2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 * Vertex and fragment program support functions.
39 #include "nvfragparse.h"
40 #include "nvfragprog.h"
41 #include "nvvertparse.h"
42 #include "nvvertprog.h"
45 /**********************************************************************/
46 /* Utility functions */
47 /**********************************************************************/
50 /* A pointer to this dummy program is put into the hash table when
51 * glGenPrograms is called.
53 struct program _mesa_DummyProgram;
57 * Init context's vertex/fragment program state
60 _mesa_init_program(GLcontext *ctx)
64 ctx->Program.ErrorPos = -1;
65 ctx->Program.ErrorString = _mesa_strdup("");
67 #if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
68 ctx->VertexProgram.Enabled = GL_FALSE;
69 ctx->VertexProgram.PointSizeEnabled = GL_FALSE;
70 ctx->VertexProgram.TwoSideEnabled = GL_FALSE;
71 ctx->VertexProgram.Current = (struct vertex_program *) ctx->Shared->DefaultVertexProgram;
72 assert(ctx->VertexProgram.Current);
73 ctx->VertexProgram.Current->Base.RefCount++;
74 for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) {
75 ctx->VertexProgram.TrackMatrix[i] = GL_NONE;
76 ctx->VertexProgram.TrackMatrixTransform[i] = GL_IDENTITY_NV;
80 #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
81 ctx->FragmentProgram.Enabled = GL_FALSE;
82 ctx->FragmentProgram.Current = (struct fragment_program *) ctx->Shared->DefaultFragmentProgram;
83 assert(ctx->FragmentProgram.Current);
84 ctx->FragmentProgram.Current->Base.RefCount++;
87 #if FEATURE_ATI_fragment_shader
88 ctx->ATIFragmentShader.Enabled = GL_FALSE;
89 ctx->ATIFragmentShader.Current = (struct ati_fragment_shader *) ctx->Shared->DefaultFragmentShader;
90 assert(ctx->ATIFragmentShader.Current);
91 ctx->ATIFragmentShader.Current->Base.RefCount++;
97 * Free a context's vertex/fragment program state
100 _mesa_free_program_data(GLcontext *ctx)
102 #if FEATURE_NV_vertex_program
103 if (ctx->VertexProgram.Current) {
104 ctx->VertexProgram.Current->Base.RefCount--;
105 if (ctx->VertexProgram.Current->Base.RefCount <= 0)
106 ctx->Driver.DeleteProgram(ctx, &(ctx->VertexProgram.Current->Base));
109 #if FEATURE_NV_fragment_program
110 if (ctx->FragmentProgram.Current) {
111 ctx->FragmentProgram.Current->Base.RefCount--;
112 if (ctx->FragmentProgram.Current->Base.RefCount <= 0)
113 ctx->Driver.DeleteProgram(ctx, &(ctx->FragmentProgram.Current->Base));
116 #if FEATURE_ATI_fragment_shader
117 if (ctx->ATIFragmentShader.Current) {
118 ctx->ATIFragmentShader.Current->Base.RefCount--;
119 if (ctx->ATIFragmentShader.Current->Base.RefCount <= 0)
120 ctx->Driver.DeleteProgram(ctx, &(ctx->ATIFragmentShader.Current->Base));
123 _mesa_free((void *) ctx->Program.ErrorString);
130 * Set the vertex/fragment program error state (position and error string).
131 * This is generally called from within the parsers.
134 _mesa_set_program_error(GLcontext *ctx, GLint pos, const char *string)
136 ctx->Program.ErrorPos = pos;
137 _mesa_free((void *) ctx->Program.ErrorString);
140 ctx->Program.ErrorString = _mesa_strdup(string);
145 * Find the line number and column for 'pos' within 'string'.
146 * Return a copy of the line which contains 'pos'. Free the line with
148 * \param string the program string
149 * \param pos the position within the string
150 * \param line returns the line number corresponding to 'pos'.
151 * \param col returns the column number corresponding to 'pos'.
152 * \return copy of the line containing 'pos'.
155 _mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
156 GLint *line, GLint *col)
158 const GLubyte *lineStart = string;
159 const GLubyte *p = string;
166 if (*p == (GLubyte) '\n') {
173 *col = (pos - lineStart) + 1;
175 /* return copy of this line */
176 while (*p != 0 && *p != '\n')
179 s = (GLubyte *) _mesa_malloc(len + 1);
180 _mesa_memcpy(s, lineStart, len);
188 * Initialize a new vertex/fragment program object.
