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,
238 struct ati_fragment_shader *prog,
239 GLenum target, GLuint id )
242 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
250 * Allocate and initialize a new fragment/vertex program object but
251 * don't put it into the program hash table. Called via
252 * ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
253 * device driver function to implement OO deriviation with additional
254 * types not understood by this function.
257 * \param id program id/number
258 * \param target program target/type
259 * \return pointer to new program object
262 _mesa_new_program(GLcontext *ctx, GLenum target, GLuint id)
265 case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
266 return _mesa_init_vertex_program( ctx, CALLOC_STRUCT(vertex_program),
268 case GL_FRAGMENT_PROGRAM_NV:
269 case GL_FRAGMENT_PROGRAM_ARB:
270 return _mesa_init_fragment_program( ctx, CALLOC_STRUCT(fragment_program),
272 case GL_FRAGMENT_SHADER_ATI:
273 return _mesa_init_ati_fragment_shader( ctx, CALLOC_STRUCT(ati_fragment_shader),
277 _mesa_problem(ctx, "bad target in _mesa_new_program");
284 * Delete a program and remove it from the hash table, ignoring the
286 * Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
287 * by a device driver function.
290 _mesa_delete_program(GLcontext *ctx, struct program *prog)
296 _mesa_free(prog->String);
297 if (prog->Target == GL_VERTEX_PROGRAM_NV ||
298 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
299 struct vertex_program *vprog = (struct vertex_program *) prog;
300 if (vprog->Instructions) {
302 for (i = 0; i < vprog->Base.NumInstructions; i++) {
303 if (vprog->Instructions[i].Data)
304 _mesa_free(vprog->Instructions[i].Data);
306 _mesa_free(vprog->Instructions);
308 if (vprog->Parameters)
309 _mesa_free_parameter_list(vprog->Parameters);
311 else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
312 prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
313 struct fragment_program *fprog = (struct fragment_program *) prog;
314 if (fprog->Instructions) {
316 for (i = 0; i < fprog->Base.NumInstructions; i++) {
317 if (fprog->Instructions[i].Data)
318 _mesa_free(fprog->Instructions[i].Data);
320 _mesa_free(fprog->Instructions);
322 if (fprog->Parameters)
323 _mesa_free_parameter_list(fprog->Parameters);
325 else if (prog->Target == GL_FRAGMENT_SHADER_ATI) {
326 struct ati_fragment_shader *atifs = (struct ati_fragment_shader *)prog;
327 if (atifs->Instructions)
328 _mesa_free(atifs->Instructions);
336 /**********************************************************************/
337 /* Program parameter functions */
338 /**********************************************************************/
340 struct program_parameter_list *
341 _mesa_new_parameter_list(void)
343 return (struct program_parameter_list *)
344 _mesa_calloc(sizeof(struct program_parameter_list));
349 * Free a parameter list and all its parameters
352 _mesa_free_parameter_list(struct program_parameter_list *paramList)
354 _mesa_free_parameters(paramList);
355 _mesa_free(paramList);
360 * Free all the parameters in the given list, but don't free the
361 * paramList structure itself.
364 _mesa_free_parameters(struct program_parameter_list *paramList)
367 for (i = 0; i < paramList->NumParameters; i++) {
368 _mesa_free((void *) paramList->Parameters[i].Name);
370 _mesa_free(paramList->Parameters);
371 paramList->NumParameters = 0;
372 paramList->Parameters = NULL;
377 * Helper function used by the functions below.
380 add_parameter(struct program_parameter_list *paramList,
381 const char *name, const GLfloat values[4],
382 enum parameter_type type)
384 const GLuint n = paramList->NumParameters;
386 paramList->Parameters = (struct program_parameter *)
387 _mesa_realloc(paramList->Parameters,
388 n * sizeof(struct program_parameter),
389 (n + 1) * sizeof(struct program_parameter));
390 if (!paramList->Parameters) {
392 paramList->NumParameters = 0;
396 paramList->NumParameters = n + 1;
397 paramList->Parameters[n].Name = _mesa_strdup(name);
398 paramList->Parameters[n].Type = type;
400 COPY_4V(paramList->Parameters[n].Values, values);
407 * Add a new named program parameter (Ex: NV_fragment_program DEFINE statement)
408 * \return index of the new entry in the parameter list
411 _mesa_add_named_parameter(struct program_parameter_list *paramList,
412 const char *name, const GLfloat values[4])
414 return add_parameter(paramList, name, values, NAMED_PARAMETER);
419 * Add a new unnamed constant to the parameter list.
