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-rwxr-xr-xmesalib/src/glsl/ir.cpp2
-rw-r--r--mesalib/src/glsl/ir.h1
-rw-r--r--mesalib/src/glsl/ir_builder.cpp6
-rwxr-xr-xmesalib/src/glsl/ir_constant_expression.cpp6
-rw-r--r--mesalib/src/glsl/ir_optimization.h1
-rw-r--r--mesalib/src/glsl/ir_validate.cpp1
-rw-r--r--mesalib/src/glsl/linker.cpp4
-rw-r--r--mesalib/src/glsl/lower_instructions.cpp29
-rw-r--r--mesalib/src/glsl/opt_algebraic.cpp98
9 files changed, 142 insertions, 6 deletions
diff --git a/mesalib/src/glsl/ir.cpp b/mesalib/src/glsl/ir.cpp
index c2bfda938..4229a2bf4 100755
--- a/mesalib/src/glsl/ir.cpp
+++ b/mesalib/src/glsl/ir.cpp
@@ -255,6 +255,7 @@ ir_expression::ir_expression(int op, ir_rvalue *op0)
case ir_unop_dFdy_fine:
case ir_unop_bitfield_reverse:
case ir_unop_interpolate_at_centroid:
+ case ir_unop_saturate:
this->type = op0->type;
break;
@@ -534,6 +535,7 @@ static const char *const operator_strs[] = {
"bit_count",
"find_msb",
"find_lsb",
+ "sat",
"noise",
"interpolate_at_centroid",
"+",
diff --git a/mesalib/src/glsl/ir.h b/mesalib/src/glsl/ir.h
index e9051732b..8003f88ce 100644
--- a/mesalib/src/glsl/ir.h
+++ b/mesalib/src/glsl/ir.h
@@ -1250,6 +1250,7 @@ enum ir_expression_operation {
ir_unop_find_lsb,
/*@}*/
+ ir_unop_saturate,
ir_unop_noise,
/**
diff --git a/mesalib/src/glsl/ir_builder.cpp b/mesalib/src/glsl/ir_builder.cpp
index f03941443..a2f6f2967 100644
--- a/mesalib/src/glsl/ir_builder.cpp
+++ b/mesalib/src/glsl/ir_builder.cpp
@@ -271,11 +271,7 @@ clamp(operand a, operand b, operand c)
ir_expression *
saturate(operand a)
{
- void *mem_ctx = ralloc_parent(a.val);
-
- return expr(ir_binop_max,
- expr(ir_binop_min, a, new(mem_ctx) ir_constant(1.0f)),
- new(mem_ctx) ir_constant(0.0f));
+ return expr(ir_unop_saturate, a);
}
ir_expression *
diff --git a/mesalib/src/glsl/ir_constant_expression.cpp b/mesalib/src/glsl/ir_constant_expression.cpp
index eff2bc173..4593a13d1 100755
--- a/mesalib/src/glsl/ir_constant_expression.cpp
+++ b/mesalib/src/glsl/ir_constant_expression.cpp
@@ -1462,6 +1462,12 @@ ir_expression::constant_expression_value(struct hash_table *variable_context)
}
break;
+ case ir_unop_saturate:
+ for (unsigned c = 0; c < components; c++) {
+ data.f[c] = CLAMP(op[0]->value.f[c], 0.0f, 1.0f);
+ }
+ break;
+
case ir_triop_bitfield_extract: {
int offset = op[1]->value.i[0];
int bits = op[2]->value.i[0];
diff --git a/mesalib/src/glsl/ir_optimization.h b/mesalib/src/glsl/ir_optimization.h
index b83c22592..1c6f72b54 100644
--- a/mesalib/src/glsl/ir_optimization.h
+++ b/mesalib/src/glsl/ir_optimization.h
@@ -40,6 +40,7 @@
#define LDEXP_TO_ARITH 0x100
#define CARRY_TO_ARITH 0x200
#define BORROW_TO_ARITH 0x400
+#define SAT_TO_CLAMP 0x800
/**
* \see class lower_packing_builtins_visitor
diff --git a/mesalib/src/glsl/ir_validate.cpp b/mesalib/src/glsl/ir_validate.cpp
index 5b2067782..97a581dc2 100644