190 static struct program *
191 _mesa_init_program_struct( GLcontext *ctx, struct program *prog,
192 GLenum target, GLuint id)
197 prog->Target = target;
198 prog->Resident = GL_TRUE;
207 * Initialize a new fragment program object.
210 _mesa_init_fragment_program( GLcontext *ctx, struct fragment_program *prog,
211 GLenum target, GLuint id)
214 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
221 * Initialize a new vertex program object.
224 _mesa_init_vertex_program( GLcontext *ctx, struct vertex_program *prog,
225 GLenum target, GLuint id)
228 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
234 * Initialize a new ATI fragment shader object.
237 _mesa_init_ati_fragment_shader( GLcontext *ctx, struct ati_fragment_shader *prog,
238 GLenum target, GLuint id)
241 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
249 * Allocate and initialize a new fragment/vertex program object but
250 * don't put it into the program hash table. Called via
251 * ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
252 * device driver function to implement OO deriviation with additional
253 * types not understood by this function.
256 * \param id program id/number
257 * \param target program target/type
258 * \return pointer to new program object
261 _mesa_new_program(GLcontext *ctx, GLenum target, GLuint id)
264 case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
265 return _mesa_init_vertex_program( ctx, CALLOC_STRUCT(vertex_program),
267 case GL_FRAGMENT_PROGRAM_NV:
268 case GL_FRAGMENT_PROGRAM_ARB:
269 return _mesa_init_fragment_program( ctx, CALLOC_STRUCT(fragment_program),
271 case GL_FRAGMENT_SHADER_ATI:
272 return _mesa_init_ati_fragment_shader( ctx, CALLOC_STRUCT(ati_fragment_shader),
276 _mesa_problem(ctx, "bad target in _mesa_new_program");
283 * Delete a program and remove it from the hash table, ignoring the
285 * Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
286 * by a device driver function.
289 _mesa_delete_program(GLcontext *ctx, struct program *prog)
295 _mesa_free(prog->String);
296 if (prog->Target == GL_VERTEX_PROGRAM_NV ||
297 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
298 struct vertex_program *vprog = (struct vertex_program *) prog;
299 if (vprog->Instructions) {
301 for (i = 0; i < vprog->Base.NumInstructions; i++) {
302 if (vprog->Instructions[i].Data)
303 _mesa_free(vprog->Instructions[i].Data);
305 _mesa_free(vprog->Instructions);
307 if (vprog->Parameters)
308 _mesa_free_parameter_list(vprog->Parameters);
310 else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
311 prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
312 struct fragment_program *fprog = (struct fragment_program *) prog;
313 if (fprog->Instructions) {
315 for (i = 0; i < fprog->Base.NumInstructions; i++) {
316 if (fprog->Instructions[i].Data)
317 _mesa_free(fprog->Instructions[i].Data);
319 _mesa_free(fprog->Instructions);
321 if (fprog->Parameters)
322 _mesa_free_parameter_list(fprog->Parameters);
324 else if (prog->Target == GL_FRAGMENT_SHADER_ATI) {
325 struct ati_fragment_shader *atifs = (struct ati_fragment_shader *)prog;
326 if (atifs->Instructions)
327 _mesa_free(atifs->Instructions);
335 /**********************************************************************/
336 /* Program parameter functions */
337 /**********************************************************************/
339 struct program_parameter_list *
340 _mesa_new_parameter_list(void)
342 return (struct program_parameter_list *)
343 _mesa_calloc(sizeof(struct program_parameter_list));
348 * Free a parameter list and all its parameters
351 _mesa_free_parameter_list(struct program_parameter_list *paramList)
353 _mesa_free_parameters(paramList);
354 _mesa_free(paramList);
359 * Free all the parameters in the given list, but don't free the
360 * paramList structure itself.
363 _mesa_free_parameters(struct program_parameter_list *paramList)
366 for (i = 0; i < paramList->NumParameters; i++) {
367 _mesa_free((void *) paramList->Parameters[i].Name);
369 _mesa_free(paramList->Parameters);
370 paramList->NumParameters = 0;
371 paramList->Parameters = NULL;
376 * Helper function used by the functions below.