420 * \param paramList - the parameter list
421 * \param values - four float values
422 * \return index of the new parameter.
425 _mesa_add_named_constant(struct program_parameter_list *paramList,
426 const char *name, const GLfloat values[4])
428 return add_parameter(paramList, name, values, CONSTANT);
433 * Add a new unnamed constant to the parameter list.
434 * \param paramList - the parameter list
435 * \param values - four float values
436 * \return index of the new parameter.
439 _mesa_add_unnamed_constant(struct program_parameter_list *paramList,
440 const GLfloat values[4])
442 /* generate a new dummy name */
445 _mesa_sprintf(name, "constant%d", n);
448 return add_parameter(paramList, name, values, CONSTANT);
453 * Add a new state reference to the parameter list.
454 * \param paramList - the parameter list
455 * \param state - an array of 6 state tokens
457 * \return index of the new parameter.
460 _mesa_add_state_reference(struct program_parameter_list *paramList,
463 /* XXX Should we parse <stateString> here and produce the parameter's
464 * list of STATE_* tokens here, or in the parser?
468 idx = add_parameter(paramList, "Some State", NULL, STATE);
471 paramList->Parameters[idx].StateIndexes[a] = (enum state_index) stateTokens[a];
478 * Lookup a parameter value by name in the given parameter list.
479 * \return pointer to the float[4] values.
482 _mesa_lookup_parameter_value(struct program_parameter_list *paramList,
483 GLsizei nameLen, const char *name)
491 /* name is null-terminated */
492 for (i = 0; i < paramList->NumParameters; i++) {
493 if (_mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
494 return paramList->Parameters[i].Values;
498 /* name is not null-terminated, use nameLen */
499 for (i = 0; i < paramList->NumParameters; i++) {
500 if (_mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
501 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
502 return paramList->Parameters[i].Values;
510 * Lookup a parameter index by name in the given parameter list.
511 * \return index of parameter in the list.
514 _mesa_lookup_parameter_index(struct program_parameter_list *paramList,
515 GLsizei nameLen, const char *name)
523 /* name is null-terminated */
524 for (i = 0; i < (GLint) paramList->NumParameters; i++) {
525 if (_mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
530 /* name is not null-terminated, use nameLen */
531 for (i = 0; i < (GLint) paramList->NumParameters; i++) {
532 if (_mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
533 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
542 * Use the list of tokens in the state[] array to find global GL state
543 * and return it in <value>. Usually, four values are returned in <value>
544 * but matrix queries may return as many as 16 values.
545 * This function is used for ARB vertex/fragment programs.
546 * The program parser will produce the state[] values.
549 _mesa_fetch_state(GLcontext *ctx, const enum state_index state[],
555 /* state[1] is either 0=front or 1=back side */
556 const GLuint face = (GLuint) state[1];
557 /* state[2] is the material attribute */
561 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT]);
563 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT]);
567 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE]);
569 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE]);
573 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR]);
575 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SPECULAR]);
579 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION]);
581 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION]);
583 case STATE_SHININESS:
585 value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];
587 value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0];
593 _mesa_problem(ctx, "Invalid material state in fetch_state");
599 /* state[1] is the light number */
600 const GLuint ln = (GLuint) state[1];
601 /* state[2] is the light attribute */
604 COPY_4V(value, ctx->Light.Light[ln].Ambient);
607 COPY_4V(value, ctx->Light.Light[ln].Diffuse);
610 COPY_4V(value, ctx->Light.Light[ln].Specular);
613 COPY_4V(value, ctx->Light.Light[ln].EyePosition);
615 case STATE_ATTENUATION:
616 value[0] = ctx->Light.Light[ln].ConstantAttenuation;
617 value[1] = ctx->Light.Light[ln].LinearAttenuation;
618 value[2] = ctx->Light.Light[ln].QuadraticAttenuation;
619 value[3] = ctx->Light.Light[ln].SpotExponent;
621 case STATE_SPOT_DIRECTION:
622 COPY_4V(value, ctx->Light.Light[ln].EyeDirection);
626 GLfloat eye_z[] = {0, 0, 1};
628 /* Compute infinite half angle vector:
629 * half-vector = light_position + (0, 0, 1)
630 * and then normalize. w = 0
632 * light.EyePosition.w should be 0 for infinite lights.
