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-rw-r--r--mesalib/src/mesa/program/program.c2154
1 files changed, 1077 insertions, 1077 deletions
diff --git a/mesalib/src/mesa/program/program.c b/mesalib/src/mesa/program/program.c
index 79034ab26..e0bffc7c6 100644
--- a/mesalib/src/mesa/program/program.c
+++ b/mesalib/src/mesa/program/program.c
@@ -1,1077 +1,1077 @@
-/*
- * Mesa 3-D graphics library
- * Version: 6.5.3
- *
- * Copyright (C) 1999-2007 Brian Paul 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 program.c
- * Vertex and fragment program support functions.
- * \author Brian Paul
- */
-
-
-#include "main/glheader.h"
-#include "main/context.h"
-#include "main/hash.h"
-#include "main/mfeatures.h"
-#include "program.h"
-#include "prog_cache.h"
-#include "prog_parameter.h"
-#include "prog_instruction.h"
-
-
-/**
- * A pointer to this dummy program is put into the hash table when
- * glGenPrograms is called.
- */
-struct gl_program _mesa_DummyProgram;
-
-
-/**
- * Init context's vertex/fragment program state
- */
-void
-_mesa_init_program(struct gl_context *ctx)
-{
- GLuint i;
-
- /*
- * If this assertion fails, we need to increase the field
- * size for register indexes (see INST_INDEX_BITS).
- */
- ASSERT(ctx->Const.VertexProgram.MaxUniformComponents / 4
- <= (1 << INST_INDEX_BITS));
- ASSERT(ctx->Const.FragmentProgram.MaxUniformComponents / 4
- <= (1 << INST_INDEX_BITS));
-
- ASSERT(ctx->Const.VertexProgram.MaxTemps <= (1 << INST_INDEX_BITS));
- ASSERT(ctx->Const.VertexProgram.MaxLocalParams <= (1 << INST_INDEX_BITS));
- ASSERT(ctx->Const.FragmentProgram.MaxTemps <= (1 << INST_INDEX_BITS));
- ASSERT(ctx->Const.FragmentProgram.MaxLocalParams <= (1 << INST_INDEX_BITS));
-
- ASSERT(ctx->Const.VertexProgram.MaxUniformComponents <= 4 * MAX_UNIFORMS);
- ASSERT(ctx->Const.FragmentProgram.MaxUniformComponents <= 4 * MAX_UNIFORMS);
-
- ASSERT(ctx->Const.VertexProgram.MaxAddressOffset <= (1 << INST_INDEX_BITS));
- ASSERT(ctx->Const.FragmentProgram.MaxAddressOffset <= (1 << INST_INDEX_BITS));
-
- /* If this fails, increase prog_instruction::TexSrcUnit size */
- ASSERT(MAX_TEXTURE_UNITS < (1 << 5));
-
- /* If this fails, increase prog_instruction::TexSrcTarget size */
- ASSERT(NUM_TEXTURE_TARGETS < (1 << 3));
-
- ctx->Program.ErrorPos = -1;
- ctx->Program.ErrorString = _mesa_strdup("");
-
-#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
- ctx->VertexProgram.Enabled = GL_FALSE;
-#if FEATURE_es2_glsl
- ctx->VertexProgram.PointSizeEnabled =
- (ctx->API == API_OPENGLES2) ? GL_TRUE : GL_FALSE;
-#else
- ctx->VertexProgram.PointSizeEnabled = GL_FALSE;
-#endif
- ctx->VertexProgram.TwoSideEnabled = GL_FALSE;
- _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
- ctx->Shared->DefaultVertexProgram);
- assert(ctx->VertexProgram.Current);
- for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) {
- ctx->VertexProgram.TrackMatrix[i] = GL_NONE;
- ctx->VertexProgram.TrackMatrixTransform[i] = GL_IDENTITY_NV;
- }
- ctx->VertexProgram.Cache = _mesa_new_program_cache();
-#endif
-
-#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
- ctx->FragmentProgram.Enabled = GL_FALSE;
- _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
- ctx->Shared->DefaultFragmentProgram);
- assert(ctx->FragmentProgram.Current);
- ctx->FragmentProgram.Cache = _mesa_new_program_cache();
-#endif
-
-#if FEATURE_ARB_geometry_shader4
- ctx->GeometryProgram.Enabled = GL_FALSE;
- /* right now by default we don't have a geometry program */
- _mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current,
- NULL);
- ctx->GeometryProgram.Cache = _mesa_new_program_cache();
-#endif
-
- /* XXX probably move this stuff */
-#if FEATURE_ATI_fragment_shader
- ctx->ATIFragmentShader.Enabled = GL_FALSE;
- ctx->ATIFragmentShader.Current = ctx->Shared->DefaultFragmentShader;
- assert(ctx->ATIFragmentShader.Current);
- ctx->ATIFragmentShader.Current->RefCount++;
-#endif
-}
-
-
-/**
- * Free a context's vertex/fragment program state
- */
-void
-_mesa_free_program_data(struct gl_context *ctx)
-{
-#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
- _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, NULL);
- _mesa_delete_program_cache(ctx, ctx->VertexProgram.Cache);
-#endif
-#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
- _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current, NULL);
- _mesa_delete_program_cache(ctx, ctx->FragmentProgram.Cache);
-#endif
-#if FEATURE_ARB_geometry_shader4
- _mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current, NULL);
- _mesa_delete_program_cache(ctx, ctx->GeometryProgram.Cache);
-#endif
- /* XXX probably move this stuff */
-#if FEATURE_ATI_fragment_shader
- if (ctx->ATIFragmentShader.Current) {
- ctx->ATIFragmentShader.Current->RefCount--;
- if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
- free(ctx->ATIFragmentShader.Current);
- }
- }
-#endif
- free((void *) ctx->Program.ErrorString);
-}
-
-
-/**
- * Update the default program objects in the given context to reference those
- * specified in the shared state and release those referencing the old
- * shared state.
- */
-void
-_mesa_update_default_objects_program(struct gl_context *ctx)
-{
-#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
- _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
- (struct gl_vertex_program *)
- ctx->Shared->DefaultVertexProgram);
- assert(ctx->VertexProgram.Current);
-#endif
-
-#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
- _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
- (struct gl_fragment_program *)
- ctx->Shared->DefaultFragmentProgram);
- assert(ctx->FragmentProgram.Current);
-#endif
-
-#if FEATURE_ARB_geometry_shader4
- _mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current,
- (struct gl_geometry_program *)
- ctx->Shared->DefaultGeometryProgram);
-#endif
-
- /* XXX probably move this stuff */
-#if FEATURE_ATI_fragment_shader
- if (ctx->ATIFragmentShader.Current) {
- ctx->ATIFragmentShader.Current->RefCount--;
- if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
- free(ctx->ATIFragmentShader.Current);
- }
- }
- ctx->ATIFragmentShader.Current = (struct ati_fragment_shader *) ctx->Shared->DefaultFragmentShader;
- assert(ctx->ATIFragmentShader.Current);
- ctx->ATIFragmentShader.Current->RefCount++;
-#endif
-}
-
-
-/**
- * Set the vertex/fragment program error state (position and error string).
- * This is generally called from within the parsers.
- */
-void
-_mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string)
-{
- ctx->Program.ErrorPos = pos;
- free((void *) ctx->Program.ErrorString);
- if (!string)
- string = "";
- ctx->Program.ErrorString = _mesa_strdup(string);
-}
-
-
-/**
- * Find the line number and column for 'pos' within 'string'.
- * Return a copy of the line which contains 'pos'. Free the line with
- * free().
- * \param string the program string
- * \param pos the position within the string
- * \param line returns the line number corresponding to 'pos'.
- * \param col returns the column number corresponding to 'pos'.
- * \return copy of the line containing 'pos'.
- */
-const GLubyte *
-_mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
- GLint *line, GLint *col)
-{
- const GLubyte *lineStart = string;
- const GLubyte *p = string;
- GLubyte *s;
- int len;
-
- *line = 1;
-
- while (p != pos) {
- if (*p == (GLubyte) '\n') {
- (*line)++;
- lineStart = p + 1;
- }
- p++;
- }
-
- *col = (pos - lineStart) + 1;
-
- /* return copy of this line */
- while (*p != 0 && *p != '\n')
- p++;
- len = p - lineStart;
- s = (GLubyte *) malloc(len + 1);
- memcpy(s, lineStart, len);
- s[len] = 0;
-
- return s;
-}
-
-
-/**
- * Initialize a new vertex/fragment program object.
- */
-static struct gl_program *
-_mesa_init_program_struct( struct gl_context *ctx, struct gl_program *prog,
- GLenum target, GLuint id)
-{
- (void) ctx;
- if (prog) {
- GLuint i;
- memset(prog, 0, sizeof(*prog));
- prog->Id = id;
- prog->Target = target;
- prog->Resident = GL_TRUE;
- prog->RefCount = 1;
- prog->Format = GL_PROGRAM_FORMAT_ASCII_ARB;
-
- /* default mapping from samplers to texture units */
- for (i = 0; i < MAX_SAMPLERS; i++)
- prog->SamplerUnits[i] = i;
- }
-
- return prog;
-}
-
-
-/**
- * Initialize a new fragment program object.