379 add_parameter(struct program_parameter_list *paramList,
380 const char *name, const GLfloat values[4],
381 enum parameter_type type)
383 const GLuint n = paramList->NumParameters;
385 paramList->Parameters = (struct program_parameter *)
386 _mesa_realloc(paramList->Parameters,
387 n * sizeof(struct program_parameter),
388 (n + 1) * sizeof(struct program_parameter));
389 if (!paramList->Parameters) {
391 paramList->NumParameters = 0;
395 paramList->NumParameters = n + 1;
396 paramList->Parameters[n].Name = _mesa_strdup(name);
397 paramList->Parameters[n].Type = type;
399 COPY_4V(paramList->Parameters[n].Values, values);
406 * Add a new named program parameter (Ex: NV_fragment_program DEFINE statement)
407 * \return index of the new entry in the parameter list
410 _mesa_add_named_parameter(struct program_parameter_list *paramList,
411 const char *name, const GLfloat values[4])
413 return add_parameter(paramList, name, values, NAMED_PARAMETER);
418 * Add a new unnamed constant to the parameter list.
419 * \param paramList - the parameter list
420 * \param values - four float values
421 * \return index of the new parameter.
424 _mesa_add_named_constant(struct program_parameter_list *paramList,
425 const char *name, const GLfloat values[4])
427 return add_parameter(paramList, name, values, CONSTANT);
432 * Add a new unnamed constant to the parameter list.
433 * \param paramList - the parameter list
434 * \param values - four float values
435 * \return index of the new parameter.
438 _mesa_add_unnamed_constant(struct program_parameter_list *paramList,
439 const GLfloat values[4])
441 /* generate a new dummy name */
444 _mesa_sprintf(name, "constant%d", n);
447 return add_parameter(paramList, name, values, CONSTANT);
452 * Add a new state reference to the parameter list.
453 * \param paramList - the parameter list
454 * \param state - an array of 6 state tokens
456 * \return index of the new parameter.
459 _mesa_add_state_reference(struct program_parameter_list *paramList,
462 /* XXX Should we parse <stateString> here and produce the parameter's
463 * list of STATE_* tokens here, or in the parser?
467 idx = add_parameter(paramList, "Some State", NULL, STATE);
470 paramList->Parameters[idx].StateIndexes[a] = (enum state_index) stateTokens[a];
477 * Lookup a parameter value by name in the given parameter list.
478 * \return pointer to the float[4] values.
481 _mesa_lookup_parameter_value(struct program_parameter_list *paramList,
482 GLsizei nameLen, const char *name)
490 /* name is null-terminated */
491 for (i = 0; i < paramList->NumParameters; i++) {
492 if (_mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
493 return paramList->Parameters[i].Values;
497 /* name is not null-terminated, use nameLen */
498 for (i = 0; i < paramList->NumParameters; i++) {
499 if (_mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
500 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
501 return paramList->Parameters[i].Values;
509 * Lookup a parameter index by name in the given parameter list.
510 * \return index of parameter in the list.
513 _mesa_lookup_parameter_index(struct program_parameter_list *paramList,
514 GLsizei nameLen, const char *name)
522 /* name is null-terminated */
523 for (i = 0; i < (GLint) paramList->NumParameters; i++) {
524 if (_mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
529 /* name is not null-terminated, use nameLen */
530 for (i = 0; i < (GLint) paramList->NumParameters; i++) {
531 if (_mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
532 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
541 * Use the list of tokens in the state[] array to find global GL state
542 * and return it in <value>. Usually, four values are returned in <value>
543 * but matrix queries may return as many as 16 values.
544 * This function is used for ARB vertex/fragment programs.
545 * The program parser will produce the state[] values.