634 ADD_3V(value, eye_z, ctx->Light.Light[ln].EyePosition);
635 NORMALIZE_3FV(value);
640 _mesa_problem(ctx, "Invalid light state in fetch_state");
644 case STATE_LIGHTMODEL_AMBIENT:
645 COPY_4V(value, ctx->Light.Model.Ambient);
647 case STATE_LIGHTMODEL_SCENECOLOR:
651 for (i = 0; i < 4; i++) {
652 value[i] = ctx->Light.Model.Ambient[i]
653 * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT][i]
654 + ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION][i];
660 for (i = 0; i < 4; i++) {
661 value[i] = ctx->Light.Model.Ambient[i]
662 * ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT][i]
663 + ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION][i];
667 case STATE_LIGHTPROD:
669 const GLuint ln = (GLuint) state[1];
670 const GLuint face = (GLuint) state[2];
672 ASSERT(face == 0 || face == 1);
675 for (i = 0; i < 3; i++) {
676 value[i] = ctx->Light.Light[ln].Ambient[i] *
677 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i];
679 /* [3] = material alpha */
680 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
683 for (i = 0; i < 3; i++) {
684 value[i] = ctx->Light.Light[ln].Diffuse[i] *
685 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i];
687 /* [3] = material alpha */
688 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
691 for (i = 0; i < 3; i++) {
692 value[i] = ctx->Light.Light[ln].Specular[i] *
693 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i];
695 /* [3] = material alpha */
696 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
699 _mesa_problem(ctx, "Invalid lightprod state in fetch_state");
705 /* state[1] is the texture unit */
706 const GLuint unit = (GLuint) state[1];
707 /* state[2] is the texgen attribute */
709 case STATE_TEXGEN_EYE_S:
710 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneS);
712 case STATE_TEXGEN_EYE_T:
713 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneT);
715 case STATE_TEXGEN_EYE_R:
716 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneR);
718 case STATE_TEXGEN_EYE_Q:
719 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneQ);
721 case STATE_TEXGEN_OBJECT_S:
722 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneS);
724 case STATE_TEXGEN_OBJECT_T:
725 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneT);
727 case STATE_TEXGEN_OBJECT_R:
728 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneR);
730 case STATE_TEXGEN_OBJECT_Q:
731 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneQ);
734 _mesa_problem(ctx, "Invalid texgen state in fetch_state");
738 case STATE_TEXENV_COLOR:
740 /* state[1] is the texture unit */
741 const GLuint unit = (GLuint) state[1];
742 COPY_4V(value, ctx->Texture.Unit[unit].EnvColor);
745 case STATE_FOG_COLOR:
746 COPY_4V(value, ctx->Fog.Color);
748 case STATE_FOG_PARAMS:
749 value[0] = ctx->Fog.Density;
750 value[1] = ctx->Fog.Start;
751 value[2] = ctx->Fog.End;
752 value[3] = 1.0F / (ctx->Fog.End - ctx->Fog.Start);
754 case STATE_CLIPPLANE:
756 const GLuint plane = (GLuint) state[1];
757 COPY_4V(value, ctx->Transform.EyeUserPlane[plane]);
760 case STATE_POINT_SIZE:
761 value[0] = ctx->Point.Size;
762 value[1] = ctx->Point.MinSize;
763 value[2] = ctx->Point.MaxSize;
764 value[3] = ctx->Point.Threshold;
766 case STATE_POINT_ATTENUATION:
767 value[0] = ctx->Point.Params[0];
768 value[1] = ctx->Point.Params[1];
769 value[2] = ctx->Point.Params[2];
