;
-   }
-
-   switch (res) {
-   case GL_FALSE:
-      /* no change */
-      break;
-   case GL_TRUE:
-      /* state change - we do nothing special at this time */
-      break;
-   case INVALID_PNAME:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterf(pname=%s)\n",
-                  _mesa_lookup_enum_by_nr(pname));
-      break;
-   case INVALID_PARAM:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterf(param=%f)\n",
-                  param);
-      break;
-   case INVALID_VALUE:
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterf(param=%f)\n",
-                  param);
-      break;
-   default:
-      ;
-   }
-}
-
-static void GLAPIENTRY
-_mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params)
-{
-   struct gl_sampler_object *sampObj;
-   GLuint res;
-   GET_CURRENT_CONTEXT(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteriv(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      res = set_sampler_wrap_s(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_WRAP_T:
-      res = set_sampler_wrap_t(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_WRAP_R:
-      res = set_sampler_wrap_r(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      res = set_sampler_min_filter(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      res = set_sampler_mag_filter(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      res = set_sampler_compare_mode(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      res = set_sampler_compare_func(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      {
-         GLfloat c[4];
-         c[0] = INT_TO_FLOAT(params[0]);
-         c[1] = INT_TO_FLOAT(params[1]);
-         c[2] = INT_TO_FLOAT(params[2]);
-         c[3] = INT_TO_FLOAT(params[3]);
-         res = set_sampler_border_colorf(ctx, sampObj, c);
-      }
-      break;
-   default:
-      res = INVALID_PNAME;
-   }
-
-   switch (res) {
-   case GL_FALSE:
-      /* no change */
-      break;
-   case GL_TRUE:
-      /* state change - we do nothing special at this time */
-      break;
-   case INVALID_PNAME:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteriv(pname=%s)\n",
-                  _mesa_lookup_enum_by_nr(pname));
-      break;
-   case INVALID_PARAM:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteriv(param=%d)\n",
-                  params[0]);
-      break;
-   case INVALID_VALUE:
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteriv(param=%d)\n",
-                  params[0]);
-      break;
-   default:
-      ;
-   }
-}
-
-static void GLAPIENTRY
-_mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params)
-{
-   struct gl_sampler_object *sampObj;
-   GLuint res;
-   GET_CURRENT_CONTEXT(ctx);
-
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterfv(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      res = set_sampler_wrap_s(ctx, sampObj, (GLint) params[0]);
-      break;
-   case GL_TEXTURE_WRAP_T:
-      res = set_sampler_wrap_t(ctx, sampObj, (GLint) params[0]);
-      break;
-   case GL_TEXTURE_WRAP_R:
-      res = set_sampler_wrap_r(ctx, sampObj, (GLint) params[0]);
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      res = set_sampler_min_filter(ctx, sampObj, (GLint) params[0]);
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      res = set_sampler_mag_filter(ctx, sampObj, (GLint) params[0]);
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      res = set_sampler_min_lod(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      res = set_sampler_max_lod(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      res = set_sampler_lod_bias(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      res = set_sampler_compare_mode(ctx, sampObj, (GLint) params[0]);
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      res = set_sampler_compare_func(ctx, sampObj, (GLint) params[0]);
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      res = set_sampler_max_anisotropy(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      res = set_sampler_border_colorf(ctx, sampObj, params);
-      break;
-   default:
-      res = INVALID_PNAME;
-   }
-
-   switch (res) {
-   case GL_FALSE:
-      /* no change */
-      break;
-   case GL_TRUE:
-      /* state change - we do nothing special at this time */
-      break;
-   case INVALID_PNAME:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterfv(pname=%s)\n",
-                  _mesa_lookup_enum_by_nr(pname));
-      break;
-   case INVALID_PARAM:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterfv(param=%f)\n",
-                  params[0]);
-      break;
-   case INVALID_VALUE:
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterfv(param=%f)\n",
-                  params[0]);
-      break;
-   default:
-      ;
-   }
-}
-
-static void GLAPIENTRY
-_mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params)
-{
-   struct gl_sampler_object *sampObj;
-   GLuint res;
-   GET_CURRENT_CONTEXT(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIiv(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      res = set_sampler_wrap_s(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_WRAP_T:
-      res = set_sampler_wrap_t(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_WRAP_R:
-      res = set_sampler_wrap_r(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      res = set_sampler_min_filter(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      res = set_sampler_mag_filter(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      res = set_sampler_compare_mode(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      res = set_sampler_compare_func(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      res = set_sampler_border_colori(ctx, sampObj, params);
-      break;
-   default:
-      res = INVALID_PNAME;
-   }
-
-   switch (res) {
-   case GL_FALSE:
-      /* no change */
-      break;
-   case GL_TRUE:
-      /* state change - we do nothing special at this time */
-      break;
-   case INVALID_PNAME:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIiv(pname=%s)\n",
-                  _mesa_lookup_enum_by_nr(pname));
-      break;
-   case INVALID_PARAM:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIiv(param=%d)\n",
-                  params[0]);
-      break;
-   case INVALID_VALUE:
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIiv(param=%d)\n",
-                  params[0]);
-      break;
-   default:
-      ;
-   }
-}
-
-
-static void GLAPIENTRY
-_mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params)
-{
-   struct gl_sampler_object *sampObj;
-   GLuint res;
-   GET_CURRENT_CONTEXT(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIuiv(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      res = set_sampler_wrap_s(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_WRAP_T:
-      res = set_sampler_wrap_t(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_WRAP_R:
-      res = set_sampler_wrap_r(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      res = set_sampler_min_filter(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      res = set_sampler_mag_filter(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      res = set_sampler_compare_mode(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      res = set_sampler_compare_func(ctx, sampObj, params[0]);
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      res = set_sampler_border_colorui(ctx, sampObj, params);
-      break;
-   default:
-      res = INVALID_PNAME;
-   }
-
-   switch (res) {
-   case GL_FALSE:
-      /* no change */
-      break;
-   case GL_TRUE:
-      /* state change - we do nothing special at this time */
-      break;
-   case INVALID_PNAME:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIuiv(pname=%s)\n",
-                  _mesa_lookup_enum_by_nr(pname));
-      break;
-   case INVALID_PARAM:
-      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIuiv(param=%u)\n",
-                  params[0]);
-      break;
-   case INVALID_VALUE:
-      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIuiv(param=%u)\n",
-                  params[0]);
-      break;
-   default:
-      ;
-   }
-}
-
-
-static void GLAPIENTRY
-_mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params)
-{
-   struct gl_sampler_object *sampObj;
-   GET_CURRENT_CONTEXT(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glGetSamplerParameteriv(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      *params = sampObj->WrapS;
-      break;
-   case GL_TEXTURE_WRAP_T:
-      *params = sampObj->WrapT;
-      break;
-   case GL_TEXTURE_WRAP_R:
-      *params = sampObj->WrapR;
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      *params = sampObj->MinFilter;
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      *params = sampObj->MagFilter;
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      *params = (GLint) sampObj->MinLod;
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      *params = (GLint) sampObj->MaxLod;
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      *params = (GLint) sampObj->LodBias;
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      if (!ctx->Extensions.ARB_shadow)
-         goto invalid_pname;
-      *params = sampObj->CompareMode;
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      if (!ctx->Extensions.ARB_shadow)
-         goto invalid_pname;
-      *params = sampObj->CompareFunc;
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      *params = (GLint) sampObj->MaxAnisotropy;
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      params[0] = FLOAT_TO_INT(sampObj->BorderColor.f[0]);
-      params[1] = FLOAT_TO_INT(sampObj->BorderColor.f[1]);
-      params[2] = FLOAT_TO_INT(sampObj->BorderColor.f[2]);
-      params[3] = FLOAT_TO_INT(sampObj->BorderColor.f[3]);
-      break;
-   default:
-      goto invalid_pname;
-   }
-   return;
-
-invalid_pname:
-   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameteriv(pname=%s)",
-               _mesa_lookup_enum_by_nr(pname));
-}
-
-
-static void GLAPIENTRY
-_mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params)
-{
-   struct gl_sampler_object *sampObj;
-   GET_CURRENT_CONTEXT(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE, "glGetSamplerParameterfv(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      *params = (GLfloat) sampObj->WrapS;
-      break;
-   case GL_TEXTURE_WRAP_T:
-      *params = (GLfloat) sampObj->WrapT;
-      break;
-   case GL_TEXTURE_WRAP_R:
-      *params = (GLfloat) sampObj->WrapR;
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      *params = (GLfloat) sampObj->MinFilter;
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      *params = (GLfloat) sampObj->MagFilter;
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      *params = sampObj->MinLod;
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      *params = sampObj->MaxLod;
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      *params = sampObj->LodBias;
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      if (!ctx->Extensions.ARB_shadow)
-         goto invalid_pname;
-      *params = (GLfloat) sampObj->CompareMode;
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      if (!ctx->Extensions.ARB_shadow)
-         goto invalid_pname;
-      *params = (GLfloat) sampObj->CompareFunc;
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      *params = sampObj->MaxAnisotropy;
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      params[0] = sampObj->BorderColor.f[0];
-      params[1] = sampObj->BorderColor.f[1];
-      params[2] = sampObj->BorderColor.f[2];
-      params[3] = sampObj->BorderColor.f[3];
-      break;
-   default:
-      goto invalid_pname;
-   }
-   return;
-
-invalid_pname:
-   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterfv(pname=%s)",
-               _mesa_lookup_enum_by_nr(pname));
-}
-
-
-static void GLAPIENTRY
-_mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params)
-{
-   struct gl_sampler_object *sampObj;
-   GET_CURRENT_CONTEXT(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE,
-                  "glGetSamplerParameterIiv(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      *params = sampObj->WrapS;
-      break;
-   case GL_TEXTURE_WRAP_T:
-      *params = sampObj->WrapT;
-      break;
-   case GL_TEXTURE_WRAP_R:
-      *params = sampObj->WrapR;
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      *params = sampObj->MinFilter;
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      *params = sampObj->MagFilter;
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      *params = (GLint) sampObj->MinLod;
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      *params = (GLint) sampObj->MaxLod;
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      *params = (GLint) sampObj->LodBias;
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      if (!ctx->Extensions.ARB_shadow)
-         goto invalid_pname;
-      *params = sampObj->CompareMode;
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      if (!ctx->Extensions.ARB_shadow)
-         goto invalid_pname;
-      *params = sampObj->CompareFunc;
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      *params = (GLint) sampObj->MaxAnisotropy;
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      params[0] = sampObj->BorderColor.i[0];
-      params[1] = sampObj->BorderColor.i[1];
-      params[2] = sampObj->BorderColor.i[2];
-      params[3] = sampObj->BorderColor.i[3];
-      break;
-   default:
-      goto invalid_pname;
-   }
-   return;
-
-invalid_pname:
-   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterIiv(pname=%s)",
-               _mesa_lookup_enum_by_nr(pname));
-}
-
-
-static void GLAPIENTRY
-_mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params)
-{
-   struct gl_sampler_object *sampObj;
-   GET_CURRENT_CONTEXT(ctx);
-
-   sampObj = _mesa_lookup_samplerobj(ctx, sampler);
-   if (!sampObj) {
-      _mesa_error(ctx, GL_INVALID_VALUE,
-                  "glGetSamplerParameterIuiv(sampler %u)",
-                  sampler);
-      return;
-   }
-
-   switch (pname) {
-   case GL_TEXTURE_WRAP_S:
-      *params = sampObj->WrapS;
-      break;
-   case GL_TEXTURE_WRAP_T:
-      *params = sampObj->WrapT;
-      break;
-   case GL_TEXTURE_WRAP_R:
-      *params = sampObj->WrapR;
-      break;
-   case GL_TEXTURE_MIN_FILTER:
-      *params = sampObj->MinFilter;
-      break;
-   case GL_TEXTURE_MAG_FILTER:
-      *params = sampObj->MagFilter;
-      break;
-   case GL_TEXTURE_MIN_LOD:
-      *params = (GLuint) sampObj->MinLod;
-      break;
-   case GL_TEXTURE_MAX_LOD:
-      *params = (GLuint) sampObj->MaxLod;
-      break;
-   case GL_TEXTURE_LOD_BIAS:
-      *params = (GLuint) sampObj->LodBias;
-      break;
-   case GL_TEXTURE_COMPARE_MODE:
-      if (!ctx->Extensions.ARB_shadow)
-         goto invalid_pname;
-      *params = sampObj->CompareMode;
-      break;
-   case GL_TEXTURE_COMPARE_FUNC:
-      if (!ctx->Extensions.ARB_shadow)
-         goto invalid_pname;
-      *params = sampObj->CompareFunc;
-      break;
-   case GL_TEXTURE_MAX_ANISOTROPY_EXT:
-      *params = (GLuint) sampObj->MaxAnisotropy;
-      break;
-   case GL_TEXTURE_BORDER_COLOR:
-      params[0] = sampObj->BorderColor.ui[0];
-      params[1] = sampObj->BorderColor.ui[1];
-      params[2] = sampObj->BorderColor.ui[2];
-      params[3] = sampObj->BorderColor.ui[3];
-      break;
-   default:
-      goto invalid_pname;
-   }
-   return;
-
-invalid_pname:
-   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterIuiv(pname=%s)",
-               _mesa_lookup_enum_by_nr(pname));
-}
-
-
-void
-_mesa_init_sampler_object_functions(struct dd_function_table *driver)
-{
-   driver->NewSamplerObject = _mesa_new_sampler_object;
-   driver->DeleteSamplerObject = _mesa_delete_sampler_object;
-}
-
-
-void
-_mesa_init_sampler_object_dispatch(struct _glapi_table *disp)
-{
-   SET_GenSamplers(disp, _mesa_GenSamplers);
-   SET_DeleteSamplers(disp, _mesa_DeleteSamplers);
-   SET_IsSampler(disp, _mesa_IsSampler);
-   SET_BindSampler(disp, _mesa_BindSampler);
-   SET_SamplerParameteri(disp, _mesa_SamplerParameteri);
-   SET_SamplerParameterf(disp, _mesa_SamplerParameterf);
-   SET_SamplerParameteriv(disp, _mesa_SamplerParameteriv);
-   SET_SamplerParameterfv(disp, _mesa_SamplerParameterfv);
-   SET_SamplerParameterIiv(disp, _mesa_SamplerParameterIiv);
-   SET_SamplerParameterIuiv(disp, _mesa_SamplerParameterIuiv);
-   SET_GetSamplerParameteriv(disp, _mesa_GetSamplerParameteriv);
-   SET_GetSamplerParameterfv(disp, _mesa_GetSamplerParameterfv);
-   SET_GetSamplerParameterIiv(disp, _mesa_GetSamplerParameterIiv);
-   SET_GetSamplerParameterIuiv(disp, _mesa_GetSamplerParameterIuiv);
-}
+/*