548 _mesa_fetch_state(GLcontext *ctx, const enum state_index state[],
554 /* state[1] is either 0=front or 1=back side */
555 const GLuint face = (GLuint) state[1];
556 /* state[2] is the material attribute */
560 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT]);
562 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT]);
566 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE]);
568 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE]);
572 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR]);
574 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SPECULAR]);
578 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION]);
580 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION]);
582 case STATE_SHININESS:
584 value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];
586 value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0];
592 _mesa_problem(ctx, "Invalid material state in fetch_state");
598 /* state[1] is the light number */
599 const GLuint ln = (GLuint) state[1];
600 /* state[2] is the light attribute */
603 COPY_4V(value, ctx->Light.Light[ln].Ambient);
606 COPY_4V(value, ctx->Light.Light[ln].Diffuse);
609 COPY_4V(value, ctx->Light.Light[ln].Specular);
612 COPY_4V(value, ctx->Light.Light[ln].EyePosition);
614 case STATE_ATTENUATION:
615 value[0] = ctx->Light.Light[ln].ConstantAttenuation;
616 value[1] = ctx->Light.Light[ln].LinearAttenuation;
617 value[2] = ctx->Light.Light[ln].QuadraticAttenuation;
618 value[3] = ctx->Light.Light[ln].SpotExponent;
620 case STATE_SPOT_DIRECTION:
621 COPY_4V(value, ctx->Light.Light[ln].EyeDirection);
625 GLfloat eye_z[] = {0, 0, 1};
627 /* Compute infinite half angle vector:
628 * half-vector = light_position + (0, 0, 1)
629 * and then normalize. w = 0
631 * light.EyePosition.w should be 0 for infinite lights.
633 ADD_3V(value, eye_z, ctx->Light.Light[ln].EyePosition);
634 NORMALIZE_3FV(value);
639 _mesa_problem(ctx, "Invalid light state in fetch_state");
643 case STATE_LIGHTMODEL_AMBIENT:
644 COPY_4V(value, ctx->Light.Model.Ambient);
646 case STATE_LIGHTMODEL_SCENECOLOR:
650 for (i = 0; i < 4; i++) {
651 value[i] = ctx->Light.Model.Ambient[i]
652 * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT][i]
653 + ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION][i];
659 for (i = 0; i < 4; i++) {
660 value[i] = ctx->Light.Model.Ambient[i]
661 * ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT][i]
662 + ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION][i];
666 case STATE_LIGHTPROD:
668 const GLuint ln = (GLuint) state[1];
669 const GLuint face = (GLuint) state[2];
671 ASSERT(face == 0 || face == 1);
674 for (i = 0; i < 3; i++) {
675 value[i] = ctx->Light.Light[ln].Ambient[i] *
676 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i];
678 /* [3] = material alpha */
679 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
682 for (i = 0; i < 3; i++) {
683 value[i] = ctx->Light.Light[ln].Diffuse[i] *
684 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i];
686 /* [3] = material alpha */
687 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
690 for (i = 0; i < 3; i++) {
691 value[i] = ctx->Light.Light[ln].Specular[i] *
692 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i];
694 /* [3] = material alpha */
695 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
698 _mesa_problem(ctx, "Invalid lightprod state in fetch_state");
704 /* state[1] is the texture unit */
705 const GLuint unit = (GLuint) state[1];
706 /* state[2] is the texgen attribute */
708 case STATE_TEXGEN_EYE_S:
709 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneS);
711 case STATE_TEXGEN_EYE_T:
712 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneT);
714 case STATE_TEXGEN_EYE_R:
715 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneR);
717 case STATE_TEXGEN_EYE_Q:
718 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneQ);
720 case STATE_TEXGEN_OBJECT_S:
721 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneS);
723 case STATE_TEXGEN_OBJECT_T:
724 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneT);
726 case STATE_TEXGEN_OBJECT_R:
727 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneR);
729 case STATE_TEXGEN_OBJECT_Q:
730 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneQ);