- */
-struct gl_program *
-_mesa_init_fragment_program( struct gl_context *ctx, struct gl_fragment_program *prog,
- GLenum target, GLuint id)
-{
- if (prog)
- return _mesa_init_program_struct( ctx, &prog->Base, target, id );
- else
- return NULL;
-}
-
-
-/**
- * Initialize a new vertex program object.
- */
-struct gl_program *
-_mesa_init_vertex_program( struct gl_context *ctx, struct gl_vertex_program *prog,
- GLenum target, GLuint id)
-{
- if (prog)
- return _mesa_init_program_struct( ctx, &prog->Base, target, id );
- else
- return NULL;
-}
-
-
-/**
- * Initialize a new geometry program object.
- */
-struct gl_program *
-_mesa_init_geometry_program( struct gl_context *ctx, struct gl_geometry_program *prog,
- GLenum target, GLuint id)
-{
- if (prog)
- return _mesa_init_program_struct( ctx, &prog->Base, target, id );
- else
- return NULL;
-}
-
-
-/**
- * Allocate and initialize a new fragment/vertex program object but
- * don't put it into the program hash table. Called via
- * ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
- * device driver function to implement OO deriviation with additional
- * types not understood by this function.
- *
- * \param ctx context
- * \param id program id/number
- * \param target program target/type
- * \return pointer to new program object
- */
-struct gl_program *
-_mesa_new_program(struct gl_context *ctx, GLenum target, GLuint id)
-{
- struct gl_program *prog;
- switch (target) {
- case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
- case GL_VERTEX_STATE_PROGRAM_NV:
- prog = _mesa_init_vertex_program(ctx, CALLOC_STRUCT(gl_vertex_program),
- target, id );
- break;
- case GL_FRAGMENT_PROGRAM_NV:
- case GL_FRAGMENT_PROGRAM_ARB:
- prog =_mesa_init_fragment_program(ctx,
- CALLOC_STRUCT(gl_fragment_program),
- target, id );
- break;
- case MESA_GEOMETRY_PROGRAM:
- prog = _mesa_init_geometry_program(ctx,
- CALLOC_STRUCT(gl_geometry_program),
- target, id);
- break;
- default:
- _mesa_problem(ctx, "bad target in _mesa_new_program");
- prog = NULL;
- }
- return prog;
-}
-
-
-/**
- * Delete a program and remove it from the hash table, ignoring the
- * reference count.
- * Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
- * by a device driver function.
- */
-void
-_mesa_delete_program(struct gl_context *ctx, struct gl_program *prog)
-{
- (void) ctx;
- ASSERT(prog);
- ASSERT(prog->RefCount==0);
-
- if (prog == &_mesa_DummyProgram)
- return;
-
- if (prog->String)
- free(prog->String);
-
- _mesa_free_instructions(prog->Instructions, prog->NumInstructions);
-
- if (prog->Parameters) {
- _mesa_free_parameter_list(prog->Parameters);
- }
- if (prog->Varying) {
- _mesa_free_parameter_list(prog->Varying);
- }
- if (prog->Attributes) {
- _mesa_free_parameter_list(prog->Attributes);
- }
-
- free(prog);
-}
-
-
-/**
- * Return the gl_program object for a given ID.
- * Basically just a wrapper for _mesa_HashLookup() to avoid a lot of
- * casts elsewhere.
- */
-struct gl_program *
-_mesa_lookup_program(struct gl_context *ctx, GLuint id)
-{
- if (id)
- return (struct gl_program *) _mesa_HashLookup(ctx->Shared->Programs, id);
- else
- return NULL;
-}
-
-
-/**
- * Reference counting for vertex/fragment programs
- */
-void
-_mesa_reference_program(struct gl_context *ctx,
- struct gl_program **ptr,
- struct gl_program *prog)
-{
- assert(ptr);
- if (*ptr && prog) {
- /* sanity check */
- if ((*ptr)->Target == GL_VERTEX_PROGRAM_ARB)
- ASSERT(prog->Target == GL_VERTEX_PROGRAM_ARB);
- else if ((*ptr)->Target == GL_FRAGMENT_PROGRAM_ARB)
- ASSERT(prog->Target == GL_FRAGMENT_PROGRAM_ARB ||
- prog->Target == GL_FRAGMENT_PROGRAM_NV);
- else if ((*ptr)->Target == MESA_GEOMETRY_PROGRAM)
- ASSERT(prog->Target == MESA_GEOMETRY_PROGRAM);
- }
- if (*ptr == prog) {
- return; /* no change */
- }
- if (*ptr) {
- GLboolean deleteFlag;
-
- /*_glthread_LOCK_MUTEX((*ptr)->Mutex);*/
-#if 0
- printf("Program %p ID=%u Target=%s Refcount-- to %d\n",
- *ptr, (*ptr)->Id,
- ((*ptr)->Target == GL_VERTEX_PROGRAM_ARB ? "VP" :
- ((*ptr)->Target == MESA_GEOMETRY_PROGRAM ? "GP" : "FP")),
- (*ptr)->RefCount - 1);
-#endif
- ASSERT((*ptr)->RefCount > 0);
- (*ptr)->RefCount--;
-
- deleteFlag = ((*ptr)->RefCount == 0);
- /*_glthread_UNLOCK_MUTEX((*ptr)->Mutex);*/
-
- if (deleteFlag) {
- ASSERT(ctx);
- ctx->Driver.DeleteProgram(ctx, *ptr);
- }
-
- *ptr = NULL;
- }
-
- assert(!*ptr);
- if (prog) {
- /*_glthread_LOCK_MUTEX(prog->Mutex);*/
- prog->RefCount++;
-#if 0
- printf("Program %p ID=%u Target=%s Refcount++ to %d\n",
- prog, prog->Id,
- (prog->Target == GL_VERTEX_PROGRAM_ARB ? "VP" :
- (prog->Target == MESA_GEOMETRY_PROGRAM ? "GP" : "FP")),
- prog->RefCount);
-#endif
- /*_glthread_UNLOCK_MUTEX(prog->Mutex);*/
- }
-
- *ptr = prog;
-}
-
-
-/**
- * Return a copy of a program.
- * XXX Problem here if the program object is actually OO-derivation
- * made by a device driver.
- */
-struct gl_program *
-_mesa_clone_program(struct gl_context *ctx, const struct gl_program *prog)
-{
- struct gl_program *clone;
-
- clone = ctx->Driver.NewProgram(ctx, prog->Target, prog->Id);
- if (!clone)
- return NULL;
-
- assert(clone->Target == prog->Target);
- assert(clone->RefCount == 1);
-
- clone->String = (GLubyte *) _mesa_strdup((char *) prog->String);
- clone->Format = prog->Format;
- clone->Instructions = _mesa_alloc_instructions(prog->NumInstructions);
- if (!clone->Instructions) {
- _mesa_reference_program(ctx, &clone, NULL);
- return NULL;
- }
- _mesa_copy_instructions(clone->Instructions, prog->Instructions,
- prog->NumInstructions);
- clone->InputsRead = prog->InputsRead;
- clone->OutputsWritten = prog->OutputsWritten;
- clone->SamplersUsed = prog->SamplersUsed;
- clone->ShadowSamplers = prog->ShadowSamplers;
- memcpy(clone->TexturesUsed, prog->TexturesUsed, sizeof(prog->TexturesUsed));
-
- if (prog->Parameters)
- clone->Parameters = _mesa_clone_parameter_list(prog->Parameters);
- memcpy(clone->LocalParams, prog->LocalParams, sizeof(clone->LocalParams));
- if (prog->Varying)
- clone->Varying = _mesa_clone_parameter_list(prog->Varying);
- if (prog->Attributes)
- clone->Attributes = _mesa_clone_parameter_list(prog->Attributes);
- memcpy(clone->LocalParams, prog->LocalParams, sizeof(clone->LocalParams));
- clone->IndirectRegisterFiles = prog->IndirectRegisterFiles;
- clone->NumInstructions = prog->NumInstructions;
- clone->NumTemporaries = prog->NumTemporaries;
- clone->NumParameters = prog->NumParameters;
- clone->NumAttributes = prog->NumAttributes;
- clone->NumAddressRegs = prog->NumAddressRegs;
- clone->NumNativeInstructions = prog->NumNativeInstructions;
- clone->NumNativeTemporaries = prog->NumNativeTemporaries;
- clone->NumNativeParameters = prog->NumNativeParameters;
- clone->NumNativeAttributes = prog->NumNativeAttributes;
- clone->NumNativeAddressRegs = prog->NumNativeAddressRegs;
- clone->NumAluInstructions = prog->NumAluInstructions;
- clone->NumTexInstructions = prog->NumTexInstructions;
- clone->NumTexIndirections = prog->NumTexIndirections;
- clone->NumNativeAluInstructions = prog->NumNativeAluInstructions;
- clone->NumNativeTexInstructions = prog->NumNativeTexInstructions;
- clone->NumNativeTexIndirections = prog->NumNativeTexIndirections;
-
- switch (prog->Target) {
- case GL_VERTEX_PROGRAM_ARB:
- {
- const struct gl_vertex_program *vp
- = (const struct gl_vertex_program *) prog;
- struct gl_vertex_program *vpc = (struct gl_vertex_program *) clone;
- vpc->IsPositionInvariant = vp->IsPositionInvariant;
- vpc->IsNVProgram = vp->IsNVProgram;
- }
- break;
- case GL_FRAGMENT_PROGRAM_ARB:
- {
- const struct gl_fragment_program *fp
- = (const struct gl_fragment_program *) prog;
- struct gl_fragment_program *fpc = (struct gl_fragment_program *) clone;
- fpc->FogOption = fp->FogOption;
- fpc->UsesKill = fp->UsesKill;
- fpc->OriginUpperLeft = fp->OriginUpperLeft;
- fpc->PixelCenterInteger = fp->PixelCenterInteger;
- }
- break;
- case MESA_GEOMETRY_PROGRAM:
- {
- const struct gl_geometry_program *gp
- = (const struct gl_geometry_program *) prog;
- struct gl_geometry_program *gpc = (struct gl_geometry_program *) clone;
- gpc->VerticesOut = gp->VerticesOut;
- gpc->InputType = gp->InputType;
- gpc->OutputType = gp->OutputType;
- }
- break;
- default:
- _mesa_problem(NULL, "Unexpected target in _mesa_clone_program");
- }
-
- return clone;
-}
-
-
-/**
- * Insert 'count' NOP instructions at 'start' in the given program.