774 /* state[1] = modelview, projection, texture, etc. */
775 /* state[2] = which texture matrix or program matrix */
776 /* state[3] = first column to fetch */
777 /* state[4] = last column to fetch */
778 /* state[5] = transpose, inverse or invtrans */
780 const GLmatrix *matrix;
781 const enum state_index mat = state[1];
782 const GLuint index = (GLuint) state[2];
783 const GLuint first = (GLuint) state[3];
784 const GLuint last = (GLuint) state[4];
785 const enum state_index modifier = state[5];
788 if (mat == STATE_MODELVIEW) {
789 matrix = ctx->ModelviewMatrixStack.Top;
791 else if (mat == STATE_PROJECTION) {
792 matrix = ctx->ProjectionMatrixStack.Top;
794 else if (mat == STATE_MVP) {
795 matrix = &ctx->_ModelProjectMatrix;
797 else if (mat == STATE_TEXTURE) {
798 matrix = ctx->TextureMatrixStack[index].Top;
800 else if (mat == STATE_PROGRAM) {
801 matrix = ctx->ProgramMatrixStack[index].Top;
804 _mesa_problem(ctx, "Bad matrix name in _mesa_fetch_state()");
807 if (modifier == STATE_MATRIX_INVERSE ||
808 modifier == STATE_MATRIX_INVTRANS) {
809 /* XXX be sure inverse is up to date */
815 if (modifier == STATE_MATRIX_TRANSPOSE ||
816 modifier == STATE_MATRIX_INVTRANS) {
817 for (i = 0, row = first; row <= last; row++) {
818 value[i++] = m[row * 4 + 0];
819 value[i++] = m[row * 4 + 1];
820 value[i++] = m[row * 4 + 2];
821 value[i++] = m[row * 4 + 3];
825 for (i = 0, row = first; row <= last; row++) {
826 value[i++] = m[row + 0];
827 value[i++] = m[row + 4];
828 value[i++] = m[row + 8];
829 value[i++] = m[row + 12];
834 case STATE_DEPTH_RANGE:
835 value[0] = ctx->Viewport.Near; /* near */
836 value[1] = ctx->Viewport.Far; /* far */
837 value[2] = ctx->Viewport.Far - ctx->Viewport.Near; /* far - near */
840 case STATE_FRAGMENT_PROGRAM:
842 /* state[1] = {STATE_ENV, STATE_LOCAL} */
843 /* state[2] = parameter index */
844 const int idx = (int) state[2];
847 COPY_4V(value, ctx->FragmentProgram.Parameters[idx]);
850 COPY_4V(value, ctx->FragmentProgram.Current->Base.LocalParams[idx]);
853 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
859 case STATE_VERTEX_PROGRAM:
861 /* state[1] = {STATE_ENV, STATE_LOCAL} */
862 /* state[2] = parameter index */
863 const int idx = (int) state[2];
866 COPY_4V(value, ctx->VertexProgram.Parameters[idx]);
869 COPY_4V(value, ctx->VertexProgram.Current->Base.LocalParams[idx]);
872 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
878 _mesa_problem(ctx, "Invalid state in _mesa_fetch_state");
885 * Loop over all the parameters in a parameter list. If the parameter
886 * is a GL state reference, look up the current value of that state
887 * variable and put it into the parameter's Value[4] array.
888 * This would be called at glBegin time when using a fragment program.
891 _mesa_load_state_parameters(GLcontext *ctx,
892 struct program_parameter_list *paramList)
899 for (i = 0; i < paramList->NumParameters; i++) {
900 if (paramList->Parameters[i].Type == STATE) {
901 _mesa_fetch_state(ctx, paramList->Parameters[i].StateIndexes,
902 paramList->Parameters[i].Values);
909 /**********************************************************************/
911 /**********************************************************************/
915 * Bind a program (make it current)
916 * \note Called from the GL API dispatcher by both glBindProgramNV
917 * and glBindProgramARB.