733 _mesa_problem(ctx, "Invalid texgen state in fetch_state");
737 case STATE_TEXENV_COLOR:
739 /* state[1] is the texture unit */
740 const GLuint unit = (GLuint) state[1];
741 COPY_4V(value, ctx->Texture.Unit[unit].EnvColor);
744 case STATE_FOG_COLOR:
745 COPY_4V(value, ctx->Fog.Color);
747 case STATE_FOG_PARAMS:
748 value[0] = ctx->Fog.Density;
749 value[1] = ctx->Fog.Start;
750 value[2] = ctx->Fog.End;
751 value[3] = 1.0F / (ctx->Fog.End - ctx->Fog.Start);
753 case STATE_CLIPPLANE:
755 const GLuint plane = (GLuint) state[1];
756 COPY_4V(value, ctx->Transform.EyeUserPlane[plane]);
759 case STATE_POINT_SIZE:
760 value[0] = ctx->Point.Size;
761 value[1] = ctx->Point.MinSize;
762 value[2] = ctx->Point.MaxSize;
763 value[3] = ctx->Point.Threshold;
765 case STATE_POINT_ATTENUATION:
766 value[0] = ctx->Point.Params[0];
767 value[1] = ctx->Point.Params[1];
768 value[2] = ctx->Point.Params[2];
773 /* state[1] = modelview, projection, texture, etc. */
774 /* state[2] = which texture matrix or program matrix */
775 /* state[3] = first column to fetch */
776 /* state[4] = last column to fetch */
777 /* state[5] = transpose, inverse or invtrans */
779 const GLmatrix *matrix;
780 const enum state_index mat = state[1];
781 const GLuint index = (GLuint) state[2];
782 const GLuint first = (GLuint) state[3];
783 const GLuint last = (GLuint) state[4];
784 const enum state_index modifier = state[5];
787 if (mat == STATE_MODELVIEW) {
788 matrix = ctx->ModelviewMatrixStack.Top;
790 else if (mat == STATE_PROJECTION) {
791 matrix = ctx->ProjectionMatrixStack.Top;
793 else if (mat == STATE_MVP) {
794 matrix = &ctx->_ModelProjectMatrix;
796 else if (mat == STATE_TEXTURE) {
797 matrix = ctx->TextureMatrixStack[index].Top;
799 else if (mat == STATE_PROGRAM) {
800 matrix = ctx->ProgramMatrixStack[index].Top;
803 _mesa_problem(ctx, "Bad matrix name in _mesa_fetch_state()");
806 if (modifier == STATE_MATRIX_INVERSE ||
807 modifier == STATE_MATRIX_INVTRANS) {
808 /* XXX be sure inverse is up to date */
814 if (modifier == STATE_MATRIX_TRANSPOSE ||
815 modifier == STATE_MATRIX_INVTRANS) {
816 for (i = 0, row = first; row <= last; row++) {
817 value[i++] = m[row * 4 + 0];
818 value[i++] = m[row * 4 + 1];
819 value[i++] = m[row * 4 + 2];
820 value[i++] = m[row * 4 + 3];
824 for (i = 0, row = first; row <= last; row++) {
825 value[i++] = m[row + 0];
826 value[i++] = m[row + 4];
827 value[i++] = m[row + 8];
828 value[i++] = m[row + 12];
833 case STATE_DEPTH_RANGE:
834 value[0] = ctx->Viewport.Near; /* near */
835 value[1] = ctx->Viewport.Far; /* far */
836 value[2] = ctx->Viewport.Far - ctx->Viewport.Near; /* far - near */
839 case STATE_FRAGMENT_PROGRAM:
841 /* state[1] = {STATE_ENV, STATE_LOCAL} */
842 /* state[2] = parameter index */
843 const int idx = (int) state[2];
846 COPY_4V(value, ctx->FragmentProgram.Parameters[idx]);
849 COPY_4V(value, ctx->FragmentProgram.Current->Base.LocalParams[idx]);
852 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
858 case STATE_VERTEX_PROGRAM:
860 /* state[1] = {STATE_ENV, STATE_LOCAL} */
861 /* state[2] = parameter index */
862 const int idx = (int) state[2];
865 COPY_4V(value, ctx->VertexProgram.Parameters[idx]);
868 COPY_4V(value, ctx->VertexProgram.Current->Base.LocalParams[idx]);
871 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
877 _mesa_problem(ctx, "Invalid state in _mesa_fetch_state");
884 * Loop over all the parameters in a parameter list. If the parameter
885 * is a GL state reference, look up the current value of that state
886 * variable and put it into the parameter's Value[4] array.
887 * This would be called at glBegin time when using a fragment program.
890 _mesa_load_state_parameters(GLcontext *ctx,
891 struct program_parameter_list *paramList)
898 for (i = 0; i < paramList->NumParameters; i++) {
899 if (paramList->Parameters[i].Type == STATE) {
900 _mesa_fetch_state(ctx, paramList->Parameters[i].StateIndexes,
901 paramList->Parameters[i].Values);
908 /**********************************************************************/
910 /**********************************************************************/
914 * Bind a program (make it current)
915 * \note Called from the GL API dispatcher by both glBindProgramNV
916 * and glBindProgramARB.