- * Adjust branch targets accordingly.
- */
-GLboolean
-_mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count)
-{
- const GLuint origLen = prog->NumInstructions;
- const GLuint newLen = origLen + count;
- struct prog_instruction *newInst;
- GLuint i;
-
- /* adjust branches */
- for (i = 0; i < prog->NumInstructions; i++) {
- struct prog_instruction *inst = prog->Instructions + i;
- if (inst->BranchTarget > 0) {
- if ((GLuint)inst->BranchTarget >= start) {
- inst->BranchTarget += count;
- }
- }
- }
-
- /* Alloc storage for new instructions */
- newInst = _mesa_alloc_instructions(newLen);
- if (!newInst) {
- return GL_FALSE;
- }
-
- /* Copy 'start' instructions into new instruction buffer */
- _mesa_copy_instructions(newInst, prog->Instructions, start);
-
- /* init the new instructions */
- _mesa_init_instructions(newInst + start, count);
-
- /* Copy the remaining/tail instructions to new inst buffer */
- _mesa_copy_instructions(newInst + start + count,
- prog->Instructions + start,
- origLen - start);
-
- /* free old instructions */
- _mesa_free_instructions(prog->Instructions, origLen);
-
- /* install new instructions */
- prog->Instructions = newInst;
- prog->NumInstructions = newLen;
-
- return GL_TRUE;
-}
-
-/**
- * Delete 'count' instructions at 'start' in the given program.
- * Adjust branch targets accordingly.
- */
-GLboolean
-_mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count)
-{
- const GLuint origLen = prog->NumInstructions;
- const GLuint newLen = origLen - count;
- struct prog_instruction *newInst;
- GLuint i;
-
- /* adjust branches */
- for (i = 0; i < prog->NumInstructions; i++) {
- struct prog_instruction *inst = prog->Instructions + i;
- if (inst->BranchTarget > 0) {
- if (inst->BranchTarget > (GLint) start) {
- inst->BranchTarget -= count;
- }
- }
- }
-
- /* Alloc storage for new instructions */
- newInst = _mesa_alloc_instructions(newLen);
- if (!newInst) {
- return GL_FALSE;
- }
-
- /* Copy 'start' instructions into new instruction buffer */
- _mesa_copy_instructions(newInst, prog->Instructions, start);
-
- /* Copy the remaining/tail instructions to new inst buffer */
- _mesa_copy_instructions(newInst + start,
- prog->Instructions + start + count,
- newLen - start);
-
- /* free old instructions */
- _mesa_free_instructions(prog->Instructions, origLen);
-
- /* install new instructions */
- prog->Instructions = newInst;
- prog->NumInstructions = newLen;
-
- return GL_TRUE;
-}
-
-
-/**
- * Search instructions for registers that match (oldFile, oldIndex),
- * replacing them with (newFile, newIndex).
- */
-static void
-replace_registers(struct prog_instruction *inst, GLuint numInst,
- GLuint oldFile, GLuint oldIndex,
- GLuint newFile, GLuint newIndex)
-{
- GLuint i, j;
- for (i = 0; i < numInst; i++) {
- /* src regs */
- for (j = 0; j < _mesa_num_inst_src_regs(inst[i].Opcode); j++) {
- if (inst[i].SrcReg[j].File == oldFile &&
- inst[i].SrcReg[j].Index == oldIndex) {
- inst[i].SrcReg[j].File = newFile;
- inst[i].SrcReg[j].Index = newIndex;
- }
- }
- /* dst reg */
- if (inst[i].DstReg.File == oldFile && inst[i].DstReg.Index == oldIndex) {
- inst[i].DstReg.File = newFile;
- inst[i].DstReg.Index = newIndex;
- }
- }
-}
-
-
-/**
- * Search instructions for references to program parameters. When found,
- * increment the parameter index by 'offset'.
- * Used when combining programs.
- */
-static void
-adjust_param_indexes(struct prog_instruction *inst, GLuint numInst,
- GLuint offset)
-{
- GLuint i, j;
- for (i = 0; i < numInst; i++) {
- for (j = 0; j < _mesa_num_inst_src_regs(inst[i].Opcode); j++) {
- GLuint f = inst[i].SrcReg[j].File;
- if (f == PROGRAM_CONSTANT ||
- f == PROGRAM_UNIFORM ||
- f == PROGRAM_STATE_VAR) {
- inst[i].SrcReg[j].Index += offset;
- }
- }
- }
-}
-
-
-/**
- * Combine two programs into one. Fix instructions so the outputs of
- * the first program go to the inputs of the second program.
- */
-struct gl_program *
-_mesa_combine_programs(struct gl_context *ctx,
- const struct gl_program *progA,
- const struct gl_program *progB)
-{
- struct prog_instruction *newInst;
- struct gl_program *newProg;
- const GLuint lenA = progA->NumInstructions - 1; /* omit END instr */
- const GLuint lenB = progB->NumInstructions;
- const GLuint numParamsA = _mesa_num_parameters(progA->Parameters);
- const GLuint newLength = lenA + lenB;
- GLboolean usedTemps[MAX_PROGRAM_TEMPS];
- GLuint firstTemp = 0;
- GLbitfield inputsB;
- GLuint i;
-
- ASSERT(progA->Target == progB->Target);
-
- newInst = _mesa_alloc_instructions(newLength);
- if (!newInst)
- return GL_FALSE;
-
- _mesa_copy_instructions(newInst, progA->Instructions, lenA);
- _mesa_copy_instructions(newInst + lenA, progB->Instructions, lenB);
-
- /* adjust branch / instruction addresses for B's instructions */
- for (i = 0; i < lenB; i++) {
- newInst[lenA + i].BranchTarget += lenA;
- }
-
- newProg = ctx->Driver.NewProgram(ctx, progA->Target, 0);
- newProg->Instructions = newInst;
- newProg->NumInstructions = newLength;
-
- /* find used temp regs (we may need new temps below) */
- _mesa_find_used_registers(newProg, PROGRAM_TEMPORARY,
- usedTemps, MAX_PROGRAM_TEMPS);
-
- if (newProg->Target == GL_FRAGMENT_PROGRAM_ARB) {
- struct gl_fragment_program *fprogA, *fprogB, *newFprog;
- GLbitfield progB_inputsRead = progB->InputsRead;
- GLint progB_colorFile, progB_colorIndex;
-
- fprogA = (struct gl_fragment_program *) progA;
- fprogB = (struct gl_fragment_program *) progB;
- newFprog = (struct gl_fragment_program *) newProg;
-
- newFprog->UsesKill = fprogA->UsesKill || fprogB->UsesKill;
-
- /* We'll do a search and replace for instances
- * of progB_colorFile/progB_colorIndex below...
- */
- progB_colorFile = PROGRAM_INPUT;
- progB_colorIndex = FRAG_ATTRIB_COL0;
-
- /*
- * The fragment program may get color from a state var rather than
- * a fragment input (vertex output) if it's constant.
- * See the texenvprogram.c code.
- * So, search the program's parameter list now to see if the program
- * gets color from a state var instead of a conventional fragment
- * input register.
- */
- for (i = 0; i < progB->Parameters->NumParameters; i++) {
- struct gl_program_parameter *p = &progB->Parameters->Parameters[i];
- if (p->Type == PROGRAM_STATE_VAR &&
- p->StateIndexes[0] == STATE_INTERNAL &&
- p->StateIndexes[1] == STATE_CURRENT_ATTRIB &&
- (int) p->StateIndexes[2] == (int) VERT_ATTRIB_COLOR0) {
- progB_inputsRead |= FRAG_BIT_COL0;
- progB_colorFile = PROGRAM_STATE_VAR;
- progB_colorIndex = i;
- break;
- }
- }
-
- /* Connect color outputs of fprogA to color inputs of fprogB, via a
- * new temporary register.