+ * Mesa 3-D graphics library

+ *

+ * Copyright (C) 2011  VMware, Inc.  All Rights Reserved.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice shall be included

+ * in all copies or substantial portions of the Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

+ */

+

+

+/**

+ * \file samplerobj.c

+ * \brief Functions for the GL_ARB_sampler_objects extension.

+ * \author Brian Paul

+ */

+

+

+#include "main/glheader.h"

+#include "main/context.h"

+#include "main/dispatch.h"

+#include "main/enums.h"

+#include "main/hash.h"

+#include "main/macros.h"

+#include "main/mfeatures.h"

+#include "main/mtypes.h"

+#include "main/samplerobj.h"

+

+

+static struct gl_sampler_object *

+_mesa_lookup_samplerobj(struct gl_context *ctx, GLuint name)

+{

+   if (name == 0)

+      return NULL;

+   else

+      return (struct gl_sampler_object *)

+         _mesa_HashLookup(ctx->Shared->SamplerObjects, name);

+}

+

+

+/**

+ * Handle reference counting.

+ */

+void

+_mesa_reference_sampler_object(struct gl_context *ctx,

+                               struct gl_sampler_object **ptr,

+                               struct gl_sampler_object *samp)

+{

+   if (*ptr == samp)

+      return;

+

+   if (*ptr) {

+      /* Unreference the old sampler */

+      GLboolean deleteFlag = GL_FALSE;

+      struct gl_sampler_object *oldSamp = *ptr;

+

+      /*_glthread_LOCK_MUTEX(oldSamp->Mutex);*/

+      ASSERT(oldSamp->RefCount > 0);

+      oldSamp->RefCount--;

+#if 0

+      printf("SamplerObj %p %d DECR to %d\n",

+             (void *) oldSamp, oldSamp->Name, oldSamp->RefCount);

+#endif

+      deleteFlag = (oldSamp->RefCount == 0);

+      /*_glthread_UNLOCK_MUTEX(oldSamp->Mutex);*/

+

+      if (deleteFlag) {

+	 ASSERT(ctx->Driver.DeleteSamplerObject);

+         ctx->Driver.DeleteSamplerObject(ctx, oldSamp);

+      }

+

+      *ptr = NULL;

+   }

+   ASSERT(!*ptr);

+

+   if (samp) {

+      /* reference new sampler */

+      /*_glthread_LOCK_MUTEX(samp->Mutex);*/

+      if (samp->RefCount == 0) {

+         /* this sampler's being deleted (look just above) */

+         /* Not sure this can every really happen.  Warn if it does. */

+         _mesa_problem(NULL, "referencing deleted sampler object");

+         *ptr = NULL;

+      }

+      else {

+         samp->RefCount++;

+#if 0

+         printf("SamplerObj %p %d INCR to %d\n",

+                (void *) samp, samp->Name, samp->RefCount);

+#endif

+         *ptr = samp;

+      }

+      /*_glthread_UNLOCK_MUTEX(samp->Mutex);*/

+   }

+}

+

+

+/**

+ * Initialize the fields of the given sampler object.