920 _mesa_BindProgram(GLenum target, GLuint id)
922 struct program *prog;
923 GET_CURRENT_CONTEXT(ctx);
924 ASSERT_OUTSIDE_BEGIN_END(ctx);
926 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
928 if ((target == GL_VERTEX_PROGRAM_NV
929 && ctx->Extensions.NV_vertex_program) ||
930 (target == GL_VERTEX_PROGRAM_ARB
931 && ctx->Extensions.ARB_vertex_program)) {
932 /*** Vertex program binding ***/
933 struct vertex_program *curProg = ctx->VertexProgram.Current;
934 if (curProg->Base.Id == id) {
935 /* binding same program - no change */
938 if (curProg->Base.Id != 0) {
939 /* decrement refcount on previously bound vertex program */
940 curProg->Base.RefCount--;
941 /* and delete if refcount goes below one */
942 if (curProg->Base.RefCount <= 0) {
943 ASSERT(curProg->Base.DeletePending);
944 ctx->Driver.DeleteProgram(ctx, &(curProg->Base));
945 _mesa_HashRemove(ctx->Shared->Programs, id);
949 else if ((target == GL_FRAGMENT_PROGRAM_NV
950 && ctx->Extensions.NV_fragment_program) ||
951 (target == GL_FRAGMENT_PROGRAM_ARB
952 && ctx->Extensions.ARB_fragment_program)) {
953 /*** Fragment program binding ***/
954 struct fragment_program *curProg = ctx->FragmentProgram.Current;
955 if (curProg->Base.Id == id) {
956 /* binding same program - no change */
959 if (curProg->Base.Id != 0) {
960 /* decrement refcount on previously bound fragment program */
961 curProg->Base.RefCount--;
962 /* and delete if refcount goes below one */
963 if (curProg->Base.RefCount <= 0) {
964 ASSERT(curProg->Base.DeletePending);
965 ctx->Driver.DeleteProgram(ctx, &(curProg->Base));
966 _mesa_HashRemove(ctx->Shared->Programs, id);
971 _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramNV/ARB(target)");
975 /* NOTE: binding to a non-existant program is not an error.
976 * That's supposed to be caught in glBegin.
979 /* Bind default program */
981 if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB)
982 prog = ctx->Shared->DefaultVertexProgram;
984 prog = ctx->Shared->DefaultFragmentProgram;
987 /* Bind user program */
988 prog = (struct program *) _mesa_HashLookup(ctx->Shared->Programs, id);
989 if (!prog || prog == &_mesa_DummyProgram) {
990 /* allocate a new program now */
991 prog = ctx->Driver.NewProgram(ctx, target, id);
993 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramNV/ARB");
996 _mesa_HashInsert(ctx->Shared->Programs, id, prog);
998 else if (prog->Target != target) {
999 _mesa_error(ctx, GL_INVALID_OPERATION,
1000 "glBindProgramNV/ARB(target mismatch)");
1006 if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB) {
1007 ctx->VertexProgram.Current = (struct vertex_program *) prog;
1009 else if (target == GL_FRAGMENT_PROGRAM_NV || target == GL_FRAGMENT_PROGRAM_ARB) {
1010 ctx->FragmentProgram.Current = (struct fragment_program *) prog;
1013 /* Never null pointers */
1014 ASSERT(ctx->VertexProgram.Current);
1015 ASSERT(ctx->FragmentProgram.Current);
1020 if (ctx->Driver.BindProgram)
1021 ctx->Driver.BindProgram(ctx, target, prog);
1026 * Delete a list of programs.
1027 * \note Not compiled into display lists.
1028 * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
1031 _mesa_DeletePrograms(GLsizei n, const GLuint *ids)
1034 GET_CURRENT_CONTEXT(ctx);
1035 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1038 _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
1042 for (i = 0; i < n; i++) {
1044 struct program *prog = (struct program *)
1045 _mesa_HashLookup(ctx->Shared->Programs, ids[i]);
1046 if (prog == &_mesa_DummyProgram) {
1047 _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
1050 /* Unbind program if necessary */
1051 if (prog->Target == GL_VERTEX_PROGRAM_NV ||
1052 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
1053 if (ctx->VertexProgram.Current &&
1054 ctx->VertexProgram.Current->Base.Id == ids[i]) {
1055 /* unbind this currently bound program */
1056 _mesa_BindProgram(prog->Target, 0);
1059 else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
1060 prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
1061 if (ctx->FragmentProgram.Current &&
1062 ctx->FragmentProgram.Current->Base.Id == ids[i]) {
1063 /* unbind this currently bound program */
1064 _mesa_BindProgram(prog->Target, 0);
1068 _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
1071 /* Decrement reference count if not already marked for delete */
1072 if (!prog->DeletePending) {
1073 prog->DeletePending = GL_TRUE;
1076 if (prog->RefCount <= 0) {
1077 _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
1078 ctx->Driver.DeleteProgram(ctx, prog);
1087 * Generate a list of new program identifiers.