--- a/mesalib/src/glsl/ir_validate.cpp
+++ b/mesalib/src/glsl/ir_validate.cpp
@@ -241,6 +241,7 @@ ir_validate::visit_leave(ir_expression *ir)
case ir_unop_log:
case ir_unop_exp2:
case ir_unop_log2:
+ case ir_unop_saturate:
assert(ir->operands[0]->type->base_type == GLSL_TYPE_FLOAT);
assert(ir->type == ir->operands[0]->type);
break;
diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp
index d5473adc3..57be4931d 100644
--- a/mesalib/src/glsl/linker.cpp
+++ b/mesalib/src/glsl/linker.cpp
@@ -2439,8 +2439,10 @@ check_explicit_uniform_locations(struct gl_context *ctx,
ir_variable *var = node->as_variable();
if ((var && var->data.mode == ir_var_uniform) &&
var->data.explicit_location) {
- if (!reserve_explicit_locations(prog, uniform_map, var))
+ if (!reserve_explicit_locations(prog, uniform_map, var)) {
+ delete uniform_map;
return;
+ }
}
}
}
diff --git a/mesalib/src/glsl/lower_instructions.cpp b/mesalib/src/glsl/lower_instructions.cpp
index 176070c87..684285350 100644
--- a/mesalib/src/glsl/lower_instructions.cpp
+++ b/mesalib/src/glsl/lower_instructions.cpp
@@ -41,6 +41,7 @@
* - BITFIELD_INSERT_TO_BFM_BFI
* - CARRY_TO_ARITH
* - BORROW_TO_ARITH
+ * - SAT_TO_CLAMP
*
* SUB_TO_ADD_NEG:
* ---------------
@@ -104,6 +105,10 @@
* ----------------
* Converts ir_borrow into (x < y).
*
+ * SAT_TO_CLAMP:
+ * -------------
+ * Converts ir_unop_saturate into min(max(x, 0.0), 1.0)
+ *
*/
#include "main/core.h" /* for M_LOG2E */
@@ -139,6 +144,7 @@ private:
void ldexp_to_arith(ir_expression *);
void carry_to_arith(ir_expression *);
void borrow_to_arith(ir_expression *);
+ void sat_to_clamp(ir_expression *);
};
} /* anonymous namespace */
@@ -484,6 +490,24 @@ lower_instructions_visitor::borrow_to_arith(ir_expression *ir)
this->progress = true;
}
+void
+lower_instructions_visitor::sat_to_clamp(ir_expression *ir)
+{
+ /* Translates
+ * ir_unop_saturate x
+ * into
+ * ir_binop_min (ir_binop_max(x, 0.0), 1.0)
+ */
+
+ ir->operation = ir_binop_min;
+ ir->operands[0] = new(ir) ir_expression(ir_binop_max, ir->operands[0]->type,
+ ir->operands[0],
+ new(ir) ir_constant(0.0f));
+ ir->operands[1] = new(ir) ir_constant(1.0f);
+
+ this->progress = true;
+}
+
ir_visitor_status
lower_instructions_visitor::visit_leave(ir_expression *ir)
{
@@ -540,6 +564,11 @@ lower_instructions_visitor::visit_leave(ir_expression *ir)
borrow_to_arith(ir);
break;
+ case ir_unop_saturate:
+ if (lowering(SAT_TO_CLAMP))
+ sat_to_clamp(ir);
+ break;
+
default:
return visit_continue;
}
diff --git a/mesalib/src/glsl/opt_algebraic.cpp b/mesalib/src/glsl/opt_algebraic.cpp
index ac7514acf..447618f9e 100644
--- a/mesalib/src/glsl/opt_algebraic.cpp
+++ b/mesalib/src/glsl/opt_algebraic.cpp
@@ -110,6 +110,48 @@ is_vec_basis(ir_constant *ir)
return (ir == NULL) ? false : ir->is_basis();
}
+static inline bool
+is_valid_vec_const(ir_constant *ir)
+{
+ if (ir == NULL)
+ return false;
+