919 _mesa_BindProgram(GLenum target, GLuint id)
921 struct program *prog;
922 GET_CURRENT_CONTEXT(ctx);
923 ASSERT_OUTSIDE_BEGIN_END(ctx);
925 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
927 if ((target == GL_VERTEX_PROGRAM_NV
928 && ctx->Extensions.NV_vertex_program) ||
929 (target == GL_VERTEX_PROGRAM_ARB
930 && ctx->Extensions.ARB_vertex_program)) {
931 /*** Vertex program binding ***/
932 struct vertex_program *curProg = ctx->VertexProgram.Current;
933 if (curProg->Base.Id == id) {
934 /* binding same program - no change */
937 if (curProg->Base.Id != 0) {
938 /* decrement refcount on previously bound vertex program */
939 curProg->Base.RefCount--;
940 /* and delete if refcount goes below one */
941 if (curProg->Base.RefCount <= 0) {
942 ASSERT(curProg->Base.DeletePending);
943 ctx->Driver.DeleteProgram(ctx, &(curProg->Base));
944 _mesa_HashRemove(ctx->Shared->Programs, id);
948 else if ((target == GL_FRAGMENT_PROGRAM_NV
949 && ctx->Extensions.NV_fragment_program) ||
950 (target == GL_FRAGMENT_PROGRAM_ARB
951 && ctx->Extensions.ARB_fragment_program)) {
952 /*** Fragment program binding ***/
953 struct fragment_program *curProg = ctx->FragmentProgram.Current;
954 if (curProg->Base.Id == id) {
955 /* binding same program - no change */
958 if (curProg->Base.Id != 0) {
959 /* decrement refcount on previously bound fragment program */
960 curProg->Base.RefCount--;
961 /* and delete if refcount goes below one */
962 if (curProg->Base.RefCount <= 0) {
963 ASSERT(curProg->Base.DeletePending);
964 ctx->Driver.DeleteProgram(ctx, &(curProg->Base));
965 _mesa_HashRemove(ctx->Shared->Programs, id);
970 _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramNV/ARB(target)");
974 /* NOTE: binding to a non-existant program is not an error.
975 * That's supposed to be caught in glBegin.
978 /* Bind default program */
980 if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB)
981 prog = ctx->Shared->DefaultVertexProgram;
983 prog = ctx->Shared->DefaultFragmentProgram;
986 /* Bind user program */
987 prog = (struct program *) _mesa_HashLookup(ctx->Shared->Programs, id);
988 if (!prog || prog == &_mesa_DummyProgram) {
989 /* allocate a new program now */
990 prog = ctx->Driver.NewProgram(ctx, target, id);
992 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramNV/ARB");
995 _mesa_HashInsert(ctx->Shared->Programs, id, prog);
997 else if (prog->Target != target) {
998 _mesa_error(ctx, GL_INVALID_OPERATION,
999 "glBindProgramNV/ARB(target mismatch)");
1005 if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB) {
1006 ctx->VertexProgram.Current = (struct vertex_program *) prog;
1008 else if (target == GL_FRAGMENT_PROGRAM_NV || target == GL_FRAGMENT_PROGRAM_ARB) {
1009 ctx->FragmentProgram.Current = (struct fragment_program *) prog;
1012 /* Never null pointers */
1013 ASSERT(ctx->VertexProgram.Current);
1014 ASSERT(ctx->FragmentProgram.Current);
1019 if (ctx->Driver.BindProgram)
1020 ctx->Driver.BindProgram(ctx, target, prog);
1025 * Delete a list of programs.
1026 * \note Not compiled into display lists.
1027 * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
1030 _mesa_DeletePrograms(GLsizei n, const GLuint *ids)
1033 GET_CURRENT_CONTEXT(ctx);
1034 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1037 _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
1041 for (i = 0; i < n; i++) {
1043 struct program *prog = (struct program *)
1044 _mesa_HashLookup(ctx->Shared->Programs, ids[i]);
1045 if (prog == &_mesa_DummyProgram) {
1046 _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
1049 /* Unbind program if necessary */
1050 if (prog->Target == GL_VERTEX_PROGRAM_NV ||
1051 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
1052 if (ctx->VertexProgram.Current &&
1053 ctx->VertexProgram.Current->Base.Id == ids[i]) {
1054 /* unbind this currently bound program */
1055 _mesa_BindProgram(prog->Target, 0);
1058 else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
1059 prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
1060 if (ctx->FragmentProgram.Current &&
1061 ctx->FragmentProgram.Current->Base.Id == ids[i]) {
1062 /* unbind this currently bound program */
1063 _mesa_BindProgram(prog->Target, 0);
1067 _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
1070 /* Decrement reference count if not already marked for delete */
1071 if (!prog->DeletePending) {
1072 prog->DeletePending = GL_TRUE;
1075 if (prog->RefCount <= 0) {
1076 _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
1077 ctx->Driver.DeleteProgram(ctx, prog);
1086 * Generate a list of new program identifiers.
