/* * Mesa 3-D graphics library * Version: 6.5.1 * * Copyright (C) 1999-2006 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 "glheader.h" #include "context.h" #include "hash.h" #include "imports.h" #include "macros.h" #include "mtypes.h" #include "program.h" #include "nvfragparse.h" #include "program_instruction.h" #include "nvvertparse.h" #include "atifragshader.h" static const char * make_state_string(const GLint stateTokens[6]); static GLuint make_state_flags(const GLint state[]); /**********************************************************************/ /* Utility functions */ /**********************************************************************/ /* 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; ctx->Program.ErrorPos = -1; ctx->Program.ErrorString = _mesa_strdup(""); #if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program ctx->VertexProgram.Enabled = GL_FALSE; ctx->VertexProgram.PointSizeEnabled = GL_FALSE; ctx->VertexProgram.TwoSideEnabled = GL_FALSE; ctx->VertexProgram.Current = (struct gl_vertex_program *) ctx->Shared->DefaultVertexProgram; assert(ctx->VertexProgram.Current); ctx->VertexProgram.Current->Base.RefCount++; for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) { ctx->VertexProgram.TrackMatrix[i] = GL_NONE; ctx->VertexProgram.TrackMatrixTransform[i] = GL_IDENTITY_NV; } #endif #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program ctx->FragmentProgram.Enabled = GL_FALSE; ctx->FragmentProgram.Current = (struct gl_fragment_program *) ctx->Shared->DefaultFragmentProgram; assert(ctx->FragmentProgram.Current); ctx->FragmentProgram.Current->Base.RefCount++; #endif /* XXX probably move this stuff */ #if FEATURE_ATI_fragment_shader ctx->ATIFragmentShader.Enabled = GL_FALSE; ctx->ATIFragmentShader.Current = (struct ati_fragment_shader *) 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 if (ctx->VertexProgram.Current) { ctx->VertexProgram.Current->Base.RefCount--; if (ctx->VertexProgram.Current->Base.RefCount <= 0) ctx->Driver.DeleteProgram(ctx, &(ctx->VertexProgram.Current->Base)); } #endif #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program if (ctx->FragmentProgram.Current) { ctx->FragmentProgram.Current->Base.RefCount--; if (ctx->FragmentProgram.Current->Base.RefCount <= 0) ctx->Driver.DeleteProgram(ctx, &(ctx->FragmentProgram.Current->Base)); } #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) { _mesa_free(ctx->ATIFragmentShader.Current); } } #endif _mesa_free((void *) ctx->Program.ErrorString); } /** * 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; _mesa_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 * _mesa_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 *) _mesa_malloc(len + 1); _mesa_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) { prog->Id = id; prog->Target = target; prog->Resident = GL_TRUE; prog->RefCount = 1; } 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) { switch (target) { case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */ return _mesa_init_vertex_program(ctx, CALLOC_STRUCT(gl_vertex_program), target, id ); case GL_FRAGMENT_PROGRAM_NV: case GL_FRAGMENT_PROGRAM_ARB: return _mesa_init_fragment_program(ctx, CALLOC_STRUCT(gl_fragment_program), target, id ); default: _mesa_problem(ctx, "bad target in _mesa_new_program"); return NULL; } } /** * 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); if (prog->String) _mesa_free(prog->String); if (prog->Instructions) { GLuint i; for (i = 0; i < prog->NumInstructions; i++) { if (prog->Instructions[i].Data) _mesa_free(prog->Instructions[i].Data); } _mesa_free(prog->Instructions); } if (prog->Parameters) { _mesa_free_parameter_list(prog->Parameters); } _mesa_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; } /**********************************************************************/ /* Program parameter functions */ /**********************************************************************/ struct gl_program_parameter_list * _mesa_new_parameter_list(void) { return (struct gl_program_parameter_list *) _mesa_calloc(sizeof(struct gl_program_parameter_list)); } /** * Free a parameter list and all its parameters */ void _mesa_free_parameter_list(struct gl_program_parameter_list *paramList) { GLuint i; for (i = 0; i < paramList->NumParameters; i++) { if (paramList->Parameters[i].Name) _mesa_free((void *) paramList->Parameters[i].Name); } _mesa_free(paramList->Parameters); if (paramList->ParameterValues) _mesa_align_free(paramList->ParameterValues); _mesa_free(paramList); } /** * Add a new parameter to a parameter list. * \param paramList the list to add the parameter to * \param name the parameter name, will be duplicated/copied! * \param values initial parameter value, 4 GLfloats * \param type type of parameter, such as * \return index of new parameter in the list, or -1 if error (out of mem) */ static GLint add_parameter(struct gl_program_parameter_list *paramList, const char *name, const GLfloat values[4], enum register_file type) { const GLuint n = paramList->NumParameters; if (n == paramList->Size) { /* Need to grow the parameter list array */ if (paramList->Size == 0) paramList->Size = 8; else paramList->Size *= 2; /* realloc arrays */ paramList->Parameters = (struct gl_program_parameter *) _mesa_realloc(paramList->Parameters, n * sizeof(struct gl_program_parameter), paramList->Size * sizeof(struct gl_program_parameter)); paramList->ParameterValues = (GLfloat (*)[4]) _mesa_align_realloc(paramList->ParameterValues, /* old buf */ n * 4 * sizeof(GLfloat), /* old size */ paramList->Size * 4 *sizeof(GLfloat), /* new sz */ 16); } if (!paramList->Parameters || !paramList->ParameterValues) { /* out of memory */ paramList->NumParameters = 0; paramList->Size = 0; return -1; } else { paramList->NumParameters = n + 1; _mesa_memset(¶mList->Parameters[n], 0, sizeof(struct gl_program_parameter)); paramList->Parameters[n].Name = name ? _mesa_strdup(name) : NULL; paramList->Parameters[n].Type = type; if (values) COPY_4V(paramList->ParameterValues[n], values); return (GLint) n; } } /** * Add a new named program parameter (Ex: NV_fragment_program DEFINE statement) * \return index of the new entry in the parameter list */ GLint _mesa_add_named_parameter(struct gl_program_parameter_list *paramList, const char *name, const GLfloat values[4]) { return add_parameter(paramList, name, values, PROGRAM_NAMED_PARAM); } /** * Add a new named constant to the parameter list. * This will be used when the program contains something like this: * PARAM myVals = { 0, 1, 2, 3 }; * * \param paramList - the parameter list * \param values - four float values * \return index of the new parameter. */ GLint _mesa_add_named_constant(struct gl_program_parameter_list *paramList, const char *name, const GLfloat values[4]) { return add_parameter(paramList, name, values, PROGRAM_CONSTANT); } /** * Add a new unnamed constant to the parameter list. * This will be used when the program contains something like this: * MOV r, { 0, 1, 2, 3 }; * * \param paramList - the parameter list * \param values - four float values * \return index of the new parameter. */ GLint _mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList, const GLfloat values[4]) { return add_parameter(paramList, NULL, values, PROGRAM_CONSTANT); } /** * Add a new state reference to the parameter list. * This will be used when the program contains something like this: * PARAM ambient = state.material.front.ambient; * * \param paramList - the parameter list * \param state - an array of 6 state tokens * \return index of the new parameter. */ GLint _mesa_add_state_reference(struct gl_program_parameter_list *paramList, const GLint *stateTokens) { /* XXX we should probably search the current parameter list to see if * the new state reference is already present. */ GLint index; const char *name = make_state_string(stateTokens); index = add_parameter(paramList, name, NULL, PROGRAM_STATE_VAR); if (index >= 0) { GLuint i; for (i = 0; i < 6; i++) { paramList->Parameters[index].StateIndexes[i] = (enum state_index) stateTokens[i]; } paramList->StateFlags |= make_state_flags(stateTokens); } /* free name string here since we duplicated it in add_parameter() */ _mesa_free((void *) name); return index; } /** * Lookup a parameter value by name in the given parameter list. * \return pointer to the float[4] values. */ GLfloat * _mesa_lookup_parameter_value(struct gl_program_parameter_list *paramList, GLsizei nameLen, const char *name) { GLuint i; if (!paramList) return NULL; if (nameLen == -1) { /* name is null-terminated */ for (i = 0; i < paramList->NumParameters; i++) { if (paramList->Parameters[i].Name && _mesa_strcmp(paramList->Parameters[i].Name, name) == 0) return paramList->ParameterValues[i]; } } else { /* name is not null-terminated, use nameLen */ for (i = 0; i < paramList->NumParameters; i++) { if (paramList->Parameters[i].Name && _mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen) return paramList->ParameterValues[i]; } } return NULL; } /** * Lookup a parameter index by name in the given parameter list. * \return index of parameter in the list. */ GLint _mesa_lookup_parameter_index(struct gl_program_parameter_list *paramList, GLsizei nameLen, const char *name) { GLint i; if (!paramList) return -1; if (nameLen == -1) { /* name is null-terminated */ for (i = 0; i < (GLint) paramList->NumParameters; i++) { if (paramList->Parameters[i].Name && _mesa_strcmp(paramList->Parameters[i].Name, name) == 0) return i; } } else { /* name is not null-terminated, use nameLen */ for (i = 0; i < (GLint) paramList->NumParameters; i++) { if (paramList->Parameters[i].Name && _mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen) return i; } } return -1; } /** * Use the list of tokens in the state[] array to find global GL state * and return it in . Usually, four values are returned in * but matrix queries may return as many as 16 values. * This function is used for ARB vertex/fragment programs. * The program parser will produce the state[] values. */ static void _mesa_fetch_state(GLcontext *ctx, const enum state_index state[], GLfloat *value) { switch (state[0]) { case STATE_MATERIAL: { /* state[1] is either 0=front or 1=back side */ const GLuint face = (GLuint) state[1]; /* state[2] is the material attribute */ switch (state[2]) { case STATE_AMBIENT: if (face == 0) COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT]); else COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT]); return; case STATE_DIFFUSE: if (face == 0) COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE]); else COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE]); return; case STATE_SPECULAR: if (face == 0) COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR]); else COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SPECULAR]); return; case STATE_EMISSION: if (face == 0) COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION]); else COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION]); return; case STATE_SHININESS: if (face == 0) value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0]; else value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0]; value[1] = 0.0F; value[2] = 0.0F; value[3] = 1.0F; return; default: _mesa_problem(ctx, "Invalid material state in fetch_state"); return; } } case STATE_LIGHT: { /* state[1] is the light number */ const GLuint ln = (GLuint) state[1]; /* state[2] is the light attribute */ switch (state[2]) { case STATE_AMBIENT: COPY_4V(value, ctx->Light.Light[ln].Ambient); return; case STATE_DIFFUSE: COPY_4V(value, ctx->Light.Light[ln].Diffuse); return; case STATE_SPECULAR: COPY_4V(value, ctx->Light.Light[ln].Specular); return; case STATE_POSITION: COPY_4V(value, ctx->Light.Light[ln].EyePosition); return; case STATE_ATTENUATION: value[0] = ctx->Light.Light[ln].ConstantAttenuation; value[1] = ctx->Light.Light[ln].LinearAttenuation; value[2] = ctx->Light.Light[ln].QuadraticAttenuation; value[3] = ctx->Light.Light[ln].SpotExponent; return; case STATE_SPOT_DIRECTION: COPY_3V(value, ctx->Light.Light[ln].EyeDirection); value[3] = ctx->Light.Light[ln]._CosCutoff; return; case STATE_HALF: { GLfloat eye_z[] = {0, 0, 1}; /* Compute infinite half angle vector: * half-vector = light_position + (0, 0, 1) * and then normalize. w = 0 * * light.EyePosition.w should be 0 for infinite lights. */ ADD_3V(value, eye_z, ctx->Light.Light[ln].EyePosition); NORMALIZE_3FV(value); value[3] = 0; } return; case STATE_POSITION_NORMALIZED: COPY_4V(value, ctx->Light.Light[ln].EyePosition); NORMALIZE_3FV( value ); return; default: _mesa_problem(ctx, "Invalid light state in fetch_state"); return; } } case STATE_LIGHTMODEL_AMBIENT: COPY_4V(value, ctx->Light.Model.Ambient); return; case STATE_LIGHTMODEL_SCENECOLOR: if (state[1] == 0) { /* front */ GLint i; for (i = 0; i < 3; i++) { value[i] = ctx->Light.Model.Ambient[i] * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT][i] + ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION][i]; } value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; } else { /* back */ GLint i; for (i = 0; i < 3; i++) { value[i] = ctx->Light.Model.Ambient[i] * ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT][i] + ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION][i]; } value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; } return; case STATE_LIGHTPROD: { const GLuint ln = (GLuint) state[1]; const GLuint face = (GLuint) state[2]; GLint i; ASSERT(face == 0 || face == 1); switch (state[3]) { case STATE_AMBIENT: for (i = 0; i < 3; i++) { value[i] = ctx->Light.Light[ln].Ambient[i] * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i]; } /* [3] = material alpha */ value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3]; return; case STATE_DIFFUSE: for (i = 0; i < 3; i++) { value[i] = ctx->Light.Light[ln].Diffuse[i] * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i]; } /* [3] = material alpha */ value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3]; return; case STATE_SPECULAR: for (i = 0; i < 3; i++) { value[i] = ctx->Light.Light[ln].Specular[i] * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i]; } /* [3] = material alpha */ value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3]; return; default: _mesa_problem(ctx, "Invalid lightprod state in fetch_state"); return; } } case STATE_TEXGEN: { /* state[1] is the texture unit */ const GLuint unit = (GLuint) state[1]; /* state[2] is the texgen attribute */ switch (state[2]) { case STATE_TEXGEN_EYE_S: COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneS); return; case STATE_TEXGEN_EYE_T: COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneT); return; case STATE_TEXGEN_EYE_R: COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneR); return; case STATE_TEXGEN_EYE_Q: COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneQ); return; case STATE_TEXGEN_OBJECT_S: COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneS); return; case STATE_TEXGEN_OBJECT_T: COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneT); return; case STATE_TEXGEN_OBJECT_R: COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneR); return; case STATE_TEXGEN_OBJECT_Q: COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneQ); return; default: _mesa_problem(ctx, "Invalid texgen state in fetch_state"); return; } } case STATE_TEXENV_COLOR: { /* state[1] is the texture unit */ const GLuint unit = (GLuint) state[1]; COPY_4V(value, ctx->Texture.Unit[unit].EnvColor); } return; case STATE_FOG_COLOR: COPY_4V(value, ctx->Fog.Color); return; case STATE_FOG_PARAMS: value[0] = ctx->Fog.Density; value[1] = ctx->Fog.Start; value[2] = ctx->Fog.End; value[3] = 1.0F / (ctx->Fog.End - ctx->Fog.Start); return; case STATE_CLIPPLANE: { const GLuint plane = (GLuint) state[1]; COPY_4V(value, ctx->Transform.EyeUserPlane[plane]); } return; case STATE_POINT_SIZE: value[0] = ctx->Point.Size; value[1] = ctx->Point.MinSize; value[2] = ctx->Point.MaxSize; value[3] = ctx->Point.Threshold; return; case STATE_POINT_ATTENUATION: value[0] = ctx->Point.Params[0]; value[1] = ctx->Point.Params[1]; value[2] = ctx->Point.Params[2]; value[3] = 1.0F; return; case STATE_MATRIX: { /* state[1] = modelview, projection, texture, etc. */ /* state[2] = which texture matrix or program matrix */ /* state[3] = first column to fetch */ /* state[4] = last column to fetch */ /* state[5] = transpose, inverse or invtrans */ const GLmatrix *matrix; const enum state_index mat = state[1]; const GLuint index = (GLuint) state[2]; const GLuint first = (GLuint) state[3]; const GLuint last = (GLuint) state[4]; const enum state_index modifier = state[5]; const GLfloat *m; GLuint row, i; if (mat == STATE_MODELVIEW) { matrix = ctx->ModelviewMatrixStack.Top; } else if (mat == STATE_PROJECTION) { matrix = ctx->ProjectionMatrixStack.Top; } else if (mat == STATE_MVP) { matrix = &ctx->_ModelProjectMatrix; } else if (mat == STATE_TEXTURE) { matrix = ctx->TextureMatrixStack[index].Top; } else if (mat == STATE_PROGRAM) { matrix = ctx->ProgramMatrixStack[index].Top; } else { _mesa_problem(ctx, "Bad matrix name in _mesa_fetch_state()"); return; } if (modifier == STATE_MATRIX_INVERSE || modifier == STATE_MATRIX_INVTRANS) { /* Be sure inverse is up to date: */ _math_matrix_alloc_inv( (GLmatrix *) matrix ); _math_matrix_analyse( (GLmatrix*) matrix ); m = matrix->inv; } else { m = matrix->m; } if (modifier == STATE_MATRIX_TRANSPOSE || modifier == STATE_MATRIX_INVTRANS) { for (i = 0, row = first; row <= last; row++) { value[i++] = m[row * 4 + 0]; value[i++] = m[row * 4 + 1]; value[i++] = m[row * 4 + 2]; value[i++] = m[row * 4 + 3]; } } else { for (i = 0, row = first; row <= last; row++) { value[i++] = m[row + 0]; value[i++] = m[row + 4]; value[i++] = m[row + 8]; value[i++] = m[row + 12]; } } } return; case STATE_DEPTH_RANGE: value[0] = ctx->Viewport.Near; /* near */ value[1] = ctx->Viewport.Far; /* far */ value[2] = ctx->Viewport.Far - ctx->Viewport.Near; /* far - near */ value[3] = 0; return; case STATE_FRAGMENT_PROGRAM: { /* state[1] = {STATE_ENV, STATE_LOCAL} */ /* state[2] = parameter