+ if (!ir->type->is_scalar() && !ir->type->is_vector())
+ return false;
+
+ return true;
+}
+
+static inline bool
+is_less_than_one(ir_constant *ir)
+{
+ if (!is_valid_vec_const(ir))
+ return false;
+
+ unsigned component = 0;
+ for (int c = 0; c < ir->type->vector_elements; c++) {
+ if (ir->get_float_component(c) < 1.0f)
+ component++;
+ }
+
+ return (component == ir->type->vector_elements);
+}
+
+static inline bool
+is_greater_than_zero(ir_constant *ir)
+{
+ if (!is_valid_vec_const(ir))
+ return false;
+
+ unsigned component = 0;
+ for (int c = 0; c < ir->type->vector_elements; c++) {
+ if (ir->get_float_component(c) > 0.0f)
+ component++;
+ }
+
+ return (component == ir->type->vector_elements);
+}
+
static void
update_type(ir_expression *ir)
{
@@ -614,6 +656,62 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
break;
+ case ir_binop_min:
+ case ir_binop_max:
+ if (ir->type->base_type != GLSL_TYPE_FLOAT)
+ break;
+
+ /* Replace min(max) operations and its commutative combinations with
+ * a saturate operation
+ */
+ for (int op = 0; op < 2; op++) {
+ ir_expression *minmax = op_expr[op];
+ ir_constant *outer_const = op_const[1 - op];
+ ir_expression_operation op_cond = (ir->operation == ir_binop_max) ?
+ ir_binop_min : ir_binop_max;
+
+ if (!minmax || !outer_const || (minmax->operation != op_cond))
+ continue;
+
+ /* Found a min(max) combination. Now try to see if its operands
+ * meet our conditions that we can do just a single saturate operation
+ */
+ for (int minmax_op = 0; minmax_op < 2; minmax_op++) {
+ ir_rvalue *inner_val_a = minmax->operands[minmax_op];
+ ir_rvalue *inner_val_b = minmax->operands[1 - minmax_op];
+
+ if (!inner_val_a || !inner_val_b)
+ continue;
+
+ /* Found a {min|max} ({max|min} (x, 0.0), 1.0) operation and its variations */
+ if ((outer_const->is_one() && inner_val_a->is_zero()) ||
+ (inner_val_a->is_one() && outer_const->is_zero()))
+ return saturate(inner_val_b);
+
+ /* Found a {min|max} ({max|min} (x, 0.0), b) where b < 1.0
+ * and its variations
+ */
+ if (is_less_than_one(outer_const) && inner_val_b->is_zero())
+ return expr(ir_binop_min, saturate(inner_val_a), outer_const);
+
+ if (!inner_val_b->as_constant())
+ continue;
+
+ if (is_less_than_one(inner_val_b->as_constant()) && outer_const->is_zero())
+ return expr(ir_binop_min, saturate(inner_val_a), inner_val_b);
+
+ /* Found a {min|max} ({max|min} (x, b), 1.0), where b > 0.0
+ * and its variations
+ */
+ if (outer_const->is_one() && is_greater_than_zero(inner_val_b->as_constant()))
+ return expr(ir_binop_max, saturate(inner_val_a), inner_val_b);
+ if (inner_val_b->as_constant()->is_one() && is_greater_than_zero(outer_const))
+ return expr(ir_binop_max, saturate(inner_val_a), outer_const);
+ }
+ }
+
+ break;
+
case ir_unop_rcp:
if (op_expr[0] && op_expr[0]->operation == ir_unop_rcp)
return op_expr[0]->operands[0];
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