2 * Mesa 3-D graphics library
4 * Copyright (C) 2004-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009-2010 VMware, Inc. 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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
30 * Implementation of GLSL-related API functions.
31 * The glUniform* functions are in uniforms.c
35 * 1. Check that the right error code is generated for all _mesa_error() calls.
36 * 2. Insert FLUSH_VERTICES calls in various places
41 #include "main/glheader.h"
42 #include "main/context.h"
43 #include "main/dispatch.h"
44 #include "main/enums.h"
45 #include "main/hash.h"
46 #include "main/mtypes.h"
47 #include "main/pipelineobj.h"
48 #include "main/shaderapi.h"
49 #include "main/shaderobj.h"
50 #include "main/transformfeedback.h"
51 #include "main/uniforms.h"
52 #include "compiler/glsl/glsl_parser_extras.h"
53 #include "compiler/glsl/ir.h"
54 #include "compiler/glsl/ir_uniform.h"
55 #include "compiler/glsl/program.h"
56 #include "program/program.h"
57 #include "program/prog_print.h"
58 #include "program/prog_parameter.h"
59 #include "util/ralloc.h"
60 #include "util/hash_table.h"
61 #include "util/mesa-sha1.h"
65 #define PATH_MAX _MAX_PATH
69 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
72 _mesa_get_shader_flags(void)
74 GLbitfield flags = 0x0;
75 const char *env = getenv("MESA_GLSL");
78 if (strstr(env, "dump_on_error"))
79 flags |= GLSL_DUMP_ON_ERROR;
80 else if (strstr(env, "dump"))
82 if (strstr(env, "log"))
84 if (strstr(env, "nopvert"))
85 flags |= GLSL_NOP_VERT;
86 if (strstr(env, "nopfrag"))
87 flags |= GLSL_NOP_FRAG;
88 if (strstr(env, "nopt"))
90 else if (strstr(env, "opt"))
92 if (strstr(env, "uniform"))
93 flags |= GLSL_UNIFORMS;
94 if (strstr(env, "useprog"))
95 flags |= GLSL_USE_PROG;
96 if (strstr(env, "errors"))
97 flags |= GLSL_REPORT_ERRORS;
104 * Memoized version of getenv("MESA_SHADER_CAPTURE_PATH").
107 _mesa_get_shader_capture_path(void)
109 static bool read_env_var = false;
110 static const char *path = NULL;
113 path = getenv("MESA_SHADER_CAPTURE_PATH");
116 strlen(path) > PATH_MAX - strlen("/fp-4294967295.shader_test")) {
117 GET_CURRENT_CONTEXT(ctx);
118 _mesa_warning(ctx, "MESA_SHADER_CAPTURE_PATH too long; ignoring "
119 "request to capture shaders");
128 * Initialize context's shader state.
131 _mesa_init_shader_state(struct gl_context *ctx)
133 /* Device drivers may override these to control what kind of instructions
134 * are generated by the GLSL compiler.
136 struct gl_shader_compiler_options options;
140 memset(&options, 0, sizeof(options));
141 options.MaxUnrollIterations = 32;
142 options.MaxIfDepth = UINT_MAX;
144 for (sh = 0; sh < MESA_SHADER_STAGES; ++sh)
145 memcpy(&ctx->Const.ShaderCompilerOptions[sh], &options, sizeof(options));
147 ctx->Shader.Flags = _mesa_get_shader_flags();
149 if (ctx->Shader.Flags != 0)
150 ctx->Const.GenerateTemporaryNames = true;
152 /* Extended for ARB_separate_shader_objects */
153 ctx->Shader.RefCount = 1;
154 mtx_init(&ctx->Shader.Mutex, mtx_plain);
156 ctx->TessCtrlProgram.patch_vertices = 3;
157 for (i = 0; i < 4; ++i)
158 ctx->TessCtrlProgram.patch_default_outer_level[i] = 1.0;
159 for (i = 0; i < 2; ++i)
160 ctx->TessCtrlProgram.patch_default_inner_level[i] = 1.0;
165 * Free the per-context shader-related state.
168 _mesa_free_shader_state(struct gl_context *ctx)
171 for (i = 0; i < MESA_SHADER_STAGES; i++) {
172 _mesa_reference_shader_program(ctx, &ctx->Shader.CurrentProgram[i],
175 _mesa_reference_shader_program(ctx, &ctx->Shader._CurrentFragmentProgram,
177 _mesa_reference_shader_program(ctx, &ctx->Shader.ActiveProgram, NULL);
179 /* Extended for ARB_separate_shader_objects */
180 _mesa_reference_pipeline_object(ctx, &ctx->_Shader, NULL);
182 assert(ctx->Shader.RefCount == 1);
183 mtx_destroy(&ctx->Shader.Mutex);
188 * Copy string from <src> to <dst>, up to maxLength characters, returning
189 * length of <dst> in <length>.
190 * \param src the strings source
191 * \param maxLength max chars to copy
192 * \param length returns number of chars copied
193 * \param dst the string destination
196 _mesa_copy_string(GLchar *dst, GLsizei maxLength,
197 GLsizei *length, const GLchar *src)
200 for (len = 0; len < maxLength - 1 && src && src[len]; len++)
211 * Confirm that the a shader type is valid and supported by the implementation
213 * \param ctx Current GL context
214 * \param type Shader target
218 _mesa_validate_shader_target(const struct gl_context *ctx, GLenum type)
220 /* Note: when building built-in GLSL functions, this function may be
221 * invoked with ctx == NULL. In that case, we can only validate that it's
222 * a shader target we recognize, not that it's supported in the current
223 * context. But that's fine--we don't need any further validation than
224 * that when building built-in GLSL functions.