+ */

+void

+_mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name)

+{

+   sampObj->Name = name;

+   sampObj->RefCount = 1;

+   sampObj->WrapS = GL_REPEAT;

+   sampObj->WrapT = GL_REPEAT;

+   sampObj->WrapR = GL_REPEAT;

+   sampObj->MinFilter = GL_NEAREST_MIPMAP_LINEAR;

+   sampObj->MagFilter = GL_LINEAR;

+   sampObj->BorderColor.f[0] = 0.0;

+   sampObj->BorderColor.f[1] = 0.0;

+   sampObj->BorderColor.f[2] = 0.0;

+   sampObj->BorderColor.f[3] = 0.0;

+   sampObj->MinLod = -1000.0F;

+   sampObj->MaxLod = 1000.0F;

+   sampObj->LodBias = 0.0F;

+   sampObj->MaxAnisotropy = 1.0F;

+   sampObj->CompareMode = GL_NONE;

+   sampObj->CompareFunc = GL_LEQUAL;

+   sampObj->CompareFailValue = 0.0;

+   sampObj->sRGBDecode = GL_FALSE;

+   sampObj->DepthMode = 0;

+}

+

+

+/**

+ * Fallback for ctx->Driver.NewSamplerObject();

+ */

+struct gl_sampler_object *

+_mesa_new_sampler_object(struct gl_context *ctx, GLuint name)

+{

+   struct gl_sampler_object *sampObj = CALLOC_STRUCT(gl_sampler_object);

+   if (sampObj) {

+      _mesa_init_sampler_object(sampObj, name);

+   }

+   return sampObj;

+}

+

+

+/**

+ * Fallback for ctx->Driver.DeleteSamplerObject();

+ */

+void

+_mesa_delete_sampler_object(struct gl_context *ctx,

+                            struct gl_sampler_object *sampObj)

+{

+   FREE(sampObj);

+}

+

+

+static void GLAPIENTRY

+_mesa_GenSamplers(GLsizei count, GLuint *samplers)

+{

+   GET_CURRENT_CONTEXT(ctx);

+   GLuint first;

+   GLint i;

+

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   if (MESA_VERBOSE & VERBOSE_API)

+      _mesa_debug(ctx, "glGenSamplers(%d)\n", count);

+

+   if (count < 0) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenSamplers");

+      return;

+   }

+

+   if (!samplers)

+      return;

+

+   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->SamplerObjects, count);

+

+   /* Insert the ID and pointer to new sampler object into hash table */

+   for (i = 0; i < count; i++) {

+      struct gl_sampler_object *sampObj =

+         ctx->Driver.NewSamplerObject(ctx, first + i);

+      _mesa_HashInsert(ctx->Shared->SamplerObjects, first + i, sampObj);

+      samplers[i] = first + i;

+   }

+}

+

+

+static void GLAPIENTRY

+_mesa_DeleteSamplers(GLsizei count, const GLuint *samplers)

+{

+   GET_CURRENT_CONTEXT(ctx);

+   GLsizei i;

+

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+   FLUSH_VERTICES(ctx, 0);

+

+   if (count < 0) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteSamplers(count)");

+      return;

+   }

+

+   _glthread_LOCK_MUTEX(ctx->Shared->Mutex);

+

+   for (i = 0; i < count; i++) {

+      if (samplers[i]) {

+         struct gl_sampler_object *sampObj =

+            _mesa_lookup_samplerobj(ctx, samplers[i]);

+         if (sampObj) {

+            /* The ID is immediately freed for re-use */

+            _mesa_HashRemove(ctx->Shared->SamplerObjects, samplers[i]);

+            /* But the object exists until its reference count goes to zero */

+            _mesa_reference_sampler_object(ctx, &sampObj, NULL);

+         }

+      }

+   }

+

+   _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);

+}

+

+

+static GLboolean GLAPIENTRY

+_mesa_IsSampler(GLuint sampler)

+{

+   struct gl_sampler_object *sampObj;

+   GET_CURRENT_CONTEXT(ctx);

+

+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);

+

+   if (sampler == 0)

+      return GL_FALSE;

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+

+   return sampObj != NULL;

+}

+

+

+static void GLAPIENTRY

+_mesa_BindSampler(GLuint unit, GLuint sampler)

+{

+   struct gl_sampler_object *sampObj;

+   GET_CURRENT_CONTEXT(ctx);

+

+   if (unit >= ctx->Const.MaxTextureImageUnits) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glBindSampler(unit %u)", unit);

+      return;

+   }

+

+   if (sampler == 0) {

+      /* Use the default sampler object, the one contained in the texture

+       * object.

+       */

+      sampObj = NULL;

+   }

+   else {

+      /* user-defined sampler object */

+      sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+      if (!sampObj) {

+         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindSampler(sampler)");

+         return;

+      }

+   }

+   

+   if (ctx->Texture.Unit[unit].Sampler != sampObj) {

+      FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+   }

+

+   /* bind new sampler */

+   _mesa_reference_sampler_object(ctx, &ctx->Texture.Unit[unit].Sampler,

+                                  sampObj);

+}

+

+

+/**

+ * Check if a coordinate wrap mode is legal.

+ * \return GL_TRUE if legal, GL_FALSE otherwise

+ */

+static GLboolean 

+validate_texture_wrap_mode(struct gl_context *ctx, GLenum wrap)

+{

+   const struct gl_extensions * const e = &ctx->Extensions;

+

+   switch (wrap) {

+   case GL_CLAMP:

+   case GL_CLAMP_TO_EDGE:

+   case GL_REPEAT:

+      return GL_TRUE;

+   case GL_CLAMP_TO_BORDER:

+      return e->ARB_texture_border_clamp;

+   case GL_MIRRORED_REPEAT:

+      return e->ARB_texture_mirrored_repeat;

+   case GL_MIRROR_CLAMP_EXT:

+      return e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp;

+   case GL_MIRROR_CLAMP_TO_EDGE_EXT:

+      return e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp;

+   case GL_MIRROR_CLAMP_TO_BORDER_EXT:

+      return e->EXT_texture_mirror_clamp;

+   default:

+      return GL_FALSE;

+   }

+}

+

+

+/**

+ * This is called just prior to changing any sampler object state.

+ */

+static INLINE void

+flush(struct gl_context *ctx)

+{

+   FLUSH_VERTICES(ctx, _NEW_TEXTURE);

+}

+

+

+#define INVALID_PARAM 0x100

+#define INVALID_PNAME 0x101

+#define INVALID_VALUE 0x102

+

+static GLuint

+set_sampler_wrap_s(struct gl_context *ctx, struct gl_sampler_object *samp,

+                   GLint param)

+{

+   if (samp->WrapS == param)

+      return GL_FALSE;

+   if (validate_texture_wrap_mode(ctx, param)) {

+      flush(ctx);

+      samp->WrapS = param;

+      return GL_TRUE;

+   }

+   return INVALID_PARAM;

+}

+

+

+static GLuint

+set_sampler_wrap_t(struct gl_context *ctx, struct gl_sampler_object *samp,

+                   GLint param)

+{

+   if (samp->WrapT == param)

+      return GL_FALSE;

+   if (validate_texture_wrap_mode(ctx, param)) {

+      flush(ctx);

+      samp->WrapT = param;

+      return GL_TRUE;

+   }

+   return INVALID_PARAM;

+}

+

+

+static GLuint

+set_sampler_wrap_r(struct gl_context *ctx, struct gl_sampler_object *samp,

+                   GLint param)

+{

+   if (samp->WrapR == param)

+      return GL_FALSE;

+   if (validate_texture_wrap_mode(ctx, param)) {

+      flush(ctx);

+      samp->WrapR = param;

+      return GL_TRUE;

+   }

+   return INVALID_PARAM;

+}

+

+

+static GLuint

+set_sampler_min_filter(struct gl_context *ctx, struct gl_sampler_object *samp,

+                       GLint param)

+{

+   if (samp->MinFilter == param)

+      return GL_FALSE;

+

+   switch (param) {

+   case GL_NEAREST:

+   case GL_LINEAR:

+   case GL_NEAREST_MIPMAP_NEAREST:

+   case GL_LINEAR_MIPMAP_NEAREST:

+   case GL_NEAREST_MIPMAP_LINEAR:

+   case GL_LINEAR_MIPMAP_LINEAR:

+      flush(ctx);

+      samp->MinFilter = param;

+      return GL_TRUE;

+   default:

+      return INVALID_PARAM;

+   }

+}

+

+

+static GLuint

+set_sampler_mag_filter(struct gl_context *ctx, struct gl_sampler_object *samp,

+                       GLint param)

+{

+   if (samp->MagFilter == param)

+      return GL_FALSE;

+

+   switch (param) {

+   case GL_NEAREST:

+   case GL_LINEAR:

+      flush(ctx);

+      samp->MagFilter = param;

+      return GL_TRUE;

+   default:

+      return INVALID_PARAM;

+   }

+}

+

+

+static GLuint

+set_sampler_lod_bias(struct gl_context *ctx, struct gl_sampler_object *samp,

+                     GLfloat param)

+{

+   if (samp->LodBias == param)

+      return GL_FALSE;

+

+   flush(ctx);

+   samp->LodBias = param;

+   return GL_TRUE;

+}

+

+

+static GLuint

+set_sampler_border_colorf(struct gl_context *ctx,

+                          struct gl_sampler_object *samp,

+                          const GLfloat params[4])

+{

+   flush(ctx);

+   samp->BorderColor.f[RCOMP] = params[0];

+   samp->BorderColor.f[GCOMP] = params[1];

+   samp->BorderColor.f[BCOMP] = params[2];

+   samp->BorderColor.f[ACOMP] = params[3];

+   return GL_TRUE;

+}

+

+

+static GLuint

+set_sampler_border_colori(struct gl_context *ctx,

+                          struct gl_sampler_object *samp,

+                          const GLint params[4])

+{

+   flush(ctx);

+   samp->BorderColor.i[RCOMP] = params[0];

+   samp->BorderColor.i[GCOMP] = params[1];

+   samp->BorderColor.i[BCOMP] = params[2];

+   samp->BorderColor.i[ACOMP] = params[3];

+   return GL_TRUE;

+}

+

+

+static GLuint

+set_sampler_border_colorui(struct gl_context *ctx,

+                           struct gl_sampler_object *samp,

+                           const GLuint params[4])

+{

+   flush(ctx);

+   samp->BorderColor.ui[RCOMP] = params[0];

+   samp->BorderColor.ui[GCOMP] = params[1];

+   samp->BorderColor.ui[BCOMP] = params[2];

+   samp->BorderColor.ui[ACOMP] = params[3];

+   return GL_TRUE;

+}

+

+

+static GLuint

+set_sampler_min_lod(struct gl_context *ctx, struct gl_sampler_object *samp,

+                    GLfloat param)

+{

+   if (samp->MinLod == param)

+      return GL_FALSE;

+

+   flush(ctx);

+   samp->MinLod = param;

+   return GL_TRUE;

+}

+

+

+static GLuint

+set_sampler_max_lod(struct gl_context *ctx, struct gl_sampler_object *samp,

+                    GLint param)

+{

+   if (samp->MaxLod == param)

+      return GL_FALSE;

+

+   flush(ctx);

+   samp->MaxLod = param;

+   return GL_TRUE;

+}

+

+

+static GLuint

+set_sampler_compare_mode(struct gl_context *ctx,

+                         struct gl_sampler_object *samp, GLint param)

+{

+   if (!ctx->Extensions.ARB_shadow)

+      return INVALID_PNAME;

+

+   if (samp->CompareMode == param)

+      return GL_FALSE;

+

+   if (param == GL_NONE ||

+       param == GL_COMPARE_R_TO_TEXTURE_ARB) {

+      flush(ctx);

+      samp->CompareMode = param;

+      return GL_TRUE;

+   }

+

+   return INVALID_PARAM;

+}

+

+

+static GLuint

+set_sampler_compare_func(struct gl_context *ctx,

+                         struct gl_sampler_object *samp, GLint param)

+{

+   if (!ctx->Extensions.ARB_shadow)

+      return INVALID_PNAME;

+

+   if (samp->CompareFunc == param)

+      return GL_FALSE;

+

+   switch (param) {

+   case GL_LEQUAL:

+   case GL_GEQUAL:

+      flush(ctx);

+      samp->CompareFunc = param;

+      return GL_TRUE;

+   case GL_EQUAL:

+   case GL_NOTEQUAL:

+   case GL_LESS:

+   case GL_GREATER:

+   case GL_ALWAYS:

+   case GL_NEVER:

+      if (ctx->Extensions.EXT_shadow_funcs) {

+         flush(ctx);

+         samp->CompareFunc = param;

+         return GL_TRUE;

+      }

+      /* fall-through */

+   default:

+      return INVALID_PARAM;

+   }

+}

+

+

+static GLuint

+set_sampler_max_anisotropy(struct gl_context *ctx,

+                           struct gl_sampler_object *samp, GLfloat param)

+{

+   if (!ctx->Extensions.EXT_texture_filter_anisotropic)

+      return INVALID_PNAME;

+

+   if (samp->MaxAnisotropy == param)

+      return GL_FALSE;

+

+   if (param < 1.0)

+      return INVALID_VALUE;

+

+   flush(ctx);

+   /* clamp to max, that's what NVIDIA does */

+   samp->MaxAnisotropy = MIN2(param, ctx->Const.MaxTextureMaxAnisotropy);

+   return GL_TRUE;

+}

+

+

+static void GLAPIENTRY

+_mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param)

+{

+   struct gl_sampler_object *sampObj;

+   GLuint res;

+   GET_CURRENT_CONTEXT(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteri(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      res = set_sampler_wrap_s(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_WRAP_T:

+      res = set_sampler_wrap_t(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_WRAP_R:

+      res = set_sampler_wrap_r(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      res = set_sampler_min_filter(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      res = set_sampler_mag_filter(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) param);

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) param);

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) param);

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      res = set_sampler_compare_mode(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      res = set_sampler_compare_func(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) param);

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      /* fall-through */

+   default:

+      res = INVALID_PNAME;

+   }

+

+   switch (res) {

+   case GL_FALSE:

+      /* no change */

+      break;

+   case GL_TRUE:

+      /* state change - we do nothing special at this time */

+      break;

+   case INVALID_PNAME:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteri(pname=%s)\n",

+                  _mesa_lookup_enum_by_nr(pname));

+      break;

+   case INVALID_PARAM:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteri(param=%d)\n",

+                  param);

+      break;

+   case INVALID_VALUE:

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteri(param=%d)\n",

+                  param);

+      break;

+   default:

+      ;

+   }

+}

+

+

+static void GLAPIENTRY

+_mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param)

+{

+   struct gl_sampler_object *sampObj;

+   GLuint res;

+   GET_CURRENT_CONTEXT(ctx);

+

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterf(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      res = set_sampler_wrap_s(ctx, sampObj, (GLint) param);

+      break;

+   case GL_TEXTURE_WRAP_T:

+      res = set_sampler_wrap_t(ctx, sampObj, (GLint) param);

+      break;

+   case GL_TEXTURE_WRAP_R:

+      res = set_sampler_wrap_r(ctx, sampObj, (GLint) param);

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      res = set_sampler_min_filter(ctx, sampObj, (GLint) param);

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      res = set_sampler_mag_filter(ctx, sampObj, (GLint) param);

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      res = set_sampler_min_lod(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      res = set_sampler_max_lod(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      res = set_sampler_lod_bias(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      res = set_sampler_compare_mode(ctx, sampObj, (GLint) param);

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      res = set_sampler_compare_func(ctx, sampObj, (GLint) param);

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      res = set_sampler_max_anisotropy(ctx, sampObj, param);

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      /* fall-through */

+   default:

+      res = INVALID_PNAME;

+   }

+

+   switch (res) {

+   case GL_FALSE:

+      /* no change */

+      break;

+   case GL_TRUE:

+      /* state change - we do nothing special at this time */

+      break;

+   case INVALID_PNAME:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterf(pname=%s)\n",

+                  _mesa_lookup_enum_by_nr(pname));

+      break;

+   case INVALID_PARAM:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterf(param=%f)\n",

+                  param);

+      break;

+   case INVALID_VALUE:

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterf(param=%f)\n",

+                  param);

+      break;

+   default:

+      ;

+   }

+}

+

+static void GLAPIENTRY

+_mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params)

+{

+   struct gl_sampler_object *sampObj;

+   GLuint res;

+   GET_CURRENT_CONTEXT(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteriv(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      res = set_sampler_wrap_s(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_WRAP_T:

+      res = set_sampler_wrap_t(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_WRAP_R:

+      res = set_sampler_wrap_r(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      res = set_sampler_min_filter(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      res = set_sampler_mag_filter(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      res = set_sampler_compare_mode(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      res = set_sampler_compare_func(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      {

+         GLfloat c[4];

+         c[0] = INT_TO_FLOAT(params[0]);

+         c[1] = INT_TO_FLOAT(params[1]);

+         c[2] = INT_TO_FLOAT(params[2]);

+         c[3] = INT_TO_FLOAT(params[3]);

+         res = set_sampler_border_colorf(ctx, sampObj, c);

+      }

+      break;

+   default:

+      res = INVALID_PNAME;

+   }

+

+   switch (res) {

+   case GL_FALSE:

+      /* no change */

+      break;

+   case GL_TRUE:

+      /* state change - we do nothing special at this time */

+      break;

+   case INVALID_PNAME:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteriv(pname=%s)\n",

+                  _mesa_lookup_enum_by_nr(pname));

+      break;

+   case INVALID_PARAM:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameteriv(param=%d)\n",

+                  params[0]);

+      break;

+   case INVALID_VALUE:

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameteriv(param=%d)\n",

+                  params[0]);

+      break;

+   default:

+      ;

+   }

+}

+

+static void GLAPIENTRY

+_mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params)

+{

+   struct gl_sampler_object *sampObj;

+   GLuint res;

+   GET_CURRENT_CONTEXT(ctx);

+

+   ASSERT_OUTSIDE_BEGIN_END(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterfv(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      res = set_sampler_wrap_s(ctx, sampObj, (GLint) params[0]);

+      break;

+   case GL_TEXTURE_WRAP_T:

+      res = set_sampler_wrap_t(ctx, sampObj, (GLint) params[0]);

+      break;

+   case GL_TEXTURE_WRAP_R:

+      res = set_sampler_wrap_r(ctx, sampObj, (GLint) params[0]);

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      res = set_sampler_min_filter(ctx, sampObj, (GLint) params[0]);

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      res = set_sampler_mag_filter(ctx, sampObj, (GLint) params[0]);

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      res = set_sampler_min_lod(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      res = set_sampler_max_lod(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      res = set_sampler_lod_bias(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      res = set_sampler_compare_mode(ctx, sampObj, (GLint) params[0]);

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      res = set_sampler_compare_func(ctx, sampObj, (GLint) params[0]);

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      res = set_sampler_max_anisotropy(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      res = set_sampler_border_colorf(ctx, sampObj, params);

+      break;

+   default:

+      res = INVALID_PNAME;

+   }

+

+   switch (res) {

+   case GL_FALSE:

+      /* no change */

+      break;

+   case GL_TRUE:

+      /* state change - we do nothing special at this time */

+      break;

+   case INVALID_PNAME:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterfv(pname=%s)\n",

+                  _mesa_lookup_enum_by_nr(pname));

+      break;

+   case INVALID_PARAM:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterfv(param=%f)\n",

+                  params[0]);

+      break;

+   case INVALID_VALUE:

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterfv(param=%f)\n",

+                  params[0]);

+      break;

+   default:

+      ;

+   }

+}

+

+static void GLAPIENTRY

+_mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params)

+{

+   struct gl_sampler_object *sampObj;

+   GLuint res;

+   GET_CURRENT_CONTEXT(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIiv(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      res = set_sampler_wrap_s(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_WRAP_T:

+      res = set_sampler_wrap_t(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_WRAP_R:

+      res = set_sampler_wrap_r(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      res = set_sampler_min_filter(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      res = set_sampler_mag_filter(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      res = set_sampler_compare_mode(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      res = set_sampler_compare_func(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      res = set_sampler_border_colori(ctx, sampObj, params);

+      break;

+   default:

+      res = INVALID_PNAME;

+   }

+

+   switch (res) {

+   case GL_FALSE:

+      /* no change */

+      break;

+   case GL_TRUE:

+      /* state change - we do nothing special at this time */

+      break;

+   case INVALID_PNAME:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIiv(pname=%s)\n",

+                  _mesa_lookup_enum_by_nr(pname));

+      break;

+   case INVALID_PARAM:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIiv(param=%d)\n",

+                  params[0]);

+      break;

+   case INVALID_VALUE:

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIiv(param=%d)\n",

+                  params[0]);

+      break;

+   default:

+      ;

+   }

+}

+

+

+static void GLAPIENTRY

+_mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params)

+{

+   struct gl_sampler_object *sampObj;

+   GLuint res;

+   GET_CURRENT_CONTEXT(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIuiv(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      res = set_sampler_wrap_s(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_WRAP_T:

+      res = set_sampler_wrap_t(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_WRAP_R:

+      res = set_sampler_wrap_r(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      res = set_sampler_min_filter(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      res = set_sampler_mag_filter(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      res = set_sampler_min_lod(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      res = set_sampler_max_lod(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      res = set_sampler_lod_bias(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      res = set_sampler_compare_mode(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      res = set_sampler_compare_func(ctx, sampObj, params[0]);

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      res = set_sampler_max_anisotropy(ctx, sampObj, (GLfloat) params[0]);

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      res = set_sampler_border_colorui(ctx, sampObj, params);

+      break;

+   default:

+      res = INVALID_PNAME;

+   }

+

+   switch (res) {

+   case GL_FALSE:

+      /* no change */

+      break;

+   case GL_TRUE:

+      /* state change - we do nothing special at this time */

+      break;

+   case INVALID_PNAME:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIuiv(pname=%s)\n",

+                  _mesa_lookup_enum_by_nr(pname));

+      break;

+   case INVALID_PARAM:

+      _mesa_error(ctx, GL_INVALID_ENUM, "glSamplerParameterIuiv(param=%u)\n",

+                  params[0]);

+      break;

+   case INVALID_VALUE:

+      _mesa_error(ctx, GL_INVALID_VALUE, "glSamplerParameterIuiv(param=%u)\n",

+                  params[0]);

+      break;

+   default:

+      ;

+   }

+}

+

+

+static void GLAPIENTRY

+_mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params)

+{

+   struct gl_sampler_object *sampObj;

+   GET_CURRENT_CONTEXT(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glGetSamplerParameteriv(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      *params = sampObj->WrapS;

+      break;

+   case GL_TEXTURE_WRAP_T:

+      *params = sampObj->WrapT;

+      break;

+   case GL_TEXTURE_WRAP_R:

+      *params = sampObj->WrapR;

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      *params = sampObj->MinFilter;

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      *params = sampObj->MagFilter;

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      *params = (GLint) sampObj->MinLod;

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      *params = (GLint) sampObj->MaxLod;

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      *params = (GLint) sampObj->LodBias;

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      if (!ctx->Extensions.ARB_shadow)

+         goto invalid_pname;

+      *params = sampObj->CompareMode;

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      if (!ctx->Extensions.ARB_shadow)

+         goto invalid_pname;

+      *params = sampObj->CompareFunc;

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      *params = (GLint) sampObj->MaxAnisotropy;

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      params[0] = FLOAT_TO_INT(sampObj->BorderColor.f[0]);

+      params[1] = FLOAT_TO_INT(sampObj->BorderColor.f[1]);

+      params[2] = FLOAT_TO_INT(sampObj->BorderColor.f[2]);

+      params[3] = FLOAT_TO_INT(sampObj->BorderColor.f[3]);

+      break;

+   default:

+      goto invalid_pname;

+   }

+   return;

+

+invalid_pname:

+   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameteriv(pname=%s)",

+               _mesa_lookup_enum_by_nr(pname));

+}

+

+

+static void GLAPIENTRY

+_mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params)

+{

+   struct gl_sampler_object *sampObj;

+   GET_CURRENT_CONTEXT(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE, "glGetSamplerParameterfv(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      *params = (GLfloat) sampObj->WrapS;

+      break;

+   case GL_TEXTURE_WRAP_T:

+      *params = (GLfloat) sampObj->WrapT;

+      break;

+   case GL_TEXTURE_WRAP_R:

+      *params = (GLfloat) sampObj->WrapR;

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      *params = (GLfloat) sampObj->MinFilter;

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      *params = (GLfloat) sampObj->MagFilter;

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      *params = sampObj->MinLod;

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      *params = sampObj->MaxLod;

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      *params = sampObj->LodBias;

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      if (!ctx->Extensions.ARB_shadow)

+         goto invalid_pname;

+      *params = (GLfloat) sampObj->CompareMode;

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      if (!ctx->Extensions.ARB_shadow)

+         goto invalid_pname;

+      *params = (GLfloat) sampObj->CompareFunc;

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      *params = sampObj->MaxAnisotropy;

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      params[0] = sampObj->BorderColor.f[0];

+      params[1] = sampObj->BorderColor.f[1];

