| /* |
| * 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 << 4)); |
| |
| 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_shader_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, |
| ctx->Shared->DefaultVertexProgram); |
| assert(ctx->VertexProgram.Current); |
| #endif |
| |
| #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program |
| _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current, |
| ctx->Shared->DefaultFragmentProgram); |
| assert(ctx->FragmentProgram.Current); |
| #endif |
| |
| #if FEATURE_ARB_geometry_shader4 |
| _mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current, |
| 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); |
| |
| if (prog->Instructions) { |
| _mesa_free_instructions(prog->Instructions, prog->NumInstructions); |
| } |
| if (prog->Parameters) { |
| _mesa_free_parameter_list(prog->Parameters); |
| } |
| |
| 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 |
| * This is normally only called from the _mesa_reference_program() macro |
| * when there's a real pointer change. |
| */ |
| void |
| _mesa_reference_program_(struct gl_context *ctx, |
| struct gl_program **ptr, |
| struct gl_program *prog) |
| { |
| #ifndef NDEBUG |
| 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); |
| } |
| #endif |
| |
| 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)); |
| 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 = gl_vertex_program_const(prog); |
| struct gl_vertex_program *vpc = gl_vertex_program(clone); |
| vpc->IsPositionInvariant = vp->IsPositionInvariant; |
| vpc->IsNVProgram = vp->IsNVProgram; |
| } |
| break; |
| case GL_FRAGMENT_PROGRAM_ARB: |
| { |
| const struct gl_fragment_program *fp = gl_fragment_program_const(prog); |
| struct gl_fragment_program *fpc = gl_fragment_program(clone); |
| fpc->UsesKill = fp->UsesKill; |
| fpc->UsesDFdy = fp->UsesDFdy; |
| fpc->OriginUpperLeft = fp->OriginUpperLeft; |
| fpc->PixelCenterInteger = fp->PixelCenterInteger; |
| } |
| break; |
| case MESA_GEOMETRY_PROGRAM: |
| { |
| const struct gl_geometry_program *gp = gl_geometry_program_const(prog); |
| struct gl_geometry_program *gpc = 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; |
| GLbitfield64 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) { |
| const struct gl_fragment_program *fprogA, *fprogB; |
| struct gl_fragment_program *newFprog; |
| GLbitfield64 progB_inputsRead = progB->InputsRead; |
| GLint progB_colorFile, progB_colorIndex; |
| |
| fprogA = gl_fragment_program_const(progA); |
| fprogB = gl_fragment_program_const(progB); |
| newFprog = gl_fragment_program(newProg); |
| |
| newFprog->UsesKill = fprogA->UsesKill || fprogB->UsesKill; |
| newFprog->UsesDFdy = fprogA->UsesDFdy || fprogB->UsesDFdy; |
| |
| /* 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, |
| (gl_constant_value *) 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 |
| } |
| |
| } |
| } |