228 case GL_FRAGMENT_SHADER:
229 return ctx == NULL || ctx->Extensions.ARB_fragment_shader;
230 case GL_VERTEX_SHADER:
231 return ctx == NULL || ctx->Extensions.ARB_vertex_shader;
232 case GL_GEOMETRY_SHADER_ARB:
233 return ctx == NULL || _mesa_has_geometry_shaders(ctx);
234 case GL_TESS_CONTROL_SHADER:
235 case GL_TESS_EVALUATION_SHADER:
236 return ctx == NULL || _mesa_has_tessellation(ctx);
237 case GL_COMPUTE_SHADER:
238 return ctx == NULL || _mesa_has_compute_shaders(ctx);
246 is_program(struct gl_context *ctx, GLuint name)
248 struct gl_shader_program *shProg = _mesa_lookup_shader_program(ctx, name);
249 return shProg ? GL_TRUE : GL_FALSE;
254 is_shader(struct gl_context *ctx, GLuint name)
256 struct gl_shader *shader = _mesa_lookup_shader(ctx, name);
257 return shader ? GL_TRUE : GL_FALSE;
262 * Attach shader to a shader program.
265 attach_shader(struct gl_context *ctx, GLuint program, GLuint shader)
267 struct gl_shader_program *shProg;
268 struct gl_shader *sh;
271 const bool same_type_disallowed = _mesa_is_gles(ctx);
273 shProg = _mesa_lookup_shader_program_err(ctx, program, "glAttachShader");
277 sh = _mesa_lookup_shader_err(ctx, shader, "glAttachShader");
282 n = shProg->NumShaders;
283 for (i = 0; i < n; i++) {
284 if (shProg->Shaders[i] == sh) {
285 /* The shader is already attched to this program. The
286 * GL_ARB_shader_objects spec says:
288 * "The error INVALID_OPERATION is generated by AttachObjectARB
289 * if <obj> is already attached to <containerObj>."
291 _mesa_error(ctx, GL_INVALID_OPERATION, "glAttachShader");
293 } else if (same_type_disallowed &&
294 shProg->Shaders[i]->Stage == sh->Stage) {
295 /* Shader with the same type is already attached to this program,
296 * OpenGL ES 2.0 and 3.0 specs say:
298 * "Multiple shader objects of the same type may not be attached
299 * to a single program object. [...] The error INVALID_OPERATION
300 * is generated if [...] another shader object of the same type
301 * as shader is already attached to program."
303 _mesa_error(ctx, GL_INVALID_OPERATION, "glAttachShader");
309 shProg->Shaders = realloc(shProg->Shaders,
310 (n + 1) * sizeof(struct gl_shader *));
311 if (!shProg->Shaders) {
312 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glAttachShader");
317 shProg->Shaders[n] = NULL; /* since realloc() didn't zero the new space */
318 _mesa_reference_shader(ctx, &shProg->Shaders[n], sh);
319 shProg->NumShaders++;
324 create_shader(struct gl_context *ctx, GLenum type)
326 struct gl_shader *sh;
329 if (!_mesa_validate_shader_target(ctx, type)) {
330 _mesa_error(ctx, GL_INVALID_ENUM, "CreateShader(%s)",
331 _mesa_enum_to_string(type));
335 _mesa_HashLockMutex(ctx->Shared->ShaderObjects);
336 name = _mesa_HashFindFreeKeyBlock(ctx->Shared->ShaderObjects, 1);
337 sh = ctx->Driver.NewShader(ctx, name,
338 _mesa_shader_enum_to_shader_stage(type));
340 _mesa_HashInsertLocked(ctx->Shared->ShaderObjects, name, sh);
341 _mesa_HashUnlockMutex(ctx->Shared->ShaderObjects);
348 create_shader_program(struct gl_context *ctx)
351 struct gl_shader_program *shProg;
353 _mesa_HashLockMutex(ctx->Shared->ShaderObjects);
355 name = _mesa_HashFindFreeKeyBlock(ctx->Shared->ShaderObjects, 1);
357 shProg = _mesa_new_shader_program(name);
359 _mesa_HashInsertLocked(ctx->Shared->ShaderObjects, name, shProg);
361 assert(shProg->RefCount == 1);
363 _mesa_HashUnlockMutex(ctx->Shared->ShaderObjects);
370 * Delete a shader program. Actually, just decrement the program's
371 * reference count and mark it as DeletePending.
372 * Used to implement glDeleteProgram() and glDeleteObjectARB().
375 delete_shader_program(struct gl_context *ctx, GLuint name)
378 * NOTE: deleting shaders/programs works a bit differently than
379 * texture objects (and buffer objects, etc). Shader/program
380 * handles/IDs exist in the hash table until the object is really
381 * deleted (refcount==0). With texture objects, the handle/ID is
382 * removed from the hash table in glDeleteTextures() while the tex
383 * object itself might linger until its refcount goes to zero.