- */
- if ((progA->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) &&
- (progB_inputsRead & FRAG_BIT_COL0)) {
- GLint tempReg = _mesa_find_free_register(usedTemps, MAX_PROGRAM_TEMPS,
- firstTemp);
- if (tempReg < 0) {
- _mesa_problem(ctx, "No free temp regs found in "
- "_mesa_combine_programs(), using 31");
- tempReg = 31;
- }
- firstTemp = tempReg + 1;
-
- /* replace writes to result.color[0] with tempReg */
- replace_registers(newInst, lenA,
- PROGRAM_OUTPUT, FRAG_RESULT_COLOR,
- PROGRAM_TEMPORARY, tempReg);
- /* replace reads from the input color with tempReg */
- replace_registers(newInst + lenA, lenB,
- progB_colorFile, progB_colorIndex, /* search for */
- PROGRAM_TEMPORARY, tempReg /* replace with */ );
- }
-
- /* compute combined program's InputsRead */
- inputsB = progB_inputsRead;
- if (progA->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) {
- inputsB &= ~(1 << FRAG_ATTRIB_COL0);
- }
- newProg->InputsRead = progA->InputsRead | inputsB;
- newProg->OutputsWritten = progB->OutputsWritten;
- newProg->SamplersUsed = progA->SamplersUsed | progB->SamplersUsed;
- }
- else {
- /* vertex program */
- assert(0); /* XXX todo */
- }
-
- /*
- * Merge parameters (uniforms, constants, etc)
- */
- newProg->Parameters = _mesa_combine_parameter_lists(progA->Parameters,
- progB->Parameters);
-
- adjust_param_indexes(newInst + lenA, lenB, numParamsA);
-
-
- return newProg;
-}
-
-
-/**
- * Populate the 'used' array with flags indicating which registers (TEMPs,
- * INPUTs, OUTPUTs, etc, are used by the given program.
- * \param file type of register to scan for
- * \param used returns true/false flags for in use / free
- * \param usedSize size of the 'used' array
- */
-void
-_mesa_find_used_registers(const struct gl_program *prog,
- gl_register_file file,
- GLboolean used[], GLuint usedSize)
-{
- GLuint i, j;
-
- memset(used, 0, usedSize);
-
- for (i = 0; i < prog->NumInstructions; i++) {
- const struct prog_instruction *inst = prog->Instructions + i;
- const GLuint n = _mesa_num_inst_src_regs(inst->Opcode);
-
- if (inst->DstReg.File == file) {
- ASSERT(inst->DstReg.Index < usedSize);
- if(inst->DstReg.Index < usedSize)
- used[inst->DstReg.Index] = GL_TRUE;
- }
-
- for (j = 0; j < n; j++) {
- if (inst->SrcReg[j].File == file) {
- ASSERT(inst->SrcReg[j].Index < usedSize);
- if(inst->SrcReg[j].Index < usedSize)
- used[inst->SrcReg[j].Index] = GL_TRUE;
- }
- }
- }
-}
-
-
-/**
- * Scan the given 'used' register flag array for the first entry
- * that's >= firstReg.
- * \param used vector of flags indicating registers in use (as returned
- * by _mesa_find_used_registers())
- * \param usedSize size of the 'used' array
- * \param firstReg first register to start searching at
- * \return index of unused register, or -1 if none.
- */
-GLint
-_mesa_find_free_register(const GLboolean used[],
- GLuint usedSize, GLuint firstReg)
-{
- GLuint i;
-
- assert(firstReg < usedSize);
-
- for (i = firstReg; i < usedSize; i++)
- if (!used[i])
- return i;
-
- return -1;
-}
-
-
-
-/**
- * Check if the given register index is valid (doesn't exceed implementation-
- * dependent limits).
- * \return GL_TRUE if OK, GL_FALSE if bad index
- */
-GLboolean
-_mesa_valid_register_index(const struct gl_context *ctx,
- gl_shader_type shaderType,
- gl_register_file file, GLint index)
-{
- const struct gl_program_constants *c;
-
- switch (shaderType) {
- case MESA_SHADER_VERTEX:
- c = &ctx->Const.VertexProgram;
- break;
- case MESA_SHADER_FRAGMENT:
- c = &ctx->Const.FragmentProgram;
- break;
- case MESA_SHADER_GEOMETRY:
- c = &ctx->Const.GeometryProgram;
- break;
- default:
- _mesa_problem(ctx,
- "unexpected shader type in _mesa_valid_register_index()");
- return GL_FALSE;
- }
-
- switch (file) {
- case PROGRAM_UNDEFINED:
- return GL_TRUE; /* XXX or maybe false? */
-
- case PROGRAM_TEMPORARY:
- return index >= 0 && index < c->MaxTemps;
-
- case PROGRAM_ENV_PARAM:
- return index >= 0 && index < c->MaxEnvParams;
-
- case PROGRAM_LOCAL_PARAM:
- return index >= 0 && index < c->MaxLocalParams;
-
- case PROGRAM_NAMED_PARAM:
- return index >= 0 && index < c->MaxParameters;
-
- case PROGRAM_UNIFORM:
- case PROGRAM_STATE_VAR:
- /* aka constant buffer */
- return index >= 0 && index < c->MaxUniformComponents / 4;
-
- case PROGRAM_CONSTANT:
- /* constant buffer w/ possible relative negative addressing */
- return (index > (int) c->MaxUniformComponents / -4 &&
- index < c->MaxUniformComponents / 4);
-
- case PROGRAM_INPUT:
- if (index < 0)
- return GL_FALSE;
-
- switch (shaderType) {
- case MESA_SHADER_VERTEX:
- return index < VERT_ATTRIB_GENERIC0 + c->MaxAttribs;
- case MESA_SHADER_FRAGMENT:
- return index < FRAG_ATTRIB_VAR0 + ctx->Const.MaxVarying;
- case MESA_SHADER_GEOMETRY:
- return index < GEOM_ATTRIB_VAR0 + ctx->Const.MaxVarying;
- default:
- return GL_FALSE;
- }
-
- case PROGRAM_OUTPUT:
- if (index < 0)
- return GL_FALSE;
-
- switch (shaderType) {
- case MESA_SHADER_VERTEX:
- return index < VERT_RESULT_VAR0 + ctx->Const.MaxVarying;
- case MESA_SHADER_FRAGMENT:
- return index < FRAG_RESULT_DATA0 + ctx->Const.MaxDrawBuffers;
- case MESA_SHADER_GEOMETRY:
- return index < GEOM_RESULT_VAR0 + ctx->Const.MaxVarying;
- default:
- return GL_FALSE;
- }
-
- case PROGRAM_ADDRESS:
- return index >= 0 && index < c->MaxAddressRegs;
-
- default:
- _mesa_problem(ctx,
- "unexpected register file in _mesa_valid_register_index()");
- return GL_FALSE;
- }
-}
-
-
-
-/**
- * "Post-process" a GPU program. This is intended to be used for debugging.
- * Example actions include no-op'ing instructions or changing instruction
- * behaviour.
- */
-void
-_mesa_postprocess_program(struct gl_context *ctx, struct gl_program *prog)
-{
- static const GLfloat white[4] = { 0.5, 0.5, 0.5, 0.5 };
- GLuint i;
- GLuint whiteSwizzle;
- GLint whiteIndex = _mesa_add_unnamed_constant(prog->Parameters,
- white, 4, &whiteSwizzle);
-
- (void) whiteIndex;
-
- for (i = 0; i < prog->NumInstructions; i++) {
- struct prog_instruction *inst = prog->Instructions + i;
- const GLuint n = _mesa_num_inst_src_regs(inst->Opcode);
-
- (void) n;
-
- if (_mesa_is_tex_instruction(inst->Opcode)) {
-#if 0
- /* replace TEX/TXP/TXB with MOV */
- inst->Opcode = OPCODE_MOV;
- inst->DstReg.WriteMask = WRITEMASK_XYZW;
- inst->SrcReg[0].Swizzle = SWIZZLE_XYZW;
- inst->SrcReg[0].Negate = NEGATE_NONE;
-#endif
-
-#if 0
- /* disable shadow texture mode */
- inst->TexShadow = 0;
-#endif
- }
-
- if (inst->Opcode == OPCODE_TXP) {
-#if 0
- inst->Opcode = OPCODE_MOV;
- inst->DstReg.WriteMask = WRITEMASK_XYZW;
- inst->SrcReg[0].File = PROGRAM_CONSTANT;
- inst->SrcReg[0].Index = whiteIndex;
- inst->SrcReg[0].Swizzle = SWIZZLE_XYZW;
- inst->SrcReg[0].Negate = NEGATE_NONE;
-#endif
-#if 0
- inst->TexShadow = 0;
-#endif
-#if 0
- inst->Opcode = OPCODE_TEX;
- inst->TexShadow = 0;
-#endif
- }
-
- }
-}
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.3
+ *
+ * Copyright (C) 1999-2007 Brian Paul 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 program.c
+ * Vertex and fragment program support functions.
+ * \author Brian Paul
+ */
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/hash.h"
+#include "main/mfeatures.h"
+#include "program.h"
+#include "prog_cache.h"
+#include "prog_parameter.h"
+#include "prog_instruction.h"
+
+
+/**
+ * A pointer to this dummy program is put into the hash table when
+ * glGenPrograms is called.