1088 * \note Not compiled into display lists.
1089 * \note Called by both glGenProgramsNV and glGenProgramsARB.
1092 _mesa_GenPrograms(GLsizei n, GLuint *ids)
1096 GET_CURRENT_CONTEXT(ctx);
1097 ASSERT_OUTSIDE_BEGIN_END(ctx);
1100 _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
1107 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
1109 /* Insert pointer to dummy program as placeholder */
1110 for (i = 0; i < (GLuint) n; i++) {
1111 _mesa_HashInsert(ctx->Shared->Programs, first + i, &_mesa_DummyProgram);
1114 /* Return the program names */
1115 for (i = 0; i < (GLuint) n; i++) {
1122 * Determine if id names a vertex or fragment program.
1123 * \note Not compiled into display lists.
1124 * \note Called from both glIsProgramNV and glIsProgramARB.
1125 * \param id is the program identifier
1126 * \return GL_TRUE if id is a program, else GL_FALSE.
1128 GLboolean GLAPIENTRY
1129 _mesa_IsProgram(GLuint id)
1131 GET_CURRENT_CONTEXT(ctx);
1132 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1137 if (_mesa_HashLookup(ctx->Shared->Programs, id))
1145 /**********************************************************************/
1146 /* GL_MESA_program_debug extension */
1147 /**********************************************************************/
1152 glProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
1155 _mesa_ProgramCallbackMESA(target, callback, data);
1160 _mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
1163 GET_CURRENT_CONTEXT(ctx);
1166 case GL_FRAGMENT_PROGRAM_ARB:
1167 if (!ctx->Extensions.ARB_fragment_program) {
1168 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1171 ctx->FragmentProgram.Callback = callback;
1172 ctx->FragmentProgram.CallbackData = data;
1174 case GL_FRAGMENT_PROGRAM_NV:
1175 if (!ctx->Extensions.NV_fragment_program) {
1176 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1179 ctx->FragmentProgram.Callback = callback;
1180 ctx->FragmentProgram.CallbackData = data;
1182 case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
1183 if (!ctx->Extensions.ARB_vertex_program &&
1184 !ctx->Extensions.NV_vertex_program) {
1185 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1188 ctx->VertexProgram.Callback = callback;
1189 ctx->VertexProgram.CallbackData = data;
1192 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1200 glGetProgramRegisterfvMESA(GLenum target,
1201 GLsizei len, const GLubyte *registerName,
1204 _mesa_GetProgramRegisterfvMESA(target, len, registerName, v);
1209 _mesa_GetProgramRegisterfvMESA(GLenum target,
1210 GLsizei len, const GLubyte *registerName,
1214 GET_CURRENT_CONTEXT(ctx);
1216 /* We _should_ be inside glBegin/glEnd */
1218 if (ctx->Driver.CurrentExecPrimitive == PRIM_OUTSIDE_BEGIN_END) {
1219 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA");
1224 /* make null-terminated copy of registerName */
1225 len = MIN2((unsigned int) len, sizeof(reg) - 1);
1226 _mesa_memcpy(reg, registerName, len);
1230 case GL_VERTEX_PROGRAM_NV:
1231 if (!ctx->Extensions.ARB_vertex_program &&
1232 !ctx->Extensions.NV_vertex_program) {
1233 _mesa_error(ctx, GL_INVALID_ENUM,
1234 "glGetProgramRegisterfvMESA(target)");
1237 if (!ctx->VertexProgram._Enabled) {