385 struct gl_shader_program *shProg;
387 shProg = _mesa_lookup_shader_program_err(ctx, name, "glDeleteProgram");
391 if (!shProg->DeletePending) {
392 shProg->DeletePending = GL_TRUE;
394 /* effectively, decr shProg's refcount */
395 _mesa_reference_shader_program(ctx, &shProg, NULL);
401 delete_shader(struct gl_context *ctx, GLuint shader)
403 struct gl_shader *sh;
405 sh = _mesa_lookup_shader_err(ctx, shader, "glDeleteShader");
409 if (!sh->DeletePending) {
410 sh->DeletePending = GL_TRUE;
412 /* effectively, decr sh's refcount */
413 _mesa_reference_shader(ctx, &sh, NULL);
419 detach_shader(struct gl_context *ctx, GLuint program, GLuint shader)
421 struct gl_shader_program *shProg;
425 shProg = _mesa_lookup_shader_program_err(ctx, program, "glDetachShader");
429 n = shProg->NumShaders;
431 for (i = 0; i < n; i++) {
432 if (shProg->Shaders[i]->Name == shader) {
434 struct gl_shader **newList;
437 _mesa_reference_shader(ctx, &shProg->Shaders[i], NULL);
439 /* alloc new, smaller array */
440 newList = malloc((n - 1) * sizeof(struct gl_shader *));
442 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glDetachShader");
445 /* Copy old list entries to new list, skipping removed entry at [i] */
446 for (j = 0; j < i; j++) {
447 newList[j] = shProg->Shaders[j];
450 newList[j++] = shProg->Shaders[i];
453 /* Free old list and install new one */
454 free(shProg->Shaders);
455 shProg->Shaders = newList;
456 shProg->NumShaders = n - 1;
459 /* sanity check - make sure the new list's entries are sensible */
460 for (j = 0; j < shProg->NumShaders; j++) {
461 assert(shProg->Shaders[j]->Stage == MESA_SHADER_VERTEX ||
462 shProg->Shaders[j]->Stage == MESA_SHADER_TESS_CTRL ||
463 shProg->Shaders[j]->Stage == MESA_SHADER_TESS_EVAL ||
464 shProg->Shaders[j]->Stage == MESA_SHADER_GEOMETRY ||
465 shProg->Shaders[j]->Stage == MESA_SHADER_FRAGMENT);
466 assert(shProg->Shaders[j]->RefCount > 0);
477 if (is_shader(ctx, shader) || is_program(ctx, shader))
478 err = GL_INVALID_OPERATION;
480 err = GL_INVALID_VALUE;
481 _mesa_error(ctx, err, "glDetachShader(shader)");
488 * Return list of shaders attached to shader program.
491 get_attached_shaders(struct gl_context *ctx, GLuint program, GLsizei maxCount,
492 GLsizei *count, GLuint *obj)
494 struct gl_shader_program *shProg;
497 _mesa_error(ctx, GL_INVALID_VALUE, "glGetAttachedShaders(maxCount < 0)");
502 _mesa_lookup_shader_program_err(ctx, program, "glGetAttachedShaders");
506 for (i = 0; i < (GLuint) maxCount && i < shProg->NumShaders; i++) {
507 obj[i] = shProg->Shaders[i]->Name;
516 * glGetHandleARB() - return ID/name of currently bound shader program.
519 get_handle(struct gl_context *ctx, GLenum pname)
521 if (pname == GL_PROGRAM_OBJECT_ARB) {
522 if (ctx->_Shader->ActiveProgram)
523 return ctx->_Shader->ActiveProgram->Name;
528 _mesa_error(ctx, GL_INVALID_ENUM, "glGetHandleARB");
535 * Check if a geometry shader query is valid at this time. If not, report an
536 * error and return false.
538 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
540 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
541 * are queried for a program which has not been linked successfully, or
542 * which does not contain objects to form a geometry shader, then an
543 * INVALID_OPERATION error is generated."
546 check_gs_query(struct gl_context *ctx, const struct gl_shader_program *shProg)
548 if (shProg->LinkStatus &&
549 shProg->_LinkedShaders[MESA_SHADER_GEOMETRY] != NULL) {
553 _mesa_error(ctx, GL_INVALID_OPERATION,
554 "glGetProgramv(linked geometry shader required)");
560 * Check if a tessellation control shader query is valid at this time.
561 * If not, report an error and return false.
563 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
565 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
566 * not been linked successfully, or which does not contain objects to
567 * form a tessellation control shader, then an INVALID_OPERATION error is
571 check_tcs_query(struct gl_context *ctx, const struct gl_shader_program *shProg)
573 if (shProg->LinkStatus &&
574 shProg->_LinkedShaders[MESA_SHADER_TESS_CTRL] != NULL) {
578 _mesa_error(ctx, GL_INVALID_OPERATION,
579 "glGetProgramv(linked tessellation control shader required)");
585 * Check if a tessellation evaluation shader query is valid at this time.
586 * If not, report an error and return false.
588 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
590 * "If any of the pname values in this paragraph are queried for a program
591 * which has not been linked successfully, or which does not contain
592 * objects to form a tessellation evaluation shader, then an
593 * INVALID_OPERATION error is generated."
597 check_tes_query(struct gl_context *ctx, const struct gl_shader_program *shProg)
599 if (shProg->LinkStatus &&
600 shProg->_LinkedShaders[MESA_SHADER_TESS_EVAL] != NULL) {
604 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramv(linked tessellation "
605 "evaluation shader required)");
611 * glGetProgramiv() - get shader program state.
612 * Note that this is for GLSL shader programs, not ARB vertex/fragment
613 * programs (see glGetProgramivARB).
616 get_programiv(struct gl_context *ctx, GLuint program, GLenum pname,
619 struct gl_shader_program *shProg
620 = _mesa_lookup_shader_program_err(ctx, program, "glGetProgramiv(program)");
622 /* Is transform feedback available in this context?
625 (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.EXT_transform_feedback)
626 || ctx->API == API_OPENGL_CORE
627 || _mesa_is_gles3(ctx);
629 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
630 * and GL 3.2) are available in this context
632 const bool has_core_gs = _mesa_has_geometry_shaders(ctx);
633 const bool has_tess = _mesa_has_tessellation(ctx);
635 /* Are uniform buffer objects available in this context?