+      params[2] = sampObj->BorderColor.f[2];

+      params[3] = sampObj->BorderColor.f[3];

+      break;

+   default:

+      goto invalid_pname;

+   }

+   return;

+

+invalid_pname:

+   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterfv(pname=%s)",

+               _mesa_lookup_enum_by_nr(pname));

+}

+

+

+static void GLAPIENTRY

+_mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params)

+{

+   struct gl_sampler_object *sampObj;

+   GET_CURRENT_CONTEXT(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE,

+                  "glGetSamplerParameterIiv(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      *params = sampObj->WrapS;

+      break;

+   case GL_TEXTURE_WRAP_T:

+      *params = sampObj->WrapT;

+      break;

+   case GL_TEXTURE_WRAP_R:

+      *params = sampObj->WrapR;

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      *params = sampObj->MinFilter;

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      *params = sampObj->MagFilter;

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      *params = (GLint) sampObj->MinLod;

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      *params = (GLint) sampObj->MaxLod;

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      *params = (GLint) sampObj->LodBias;

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      if (!ctx->Extensions.ARB_shadow)

+         goto invalid_pname;

+      *params = sampObj->CompareMode;

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      if (!ctx->Extensions.ARB_shadow)

+         goto invalid_pname;

+      *params = sampObj->CompareFunc;

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      *params = (GLint) sampObj->MaxAnisotropy;

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      params[0] = sampObj->BorderColor.i[0];

+      params[1] = sampObj->BorderColor.i[1];

+      params[2] = sampObj->BorderColor.i[2];

+      params[3] = sampObj->BorderColor.i[3];

+      break;

+   default:

+      goto invalid_pname;

+   }

+   return;

+

+invalid_pname:

+   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterIiv(pname=%s)",

+               _mesa_lookup_enum_by_nr(pname));

+}

+

+

+static void GLAPIENTRY

+_mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params)

+{

+   struct gl_sampler_object *sampObj;

+   GET_CURRENT_CONTEXT(ctx);

+

+   sampObj = _mesa_lookup_samplerobj(ctx, sampler);

+   if (!sampObj) {

+      _mesa_error(ctx, GL_INVALID_VALUE,

+                  "glGetSamplerParameterIuiv(sampler %u)",

+                  sampler);

+      return;

+   }

+

+   switch (pname) {

+   case GL_TEXTURE_WRAP_S:

+      *params = sampObj->WrapS;

+      break;

+   case GL_TEXTURE_WRAP_T:

+      *params = sampObj->WrapT;

+      break;

+   case GL_TEXTURE_WRAP_R:

+      *params = sampObj->WrapR;

+      break;

+   case GL_TEXTURE_MIN_FILTER:

+      *params = sampObj->MinFilter;

+      break;

+   case GL_TEXTURE_MAG_FILTER:

+      *params = sampObj->MagFilter;

+      break;

+   case GL_TEXTURE_MIN_LOD:

+      *params = (GLuint) sampObj->MinLod;

+      break;

+   case GL_TEXTURE_MAX_LOD:

+      *params = (GLuint) sampObj->MaxLod;

+      break;

+   case GL_TEXTURE_LOD_BIAS:

+      *params = (GLuint) sampObj->LodBias;

+      break;

+   case GL_TEXTURE_COMPARE_MODE:

+      if (!ctx->Extensions.ARB_shadow)

+         goto invalid_pname;

+      *params = sampObj->CompareMode;

+      break;

+   case GL_TEXTURE_COMPARE_FUNC:

+      if (!ctx->Extensions.ARB_shadow)

+         goto invalid_pname;

+      *params = sampObj->CompareFunc;

+      break;

+   case GL_TEXTURE_MAX_ANISOTROPY_EXT:

+      *params = (GLuint) sampObj->MaxAnisotropy;

+      break;

+   case GL_TEXTURE_BORDER_COLOR:

+      params[0] = sampObj->BorderColor.ui[0];

+      params[1] = sampObj->BorderColor.ui[1];

+      params[2] = sampObj->BorderColor.ui[2];

+      params[3] = sampObj->BorderColor.ui[3];

+      break;

+   default:

+      goto invalid_pname;

+   }

+   return;

+

+invalid_pname:

+   _mesa_error(ctx, GL_INVALID_ENUM, "glGetSamplerParameterIuiv(pname=%s)",

+               _mesa_lookup_enum_by_nr(pname));

+}

+

+

+void

+_mesa_init_sampler_object_functions(struct dd_function_table *driver)

+{

+   driver->NewSamplerObject = _mesa_new_sampler_object;

+   driver->DeleteSamplerObject = _mesa_delete_sampler_object;

+}

+

+

+void

+_mesa_init_sampler_object_dispatch(struct _glapi_table *disp)

+{

+   SET_GenSamplers(disp, _mesa_GenSamplers);

+   SET_DeleteSamplers(disp, _mesa_DeleteSamplers);

+   SET_IsSampler(disp, _mesa_IsSampler);

+   SET_BindSampler(disp, _mesa_BindSampler);

+   SET_SamplerParameteri(disp, _mesa_SamplerParameteri);

+   SET_SamplerParameterf(disp, _mesa_SamplerParameterf);

+   SET_SamplerParameteriv(disp, _mesa_SamplerParameteriv);

+   SET_SamplerParameterfv(disp, _mesa_SamplerParameterfv);

+   SET_SamplerParameterIiv(disp, _mesa_SamplerParameterIiv);

+   SET_SamplerParameterIuiv(disp, _mesa_SamplerParameterIuiv);

+   SET_GetSamplerParameteriv(disp, _mesa_GetSamplerParameteriv);

+   SET_GetSamplerParameterfv(disp, _mesa_GetSamplerParameterfv);

+   SET_GetSamplerParameterIiv(disp, _mesa_GetSamplerParameterIiv);

+   SET_GetSamplerParameterIuiv(disp, _mesa_GetSamplerParameterIuiv);

+}

diff --git a/mesalib/src/mesa/main/shared.c b/mesalib/src/mesa/main/shared.c
index 8937e5a5f..a36083a37 100644
--- a/mesalib/src/mesa/main/shared.c
+++ b/mesalib/src/mesa/main/shared.c
@@ -27,8 +27,6 @@
  * Shared-context state

  */

 

-

-

 #include "imports.h"

 #include "mfeatures.h"

 #include "mtypes.h"

@@ -46,6 +44,7 @@
 #include "shaderobj.h"

 #include "syncobj.h"

 

+

 /**

  * Allocate and initialize a shared context state structure.

  * Initializes the display list, texture objects and vertex programs hash

@@ -403,7 +402,8 @@ free_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
  * \sa free_shared_state().

  */

 void

-_mesa_release_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)

+_mesa_release_shared_state(struct gl_context *ctx,

+                           struct gl_shared_state *shared)

 {

    GLint RefCount;

 

diff --git a/mesalib/src/mesa/main/shared.h b/mesalib/src/mesa/main/shared.h
index 870aadeb2..4e0ca2203 100644
--- a/mesalib/src/mesa/main/shared.h
+++ b/mesalib/src/mesa/main/shared.h
@@ -32,7 +32,8 @@ _mesa_alloc_shared_state(struct gl_context *ctx);
 

 

 void

-_mesa_release_shared_state(struct gl_context *ctx, struct gl_shared_state *shared);

+_mesa_release_shared_state(struct gl_context *ctx,

+                           struct gl_shared_state *shared);

 

 

 #endif

diff --git a/mesalib/src/mesa/program/program_parse.y b/mesalib/src/mesa/program/program_parse.y
index e63a9f1e1..292cd5ac1 100644
--- a/mesalib/src/mesa/program/program_parse.y
+++ b/mesalib/src/mesa/program/program_parse.y
@@ -2064,6 +2064,34 @@ optResultFaceType:
 	      ? VERT_RESULT_COL0

 	      : FRAG_RESULT_COLOR;

 	}

+	| '[' INTEGER ']'

+	{

+	   if (state->mode == ARB_vertex) {

+	      yyerror(& @1, state, "invalid program result name");

+	      YYERROR;

+	   } else {

+	      if (!state->option.DrawBuffers) {

+		 /* From the ARB_draw_buffers spec (same text exists

+		  * for ATI_draw_buffers):

+		  *

+		  *     If this option is not specified, a fragment

+		  *     program that attempts to bind

+		  *     "result.color[n]" will fail to load, and only

+		  *     "result.color" will be allowed.