index */ const int idx = (int) state[2]; switch (state[1]) { case STATE_ENV: COPY_4V(value, ctx->FragmentProgram.Parameters[idx]); break; case STATE_LOCAL: COPY_4V(value, ctx->FragmentProgram.Current->Base.LocalParams[idx]); break; default: _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()"); return; } } return; case STATE_VERTEX_PROGRAM: { /* state[1] = {STATE_ENV, STATE_LOCAL} */ /* state[2] = parameter index */ const int idx = (int) state[2]; switch (state[1]) { case STATE_ENV: COPY_4V(value, ctx->VertexProgram.Parameters[idx]); break; case STATE_LOCAL: COPY_4V(value, ctx->VertexProgram.Current->Base.LocalParams[idx]); break; default: _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()"); return; } } return; case STATE_INTERNAL: { switch (state[1]) { case STATE_NORMAL_SCALE: ASSIGN_4V(value, ctx->_ModelViewInvScale, 0, 0, 1); break; default: _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()"); return; } } return; default: _mesa_problem(ctx, "Invalid state in _mesa_fetch_state"); return; } } /** * Return a bit mask of the Mesa state flags under which a parameter's * value might change. */ static GLuint make_state_flags(const GLint state[]) { switch (state[0]) { case STATE_MATERIAL: case STATE_LIGHT: case STATE_LIGHTMODEL_AMBIENT: case STATE_LIGHTMODEL_SCENECOLOR: case STATE_LIGHTPROD: return _NEW_LIGHT; case STATE_TEXGEN: case STATE_TEXENV_COLOR: return _NEW_TEXTURE; case STATE_FOG_COLOR: case STATE_FOG_PARAMS: return _NEW_FOG; case STATE_CLIPPLANE: return _NEW_TRANSFORM; case STATE_POINT_SIZE: case STATE_POINT_ATTENUATION: return _NEW_POINT; case STATE_MATRIX: switch (state[1]) { case STATE_MODELVIEW: return _NEW_MODELVIEW; case STATE_PROJECTION: return _NEW_PROJECTION; case STATE_MVP: return _NEW_MODELVIEW | _NEW_PROJECTION; case STATE_TEXTURE: return _NEW_TEXTURE_MATRIX; case STATE_PROGRAM: return _NEW_TRACK_MATRIX; default: _mesa_problem(NULL, "unexpected matrix in make_state_flags()"); return 0; } case STATE_DEPTH_RANGE: return _NEW_VIEWPORT; case STATE_FRAGMENT_PROGRAM: case STATE_VERTEX_PROGRAM: return _NEW_PROGRAM; case STATE_INTERNAL: switch (state[1]) { case STATE_NORMAL_SCALE: return _NEW_MODELVIEW; default: _mesa_problem(NULL, "unexpected int. state in make_state_flags()"); return 0; } default: _mesa_problem(NULL, "unexpected state[0] in make_state_flags()"); return 0; } } static void append(char *dst, const char *src) { while (*dst) dst++; while (*src) *dst++ = *src++; *dst = 0; } static void append_token(char *dst, enum state_index k) { switch (k) { case STATE_MATERIAL: append(dst, "material."); break; case STATE_LIGHT: append(dst, "light"); break; case STATE_LIGHTMODEL_AMBIENT: append(dst, "lightmodel.ambient"); break; case STATE_LIGHTMODEL_SCENECOLOR: break; case STATE_LIGHTPROD: append(dst, "lightprod"); break; case STATE_TEXGEN: append(dst, "texgen"); break; case STATE_FOG_COLOR: append(dst, "fog.color"); break; case STATE_FOG_PARAMS: append(dst, "fog.params"); break; case STATE_CLIPPLANE: append(dst, "clip"); break; case STATE_POINT_SIZE: append(dst, "point.size"); break; case STATE_POINT_ATTENUATION: append(dst, "point.attenuation"); break; case STATE_MATRIX: append(dst, "matrix."); break; case STATE_MODELVIEW: append(dst, "modelview"); break; case STATE_PROJECTION: append(dst, "projection"); break; case STATE_MVP: append(dst, "mvp"); break; case STATE_TEXTURE: append(dst, "texture"); break; case STATE_PROGRAM: append(dst, "program"); break; case STATE_MATRIX_INVERSE: append(dst, ".inverse"); break; case STATE_MATRIX_TRANSPOSE: append(dst, ".transpose"); break; case STATE_MATRIX_INVTRANS: append(dst, ".invtrans"); break; case STATE_AMBIENT: append(dst, "ambient"); break; case STATE_DIFFUSE: append(dst, "diffuse"); break; case STATE_SPECULAR: append(dst, "specular"); break; case STATE_EMISSION: append(dst, "emission"); break; case STATE_SHININESS: append(dst, "shininess"); break; case STATE_HALF: append(dst, "half"); break; case STATE_POSITION: append(dst, ".position"); break; case STATE_ATTENUATION: append(dst, ".attenuation"); break; case STATE_SPOT_DIRECTION: append(dst, ".spot.direction"); break; case STATE_TEXGEN_EYE_S: append(dst, "eye.s"); break; case STATE_TEXGEN_EYE_T: append(dst, "eye.t"); break; case STATE_TEXGEN_EYE_R: append(dst, "eye.r"); break; case STATE_TEXGEN_EYE_Q: append(dst, "eye.q"); break; case STATE_TEXGEN_OBJECT_S: append(dst, "object.s"); break; case STATE_TEXGEN_OBJECT_T: append(dst, "object.t"); break; case STATE_TEXGEN_OBJECT_R: append(dst, "object.r"); break; case STATE_TEXGEN_OBJECT_Q: append(dst, "object.q"); break; case STATE_TEXENV_COLOR: append(dst, "texenv"); break; case STATE_DEPTH_RANGE: append(dst, "depth.range"); break; case STATE_VERTEX_PROGRAM: case STATE_FRAGMENT_PROGRAM: break; case STATE_ENV: append(dst, "env"); break; case STATE_LOCAL: append(dst, "local"); break; case STATE_INTERNAL: case STATE_NORMAL_SCALE: case STATE_POSITION_NORMALIZED: append(dst, "(internal)"); break; default: ; } } static void append_face(char *dst, GLint face) { if (face == 0) append(dst, "front."); else append(dst, "back."); } static void append_index(char *dst, GLint index) { char s[20]; _mesa_sprintf(s, "[%d].", index); append(dst, s); } /** * Make a string from the given state vector. * For example, return "state.matrix.texture[2].inverse". * Use _mesa_free() to deallocate the string. */ static const char * make_state_string(const GLint state[6]) { char str[1000] = ""; char tmp[30]; append(str, "state."); append_token(str, (enum state_index) state[0]); switch (state[0]) { case STATE_MATERIAL: append_face(str, state[1]); append_token(str, (enum state_index) state[2]); break; case STATE_LIGHT: append(str, "light"); append_index(str, state[1]); /* light number [i]. */ append_token(str, (enum state_index) state[2]); /* coefficients */ break; case STATE_LIGHTMODEL_AMBIENT: append(str, "lightmodel.ambient"); break; case STATE_LIGHTMODEL_SCENECOLOR: if (state[1] == 0) { append(str, "lightmodel.front.scenecolor"); } else { append(str, "lightmodel.back.scenecolor"); } break; case STATE_LIGHTPROD: append_index(str, state[1]); /* light number [i]. */ append_face(str, state[2]); append_token(str, (enum state_index) state[3]); break; case STATE_TEXGEN: append_index(str, state[1]); /* tex unit [i] */ append_token(str, (enum state_index) state[2]); /* plane coef */ break; case STATE_TEXENV_COLOR: append_index(str, state[1]); /* tex unit [i] */ append(str, "color"); break; case STATE_FOG_COLOR: case STATE_FOG_PARAMS: break; case STATE_CLIPPLANE: append_index(str, state[1]); /* plane [i] */ append(str, "plane"); break; case STATE_POINT_SIZE: case STATE_POINT_ATTENUATION: break; case STATE_MATRIX: { /* state[1] = modelview, projection, texture, etc. */ /* state[2] = which texture matrix or program matrix */ /* state[3] = first column to fetch */ /* state[4] = last column to fetch */ /* state[5] = transpose, inverse or invtrans */ const enum state_index mat = (enum state_index) state[1]; const GLuint index = (GLuint) state[2]; const GLuint first = (GLuint) state[3]; const GLuint last = (GLuint) state[4]; const enum state_index modifier = (enum state_index) state[5]; append_token(str, mat); if (index) append_index(str, index); if (modifier) append_token(str, modifier); if (first == last) _mesa_sprintf(tmp, ".row[%d]", first); else _mesa_sprintf(tmp, ".row[%d..%d]", first, last); append(str, tmp); } break; case STATE_DEPTH_RANGE: break; case STATE_FRAGMENT_PROGRAM: case STATE_VERTEX_PROGRAM: /* state[1] = {STATE_ENV, STATE_LOCAL} */ /* state[2] = parameter index */ append_token(str, (enum state_index) state[1]); append_index(str, state[2]); break; case STATE_INTERNAL: break; default: _mesa_problem(NULL, "Invalid state in maka_state_string"); break; } return _mesa_strdup(str); } /** * Loop over all the parameters in a parameter list. If the parameter * is a GL state reference, look up the current value of that state * variable and put it into the parameter's Value[4] array. * This would be called at glBegin time when using a fragment program. */ void _mesa_load_state_parameters(GLcontext *ctx, struct gl_program_parameter_list *paramList) { GLuint i; if (!paramList) return; for (i = 0; i < paramList->NumParameters; i++) { if (paramList->Parameters[i].Type == PROGRAM_STATE_VAR) { _mesa_fetch_state(ctx, paramList->Parameters[i].StateIndexes, paramList->ParameterValues[i]); } } } /** * Initialize program instruction fields to defaults. */ void _mesa_init_instruction(struct prog_instruction *inst) { _mesa_bzero(inst, sizeof(struct prog_instruction)); inst->SrcReg[0].File = PROGRAM_UNDEFINED; inst->SrcReg[0].Swizzle = SWIZZLE_NOOP; inst->SrcReg[1].File = PROGRAM_UNDEFINED; inst->SrcReg[1].Swizzle = SWIZZLE_NOOP; inst->SrcReg[2].File = PROGRAM_UNDEFINED; inst->SrcReg[2].Swizzle = SWIZZLE_NOOP; inst->DstReg.File = PROGRAM_UNDEFINED; inst->DstReg.WriteMask = WRITEMASK_XYZW; inst->DstReg.CondMask = COND_TR; inst->DstReg.CondSwizzle = SWIZZLE_NOOP; inst->SaturateMode = SATURATE_OFF; inst->Precision = FLOAT32; } /** * Allocate an array of program instructions. * \param numInst number of instructions * \return pointer to instruction memory */ struct prog_instruction * _mesa_alloc_instructions(GLuint numInst) { return (struct prog_instruction *) _mesa_calloc(numInst * sizeof(struct prog_instruction)); } /** * Reallocate memory storing an array of program instructions. * This is used when we need to append additional instructions onto an * program. * \param oldInst pointer to first of old/src instructions * \param numOldInst number of instructions at * \param numNewInst desired size of new instruction array. * \return pointer to start of new instruction array. */ struct prog_instruction * _mesa_realloc_instructions(struct prog_instruction *oldInst, GLuint numOldInst, GLuint numNewInst) { struct prog_instruction *newInst; newInst = (struct prog_instruction *) _mesa_realloc(oldInst, numOldInst * sizeof(struct prog_instruction), numNewInst * sizeof(struct prog_instruction)); return newInst; } /** * Basic info about each instruction */ struct instruction_info { enum prog_opcode Opcode; const char *Name; GLuint NumSrcRegs; }; /** * Instruction info * \note Opcode should equal array index! */ static const struct instruction_info InstInfo[MAX_OPCODE] = { { OPCODE_ABS, "ABS", 1 }, { OPCODE_ADD, "ADD", 2 }, { OPCODE_ARA, "ARA", 1 }, { OPCODE_ARL, "ARL", 1 }, { OPCODE_ARL_NV, "ARL", 1 }, { OPCODE_ARR, "ARL", 1 }, { OPCODE_BRA, "BRA", 1 }, { OPCODE_CAL, "CAL", 1 }, { OPCODE_CMP, "CMP", 3 }, { OPCODE_COS, "COS", 1 }, { OPCODE_DDX, "DDX", 1 }, { OPCODE_DDY, "DDY", 1 }, { OPCODE_DP3, "DP3", 2 }, { OPCODE_DP4, "DP4", 2 }, { OPCODE_DPH, "DPH", 2 }, { OPCODE_DST, "DST", 2 }, { OPCODE_END, "END", 0 }, { OPCODE_EX2, "EX2", 1 }, { OPCODE_EXP, "EXP", 1 }, { OPCODE_FLR, "FLR", 1 }, { OPCODE_FRC, "FRC", 1 }, { OPCODE_KIL, "KIL", 1 }, { OPCODE_KIL_NV, "KIL", 0 }, { OPCODE_LG2, "LG2", 1 }, { OPCODE_LIT, "LIT", 1 }, { OPCODE_LOG, "LOG", 1 }, { OPCODE_LRP, "LRP", 3 }, { OPCODE_MAD, "MAD", 3 }, { OPCODE_MAX, "MAX", 2 }, { OPCODE_MIN, "MIN", 2 }, { OPCODE_MOV, "MOV", 1 }, { OPCODE_MUL, "MUL", 2 }, { OPCODE_PK2H, "PK2H", 1 }, { OPCODE_PK2US, "PK2US", 1 }, { OPCODE_PK4B, "PK4B", 1 }, { OPCODE_PK4UB, "PK4UB", 1 }, { OPCODE_POW, "POW", 2 }, { OPCODE_POPA, "POPA", 0 }, { OPCODE_PRINT, "PRINT", 1 }, { OPCODE_PUSHA, "PUSHA", 0 }, { OPCODE_RCC, "RCC", 1 }, { OPCODE_RCP, "RCP", 1 }, { OPCODE_RET, "RET", 1 }, { OPCODE_RFL, "RFL", 1 }, { OPCODE_RSQ, "RSQ", 1 }, { OPCODE_SCS, "SCS", 1 }, { OPCODE_SEQ, "SEQ", 2 }, { OPCODE_SFL, "SFL", 0 }, { OPCODE_SGE, "SGE", 2 }, { OPCODE_SGT, "SGT", 2 }, { OPCODE_SIN, "SIN", 1 }, { OPCODE_SLE, "SLE", 2 }, { OPCODE_SLT, "SLT", 2 }, { OPCODE_SNE, "SNE", 2 }, { OPCODE_SSG, "SSG", 1 }, { OPCODE_STR, "STR", 0 }, { OPCODE_SUB, "SUB", 2 }, { OPCODE_SWZ, "SWZ", 1 }, { OPCODE_TEX, "TEX", 1 }, { OPCODE_TXB, "TXB", 1 }, { OPCODE_TXD, "TXD", 3 }, { OPCODE_TXL, "TXL", 1 }, { OPCODE_TXP, "TXP", 1 }, { OPCODE_TXP_NV, "TXP", 1 }, { OPCODE_UP2H, "UP2H", 1 }, { OPCODE_UP2US, "UP2US", 1 }, { OPCODE_UP4B, "UP4B", 1 }, { OPCODE_UP4UB, "UP4UB", 1 }, { OPCODE_X2D, "X2D", 3 }, { OPCODE_XPD, "XPD", 2 } }; /** * Return the number of src registers for the given instruction/opcode. */ GLuint _mesa_num_inst_src_regs(enum prog_opcode opcode) { GLuint i; #ifdef DEBUG for (i = 0; i < MAX_OPCODE; i++) { ASSERT(i == InstInfo[i].Opcode); } #endif for (i = 0; i < MAX_OPCODE; i++) { if (InstInfo[i].Opcode == opcode) { return InstInfo[i].NumSrcRegs; } } _mesa_problem(NULL, "invalid opcode in _mesa_num_inst_src_regs"); return 0; } /** * Return string name for given program opcode. */ const char * _mesa_opcode_string(enum prog_opcode opcode) { ASSERT(opcode < MAX_OPCODE); return InstInfo[opcode].Name; } /** * Return string name for given program/register file. */ static const char * program_file_string(enum register_file f) { switch (f) { case PROGRAM_TEMPORARY: return "TEMP"; case PROGRAM_LOCAL_PARAM: return "LOCAL"; case PROGRAM_ENV_PARAM: return "ENV"; case PROGRAM_STATE_VAR: return "STATE"; case PROGRAM_INPUT: return "INPUT"; case PROGRAM_OUTPUT: return "OUTPUT"; case PROGRAM_NAMED_PARAM: return "NAMED"; case PROGRAM_CONSTANT: return "CONST"; case PROGRAM_WRITE_ONLY: return "WRITE_ONLY"; case PROGRAM_ADDRESS: return "ADDR"; default: return "!unkown!"; } } /** * Return a string representation of the given swizzle word. * If extended is true, use extended (comma-separated) format. */ static const char * swizzle_string(GLuint swizzle, GLuint negateBase, GLboolean extended) { static const char swz[] = "xyzw01"; static char s[20]; GLuint i = 0; if (!extended && swizzle == SWIZZLE_NOOP && negateBase == 0) return ""; /* no swizzle/negation */ if (!extended) s[i++] = '.'; if (negateBase & 0x1) s[i++] = '-'; s[i++] = swz[GET_SWZ(swizzle, 0)]; if (extended) { s[i++] = ','; } if (negateBase & 0x2) s[i++] = '-'; s[i++] = swz[GET_SWZ(swizzle, 1)]; if (extended) { s[i++] = ','; } if (negateBase & 0x4) s[i++] = '-'; s[i++] = swz[GET_SWZ(swizzle, 2)]; if (extended) { s[i++] = ','; } if (negateBase & 0x8) s[i++] = '-'; s[i++] = swz[GET_SWZ(swizzle, 3)]; s[i] = 0; return s; } static const char * writemask_string(GLuint writeMask) { static char s[10]; GLuint i = 0; if (writeMask == WRITEMASK_XYZW) return ""; s[i++] = '.'; if (writeMask & WRITEMASK_X) s[i++] = 'x'; if (writeMask & WRITEMASK_Y) s[i++] = 'y'; if (writeMask & WRITEMASK_Z) s[i++] = 'z'; if (writeMask & WRITEMASK_W) s[i++] = 'w'; s[i] = 0; return s; } static void print_dst_reg(const struct prog_dst_register *dstReg) { _mesa_printf(" %s[%d]%s", program_file_string((enum register_file) dstReg->File), dstReg->Index, writemask_string(dstReg->WriteMask)); } static void print_src_reg(const struct prog_src_register *srcReg) { _mesa_printf("%s[%d]%s", program_file_string((enum register_file) srcReg->File), srcReg->Index, swizzle_string(srcReg->Swizzle, srcReg->NegateBase, GL_FALSE)); } /** * Print a single vertex/fragment program instruction. */ void _mesa_print_instruction(const struct prog_instruction *inst) { switch (inst->Opcode) { case OPCODE_PRINT: _mesa_printf("PRINT '%s'", inst->Data); if (inst->SrcReg[0].File != PROGRAM_UNDEFINED) { _mesa_printf(", "); _mesa_printf("%s[%d]%s", program_file_string((enum register_file) inst->SrcReg[0].File), inst->SrcReg[0].Index, swizzle_string(inst->SrcReg[0].Swizzle, inst->SrcReg[0].NegateBase, GL_FALSE)); } _mesa_printf(";\n"); break; case OPCODE_SWZ: _mesa_printf("SWZ"); if (inst->SaturateMode == SATURATE_ZERO_ONE) _mesa_printf("_SAT"); print_dst_reg(&inst->DstReg); _mesa_printf("%s[%d], %s;\n", program_file_string((enum register_file) inst->SrcReg[0].File), inst->SrcReg[0].Index, swizzle_string(inst->SrcReg[0].Swizzle, inst->SrcReg[0].NegateBase, GL_TRUE)); break; case OPCODE_TEX: case OPCODE_TXP: case OPCODE_TXB: _mesa_printf("%s", _mesa_opcode_string(inst->Opcode)); if (inst->SaturateMode == SATURATE_ZERO_ONE) _mesa_printf("_SAT"); _mesa_printf(" "); print_dst_reg(&inst->DstReg); _mesa_printf(", "); print_src_reg(&inst->SrcReg[0]); _mesa_printf(", texture[%d], ", inst->TexSrcUnit); switch (inst->TexSrcTarget) { case TEXTURE_1D_INDEX: _mesa_printf("1D"); break; case TEXTURE_2D_INDEX: _mesa_printf("2D"); break; case TEXTURE_3D_INDEX: _mesa_printf("3D"); break; case TEXTURE_CUBE_INDEX: _mesa_printf("CUBE"); break; case TEXTURE_RECT_INDEX: _mesa_printf("RECT"); break; default: ; } _mesa_printf("\n"); break; case OPCODE_ARL: _mesa_printf("ARL addr.x, "); print_src_reg(&inst->SrcReg[0]); _mesa_printf(";\n"); break; /* XXX may need for other special-case instructions */ default: /* typical alu instruction */ { const GLuint numRegs = _mesa_num_inst_src_regs(inst->Opcode); GLuint j; _mesa_printf("%s", _mesa_opcode_string(inst->Opcode)); /* frag prog only */ if (inst->SaturateMode == SATURATE_ZERO_ONE) _mesa_printf("_SAT"); if (inst->DstReg.File != PROGRAM_UNDEFINED) { _mesa_printf(" %s[%d]%s", program_file_string((enum register_file) inst->DstReg.File), inst->DstReg.Index, writemask_string(inst->DstReg.WriteMask)); } if (numRegs > 0) _mesa_printf(", "); for (j = 0; j < numRegs; j++) { print_src_reg(inst->SrcReg + j); if (j + 1 < numRegs) _mesa_printf(", "); } _mesa_printf(";\n"); } } } /** * Print a vertx/fragment program to stdout. * XXX this function could be greatly improved. */ void _mesa_print_program(const struct gl_program *prog) { GLuint i; for (i = 0; i < prog->NumInstructions; i++) { _mesa_printf("%3d: ", i); _mesa_print_instruction(prog->Instructions + i); } } /** * Print all of a program's parameters. */ void _mesa_print_program_parameters(GLcontext *ctx, const struct gl_program *prog) { GLint i; _mesa_printf("NumInstructions=%d\n", prog->NumInstructions); _mesa_printf("NumTemporaries=%d\n", prog->NumTemporaries); _mesa_printf("NumParameters=%d\n", prog->NumParameters); _mesa_printf("NumAttributes=%d\n", prog->NumAttributes); _mesa_printf("NumAddressRegs=%d\n", prog->NumAddressRegs); _mesa_load_state_parameters(ctx, prog->Parameters); #if 0 _mesa_printf("Local Params:\n"); for (i = 0; i < MAX_PROGRAM_LOCAL_PARAMS; i++){ const