638 (ctx->API == API_OPENGL_COMPAT &&
639 ctx->Extensions.ARB_uniform_buffer_object)
640 || ctx->API == API_OPENGL_CORE
641 || _mesa_is_gles3(ctx);
648 case GL_DELETE_STATUS:
649 *params = shProg->DeletePending;
652 *params = shProg->LinkStatus;
654 case GL_VALIDATE_STATUS:
655 *params = shProg->Validated;
657 case GL_INFO_LOG_LENGTH:
658 *params = shProg->InfoLog ? strlen(shProg->InfoLog) + 1 : 0;
660 case GL_ATTACHED_SHADERS:
661 *params = shProg->NumShaders;
663 case GL_ACTIVE_ATTRIBUTES:
664 *params = _mesa_count_active_attribs(shProg);
666 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH:
667 *params = _mesa_longest_attribute_name_length(shProg);
669 case GL_ACTIVE_UNIFORMS: {
671 const unsigned num_uniforms =
672 shProg->NumUniformStorage - shProg->NumHiddenUniforms;
673 for (*params = 0, i = 0; i < num_uniforms; i++) {
674 if (!shProg->UniformStorage[i].is_shader_storage)
679 case GL_ACTIVE_UNIFORM_MAX_LENGTH: {
682 const unsigned num_uniforms =
683 shProg->NumUniformStorage - shProg->NumHiddenUniforms;
685 for (i = 0; i < num_uniforms; i++) {
686 if (shProg->UniformStorage[i].is_shader_storage)
689 /* Add one for the terminating NUL character for a non-array, and
690 * 4 for the "[0]" and the NUL for an array.
692 const GLint len = strlen(shProg->UniformStorage[i].name) + 1 +
693 ((shProg->UniformStorage[i].array_elements != 0) ? 3 : 0);
702 case GL_TRANSFORM_FEEDBACK_VARYINGS:
705 *params = shProg->TransformFeedback.NumVarying;
707 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH: {
713 for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {
714 /* Add one for the terminating NUL character.
717 strlen(shProg->TransformFeedback.VaryingNames[i]) + 1;
726 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE:
729 *params = shProg->TransformFeedback.BufferMode;
731 case GL_GEOMETRY_VERTICES_OUT:
734 if (check_gs_query(ctx, shProg)) {
735 *params = shProg->_LinkedShaders[MESA_SHADER_GEOMETRY]->
739 case GL_GEOMETRY_SHADER_INVOCATIONS:
740 if (!has_core_gs || !ctx->Extensions.ARB_gpu_shader5)
742 if (check_gs_query(ctx, shProg)) {
743 *params = shProg->_LinkedShaders[MESA_SHADER_GEOMETRY]->
747 case GL_GEOMETRY_INPUT_TYPE:
750 if (check_gs_query(ctx, shProg)) {
751 *params = shProg->_LinkedShaders[MESA_SHADER_GEOMETRY]->
755 case GL_GEOMETRY_OUTPUT_TYPE:
758 if (check_gs_query(ctx, shProg)) {
759 *params = shProg->_LinkedShaders[MESA_SHADER_GEOMETRY]->
763 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH: {
770 for (i = 0; i < shProg->NumUniformBlocks; i++) {
771 /* Add one for the terminating NUL character.
773 const GLint len = strlen(shProg->UniformBlocks[i].Name) + 1;
782 case GL_ACTIVE_UNIFORM_BLOCKS:
786 *params = shProg->NumUniformBlocks;
788 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT:
789 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
790 * only available with desktop OpenGL 3.0+ with the
791 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
793 * On desktop, we ignore the 3.0+ requirement because it is silly.
795 if (!_mesa_is_desktop_gl(ctx) && !_mesa_is_gles3(ctx))
798 *params = shProg->BinaryRetreivableHint;
800 case GL_PROGRAM_BINARY_LENGTH:
803 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS:
804 if (!ctx->Extensions.ARB_shader_atomic_counters)
807 *params = shProg->NumAtomicBuffers;
809 case GL_COMPUTE_WORK_GROUP_SIZE: {
811 if (!_mesa_has_compute_shaders(ctx))
813 if (!shProg->LinkStatus) {
814 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramiv(program not "
818 if (shProg->_LinkedShaders[MESA_SHADER_COMPUTE] == NULL) {
819 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramiv(no compute "
823 for (i = 0; i < 3; i++)
824 params[i] = shProg->Comp.LocalSize[i];
827 case GL_PROGRAM_SEPARABLE:
828 /* If the program has not been linked, return initial value 0. */
829 *params = (shProg->LinkStatus == GL_FALSE) ? 0 : shProg->SeparateShader;
832 /* ARB_tessellation_shader */
833 case GL_TESS_CONTROL_OUTPUT_VERTICES:
836 if (check_tcs_query(ctx, shProg)) {
837 *params = shProg->_LinkedShaders[MESA_SHADER_TESS_CTRL]->
838 TessCtrl.VerticesOut;
841 case GL_TESS_GEN_MODE:
844 if (check_tes_query(ctx, shProg)) {
845 *params = shProg->_LinkedShaders[MESA_SHADER_TESS_EVAL]->
846 TessEval.PrimitiveMode;
849 case GL_TESS_GEN_SPACING:
852 if (check_tes_query(ctx, shProg)) {
853 *params = shProg->_LinkedShaders[MESA_SHADER_TESS_EVAL]->
857 case GL_TESS_GEN_VERTEX_ORDER:
860 if (check_tes_query(ctx, shProg)) {
861 *params = shProg->_LinkedShaders[MESA_SHADER_TESS_EVAL]->
862 TessEval.VertexOrder;
865 case GL_TESS_GEN_POINT_MODE:
868 if (check_tes_query(ctx, shProg)) {
869 *params = shProg->_LinkedShaders[MESA_SHADER_TESS_EVAL]->
877 _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramiv(pname=%s)",
878 _mesa_enum_to_string(pname));
883 * glGetShaderiv() - get GLSL shader state
886 get_shaderiv(struct gl_context *ctx, GLuint name, GLenum pname, GLint *params)
888 struct gl_shader *shader =
889 _mesa_lookup_shader_err(ctx, name, "glGetShaderiv");
897 *params = shader->Type;
899 case GL_DELETE_STATUS:
900 *params = shader->DeletePending;
902 case GL_COMPILE_STATUS:
903 *params = shader->CompileStatus;
905 case GL_INFO_LOG_LENGTH:
906 *params = shader->InfoLog ? strlen(shader->InfoLog) + 1 : 0;
908 case GL_SHADER_SOURCE_LENGTH:
909 *params = shader->Source ? strlen((char *) shader->Source) + 1 : 0;
912 _mesa_error(ctx, GL_INVALID_ENUM, "glGetShaderiv(pname)");
919 get_program_info_log(struct gl_context *ctx, GLuint program, GLsizei bufSize,
920 GLsizei *length, GLchar *infoLog)
922 struct gl_shader_program *shProg;
924 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
925 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
927 * "If a negative number is provided where an argument of type sizei or
928 * sizeiptr is specified, an INVALID_VALUE error is generated."