+ */
+struct gl_program _mesa_DummyProgram;
+
+
+/**
+ * Init context's vertex/fragment program state
+ */
+void
+_mesa_init_program(struct gl_context *ctx)
+{
+ GLuint i;
+
+ /*
+ * If this assertion fails, we need to increase the field
+ * size for register indexes (see INST_INDEX_BITS).
+ */
+ ASSERT(ctx->Const.VertexProgram.MaxUniformComponents / 4
+ <= (1 << INST_INDEX_BITS));
+ ASSERT(ctx->Const.FragmentProgram.MaxUniformComponents / 4
+ <= (1 << INST_INDEX_BITS));
+
+ ASSERT(ctx->Const.VertexProgram.MaxTemps <= (1 << INST_INDEX_BITS));
+ ASSERT(ctx->Const.VertexProgram.MaxLocalParams <= (1 << INST_INDEX_BITS));
+ ASSERT(ctx->Const.FragmentProgram.MaxTemps <= (1 << INST_INDEX_BITS));
+ ASSERT(ctx->Const.FragmentProgram.MaxLocalParams <= (1 << INST_INDEX_BITS));
+
+ ASSERT(ctx->Const.VertexProgram.MaxUniformComponents <= 4 * MAX_UNIFORMS);
+ ASSERT(ctx->Const.FragmentProgram.MaxUniformComponents <= 4 * MAX_UNIFORMS);
+
+ ASSERT(ctx->Const.VertexProgram.MaxAddressOffset <= (1 << INST_INDEX_BITS));
+ ASSERT(ctx->Const.FragmentProgram.MaxAddressOffset <= (1 << INST_INDEX_BITS));
+
+ /* If this fails, increase prog_instruction::TexSrcUnit size */
+ ASSERT(MAX_TEXTURE_UNITS < (1 << 5));
+
+ /* If this fails, increase prog_instruction::TexSrcTarget size */
+ ASSERT(NUM_TEXTURE_TARGETS < (1 << 3));
+
+ ctx->Program.ErrorPos = -1;
+ ctx->Program.ErrorString = _mesa_strdup("");
+
+#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
+ ctx->VertexProgram.Enabled = GL_FALSE;
+#if FEATURE_es2_glsl
+ ctx->VertexProgram.PointSizeEnabled =
+ (ctx->API == API_OPENGLES2) ? GL_TRUE : GL_FALSE;
+#else
+ ctx->VertexProgram.PointSizeEnabled = GL_FALSE;
+#endif
+ ctx->VertexProgram.TwoSideEnabled = GL_FALSE;
+ _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
+ ctx->Shared->DefaultVertexProgram);
+ assert(ctx->VertexProgram.Current);
+ for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) {
+ ctx->VertexProgram.TrackMatrix[i] = GL_NONE;
+ ctx->VertexProgram.TrackMatrixTransform[i] = GL_IDENTITY_NV;
+ }
+ ctx->VertexProgram.Cache = _mesa_new_program_cache();
+#endif
+
+#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
+ ctx->FragmentProgram.Enabled = GL_FALSE;
+ _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
+ ctx->Shared->DefaultFragmentProgram);
+ assert(ctx->FragmentProgram.Current);
+ ctx->FragmentProgram.Cache = _mesa_new_program_cache();
+#endif
+
+#if FEATURE_ARB_geometry_shader4
+ ctx->GeometryProgram.Enabled = GL_FALSE;
+ /* right now by default we don't have a geometry program */
+ _mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current,
+ NULL);
+ ctx->GeometryProgram.Cache = _mesa_new_program_cache();
+#endif
+
+ /* XXX probably move this stuff */
+#if FEATURE_ATI_fragment_shader
+ ctx->ATIFragmentShader.Enabled = GL_FALSE;
+ ctx->ATIFragmentShader.Current = ctx->Shared->DefaultFragmentShader;
+ assert(ctx->ATIFragmentShader.Current);
+ ctx->ATIFragmentShader.Current->RefCount++;
+#endif
+}
+
+
+/**
+ * Free a context's vertex/fragment program state
+ */
+void
+_mesa_free_program_data(struct gl_context *ctx)
+{
+#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
+ _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, NULL);
+ _mesa_delete_program_cache(ctx, ctx->VertexProgram.Cache);
+#endif
+#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
+ _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current, NULL);
+ _mesa_delete_program_cache(ctx, ctx->FragmentProgram.Cache);
+#endif
+#if FEATURE_ARB_geometry_shader4
+ _mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current, NULL);
+ _mesa_delete_program_cache(ctx, ctx->GeometryProgram.Cache);
+#endif
+ /* XXX probably move this stuff */
+#if FEATURE_ATI_fragment_shader
+ if (ctx->ATIFragmentShader.Current) {
+ ctx->ATIFragmentShader.Current->RefCount--;
+ if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
+ free(ctx->ATIFragmentShader.Current);
+ }
+ }
+#endif
+ free((void *) ctx->Program.ErrorString);
+}
+
+
+/**
+ * Update the default program objects in the given context to reference those
+ * specified in the shared state and release those referencing the old
+ * shared state.
+ */
+void
+_mesa_update_default_objects_program(struct gl_context *ctx)
+{
+#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
+ _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
+ (struct gl_vertex_program *)
+ ctx->Shared->DefaultVertexProgram);
+ assert(ctx->VertexProgram.Current);
+#endif
+
+#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
+ _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
+ (struct gl_fragment_program *)
+ ctx->Shared->DefaultFragmentProgram);
+ assert(ctx->FragmentProgram.Current);
+#endif
+
+#if FEATURE_ARB_geometry_shader4
+ _mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current,
+ (struct gl_geometry_program *)
+ ctx->Shared->DefaultGeometryProgram);
+#endif
+
+ /* XXX probably move this stuff */
+#if FEATURE_ATI_fragment_shader
+ if (ctx->ATIFragmentShader.Current) {
+ ctx->ATIFragmentShader.Current->RefCount--;
+ if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
+ free(ctx->ATIFragmentShader.Current);
+ }
+ }
+ ctx->ATIFragmentShader.Current = (struct ati_fragment_shader *) ctx->Shared->DefaultFragmentShader;
+ assert(ctx->ATIFragmentShader.Current);
+ ctx->ATIFragmentShader.Current->RefCount++;
+#endif
+}
+
+
+/**
+ * Set the vertex/fragment program error state (position and error string).
+ * This is generally called from within the parsers.
+ */
+void
+_mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string)
+{
+ ctx->Program.ErrorPos = pos;
+ free((void *) ctx->Program.ErrorString);
+ if (!string)
+ string = "";
+ ctx->Program.ErrorString = _mesa_strdup(string);
+}
+
+
+/**
+ * Find the line number and column for 'pos' within 'string'.
+ * Return a copy of the line which contains 'pos'. Free the line with
+ * free().
+ * \param string the program string
+ * \param pos the position within the string
+ * \param line returns the line number corresponding to 'pos'.
+ * \param col returns the column number corresponding to 'pos'.
+ * \return copy of the line containing 'pos'.
+ */
+const GLubyte *
+_mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
+ GLint *line, GLint *col)
+{
+ const GLubyte *lineStart = string;
+ const GLubyte *p = string;
+ GLubyte *s;
+ int len;
+
+ *line = 1;
+
+ while (p != pos) {
+ if (*p == (GLubyte) '\n') {
+ (*line)++;
+ lineStart = p + 1;
+ }
+ p++;
+ }
+
+ *col = (pos - lineStart) + 1;
+
+ /* return copy of this line */
+ while (*p != 0 && *p != '\n')
+ p++;
+ len = p - lineStart;
+ s = (GLubyte *) malloc(len + 1);
+ memcpy(s, lineStart, len);
+ s[len] = 0;
+
+ return s;
+}
+
+
+/**
+ * Initialize a new vertex/fragment program object.
+ */
+static struct gl_program *
+_mesa_init_program_struct( struct gl_context *ctx, struct gl_program *prog,
+ GLenum target, GLuint id)
+{
+ (void) ctx;
+ if (prog) {
+ GLuint i;
+ memset(prog, 0, sizeof(*prog));
+ prog->Id = id;
+ prog->Target = target;
+ prog->Resident = GL_TRUE;
+ prog->RefCount = 1;
+ prog->Format = GL_PROGRAM_FORMAT_ASCII_ARB;
+
+ /* default mapping from samplers to texture units */
+ for (i = 0; i < MAX_SAMPLERS; i++)
+ prog->SamplerUnits[i] = i;
+ }
+
+ return prog;
+}
+
+
+/**
+ * Initialize a new fragment program object.
+ */
+struct gl_program *
+_mesa_init_fragment_program( struct gl_context *ctx, struct gl_fragment_program *prog,
+ GLenum target, GLuint id)
+{
+ if (prog)
+ return _mesa_init_program_struct( ctx, &prog->Base, target, id );
+ else
+ return NULL;
+}
+
+
+/**
+ * Initialize a new vertex program object.
+ */
+struct gl_program *
+_mesa_init_vertex_program( struct gl_context *ctx, struct gl_vertex_program *prog,
+ GLenum target, GLuint id)
+{
+ if (prog)
+ return _mesa_init_program_struct( ctx, &prog->Base, target, id );
+ else
+ return NULL;
+}
+
+
+/**
+ * Initialize a new geometry program object.