1238 _mesa_error(ctx, GL_INVALID_OPERATION,
1239 "glGetProgramRegisterfvMESA");
1242 /* GL_NV_vertex_program */
1243 if (reg[0] == 'R') {
1245 GLint i = _mesa_atoi(reg + 1);
1246 if (i >= (GLint)ctx->Const.MaxVertexProgramTemps) {
1247 _mesa_error(ctx, GL_INVALID_VALUE,
1248 "glGetProgramRegisterfvMESA(registerName)");
1251 COPY_4V(v, ctx->VertexProgram.Temporaries[i]);
1253 else if (reg[0] == 'v' && reg[1] == '[') {
1254 /* Vertex Input attribute */
1256 for (i = 0; i < ctx->Const.MaxVertexProgramAttribs; i++) {
1257 const char *name = _mesa_nv_vertex_input_register_name(i);
1259 sprintf(number, "%d", i);
1260 if (_mesa_strncmp(reg + 2, name, 4) == 0 ||
1261 _mesa_strncmp(reg + 2, number, _mesa_strlen(number)) == 0) {
1262 COPY_4V(v, ctx->VertexProgram.Inputs[i]);
1266 _mesa_error(ctx, GL_INVALID_VALUE,
1267 "glGetProgramRegisterfvMESA(registerName)");
1270 else if (reg[0] == 'o' && reg[1] == '[') {
1271 /* Vertex output attribute */
1273 /* GL_ARB_vertex_program */
1274 else if (_mesa_strncmp(reg, "vertex.", 7) == 0) {
1278 _mesa_error(ctx, GL_INVALID_VALUE,
1279 "glGetProgramRegisterfvMESA(registerName)");
1283 case GL_FRAGMENT_PROGRAM_ARB:
1284 if (!ctx->Extensions.ARB_fragment_program) {
1285 _mesa_error(ctx, GL_INVALID_ENUM,
1286 "glGetProgramRegisterfvMESA(target)");
1289 if (!ctx->FragmentProgram._Enabled) {
1290 _mesa_error(ctx, GL_INVALID_OPERATION,
1291 "glGetProgramRegisterfvMESA");
1296 case GL_FRAGMENT_PROGRAM_NV:
1297 if (!ctx->Extensions.NV_fragment_program) {
1298 _mesa_error(ctx, GL_INVALID_ENUM,
1299 "glGetProgramRegisterfvMESA(target)");
1302 if (!ctx->FragmentProgram._Enabled) {
1303 _mesa_error(ctx, GL_INVALID_OPERATION,
1304 "glGetProgramRegisterfvMESA");
1307 if (reg[0] == 'R') {
1309 GLint i = _mesa_atoi(reg + 1);
1310 if (i >= (GLint)ctx->Const.MaxFragmentProgramTemps) {
1311 _mesa_error(ctx, GL_INVALID_VALUE,
1312 "glGetProgramRegisterfvMESA(registerName)");
1315 COPY_4V(v, ctx->FragmentProgram.Machine.Temporaries[i]);
1317 else if (reg[0] == 'f' && reg[1] == '[') {
1318 /* Fragment input attribute */
1320 for (i = 0; i < ctx->Const.MaxFragmentProgramAttribs; i++) {
1321 const char *name = _mesa_nv_fragment_input_register_name(i);
1322 if (_mesa_strncmp(reg + 2, name, 4) == 0) {
1323 COPY_4V(v, ctx->FragmentProgram.Machine.Inputs[i]);
1327 _mesa_error(ctx, GL_INVALID_VALUE,
1328 "glGetProgramRegisterfvMESA(registerName)");
1331 else if (_mesa_strcmp(reg, "o[COLR]") == 0) {
1332 /* Fragment output color */
1333 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_COLR]);
1335 else if (_mesa_strcmp(reg, "o[COLH]") == 0) {
1336 /* Fragment output color */
1337 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_COLH]);
1339 else if (_mesa_strcmp(reg, "o[DEPR]") == 0) {
1340 /* Fragment output depth */
1341 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_DEPR]);
1344 /* try user-defined identifiers */
1345 const GLfloat *value = _mesa_lookup_parameter_value(
1346 ctx->FragmentProgram.Current->Parameters, -1, reg);
1351 _mesa_error(ctx, GL_INVALID_VALUE,
1352 "glGetProgramRegisterfvMESA(registerName)");
1358 _mesa_error(ctx, GL_INVALID_ENUM,
1359 "glGetProgramRegisterfvMESA(target)");