+		  */

+		 yyerror(& @1, state,

+			 "result.color[] used without "

+			 "`OPTION ARB_draw_buffers' or "

+			 "`OPTION ATI_draw_buffers'");

+		 YYERROR;

+	      } else if ($2 >= state->MaxDrawBuffers) {

+		 yyerror(& @1, state,

+			 "result.color[] exceeds MAX_DRAW_BUFFERS_ARB");

+		 YYERROR;

+	      }

+	      $$ = FRAG_RESULT_DATA0 + $2;

+	   }

+	}

 	| FRONT

 	{

 	   if (state->mode == ARB_vertex) {

@@ -2681,6 +2709,7 @@ _mesa_parse_arb_program(struct gl_context *ctx, GLenum target, const GLubyte *st
    state->MaxClipPlanes = ctx->Const.MaxClipPlanes;

    state->MaxLights = ctx->Const.MaxLights;

    state->MaxProgramMatrices = ctx->Const.MaxProgramMatrices;

+   state->MaxDrawBuffers = ctx->Const.MaxDrawBuffers;

 

    state->state_param_enum = (target == GL_VERTEX_PROGRAM_ARB)

       ? STATE_VERTEX_PROGRAM : STATE_FRAGMENT_PROGRAM;

diff --git a/mesalib/src/mesa/program/program_parse_extra.c b/mesalib/src/mesa/program/program_parse_extra.c
index ae98b782b..67ab9b99d 100644
--- a/mesalib/src/mesa/program/program_parse_extra.c
+++ b/mesalib/src/mesa/program/program_parse_extra.c
@@ -1,255 +1,265 @@
-/*
- * Copyright © 2009 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#include <string.h>
-#include "main/mtypes.h"
-#include "prog_instruction.h"
-#include "program_parser.h"
-
-
-/**
- * Extra assembly-level parser routines
- *
- * \author Ian Romanick <ian.d.romanick@intel.com>
- */
-
-int
-_mesa_parse_instruction_suffix(const struct asm_parser_state *state,
-			       const char *suffix,
-			       struct prog_instruction *inst)
-{
-   inst->CondUpdate = 0;
-   inst->CondDst = 0;
-   inst->SaturateMode = SATURATE_OFF;
-   inst->Precision = FLOAT32;
-
-
-   /* The first possible suffix element is the precision specifier from
-    * NV_fragment_program_option.
-    */
-   if (state->option.NV_fragment) {
-      switch (suffix[0]) {
-      case 'H':
-	 inst->Precision = FLOAT16;
-	 suffix++;
-	 break;
-      case 'R':
-	 inst->Precision = FLOAT32;
-	 suffix++;
-	 break;
-      case 'X':
-	 inst->Precision = FIXED12;
-	 suffix++;
-	 break;
-      default:
-	 break;
-      }
-   }
-
-   /* The next possible suffix element is the condition code modifier selection
-    * from NV_fragment_program_option.
-    */
-   if (state->option.NV_fragment) {
-      if (suffix[0] == 'C') {
-	 inst->CondUpdate = 1;
-	 suffix++;
-      }
-   }
-
-
-   /* The final possible suffix element is the saturation selector from
-    * ARB_fragment_program.
-    */
-   if (state->mode == ARB_fragment) {
-      if (strcmp(suffix, "_SAT") == 0) {
-	 inst->SaturateMode = SATURATE_ZERO_ONE;
-	 suffix += 4;
-      }
-   }
-
-
-   /* It is an error for all of the suffix string not to be consumed.
-    */
-   return suffix[0] == '\0';
-}
-
-
-int
-_mesa_parse_cc(const char *s)
-{
-   int cond = 0;
-
-   switch (s[0]) {
-   case 'E':
-      if (s[1] == 'Q') {
-	 cond = COND_EQ;
-      }
-      break;
-
-   case 'F':
-      if (s[1] == 'L') {
-	 cond = COND_FL;
-      }
-      break;
-
-   case 'G':
-      if (s[1] == 'E') {
-	 cond = COND_GE;
-      } else if (s[1] == 'T') {
-	 cond = COND_GT;
-      }
-      break;
-
-   case 'L':
-      if (s[1] == 'E') {
-	 cond = COND_LE;
-      } else if (s[1] == 'T') {
-	 cond = COND_LT;
-      }
-      break;
-
-   case 'N':
-      if (s[1] == 'E') {
-	 cond = COND_NE;
-      }
-      break;
-
-   case 'T':
-      if (s[1] == 'R') {
-	 cond = COND_TR;
-      }
-      break;
-
-   default:
-      break;
-   }
-
-   return ((cond == 0) || (s[2] != '\0')) ? 0 : cond;
-}
-
-
-int
-_mesa_ARBvp_parse_option(struct asm_parser_state *state, const char *option)
-{
-   if (strcmp(option, "ARB_position_invariant") == 0) {
-      state->option.PositionInvariant = 1;
-      return 1;
-   }
-
-   return 0;
-}
-
-
-int
-_mesa_ARBfp_parse_option(struct asm_parser_state *state, const char *option)
-{
-   /* All of the options currently supported start with "ARB_".  The code is
-    * currently structured with nested if-statements because eventually options
-    * that start with "NV_" will be supported.  This structure will result in
-    * less churn when those options are added.
-    */
-   if (strncmp(option, "ARB_", 4) == 0) {
-      /* Advance the pointer past the "ARB_" prefix.
-       */
-      option += 4;
-
-
-      if (strncmp(option, "fog_", 4) == 0) {
-	 option += 4;
-
-	 if (state->option.Fog == OPTION_NONE) {
-	    if (strcmp(option, "exp") == 0) {
-	       state->option.Fog = OPTION_FOG_EXP;
-	       return 1;
-	    } else if (strcmp(option, "exp2") == 0) {
-	       state->option.Fog = OPTION_FOG_EXP2;
-	       return 1;
-	    } else if (strcmp(option, "linear") == 0) {
-	       state->option.Fog = OPTION_FOG_LINEAR;
-	       return 1;
-	    }
-	 }
-
-	 return 0;
-      } else if (strncmp(option, "precision_hint_", 15) == 0) {
-	 option += 15;
-
-	 if (state->option.PrecisionHint == OPTION_NONE) {
-	    if (strcmp(option, "nicest") == 0) {
-	       state->option.PrecisionHint = OPTION_NICEST;
-	       return 1;
-	    } else if (strcmp(option, "fastest") == 0) {
-	       state->option.PrecisionHint = OPTION_FASTEST;
-	       return 1;
-	    }
-	 }
-
-	 return 0;
-      } else if (strcmp(option, "draw_buffers") == 0) {
-	 /* Don't need to check extension availability because all Mesa-based
-	  * drivers support GL_ARB_draw_buffers.
-	  */
-	 state->option.DrawBuffers = 1;
-	 return 1;
-      } else if (strcmp(option, "fragment_program_shadow") == 0) {
-	 if (state->ctx->Extensions.ARB_fragment_program_shadow) {
-	    state->option.Shadow = 1;
-	    return 1;
-	 }
-      } else if (strncmp(option, "fragment_coord_", 15) == 0) {
-         option += 15;
-         if (state->ctx->Extensions.ARB_fragment_coord_conventions) {
-            if (strcmp(option, "origin_upper_left") == 0) {
-               state->option.OriginUpperLeft = 1;
-               return 1;
-            }
-            else if (strcmp(option, "pixel_center_integer") == 0) {
-               state->option.PixelCenterInteger = 1;
-               return 1;
-            }
-         }
-      }
-   } else if (strncmp(option, "NV_fragment_program", 19) == 0) {
-      option += 19;
-
-      /* Other NV_fragment_program strings may be supported later.
-       */
-      if (option[0] == '\0') {
-	 if (state->ctx->Extensions.NV_fragment_program_option) {
-	    state->option.NV_fragment = 1;
-	    return 1;
-	 }
-      }
-   } else if (strncmp(option, "MESA_", 5) == 0) {
-      option += 5;
-
-      if (strcmp(option, "texture_array") == 0) {
-	 if (state->ctx->Extensions.MESA_texture_array) {
-	    state->option.TexArray = 1;
-	    return 1;
-	 }
-      }
-   }
-
-   return 0;
-}
+/*

+ * Copyright © 2009 Intel Corporation

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the next

+ * paragraph) shall be included in all copies or substantial portions of the

+ * Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ */

+

+#include <string.h>

+#include "main/mtypes.h"

+#include "prog_instruction.h"

+#include "program_parser.h"

+

+

+/**

+ * Extra assembly-level parser routines

+ *

+ * \author Ian Romanick <ian.d.romanick@intel.com>

+ */

+

+int

+_mesa_parse_instruction_suffix(const struct asm_parser_state *state,

+			       const char *suffix,

+			       struct prog_instruction *inst)

+{

+   inst->CondUpdate = 0;

+   inst->CondDst = 0;

+   inst->SaturateMode = SATURATE_OFF;

+   inst->Precision = FLOAT32;

+

+

+   /* The first possible suffix element is the precision specifier from

+    * NV_fragment_program_option.