+ */
+struct gl_program *
+_mesa_init_geometry_program( struct gl_context *ctx, struct gl_geometry_program *prog,
+ GLenum target, GLuint id)
+{
+ if (prog)
+ return _mesa_init_program_struct( ctx, &prog->Base, target, id );
+ else
+ return NULL;
+}
+
+
+/**
+ * Allocate and initialize a new fragment/vertex program object but
+ * don't put it into the program hash table. Called via
+ * ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
+ * device driver function to implement OO deriviation with additional
+ * types not understood by this function.
+ *
+ * \param ctx context
+ * \param id program id/number
+ * \param target program target/type
+ * \return pointer to new program object
+ */
+struct gl_program *
+_mesa_new_program(struct gl_context *ctx, GLenum target, GLuint id)
+{
+ struct gl_program *prog;
+ switch (target) {
+ case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
+ case GL_VERTEX_STATE_PROGRAM_NV:
+ prog = _mesa_init_vertex_program(ctx, CALLOC_STRUCT(gl_vertex_program),
+ target, id );
+ break;
+ case GL_FRAGMENT_PROGRAM_NV:
+ case GL_FRAGMENT_PROGRAM_ARB:
+ prog =_mesa_init_fragment_program(ctx,
+ CALLOC_STRUCT(gl_fragment_program),
+ target, id );
+ break;
+ case MESA_GEOMETRY_PROGRAM:
+ prog = _mesa_init_geometry_program(ctx,
+ CALLOC_STRUCT(gl_geometry_program),
+ target, id);
+ break;
+ default:
+ _mesa_problem(ctx, "bad target in _mesa_new_program");
+ prog = NULL;
+ }
+ return prog;
+}
+
+
+/**
+ * Delete a program and remove it from the hash table, ignoring the
+ * reference count.
+ * Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
+ * by a device driver function.
+ */
+void
+_mesa_delete_program(struct gl_context *ctx, struct gl_program *prog)
+{
+ (void) ctx;
+ ASSERT(prog);
+ ASSERT(prog->RefCount==0);
+
+ if (prog == &_mesa_DummyProgram)
+ return;
+
+ if (prog->String)
+ free(prog->String);
+
+ _mesa_free_instructions(prog->Instructions, prog->NumInstructions);
+
+ if (prog->Parameters) {
+ _mesa_free_parameter_list(prog->Parameters);
+ }
+ if (prog->Varying) {
+ _mesa_free_parameter_list(prog->Varying);
+ }
+ if (prog->Attributes) {
+ _mesa_free_parameter_list(prog->Attributes);
+ }
+
+ free(prog);
+}
+
+
+/**
+ * Return the gl_program object for a given ID.
+ * Basically just a wrapper for _mesa_HashLookup() to avoid a lot of
+ * casts elsewhere.
+ */
+struct gl_program *
+_mesa_lookup_program(struct gl_context *ctx, GLuint id)
+{
+ if (id)
+ return (struct gl_program *) _mesa_HashLookup(ctx->Shared->Programs, id);
+ else
+ return NULL;
+}
+
+
+/**
+ * Reference counting for vertex/fragment programs
+ */
+void
+_mesa_reference_program(struct gl_context *ctx,
+ struct gl_program **ptr,
+ struct gl_program *prog)
+{
+ assert(ptr);
+ if (*ptr && prog) {
+ /* sanity check */
+ if ((*ptr)->Target == GL_VERTEX_PROGRAM_ARB)
+ ASSERT(prog->Target == GL_VERTEX_PROGRAM_ARB);
+ else if ((*ptr)->Target == GL_FRAGMENT_PROGRAM_ARB)
+ ASSERT(prog->Target == GL_FRAGMENT_PROGRAM_ARB ||
+ prog->Target == GL_FRAGMENT_PROGRAM_NV);
+ else if ((*ptr)->Target == MESA_GEOMETRY_PROGRAM)
+ ASSERT(prog->Target == MESA_GEOMETRY_PROGRAM);
+ }
+ if (*ptr == prog) {
+ return; /* no change */
+ }
+ if (*ptr) {
+ GLboolean deleteFlag;
+
+ /*_glthread_LOCK_MUTEX((*ptr)->Mutex);*/
+#if 0
+ printf("Program %p ID=%u Target=%s Refcount-- to %d\n",
+ *ptr, (*ptr)->Id,
+ ((*ptr)->Target == GL_VERTEX_PROGRAM_ARB ? "VP" :
+ ((*ptr)->Target == MESA_GEOMETRY_PROGRAM ? "GP" : "FP")),
+ (*ptr)->RefCount - 1);
+#endif
+ ASSERT((*ptr)->RefCount > 0);
+ (*ptr)->RefCount--;
+
+ deleteFlag = ((*ptr)->RefCount == 0);
+ /*_glthread_UNLOCK_MUTEX((*ptr)->Mutex);*/
+
+ if (deleteFlag) {
+ ASSERT(ctx);
+ ctx->Driver.DeleteProgram(ctx, *ptr);
+ }
+
+ *ptr = NULL;
+ }
+
+ assert(!*ptr);
+ if (prog) {
+ /*_glthread_LOCK_MUTEX(prog->Mutex);*/
+ prog->RefCount++;
+#if 0
+ printf("Program %p ID=%u Target=%s Refcount++ to %d\n",
+ prog, prog->Id,
+ (prog->Target == GL_VERTEX_PROGRAM_ARB ? "VP" :
+ (prog->Target == MESA_GEOMETRY_PROGRAM ? "GP" : "FP")),
+ prog->RefCount);
+#endif
+ /*_glthread_UNLOCK_MUTEX(prog->Mutex);*/
+ }
+
+ *ptr = prog;
+}
+
+
+/**
+ * Return a copy of a program.
+ * XXX Problem here if the program object is actually OO-derivation
+ * made by a device driver.
+ */
+struct gl_program *
+_mesa_clone_program(struct gl_context *ctx, const struct gl_program *prog)
+{
+ struct gl_program *clone;
+
+ clone = ctx->Driver.NewProgram(ctx, prog->Target, prog->Id);
+ if (!clone)
+ return NULL;
+
+ assert(clone->Target == prog->Target);
+ assert(clone->RefCount == 1);
+
+ clone->String = (GLubyte *) _mesa_strdup((char *) prog->String);
+ clone->Format = prog->Format;
+ clone->Instructions = _mesa_alloc_instructions(prog->NumInstructions);
+ if (!clone->Instructions) {
+ _mesa_reference_program(ctx, &clone, NULL);
+ return NULL;
+ }
+ _mesa_copy_instructions(clone->Instructions, prog->Instructions,
+ prog->NumInstructions);
+ clone->InputsRead = prog->InputsRead;
+ clone->OutputsWritten = prog->OutputsWritten;
+ clone->SamplersUsed = prog->SamplersUsed;
+ clone->ShadowSamplers = prog->ShadowSamplers;
+ memcpy(clone->TexturesUsed, prog->TexturesUsed, sizeof(prog->TexturesUsed));
+
+ if (prog->Parameters)
+ clone->Parameters = _mesa_clone_parameter_list(prog->Parameters);
+ memcpy(clone->LocalParams, prog->LocalParams, sizeof(clone->LocalParams));
+ if (prog->Varying)
+ clone->Varying = _mesa_clone_parameter_list(prog->Varying);
+ if (prog->Attributes)
+ clone->Attributes = _mesa_clone_parameter_list(prog->Attributes);
+ memcpy(clone->LocalParams, prog->LocalParams, sizeof(clone->LocalParams));
+ clone->IndirectRegisterFiles = prog->IndirectRegisterFiles;
+ clone->NumInstructions = prog->NumInstructions;
+ clone->NumTemporaries = prog->NumTemporaries;
+ clone->NumParameters = prog->NumParameters;
+ clone->NumAttributes = prog->NumAttributes;
+ clone->NumAddressRegs = prog->NumAddressRegs;
+ clone->NumNativeInstructions = prog->NumNativeInstructions;
+ clone->NumNativeTemporaries = prog->NumNativeTemporaries;
+ clone->NumNativeParameters = prog->NumNativeParameters;
+ clone->NumNativeAttributes = prog->NumNativeAttributes;
+ clone->NumNativeAddressRegs = prog->NumNativeAddressRegs;
+ clone->NumAluInstructions = prog->NumAluInstructions;
+ clone->NumTexInstructions = prog->NumTexInstructions;
+ clone->NumTexIndirections = prog->NumTexIndirections;
+ clone->NumNativeAluInstructions = prog->NumNativeAluInstructions;
+ clone->NumNativeTexInstructions = prog->NumNativeTexInstructions;
+ clone->NumNativeTexIndirections = prog->NumNativeTexIndirections;
+
+ switch (prog->Target) {
+ case GL_VERTEX_PROGRAM_ARB:
+ {
+ const struct gl_vertex_program *vp
+ = (const struct gl_vertex_program *) prog;
+ struct gl_vertex_program *vpc = (struct gl_vertex_program *) clone;
+ vpc->IsPositionInvariant = vp->IsPositionInvariant;
+ vpc->IsNVProgram = vp->IsNVProgram;
+ }
+ break;
+ case GL_FRAGMENT_PROGRAM_ARB:
+ {
+ const struct gl_fragment_program *fp
+ = (const struct gl_fragment_program *) prog;
+ struct gl_fragment_program *fpc = (struct gl_fragment_program *) clone;
+ fpc->FogOption = fp->FogOption;
+ fpc->UsesKill = fp->UsesKill;
+ fpc->OriginUpperLeft = fp->OriginUpperLeft;
+ fpc->PixelCenterInteger = fp->PixelCenterInteger;
+ }
+ break;
+ case MESA_GEOMETRY_PROGRAM:
+ {
+ const struct gl_geometry_program *gp
+ = (const struct gl_geometry_program *) prog;
+ struct gl_geometry_program *gpc = (struct gl_geometry_program *) clone;
+ gpc->VerticesOut = gp->VerticesOut;
+ gpc->InputType = gp->InputType;
+ gpc->OutputType = gp->OutputType;
+ }
+ break;
+ default:
+ _mesa_problem(NULL, "Unexpected target in _mesa_clone_program");
+ }
+
+ return clone;
+}
+
+
+/**
+ * Insert 'count' NOP instructions at 'start' in the given program.