931 _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramInfoLog(bufSize < 0)");
935 shProg = _mesa_lookup_shader_program_err(ctx, program,
936 "glGetProgramInfoLog(program)");
941 _mesa_copy_string(infoLog, bufSize, length, shProg->InfoLog);
946 get_shader_info_log(struct gl_context *ctx, GLuint shader, GLsizei bufSize,
947 GLsizei *length, GLchar *infoLog)
949 struct gl_shader *sh;
951 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
952 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
954 * "If a negative number is provided where an argument of type sizei or
955 * sizeiptr is specified, an INVALID_VALUE error is generated."
958 _mesa_error(ctx, GL_INVALID_VALUE, "glGetShaderInfoLog(bufSize < 0)");
962 sh = _mesa_lookup_shader_err(ctx, shader, "glGetShaderInfoLog(shader)");
967 _mesa_copy_string(infoLog, bufSize, length, sh->InfoLog);
972 * Return shader source code.
975 get_shader_source(struct gl_context *ctx, GLuint shader, GLsizei maxLength,
976 GLsizei *length, GLchar *sourceOut)
978 struct gl_shader *sh;
981 _mesa_error(ctx, GL_INVALID_VALUE, "glGetShaderSource(bufSize < 0)");
985 sh = _mesa_lookup_shader_err(ctx, shader, "glGetShaderSource");
989 _mesa_copy_string(sourceOut, maxLength, length, sh->Source);
994 * Set/replace shader source code. A helper function used by
995 * glShaderSource[ARB].
998 shader_source(struct gl_shader *sh, const GLchar *source)
1002 /* free old shader source string and install new one */
1003 free((void *)sh->Source);
1004 sh->Source = source;
1006 sh->SourceChecksum = _mesa_str_checksum(sh->Source);
1015 _mesa_compile_shader(struct gl_context *ctx, struct gl_shader *sh)
1021 /* If the user called glCompileShader without first calling
1022 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
1024 sh->CompileStatus = GL_FALSE;
1026 if (ctx->_Shader->Flags & GLSL_DUMP) {
1027 _mesa_log("GLSL source for %s shader %d:\n",
1028 _mesa_shader_stage_to_string(sh->Stage), sh->Name);
1029 _mesa_log("%s\n", sh->Source);
1032 /* this call will set the shader->CompileStatus field to indicate if
1033 * compilation was successful.
1035 _mesa_glsl_compile_shader(ctx, sh, false, false);
1037 if (ctx->_Shader->Flags & GLSL_LOG) {
1038 _mesa_write_shader_to_file(sh);
1041 if (ctx->_Shader->Flags & GLSL_DUMP) {
1042 if (sh->CompileStatus) {
1043 _mesa_log("GLSL IR for shader %d:\n", sh->Name);
1044 _mesa_print_ir(_mesa_get_log_file(), sh->ir, NULL);
1047 _mesa_log("GLSL shader %d failed to compile.\n", sh->Name);
1049 if (sh->InfoLog && sh->InfoLog[0] != 0) {
1050 _mesa_log("GLSL shader %d info log:\n", sh->Name);
1051 _mesa_log("%s\n", sh->InfoLog);
1056 if (!sh->CompileStatus) {
1057 if (ctx->_Shader->Flags & GLSL_DUMP_ON_ERROR) {
1058 _mesa_log("GLSL source for %s shader %d:\n",
1059 _mesa_shader_stage_to_string(sh->Stage), sh->Name);
1060 _mesa_log("%s\n", sh->Source);
1061 _mesa_log("Info Log:\n%s\n", sh->InfoLog);
1064 if (ctx->_Shader->Flags & GLSL_REPORT_ERRORS) {
1065 _mesa_debug(ctx, "Error compiling shader %u:\n%s\n",
1066 sh->Name, sh->InfoLog);
1073 * Link a program's shaders.
1076 _mesa_link_program(struct gl_context *ctx, struct gl_shader_program *shProg)
1081 /* From the ARB_transform_feedback2 specification:
1082 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1083 * the name of a program being used by one or more transform feedback
1084 * objects, even if the objects are not currently bound or are paused."
