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Diffstat (limited to 'src/mesa/shader/program.c')
| -rw-r--r-- | src/mesa/shader/program.c | 913 |
1 files changed, 0 insertions, 913 deletions
diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c deleted file mode 100644 index a6ada8a048b..00000000000 --- a/src/mesa/shader/program.c +++ /dev/null @@ -1,913 +0,0 @@ -/* - * 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 "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(GLcontext *ctx) -{ - GLuint i; - - /* - * If this assertion fails, we need to increase the field - * size for register indexes. - */ - ASSERT(ctx->Const.VertexProgram.MaxUniformComponents / 4 - <= (1 << INST_INDEX_BITS)); - ASSERT(ctx->Const.FragmentProgram.MaxUniformComponents / 4 - <= (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 - - - /* 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(GLcontext *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 - /* 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(GLcontext *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 - - /* 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(GLcontext *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( GLcontext *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( GLcontext *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( GLcontext *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; -} - - -/** - * 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(GLcontext *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; - 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(GLcontext *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(GLcontext *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(GLcontext *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); - } - 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" : "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" : "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(GLcontext *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->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; - 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(GLcontext *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 && - p->StateIndexes[2] == 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 & (1 << 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 & (1 << 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) { - used[inst->DstReg.Index] = GL_TRUE; - } - - for (j = 0; j < n; j++) { - if (inst->SrcReg[j].File == file) { - 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; -} - - -/** - * "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(GLcontext *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 - } - - } -} |