GLfloat *p = prog->LocalParams[i]; _mesa_printf("%2d: %f, %f, %f, %f\n", i, p[0], p[1], p[2], p[3]); } #endif for (i = 0; i < prog->Parameters->NumParameters; i++){ struct gl_program_parameter *param = prog->Parameters->Parameters + i; const GLfloat *v = prog->Parameters->ParameterValues[i]; _mesa_printf("param[%d] %s = {%.3f, %.3f, %.3f, %.3f};\n", i, param->Name, v[0], v[1], v[2], v[3]); } } /** * Mixing ARB and NV vertex/fragment programs can be tricky. * Note: GL_VERTEX_PROGRAM_ARB == GL_VERTEX_PROGRAM_NV * but, GL_FRAGMENT_PROGRAM_ARB != GL_FRAGMENT_PROGRAM_NV * The two different fragment program targets are supposed to be compatible * to some extent (see GL_ARB_fragment_program spec). * This function does the compatibility check. */ static GLboolean compatible_program_targets(GLenum t1, GLenum t2) { if (t1 == t2) return GL_TRUE; if (t1 == GL_FRAGMENT_PROGRAM_ARB && t2 == GL_FRAGMENT_PROGRAM_NV) return GL_TRUE; if (t1 == GL_FRAGMENT_PROGRAM_NV && t2 == GL_FRAGMENT_PROGRAM_ARB) return GL_TRUE; return GL_FALSE; } /**********************************************************************/ /* API functions */ /**********************************************************************/ /** * Bind a program (make it current) * \note Called from the GL API dispatcher by both glBindProgramNV * and glBindProgramARB. */ void GLAPIENTRY _mesa_BindProgram(GLenum target, GLuint id) { struct gl_program *curProg, *newProg; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END(ctx); FLUSH_VERTICES(ctx, _NEW_PROGRAM); /* Error-check target and get curProg */ if ((target == GL_VERTEX_PROGRAM_ARB) && /* == GL_VERTEX_PROGRAM_NV */ (ctx->Extensions.NV_vertex_program || ctx->Extensions.ARB_vertex_program)) { curProg = &ctx->VertexProgram.Current->Base; } else if ((target == GL_FRAGMENT_PROGRAM_NV && ctx->Extensions.NV_fragment_program) || (target == GL_FRAGMENT_PROGRAM_ARB && ctx->Extensions.ARB_fragment_program)) { curProg = &ctx->FragmentProgram.Current->Base; } else { _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramNV/ARB(target)"); return; } /* * Get pointer to new program to bind. * NOTE: binding to a non-existant program is not an error. * That's supposed to be caught in glBegin. */ if (id == 0) { /* Bind a default program */ newProg = NULL; if (target == GL_VERTEX_PROGRAM_ARB) /* == GL_VERTEX_PROGRAM_NV */ newProg = ctx->Shared->DefaultVertexProgram; else newProg = ctx->Shared->DefaultFragmentProgram; } else { /* Bind a user program */ newProg = _mesa_lookup_program(ctx, id); if (!newProg || newProg == &_mesa_DummyProgram) { /* allocate a new program now */ newProg = ctx->Driver.NewProgram(ctx, target, id); if (!newProg) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramNV/ARB"); return; } _mesa_HashInsert(ctx->Shared->Programs, id, newProg); } else if (!compatible_program_targets(newProg->Target, target)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glBindProgramNV/ARB(target mismatch)"); return; } } /** All error checking is complete now **/ if (curProg->Id == id) { /* binding same program - no change */ return; } /* unbind/delete oldProg */ if (curProg->Id != 0) { /* decrement refcount on previously bound fragment program */ curProg->RefCount--; /* and delete if refcount goes below one */ if (curProg->RefCount <= 0) { /* the program ID was already removed from the hash table */ ctx->Driver.DeleteProgram(ctx, curProg); } } /* bind newProg */ if (target == GL_VERTEX_PROGRAM_ARB) { /* == GL_VERTEX_PROGRAM_NV */ ctx->VertexProgram.Current = (struct gl_vertex_program *) newProg; } else if (target == GL_FRAGMENT_PROGRAM_NV || target == GL_FRAGMENT_PROGRAM_ARB) { ctx->FragmentProgram.Current = (struct gl_fragment_program *) newProg; } newProg->RefCount++; /* Never null pointers */ ASSERT(ctx->VertexProgram.Current); ASSERT(ctx->FragmentProgram.Current); if (ctx->Driver.BindProgram) ctx->Driver.BindProgram(ctx, target, newProg); } /** * Delete a list of programs. * \note Not compiled into display lists. * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB. */ void GLAPIENTRY _mesa_DeletePrograms(GLsizei n, const GLuint *ids) { GLint i; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); if (n < 0) { _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" ); return; } for (i = 0; i < n; i++) { if (ids[i] != 0) { struct gl_program *prog = _mesa_lookup_program(ctx, ids[i]); if (prog == &_mesa_DummyProgram) { _mesa_HashRemove(ctx->Shared->Programs, ids[i]); } else if (prog) { /* Unbind program if necessary */ if (prog->Target == GL_VERTEX_PROGRAM_ARB || /* == GL_VERTEX_PROGRAM_NV */ prog->Target == GL_VERTEX_STATE_PROGRAM_NV) { if (ctx->VertexProgram.Current && ctx->VertexProgram.Current->Base.Id == ids[i]) { /* unbind this currently bound program */ _mesa_BindProgram(prog->Target, 0); } } else if (prog->Target == GL_FRAGMENT_PROGRAM_NV || prog->Target == GL_FRAGMENT_PROGRAM_ARB) { if (ctx->FragmentProgram.Current && ctx->FragmentProgram.Current->Base.Id == ids[i]) { /* unbind this currently bound program */ _mesa_BindProgram(prog->Target, 0); } } else { _mesa_problem(ctx, "bad target in glDeleteProgramsNV"); return; } /* The ID is immediately available for re-use now */ _mesa_HashRemove(ctx->Shared->Programs, ids[i]); prog->RefCount--; if (prog->RefCount <= 0) { ctx->Driver.DeleteProgram(ctx, prog); } } } } } /** * Generate a list of new program identifiers. * \note Not compiled into display lists. * \note Called by both glGenProgramsNV and glGenProgramsARB. */ void GLAPIENTRY _mesa_GenPrograms(GLsizei n, GLuint *ids) { GLuint first; GLuint i; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END(ctx); if (n < 0) { _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms"); return; } if (!ids) return; first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n); /* Insert pointer to dummy program as placeholder */ for (i = 0; i < (GLuint) n; i++) { _mesa_HashInsert(ctx->Shared->Programs, first + i, &_mesa_DummyProgram); } /* Return the program names */ for (i = 0; i < (GLuint) n; i++) { ids[i] = first + i; } } /** * Determine if id names a vertex or fragment program. * \note Not compiled into display lists. * \note Called from both glIsProgramNV and glIsProgramARB. * \param id is the program identifier * \return GL_TRUE if id is a program, else GL_FALSE. */ GLboolean GLAPIENTRY _mesa_IsProgram(GLuint id) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); if (id == 0) return GL_FALSE; if (_mesa_lookup_program(ctx, id)) return GL_TRUE; else return GL_FALSE; } /**********************************************************************/ /* GL_MESA_program_debug extension */ /**********************************************************************/ /* XXX temporary */ GLAPI void GLAPIENTRY glProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback, GLvoid *data) { _mesa_ProgramCallbackMESA(target, callback, data); } void _mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback, GLvoid *data) { GET_CURRENT_CONTEXT(ctx); switch (target) { case GL_FRAGMENT_PROGRAM_ARB: if (!ctx->Extensions.ARB_fragment_program) { _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)"); return; } ctx->FragmentProgram.Callback = callback; ctx->FragmentProgram.CallbackData = data; break; case GL_FRAGMENT_PROGRAM_NV: if (!ctx->Extensions.NV_fragment_program) { _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)"); return; } ctx->FragmentProgram.Callback = callback; ctx->FragmentProgram.CallbackData = data; break; case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */ if (!ctx->Extensions.ARB_vertex_program && !ctx->Extensions.NV_vertex_program) { _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)"); return; } ctx->VertexProgram.Callback = callback; ctx->VertexProgram.CallbackData = data; break; default: _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)"); return; } } /* XXX temporary */ GLAPI void GLAPIENTRY glGetProgramRegisterfvMESA(GLenum target, GLsizei len, const GLubyte *registerName, GLfloat *v) { _mesa_GetProgramRegisterfvMESA(target, len, registerName, v); } void _mesa_GetProgramRegisterfvMESA(GLenum target, GLsizei len, const GLubyte *registerName, GLfloat *v) { char reg[1000]; GET_CURRENT_CONTEXT(ctx); /* We _should_ be inside glBegin/glEnd */ #if 0 if (ctx->Driver.CurrentExecPrimitive == PRIM_OUTSIDE_BEGIN_END) { _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA"); return; } #endif /* make null-terminated copy of registerName */ len = MIN2((unsigned int) len, sizeof(reg) - 1); _mesa_memcpy(reg, registerName, len); reg[len] = 0; switch (target) { case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */ if (!ctx->Extensions.ARB_vertex_program && !ctx->Extensions.NV_vertex_program) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramRegisterfvMESA(target)"); return; } if (!ctx->VertexProgram._Enabled) { _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA"); return; } /* GL_NV_vertex_program */ if (reg[0] == 'R') { /* Temp register */ GLint i = _mesa_atoi(reg + 1); if (i >= (GLint)ctx->Const.VertexProgram.MaxTemps) { _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramRegisterfvMESA(registerName)"); return; } COPY_4V(v, ctx->VertexProgram.Temporaries[i]); } else if (reg[0] == 'v' && reg[1] == '[') { /* Vertex Input attribute */ GLuint i; for (i = 0; i < ctx->Const.VertexProgram.MaxAttribs; i++) { const char *name = _mesa_nv_vertex_input_register_name(i); char number[10]; _mesa_sprintf(number, "%d", i); if (_mesa_strncmp(reg + 2, name, 4) == 0 || _mesa_strncmp(reg + 2, number, _mesa_strlen(number)) == 0) { COPY_4V(v, ctx->VertexProgram.Inputs[i]); return; } } _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramRegisterfvMESA(registerName)"); return; } else if (reg[0] == 'o' && reg[1] == '[') { /* Vertex output attribute */ } /* GL_ARB_vertex_program */ else if (_mesa_strncmp(reg, "vertex.", 7) == 0) { } else { _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramRegisterfvMESA(registerName)"); return; } break; case GL_FRAGMENT_PROGRAM_ARB: if (!ctx->Extensions.ARB_fragment_program) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramRegisterfvMESA(target)"); return; } if (!ctx->FragmentProgram._Enabled) { _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA"); return; } /* XXX to do */ break; case GL_FRAGMENT_PROGRAM_NV: if (!ctx->Extensions.NV_fragment_program) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramRegisterfvMESA(target)"); return; } if (!ctx->FragmentProgram._Enabled) { _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA"); return; } if (reg[0] == 'R') { /* Temp register */ GLint i = _mesa_atoi(reg + 1); if (i >= (GLint)ctx->Const.FragmentProgram.MaxTemps) { _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramRegisterfvMESA(registerName)"); return; } COPY_4V(v, ctx->FragmentProgram.Machine.Temporaries[i]); } else if (reg[0] == 'f' && reg[1] == '[') { /* Fragment input attribute */ GLuint i; for (i = 0; i < ctx->Const.FragmentProgram.MaxAttribs; i++) { const char *name = _mesa_nv_fragment_input_register_name(i); if (_mesa_strncmp(reg + 2, name, 4) == 0) { COPY_4V(v, ctx->FragmentProgram.Machine.Inputs[i]); return; } } _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramRegisterfvMESA(registerName)"); return; } else if (_mesa_strcmp(reg, "o[COLR]") == 0) { /* Fragment output color */ COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_COLR]); } else if (_mesa_strcmp(reg, "o[COLH]") == 0) { /* Fragment output color */ COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_COLH]); } else if (_mesa_strcmp(reg, "o[DEPR]") == 0) { /* Fragment output depth */ COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_DEPR]); } else { /* try user-defined identifiers */ const GLfloat *value = _mesa_lookup_parameter_value( ctx->FragmentProgram.Current->Base.Parameters, -1, reg); if (value) { COPY_4V(v, value); } else { _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramRegisterfvMESA(registerName)"); return; } } break; default: _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramRegisterfvMESA(target)"); return; } }