+ * Adjust branch targets accordingly.
+ */
+GLboolean
+_mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count)
+{
+ const GLuint origLen = prog->NumInstructions;
+ const GLuint newLen = origLen + count;
+ struct prog_instruction *newInst;
+ GLuint i;
+
+ /* adjust branches */
+ for (i = 0; i < prog->NumInstructions; i++) {
+ struct prog_instruction *inst = prog->Instructions + i;
+ if (inst->BranchTarget > 0) {
+ if ((GLuint)inst->BranchTarget >= start) {
+ inst->BranchTarget += count;
+ }
+ }
+ }
+
+ /* Alloc storage for new instructions */
+ newInst = _mesa_alloc_instructions(newLen);
+ if (!newInst) {
+ return GL_FALSE;
+ }
+
+ /* Copy 'start' instructions into new instruction buffer */
+ _mesa_copy_instructions(newInst, prog->Instructions, start);
+
+ /* init the new instructions */
+ _mesa_init_instructions(newInst + start, count);
+
+ /* Copy the remaining/tail instructions to new inst buffer */
+ _mesa_copy_instructions(newInst + start + count,
+ prog->Instructions + start,
+ origLen - start);
+
+ /* free old instructions */
+ _mesa_free_instructions(prog->Instructions, origLen);
+
+ /* install new instructions */
+ prog->Instructions = newInst;
+ prog->NumInstructions = newLen;
+
+ return GL_TRUE;
+}
+
+/**
+ * Delete 'count' instructions at 'start' in the given program.
+ * Adjust branch targets accordingly.
+ */
+GLboolean
+_mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count)
+{
+ const GLuint origLen = prog->NumInstructions;
+ const GLuint newLen = origLen - count;
+ struct prog_instruction *newInst;
+ GLuint i;
+
+ /* adjust branches */
+ for (i = 0; i < prog->NumInstructions; i++) {
+ struct prog_instruction *inst = prog->Instructions + i;
+ if (inst->BranchTarget > 0) {
+ if (inst->BranchTarget > (GLint) start) {
+ inst->BranchTarget -= count;
+ }
+ }
+ }
+
+ /* Alloc storage for new instructions */
+ newInst = _mesa_alloc_instructions(newLen);
+ if (!newInst) {
+ return GL_FALSE;
+ }
+
+ /* Copy 'start' instructions into new instruction buffer */
+ _mesa_copy_instructions(newInst, prog->Instructions, start);
+
+ /* Copy the remaining/tail instructions to new inst buffer */
+ _mesa_copy_instructions(newInst + start,
+ prog->Instructions + start + count,
+ newLen - start);
+
+ /* free old instructions */
+ _mesa_free_instructions(prog->Instructions, origLen);
+
+ /* install new instructions */
+ prog->Instructions = newInst;
+ prog->NumInstructions = newLen;
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Search instructions for registers that match (oldFile, oldIndex),
+ * replacing them with (newFile, newIndex).
+ */
+static void
+replace_registers(struct prog_instruction *inst, GLuint numInst,
+ GLuint oldFile, GLuint oldIndex,
+ GLuint newFile, GLuint newIndex)
+{
+ GLuint i, j;
+ for (i = 0; i < numInst; i++) {
+ /* src regs */
+ for (j = 0; j < _mesa_num_inst_src_regs(inst[i].Opcode); j++) {
+ if (inst[i].SrcReg[j].File == oldFile &&
+ inst[i].SrcReg[j].Index == oldIndex) {
+ inst[i].SrcReg[j].File = newFile;
+ inst[i].SrcReg[j].Index = newIndex;
+ }
+ }
+ /* dst reg */
+ if (inst[i].DstReg.File == oldFile && inst[i].DstReg.Index == oldIndex) {
+ inst[i].DstReg.File = newFile;
+ inst[i].DstReg.Index = newIndex;
+ }
+ }
+}
+
+
+/**
+ * Search instructions for references to program parameters. When found,
+ * increment the parameter index by 'offset'.
+ * Used when combining programs.
+ */
+static void
+adjust_param_indexes(struct prog_instruction *inst, GLuint numInst,
+ GLuint offset)
+{
+ GLuint i, j;
+ for (i = 0; i < numInst; i++) {
+ for (j = 0; j < _mesa_num_inst_src_regs(inst[i].Opcode); j++) {
+ GLuint f = inst[i].SrcReg[j].File;
+ if (f == PROGRAM_CONSTANT ||
+ f == PROGRAM_UNIFORM ||
+ f == PROGRAM_STATE_VAR) {
+ inst[i].SrcReg[j].Index += offset;
+ }
+ }
+ }
+}
+
+
+/**
+ * Combine two programs into one. Fix instructions so the outputs of
+ * the first program go to the inputs of the second program.
+ */
+struct gl_program *
+_mesa_combine_programs(struct gl_context *ctx,
+ const struct gl_program *progA,
+ const struct gl_program *progB)
+{
+ struct prog_instruction *newInst;
+ struct gl_program *newProg;
+ const GLuint lenA = progA->NumInstructions - 1; /* omit END instr */
+ const GLuint lenB = progB->NumInstructions;
+ const GLuint numParamsA = _mesa_num_parameters(progA->Parameters);
+ const GLuint newLength = lenA + lenB;
+ GLboolean usedTemps[MAX_PROGRAM_TEMPS];
+ GLuint firstTemp = 0;
+ GLbitfield inputsB;
+ GLuint i;
+
+ ASSERT(progA->Target == progB->Target);
+
+ newInst = _mesa_alloc_instructions(newLength);
+ if (!newInst)
+ return GL_FALSE;
+
+ _mesa_copy_instructions(newInst, progA->Instructions, lenA);
+ _mesa_copy_instructions(newInst + lenA, progB->Instructions, lenB);
+
+ /* adjust branch / instruction addresses for B's instructions */
+ for (i = 0; i < lenB; i++) {
+ newInst[lenA + i].BranchTarget += lenA;
+ }
+
+ newProg = ctx->Driver.NewProgram(ctx, progA->Target, 0);
+ newProg->Instructions = newInst;
+ newProg->NumInstructions = newLength;
+
+ /* find used temp regs (we may need new temps below) */
+ _mesa_find_used_registers(newProg, PROGRAM_TEMPORARY,
+ usedTemps, MAX_PROGRAM_TEMPS);
+
+ if (newProg->Target == GL_FRAGMENT_PROGRAM_ARB) {
+ struct gl_fragment_program *fprogA, *fprogB, *newFprog;
+ GLbitfield progB_inputsRead = progB->InputsRead;
+ GLint progB_colorFile, progB_colorIndex;
+
+ fprogA = (struct gl_fragment_program *) progA;
+ fprogB = (struct gl_fragment_program *) progB;
+ newFprog = (struct gl_fragment_program *) newProg;
+
+ newFprog->UsesKill = fprogA->UsesKill || fprogB->UsesKill;
+
+ /* We'll do a search and replace for instances
+ * of progB_colorFile/progB_colorIndex below...
+ */
+ progB_colorFile = PROGRAM_INPUT;
+ progB_colorIndex = FRAG_ATTRIB_COL0;
+
+ /*
+ * The fragment program may get color from a state var rather than
+ * a fragment input (vertex output) if it's constant.
+ * See the texenvprogram.c code.
+ * So, search the program's parameter list now to see if the program
+ * gets color from a state var instead of a conventional fragment
+ * input register.
+ */
+ for (i = 0; i < progB->Parameters->NumParameters; i++) {
+ struct gl_program_parameter *p = &progB->Parameters->Parameters[i];
+ if (p->Type == PROGRAM_STATE_VAR &&
+ p->StateIndexes[0] == STATE_INTERNAL &&
+ p->StateIndexes[1] == STATE_CURRENT_ATTRIB &&
+ (int) p->StateIndexes[2] == (int) VERT_ATTRIB_COLOR0) {
+ progB_inputsRead |= FRAG_BIT_COL0;
+ progB_colorFile = PROGRAM_STATE_VAR;
+ progB_colorIndex = i;
+ break;
+ }
+ }
+
+ /* Connect color outputs of fprogA to color inputs of fprogB, via a
+ * new temporary register.