1087 * \note Not compiled into display lists.
1088 * \note Called by both glGenProgramsNV and glGenProgramsARB.
1091 _mesa_GenPrograms(GLsizei n, GLuint *ids)
1095 GET_CURRENT_CONTEXT(ctx);
1096 ASSERT_OUTSIDE_BEGIN_END(ctx);
1099 _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
1106 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
1108 /* Insert pointer to dummy program as placeholder */
1109 for (i = 0; i < (GLuint) n; i++) {
1110 _mesa_HashInsert(ctx->Shared->Programs, first + i, &_mesa_DummyProgram);
1113 /* Return the program names */
1114 for (i = 0; i < (GLuint) n; i++) {
1121 * Determine if id names a vertex or fragment program.
1122 * \note Not compiled into display lists.
1123 * \note Called from both glIsProgramNV and glIsProgramARB.
1124 * \param id is the program identifier
1125 * \return GL_TRUE if id is a program, else GL_FALSE.
1127 GLboolean GLAPIENTRY
1128 _mesa_IsProgram(GLuint id)
1130 GET_CURRENT_CONTEXT(ctx);
1131 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1136 if (_mesa_HashLookup(ctx->Shared->Programs, id))
1144 /**********************************************************************/
1145 /* GL_MESA_program_debug extension */
1146 /**********************************************************************/
1151 glProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
1154 _mesa_ProgramCallbackMESA(target, callback, data);
1159 _mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
1162 GET_CURRENT_CONTEXT(ctx);
1165 case GL_FRAGMENT_PROGRAM_ARB:
1166 if (!ctx->Extensions.ARB_fragment_program) {
1167 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1170 ctx->FragmentProgram.Callback = callback;
1171 ctx->FragmentProgram.CallbackData = data;
1173 case GL_FRAGMENT_PROGRAM_NV:
1174 if (!ctx->Extensions.NV_fragment_program) {
1175 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1178 ctx->FragmentProgram.Callback = callback;
1179 ctx->FragmentProgram.CallbackData = data;
1181 case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
1182 if (!ctx->Extensions.ARB_vertex_program &&
1183 !ctx->Extensions.NV_vertex_program) {
1184 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1187 ctx->VertexProgram.Callback = callback;
1188 ctx->VertexProgram.CallbackData = data;
1191 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1199 glGetProgramRegisterfvMESA(GLenum target,
1200 GLsizei len, const GLubyte *registerName,
1203 _mesa_GetProgramRegisterfvMESA(target, len, registerName, v);
1208 _mesa_GetProgramRegisterfvMESA(GLenum target,
1209 GLsizei len, const GLubyte *registerName,
1213 GET_CURRENT_CONTEXT(ctx);
1215 /* We _should_ be inside glBegin/glEnd */
1217 if (ctx->Driver.CurrentExecPrimitive == PRIM_OUTSIDE_BEGIN_END) {
1218 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA");
1223 /* make null-terminated copy of registerName */
1224 len = MIN2((unsigned int) len, sizeof(reg) - 1);
1225 _mesa_memcpy(reg, registerName, len);
1229 case GL_VERTEX_PROGRAM_NV:
1230 if (!ctx->Extensions.ARB_vertex_program &&
1231 !ctx->Extensions.NV_vertex_program) {
1232 _mesa_error(ctx, GL_INVALID_ENUM,
1233 "glGetProgramRegisterfvMESA(target)");
1236 if (!ctx->VertexProgram._Enabled) {