1086 if (_mesa_transform_feedback_is_using_program(ctx, shProg)) {
1087 _mesa_error(ctx, GL_INVALID_OPERATION,
1088 "glLinkProgram(transform feedback is using the program)");
1092 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
1094 _mesa_glsl_link_shader(ctx, shProg);
1096 /* Capture .shader_test files. */
1097 const char *capture_path = _mesa_get_shader_capture_path();
1098 if (shProg->Name != 0 && capture_path != NULL) {
1100 char filename[PATH_MAX];
1102 _mesa_snprintf(filename, sizeof(filename), "%s/%u.shader_test",
1103 capture_path, shProg->Name);
1105 file = fopen(filename, "w");
1107 fprintf(file, "[require]\nGLSL%s >= %u.%02u\n",
1108 shProg->IsES ? " ES" : "",
1109 shProg->Version / 100, shProg->Version % 100);
1110 if (shProg->SeparateShader)
1111 fprintf(file, "GL_ARB_separate_shader_objects\nSSO ENABLED\n");
1112 fprintf(file, "\n");
1114 for (unsigned i = 0; i < shProg->NumShaders; i++) {
1115 fprintf(file, "[%s shader]\n%s\n",
1116 _mesa_shader_stage_to_string(shProg->Shaders[i]->Stage),
1117 shProg->Shaders[i]->Source);
1121 _mesa_warning(ctx, "Failed to open %s", filename);
1125 if (shProg->LinkStatus == GL_FALSE &&
1126 (ctx->_Shader->Flags & GLSL_REPORT_ERRORS)) {
1127 _mesa_debug(ctx, "Error linking program %u:\n%s\n",
1128 shProg->Name, shProg->InfoLog);
1135 printf("Link %u shaders in program %u: %s\n",
1136 shProg->NumShaders, shProg->Name,
1137 shProg->LinkStatus ? "Success" : "Failed");
1139 for (i = 0; i < shProg->NumShaders; i++) {
1140 printf(" shader %u, stage %u\n",
1141 shProg->Shaders[i]->Name,
1142 shProg->Shaders[i]->Stage);
1149 * Print basic shader info (for debug).
1152 print_shader_info(const struct gl_shader_program *shProg)
1156 printf("Mesa: glUseProgram(%u)\n", shProg->Name);
1157 for (i = 0; i < shProg->NumShaders; i++) {
1158 printf(" %s shader %u, checksum %u\n",
1159 _mesa_shader_stage_to_string(shProg->Shaders[i]->Stage),
1160 shProg->Shaders[i]->Name,
1161 shProg->Shaders[i]->SourceChecksum);
1163 if (shProg->_LinkedShaders[MESA_SHADER_VERTEX])
1164 printf(" vert prog %u\n",
1165 shProg->_LinkedShaders[MESA_SHADER_VERTEX]->Program->Id);
1166 if (shProg->_LinkedShaders[MESA_SHADER_FRAGMENT])
1167 printf(" frag prog %u\n",
1168 shProg->_LinkedShaders[MESA_SHADER_FRAGMENT]->Program->Id);
1169 if (shProg->_LinkedShaders[MESA_SHADER_GEOMETRY])
1170 printf(" geom prog %u\n",
1171 shProg->_LinkedShaders[MESA_SHADER_GEOMETRY]->Program->Id);
1172 if (shProg->_LinkedShaders[MESA_SHADER_TESS_CTRL])
1173 printf(" tesc prog %u\n",
1174 shProg->_LinkedShaders[MESA_SHADER_TESS_CTRL]->Program->Id);
1175 if (shProg->_LinkedShaders[MESA_SHADER_TESS_EVAL])
1176 printf(" tese prog %u\n",
1177 shProg->_LinkedShaders[MESA_SHADER_TESS_EVAL]->Program->Id);
1182 * Use the named shader program for subsequent glUniform calls
1185 _mesa_active_program(struct gl_context *ctx, struct gl_shader_program *shProg,
1188 if ((shProg != NULL) && !shProg->LinkStatus) {
1189 _mesa_error(ctx, GL_INVALID_OPERATION,
1190 "%s(program %u not linked)", caller, shProg->Name);
1194 if (ctx->Shader.ActiveProgram != shProg) {
1195 _mesa_reference_shader_program(ctx, &ctx->Shader.ActiveProgram, shProg);
1201 use_shader_program(struct gl_context *ctx, gl_shader_stage stage,
1202 struct gl_shader_program *shProg,
1203 struct gl_pipeline_object *shTarget)
1205 struct gl_shader_program **target;
1207 target = &shTarget->CurrentProgram[stage];
1208 if ((shProg != NULL) && (shProg->_LinkedShaders[stage] == NULL))
1212 _mesa_shader_program_init_subroutine_defaults(shProg);
1214 if (*target != shProg) {
1215 /* Program is current, flush it */
1216 if (shTarget == ctx->_Shader) {
1217 FLUSH_VERTICES(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
1220 /* If the shader is also bound as the current rendering shader, unbind
1221 * it from that binding point as well. This ensures that the correct
1222 * semantics of glDeleteProgram are maintained.
1225 case MESA_SHADER_VERTEX:
1226 case MESA_SHADER_TESS_CTRL:
1227 case MESA_SHADER_TESS_EVAL:
1228 case MESA_SHADER_GEOMETRY:
1229 case MESA_SHADER_COMPUTE:
1230 /* Empty for now. */
1232 case MESA_SHADER_FRAGMENT:
1233 if (*target == ctx->_Shader->_CurrentFragmentProgram) {
1234 _mesa_reference_shader_program(ctx,
1235 &ctx->_Shader->_CurrentFragmentProgram,
1241 _mesa_reference_shader_program(ctx, target, shProg);
1248 * Use the named shader program for subsequent rendering.