+    */

+   if (state->option.NV_fragment) {

+      switch (suffix[0]) {

+      case 'H':

+	 inst->Precision = FLOAT16;

+	 suffix++;

+	 break;

+      case 'R':

+	 inst->Precision = FLOAT32;

+	 suffix++;

+	 break;

+      case 'X':

+	 inst->Precision = FIXED12;

+	 suffix++;

+	 break;

+      default:

+	 break;

+      }

+   }

+

+   /* The next possible suffix element is the condition code modifier selection

+    * from NV_fragment_program_option.

+    */

+   if (state->option.NV_fragment) {

+      if (suffix[0] == 'C') {

+	 inst->CondUpdate = 1;

+	 suffix++;

+      }

+   }

+

+

+   /* The final possible suffix element is the saturation selector from

+    * ARB_fragment_program.

+    */

+   if (state->mode == ARB_fragment) {

+      if (strcmp(suffix, "_SAT") == 0) {

+	 inst->SaturateMode = SATURATE_ZERO_ONE;

+	 suffix += 4;

+      }

+   }

+

+

+   /* It is an error for all of the suffix string not to be consumed.

+    */

+   return suffix[0] == '\0';

+}

+

+

+int

+_mesa_parse_cc(const char *s)

+{

+   int cond = 0;

+

+   switch (s[0]) {

+   case 'E':

+      if (s[1] == 'Q') {

+	 cond = COND_EQ;

+      }

+      break;

+

+   case 'F':

+      if (s[1] == 'L') {

+	 cond = COND_FL;

+      }

+      break;

+

+   case 'G':

+      if (s[1] == 'E') {

+	 cond = COND_GE;

+      } else if (s[1] == 'T') {

+	 cond = COND_GT;

+      }

+      break;

+

+   case 'L':

+      if (s[1] == 'E') {

+	 cond = COND_LE;

+      } else if (s[1] == 'T') {

+	 cond = COND_LT;

+      }

+      break;

+

+   case 'N':

+      if (s[1] == 'E') {

+	 cond = COND_NE;

+      }

+      break;

+

+   case 'T':

+      if (s[1] == 'R') {

+	 cond = COND_TR;

+      }

+      break;

+

+   default:

+      break;

+   }

+

+   return ((cond == 0) || (s[2] != '\0')) ? 0 : cond;

+}

+

+

+int

+_mesa_ARBvp_parse_option(struct asm_parser_state *state, const char *option)

+{

+   if (strcmp(option, "ARB_position_invariant") == 0) {

+      state->option.PositionInvariant = 1;

+      return 1;

+   }

+

+   return 0;

+}

+

+

+int

+_mesa_ARBfp_parse_option(struct asm_parser_state *state, const char *option)

+{

+   /* All of the options currently supported start with "ARB_".  The code is

+    * currently structured with nested if-statements because eventually options

+    * that start with "NV_" will be supported.  This structure will result in

+    * less churn when those options are added.

+    */

+   if (strncmp(option, "ARB_", 4) == 0) {

+      /* Advance the pointer past the "ARB_" prefix.

+       */

+      option += 4;

+

+

+      if (strncmp(option, "fog_", 4) == 0) {

+	 option += 4;

+

+	 if (state->option.Fog == OPTION_NONE) {

+	    if (strcmp(option, "exp") == 0) {

+	       state->option.Fog = OPTION_FOG_EXP;

+	       return 1;

+	    } else if (strcmp(option, "exp2") == 0) {

+	       state->option.Fog = OPTION_FOG_EXP2;

+	       return 1;

+	    } else if (strcmp(option, "linear") == 0) {

+	       state->option.Fog = OPTION_FOG_LINEAR;

+	       return 1;

+	    }

+	 }

+

+	 return 0;

+      } else if (strncmp(option, "precision_hint_", 15) == 0) {

+	 option += 15;

+

+	 if (state->option.PrecisionHint == OPTION_NONE) {

+	    if (strcmp(option, "nicest") == 0) {

+	       state->option.PrecisionHint = OPTION_NICEST;

+	       return 1;

+	    } else if (strcmp(option, "fastest") == 0) {

+	       state->option.PrecisionHint = OPTION_FASTEST;

+	       return 1;

+	    }

+	 }

+

+	 return 0;

+      } else if (strcmp(option, "draw_buffers") == 0) {

+	 /* Don't need to check extension availability because all Mesa-based

+	  * drivers support GL_ARB_draw_buffers.

+	  */

+	 state->option.DrawBuffers = 1;

+	 return 1;

+      } else if (strcmp(option, "fragment_program_shadow") == 0) {

+	 if (state->ctx->Extensions.ARB_fragment_program_shadow) {

+	    state->option.Shadow = 1;

+	    return 1;

+	 }

+      } else if (strncmp(option, "fragment_coord_", 15) == 0) {

+         option += 15;

+         if (state->ctx->Extensions.ARB_fragment_coord_conventions) {

+            if (strcmp(option, "origin_upper_left") == 0) {

+               state->option.OriginUpperLeft = 1;

+               return 1;

+            }

+            else if (strcmp(option, "pixel_center_integer") == 0) {

+               state->option.PixelCenterInteger = 1;

+               return 1;

+            }

+         }

+      }

+   } else if (strncmp(option, "ATI_", 4) == 0) {

+      option += 4;

+

+      if (strcmp(option, "draw_buffers") == 0) {

+	 /* Don't need to check extension availability because all Mesa-based

+	  * drivers support GL_ATI_draw_buffers.

+	  */

+	 state->option.DrawBuffers = 1;

+	 return 1;

+      }

+   } else if (strncmp(option, "NV_fragment_program", 19) == 0) {

+      option += 19;

+

+      /* Other NV_fragment_program strings may be supported later.

+       */

+      if (option[0] == '\0') {

+	 if (state->ctx->Extensions.NV_fragment_program_option) {

+	    state->option.NV_fragment = 1;

+	    return 1;

+	 }

+      }

+   } else if (strncmp(option, "MESA_", 5) == 0) {

+      option += 5;

+

+      if (strcmp(option, "texture_array") == 0) {

+	 if (state->ctx->Extensions.MESA_texture_array) {

+	    state->option.TexArray = 1;

+	    return 1;

+	 }

+      }

+   }

+

+   return 0;

+}

diff --git a/mesalib/src/mesa/program/program_parser.h b/mesalib/src/mesa/program/program_parser.h
index ff2f4f25f..cbbb2677d 100644
--- a/mesalib/src/mesa/program/program_parser.h
+++ b/mesalib/src/mesa/program/program_parser.h
@@ -173,6 +173,7 @@ struct asm_parser_state {
    unsigned MaxClipPlanes;

    unsigned MaxLights;

    unsigned MaxProgramMatrices;

+   unsigned MaxDrawBuffers;

    /*@}*/

 

    /**

diff --git a/mesalib/src/mesa/state_tracker/st_atom_texture.c b/mesalib/src/mesa/state_tracker/st_atom_texture.c
index 532e9b5a3..4277a24b0 100644
--- a/mesalib/src/mesa/state_tracker/st_atom_texture.c
+++ b/mesalib/src/mesa/state_tracker/st_atom_texture.c
@@ -251,13 +251,15 @@ update_textures(struct st_context *st)
          st->state.num_textures = su + 1;

 

 	 /* if sampler view has changed dereference it */

-	 if (stObj->sampler_view)

+	 if (stObj->sampler_view) {

             if (check_sampler_swizzle(stObj->sampler_view,

                                       stObj->base._Swizzle,

                                       samp->DepthMode) ||

                 (st_view_format != stObj->sampler_view->format) ||

-                stObj->base.BaseLevel != stObj->sampler_view->u.tex.first_level)

+                stObj->base.BaseLevel != stObj->sampler_view->u.tex.first_level) {

 	       pipe_sampler_view_reference(&stObj->sampler_view, NULL);

+            }

+         }

 

          sampler_view = st_get_texture_sampler_view_from_stobj(stObj, pipe,

                                                                samp,

@@ -269,10 +271,12 @@ update_textures(struct st_context *st)
    cso_set_fragment_sampler_views(st->cso_context,

                                   st->state.num_textures,

                                   st->state.sampler_views);

+

    if (st->ctx->Const.MaxVertexTextureImageUnits > 0) {

+      GLuint numUnits = MIN2(st->state.num_textures,

+                             st->ctx->Const.MaxVertexTextureImageUnits);

       cso_set_vertex_sampler_views(st->cso_context,

-                                   MIN2(st->state.num_textures,

-                                        st->ctx->Const.MaxVertexTextureImageUnits),

+                                   numUnits,

                                    st->state.sampler_views);

    }

 }