1237 _mesa_error(ctx, GL_INVALID_OPERATION,
1238 "glGetProgramRegisterfvMESA");
1241 /* GL_NV_vertex_program */
1242 if (reg[0] == 'R') {
1244 GLint i = _mesa_atoi(reg + 1);
1245 if (i >= (GLint)ctx->Const.MaxVertexProgramTemps) {
1246 _mesa_error(ctx, GL_INVALID_VALUE,
1247 "glGetProgramRegisterfvMESA(registerName)");
1250 COPY_4V(v, ctx->VertexProgram.Temporaries[i]);
1252 else if (reg[0] == 'v' && reg[1] == '[') {
1253 /* Vertex Input attribute */
1255 for (i = 0; i < ctx->Const.MaxVertexProgramAttribs; i++) {
1256 const char *name = _mesa_nv_vertex_input_register_name(i);
1258 sprintf(number, "%d", i);
1259 if (_mesa_strncmp(reg + 2, name, 4) == 0 ||
1260 _mesa_strncmp(reg + 2, number, _mesa_strlen(number)) == 0) {
1261 COPY_4V(v, ctx->VertexProgram.Inputs[i]);
1265 _mesa_error(ctx, GL_INVALID_VALUE,
1266 "glGetProgramRegisterfvMESA(registerName)");
1269 else if (reg[0] == 'o' && reg[1] == '[') {
1270 /* Vertex output attribute */
1272 /* GL_ARB_vertex_program */
1273 else if (_mesa_strncmp(reg, "vertex.", 7) == 0) {
1277 _mesa_error(ctx, GL_INVALID_VALUE,
1278 "glGetProgramRegisterfvMESA(registerName)");
1282 case GL_FRAGMENT_PROGRAM_ARB:
1283 if (!ctx->Extensions.ARB_fragment_program) {
1284 _mesa_error(ctx, GL_INVALID_ENUM,
1285 "glGetProgramRegisterfvMESA(target)");
1288 if (!ctx->FragmentProgram._Enabled) {
1289 _mesa_error(ctx, GL_INVALID_OPERATION,
1290 "glGetProgramRegisterfvMESA");
1295 case GL_FRAGMENT_PROGRAM_NV:
1296 if (!ctx->Extensions.NV_fragment_program) {
1297 _mesa_error(ctx, GL_INVALID_ENUM,
1298 "glGetProgramRegisterfvMESA(target)");
1301 if (!ctx->FragmentProgram._Enabled) {
1302 _mesa_error(ctx, GL_INVALID_OPERATION,
1303 "glGetProgramRegisterfvMESA");
1306 if (reg[0] == 'R') {
1308 GLint i = _mesa_atoi(reg + 1);
1309 if (i >= (GLint)ctx->Const.MaxFragmentProgramTemps) {
1310 _mesa_error(ctx, GL_INVALID_VALUE,
1311 "glGetProgramRegisterfvMESA(registerName)");
1314 COPY_4V(v, ctx->FragmentProgram.Machine.Temporaries[i]);
1316 else if (reg[0] == 'f' && reg[1] == '[') {
1317 /* Fragment input attribute */
1319 for (i = 0; i < ctx->Const.MaxFragmentProgramAttribs; i++) {
1320 const char *name = _mesa_nv_fragment_input_register_name(i);
1321 if (_mesa_strncmp(reg + 2, name, 4) == 0) {
1322 COPY_4V(v, ctx->FragmentProgram.Machine.Inputs[i]);
1326 _mesa_error(ctx, GL_INVALID_VALUE,
1327 "glGetProgramRegisterfvMESA(registerName)");
1330 else if (_mesa_strcmp(reg, "o[COLR]") == 0) {
1331 /* Fragment output color */
1332 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_COLR]);
1334 else if (_mesa_strcmp(reg, "o[COLH]") == 0) {
1335 /* Fragment output color */
1336 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_COLH]);
1338 else if (_mesa_strcmp(reg, "o[DEPR]") == 0) {
1339 /* Fragment output depth */
1340 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_DEPR]);
1343 /* try user-defined identifiers */
1344 const GLfloat *value = _mesa_lookup_parameter_value(
1345 ctx->FragmentProgram.Current->Parameters, -1, reg);
1350 _mesa_error(ctx, GL_INVALID_VALUE,
1351 "glGetProgramRegisterfvMESA(registerName)");
1357 _mesa_error(ctx, GL_INVALID_ENUM,
1358 "glGetProgramRegisterfvMESA(target)");