1251 _mesa_use_program(struct gl_context *ctx, struct gl_shader_program *shProg)
1254 for (i = 0; i < MESA_SHADER_STAGES; i++)
1255 use_shader_program(ctx, i, shProg, &ctx->Shader);
1256 _mesa_active_program(ctx, shProg, "glUseProgram");
1258 if (ctx->Driver.UseProgram)
1259 ctx->Driver.UseProgram(ctx, shProg);
1264 * Do validation of the given shader program.
1265 * \param errMsg returns error message if validation fails.
1266 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1269 validate_shader_program(const struct gl_shader_program *shProg,
1272 if (!shProg->LinkStatus) {
1276 /* From the GL spec, a program is invalid if any of these are true:
1278 any two active samplers in the current program object are of
1279 different types, but refer to the same texture image unit,
1281 any active sampler in the current program object refers to a texture
1282 image unit where fixed-function fragment processing accesses a
1283 texture target that does not match the sampler type, or
1285 the sum of the number of active samplers in the program and the
1286 number of texture image units enabled for fixed-function fragment
1287 processing exceeds the combined limit on the total number of texture
1288 image units allowed.
1292 * Check: any two active samplers in the current program object are of
1293 * different types, but refer to the same texture image unit,
1295 if (!_mesa_sampler_uniforms_are_valid(shProg, errMsg, 100))
1303 * Called via glValidateProgram()
1306 validate_program(struct gl_context *ctx, GLuint program)
1308 struct gl_shader_program *shProg;
1309 char errMsg[100] = "";
1311 shProg = _mesa_lookup_shader_program_err(ctx, program, "glValidateProgram");
1316 shProg->Validated = validate_shader_program(shProg, errMsg);
1317 if (!shProg->Validated) {
1318 /* update info log */
1319 if (shProg->InfoLog) {
1320 ralloc_free(shProg->InfoLog);
1322 shProg->InfoLog = ralloc_strdup(shProg, errMsg);
1329 _mesa_AttachObjectARB(GLhandleARB program, GLhandleARB shader)
1331 GET_CURRENT_CONTEXT(ctx);
1332 attach_shader(ctx, program, shader);
1337 _mesa_AttachShader(GLuint program, GLuint shader)
1339 GET_CURRENT_CONTEXT(ctx);
1340 attach_shader(ctx, program, shader);
1345 _mesa_CompileShader(GLuint shaderObj)
1347 GET_CURRENT_CONTEXT(ctx);
1348 if (MESA_VERBOSE & VERBOSE_API)
1349 _mesa_debug(ctx, "glCompileShader %u\n", shaderObj);
1350 _mesa_compile_shader(ctx, _mesa_lookup_shader_err(ctx, shaderObj,
1351 "glCompileShader"));
1356 _mesa_CreateShader(GLenum type)
1358 GET_CURRENT_CONTEXT(ctx);
1359 if (MESA_VERBOSE & VERBOSE_API)
1360 _mesa_debug(ctx, "glCreateShader %s\n", _mesa_enum_to_string(type));
1361 return create_shader(ctx, type);
1365 GLhandleARB GLAPIENTRY
1366 _mesa_CreateShaderObjectARB(GLenum type)
1368 GET_CURRENT_CONTEXT(ctx);
1369 return create_shader(ctx, type);
1374 _mesa_CreateProgram(void)
1376 GET_CURRENT_CONTEXT(ctx);
1377 if (MESA_VERBOSE & VERBOSE_API)
1378 _mesa_debug(ctx, "glCreateProgram\n");
1379 return create_shader_program(ctx);
1383 GLhandleARB GLAPIENTRY
1384 _mesa_CreateProgramObjectARB(void)
1386 GET_CURRENT_CONTEXT(ctx);
1387 return create_shader_program(ctx);
1392 _mesa_DeleteObjectARB(GLhandleARB obj)
1394 if (MESA_VERBOSE & VERBOSE_API) {
1395 GET_CURRENT_CONTEXT(ctx);
1396 _mesa_debug(ctx, "glDeleteObjectARB(%lu)\n", (unsigned long)obj);
1400 GET_CURRENT_CONTEXT(ctx);
1401 FLUSH_VERTICES(ctx, 0);
1402 if (is_program(ctx, obj)) {
1403 delete_shader_program(ctx, obj);
1405 else if (is_shader(ctx, obj)) {
1406 delete_shader(ctx, obj);
1416 _mesa_DeleteProgram(GLuint name)
1419 GET_CURRENT_CONTEXT(ctx);
1420 FLUSH_VERTICES(ctx, 0);
1421 delete_shader_program(ctx, name);
1427 _mesa_DeleteShader(GLuint name)
1430 GET_CURRENT_CONTEXT(ctx);
1431 FLUSH_VERTICES(ctx, 0);
1432 delete_shader(ctx, name);
1438 _mesa_DetachObjectARB(GLhandleARB program, GLhandleARB shader)
1440 GET_CURRENT_CONTEXT(ctx);
1441 detach_shader(ctx, program, shader);
1446 _mesa_DetachShader(GLuint program, GLuint shader)
1448 GET_CURRENT_CONTEXT(ctx);
1449 detach_shader(ctx, program, shader);
1454 _mesa_GetAttachedObjectsARB(GLhandleARB container, GLsizei maxCount,
1455 GLsizei * count, GLhandleARB * obj)
1457 GET_CURRENT_CONTEXT(ctx);
1458 get_attached_shaders(ctx, container, maxCount, count, obj);
1463 _mesa_GetAttachedShaders(GLuint program, GLsizei maxCount,