+ */
+ if ((progA->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) &&
+ (progB_inputsRead & FRAG_BIT_COL0)) {
+ GLint tempReg = _mesa_find_free_register(usedTemps, MAX_PROGRAM_TEMPS,
+ firstTemp);
+ if (tempReg < 0) {
+ _mesa_problem(ctx, "No free temp regs found in "
+ "_mesa_combine_programs(), using 31");
+ tempReg = 31;
+ }
+ firstTemp = tempReg + 1;
+
+ /* replace writes to result.color[0] with tempReg */
+ replace_registers(newInst, lenA,
+ PROGRAM_OUTPUT, FRAG_RESULT_COLOR,
+ PROGRAM_TEMPORARY, tempReg);
+ /* replace reads from the input color with tempReg */
+ replace_registers(newInst + lenA, lenB,
+ progB_colorFile, progB_colorIndex, /* search for */
+ PROGRAM_TEMPORARY, tempReg /* replace with */ );
+ }
+
+ /* compute combined program's InputsRead */
+ inputsB = progB_inputsRead;
+ if (progA->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) {
+ inputsB &= ~(1 << FRAG_ATTRIB_COL0);
+ }
+ newProg->InputsRead = progA->InputsRead | inputsB;
+ newProg->OutputsWritten = progB->OutputsWritten;
+ newProg->SamplersUsed = progA->SamplersUsed | progB->SamplersUsed;
+ }
+ else {
+ /* vertex program */
+ assert(0); /* XXX todo */
+ }
+
+ /*
+ * Merge parameters (uniforms, constants, etc)
+ */
+ newProg->Parameters = _mesa_combine_parameter_lists(progA->Parameters,
+ progB->Parameters);
+
+ adjust_param_indexes(newInst + lenA, lenB, numParamsA);
+
+
+ return newProg;
+}
+
+
+/**
+ * Populate the 'used' array with flags indicating which registers (TEMPs,
+ * INPUTs, OUTPUTs, etc, are used by the given program.
+ * \param file type of register to scan for
+ * \param used returns true/false flags for in use / free
+ * \param usedSize size of the 'used' array
+ */
+void
+_mesa_find_used_registers(const struct gl_program *prog,
+ gl_register_file file,
+ GLboolean used[], GLuint usedSize)
+{
+ GLuint i, j;
+
+ memset(used, 0, usedSize);
+
+ for (i = 0; i < prog->NumInstructions; i++) {
+ const struct prog_instruction *inst = prog->Instructions + i;
+ const GLuint n = _mesa_num_inst_src_regs(inst->Opcode);
+
+ if (inst->DstReg.File == file) {
+ ASSERT(inst->DstReg.Index < usedSize);
+ if(inst->DstReg.Index < usedSize)
+ used[inst->DstReg.Index] = GL_TRUE;
+ }
+
+ for (j = 0; j < n; j++) {
+ if (inst->SrcReg[j].File == file) {
+ ASSERT(inst->SrcReg[j].Index < usedSize);
+ if(inst->SrcReg[j].Index < usedSize)
+ used[inst->SrcReg[j].Index] = GL_TRUE;
+ }
+ }
+ }
+}
+
+
+/**
+ * Scan the given 'used' register flag array for the first entry
+ * that's >= firstReg.
+ * \param used vector of flags indicating registers in use (as returned
+ * by _mesa_find_used_registers())
+ * \param usedSize size of the 'used' array
+ * \param firstReg first register to start searching at
+ * \return index of unused register, or -1 if none.
+ */
+GLint
+_mesa_find_free_register(const GLboolean used[],
+ GLuint usedSize, GLuint firstReg)
+{
+ GLuint i;
+
+ assert(firstReg < usedSize);
+
+ for (i = firstReg; i < usedSize; i++)
+ if (!used[i])
+ return i;
+
+ return -1;
+}
+
+
+
+/**
+ * Check if the given register index is valid (doesn't exceed implementation-
+ * dependent limits).
+ * \return GL_TRUE if OK, GL_FALSE if bad index
+ */
+GLboolean
+_mesa_valid_register_index(const struct gl_context *ctx,
+ gl_shader_type shaderType,
+ gl_register_file file, GLint index)
+{
+ const struct gl_program_constants *c;
+
+ switch (shaderType) {
+ case MESA_SHADER_VERTEX:
+ c = &ctx->Const.VertexProgram;
+ break;
+ case MESA_SHADER_FRAGMENT:
+ c = &ctx->Const.FragmentProgram;
+ break;
+ case MESA_SHADER_GEOMETRY:
+ c = &ctx->Const.GeometryProgram;
+ break;
+ default:
+ _mesa_problem(ctx,
+ "unexpected shader type in _mesa_valid_register_index()");
+ return GL_FALSE;
+ }
+
+ switch (file) {
+ case PROGRAM_UNDEFINED:
+ return GL_TRUE; /* XXX or maybe false? */
+
+ case PROGRAM_TEMPORARY:
+ return index >= 0 && index < c->MaxTemps;
+
+ case PROGRAM_ENV_PARAM:
+ return index >= 0 && index < c->MaxEnvParams;
+
+ case PROGRAM_LOCAL_PARAM:
+ return index >= 0 && index < c->MaxLocalParams;
+
+ case PROGRAM_NAMED_PARAM:
+ return index >= 0 && index < c->MaxParameters;
+
+ case PROGRAM_UNIFORM:
+ case PROGRAM_STATE_VAR:
+ /* aka constant buffer */
+ return index >= 0 && index < c->MaxUniformComponents / 4;
+
+ case PROGRAM_CONSTANT:
+ /* constant buffer w/ possible relative negative addressing */
+ return (index > (int) c->MaxUniformComponents / -4 &&
+ index < c->MaxUniformComponents / 4);
+
+ case PROGRAM_INPUT:
+ if (index < 0)
+ return GL_FALSE;
+
+ switch (shaderType) {
+ case MESA_SHADER_VERTEX:
+ return index < VERT_ATTRIB_GENERIC0 + c->MaxAttribs;
+ case MESA_SHADER_FRAGMENT:
+ return index < FRAG_ATTRIB_VAR0 + ctx->Const.MaxVarying;
+ case MESA_SHADER_GEOMETRY:
+ return index < GEOM_ATTRIB_VAR0 + ctx->Const.MaxVarying;
+ default:
+ return GL_FALSE;
+ }
+
+ case PROGRAM_OUTPUT:
+ if (index < 0)
+ return GL_FALSE;
+
+ switch (shaderType) {
+ case MESA_SHADER_VERTEX:
+ return index < VERT_RESULT_VAR0 + ctx->Const.MaxVarying;
+ case MESA_SHADER_FRAGMENT:
+ return index < FRAG_RESULT_DATA0 + ctx->Const.MaxDrawBuffers;
+ case MESA_SHADER_GEOMETRY:
+ return index < GEOM_RESULT_VAR0 + ctx->Const.MaxVarying;
+ default:
+ return GL_FALSE;
+ }
+
+ case PROGRAM_ADDRESS:
+ return index >= 0 && index < c->MaxAddressRegs;
+
+ default:
+ _mesa_problem(ctx,
+ "unexpected register file in _mesa_valid_register_index()");
+ return GL_FALSE;
+ }
+}
+
+
+
+/**
+ * "Post-process" a GPU program. This is intended to be used for debugging.
+ * Example actions include no-op'ing instructions or changing instruction
+ * behaviour.
+ */
+void
+_mesa_postprocess_program(struct gl_context *ctx, struct gl_program *prog)
+{
+ static const GLfloat white[4] = { 0.5, 0.5, 0.5, 0.5 };
+ GLuint i;
+ GLuint whiteSwizzle;
+ GLint whiteIndex = _mesa_add_unnamed_constant(prog->Parameters,
+ white, 4, &whiteSwizzle);
+
+ (void) whiteIndex;
+
+ for (i = 0; i < prog->NumInstructions; i++) {
+ struct prog_instruction *inst = prog->Instructions + i;
+ const GLuint n = _mesa_num_inst_src_regs(inst->Opcode);
+
+ (void) n;
+
+ if (_mesa_is_tex_instruction(inst->Opcode)) {
+#if 0
+ /* replace TEX/TXP/TXB with MOV */
+ inst->Opcode = OPCODE_MOV;
+ inst->DstReg.WriteMask = WRITEMASK_XYZW;
+ inst->SrcReg[0].Swizzle = SWIZZLE_XYZW;
+ inst->SrcReg[0].Negate = NEGATE_NONE;
+#endif
+
+#if 0
+ /* disable shadow texture mode */
+ inst->TexShadow = 0;
+#endif
+ }
+
+ if (inst->Opcode == OPCODE_TXP) {
+#if 0
+ inst->Opcode = OPCODE_MOV;
+ inst->DstReg.WriteMask = WRITEMASK_XYZW;
+ inst->SrcReg[0].File = PROGRAM_CONSTANT;
+ inst->SrcReg[0].Index = whiteIndex;
+ inst->SrcReg[0].Swizzle = SWIZZLE_XYZW;
+ inst->SrcReg[0].Negate = NEGATE_NONE;
+#endif
+#if 0
+ inst->TexShadow = 0;
+#endif
+#if 0
+ inst->Opcode = OPCODE_TEX;
+ inst->TexShadow = 0;
+#endif
+ }
+
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 00:38:25 +0000