1464 GLsizei *count, GLuint *obj)
1466 GET_CURRENT_CONTEXT(ctx);
1467 get_attached_shaders(ctx, program, maxCount, count, obj);
1472 _mesa_GetInfoLogARB(GLhandleARB object, GLsizei maxLength, GLsizei * length,
1473 GLcharARB * infoLog)
1475 GET_CURRENT_CONTEXT(ctx);
1476 if (is_program(ctx, object)) {
1477 get_program_info_log(ctx, object, maxLength, length, infoLog);
1479 else if (is_shader(ctx, object)) {
1480 get_shader_info_log(ctx, object, maxLength, length, infoLog);
1483 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetInfoLogARB");
1489 _mesa_GetObjectParameterivARB(GLhandleARB object, GLenum pname, GLint *params)
1491 GET_CURRENT_CONTEXT(ctx);
1492 /* Implement in terms of GetProgramiv, GetShaderiv */
1493 if (is_program(ctx, object)) {
1494 if (pname == GL_OBJECT_TYPE_ARB) {
1495 *params = GL_PROGRAM_OBJECT_ARB;
1498 get_programiv(ctx, object, pname, params);
1501 else if (is_shader(ctx, object)) {
1502 if (pname == GL_OBJECT_TYPE_ARB) {
1503 *params = GL_SHADER_OBJECT_ARB;
1506 get_shaderiv(ctx, object, pname, params);
1510 _mesa_error(ctx, GL_INVALID_VALUE, "glGetObjectParameterivARB");
1516 _mesa_GetObjectParameterfvARB(GLhandleARB object, GLenum pname,
1519 GLint iparams[1] = {0}; /* XXX is one element enough? */
1520 _mesa_GetObjectParameterivARB(object, pname, iparams);
1521 params[0] = (GLfloat) iparams[0];
1526 _mesa_GetProgramiv(GLuint program, GLenum pname, GLint *params)
1528 GET_CURRENT_CONTEXT(ctx);
1529 get_programiv(ctx, program, pname, params);
1534 _mesa_GetShaderiv(GLuint shader, GLenum pname, GLint *params)
1536 GET_CURRENT_CONTEXT(ctx);
1537 get_shaderiv(ctx, shader, pname, params);
1542 _mesa_GetProgramInfoLog(GLuint program, GLsizei bufSize,
1543 GLsizei *length, GLchar *infoLog)
1545 GET_CURRENT_CONTEXT(ctx);
1546 get_program_info_log(ctx, program, bufSize, length, infoLog);
1551 _mesa_GetShaderInfoLog(GLuint shader, GLsizei bufSize,
1552 GLsizei *length, GLchar *infoLog)
1554 GET_CURRENT_CONTEXT(ctx);
1555 get_shader_info_log(ctx, shader, bufSize, length, infoLog);
1560 _mesa_GetShaderSource(GLuint shader, GLsizei maxLength,
1561 GLsizei *length, GLchar *sourceOut)
1563 GET_CURRENT_CONTEXT(ctx);
1564 get_shader_source(ctx, shader, maxLength, length, sourceOut);
1568 GLhandleARB GLAPIENTRY
1569 _mesa_GetHandleARB(GLenum pname)
1571 GET_CURRENT_CONTEXT(ctx);
1572 return get_handle(ctx, pname);
1576 GLboolean GLAPIENTRY
1577 _mesa_IsProgram(GLuint name)
1579 GET_CURRENT_CONTEXT(ctx);
1580 return is_program(ctx, name);
1584 GLboolean GLAPIENTRY
1585 _mesa_IsShader(GLuint name)
1587 GET_CURRENT_CONTEXT(ctx);
1588 return is_shader(ctx, name);
1593 _mesa_LinkProgram(GLuint programObj)
1595 GET_CURRENT_CONTEXT(ctx);
1596 if (MESA_VERBOSE & VERBOSE_API)
1597 _mesa_debug(ctx, "glLinkProgram %u\n", programObj);
1598 _mesa_link_program(ctx, _mesa_lookup_shader_program_err(ctx, programObj,
1602 #if defined(HAVE_SHA1)
1604 * Generate a SHA-1 hash value string for given source string.
1607 generate_sha1(const char *source, char sha_str[64])
1609 unsigned char sha[20];
1610 _mesa_sha1_compute(source, strlen(source), sha);
1611 _mesa_sha1_format(sha_str, sha);
1615 * Construct a full path for shader replacement functionality using
1618 * <path>/<stage prefix>_<CHECKSUM>.glsl
1621 construct_name(const gl_shader_stage stage, const char *source,
1622 const char *path, char *name, unsigned length)
1625 static const char *types[] = {
1626 "VS", "TC", "TE", "GS", "FS", "CS",
1629 generate_sha1(source, sha);
1630 _mesa_snprintf(name, length, "%s/%s_%s.glsl", path, types[stage],
1635 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1638 dump_shader(const gl_shader_stage stage, const char *source)
1640 char name[PATH_MAX];
1641 static bool path_exists = true;
1648 dump_path = getenv("MESA_SHADER_DUMP_PATH");
1650 path_exists = false;
1654 construct_name(stage, source, dump_path, name, PATH_MAX);
1656 f = fopen(name, "w");
1661 GET_CURRENT_CONTEXT(ctx);
1662 _mesa_warning(ctx, "could not open %s for dumping shader (%s)", name,
1668 * Read shader source code from a file.
1669 * Useful for debugging to override an app's shader.
1672 read_shader(const gl_shader_stage stage, const char *source)
1674 char name[PATH_MAX];
1676 static bool path_exists = true;
1677 int len, shader_size = 0;
1684 read_path = getenv("MESA_SHADER_READ_PATH");
1686 path_exists = false;
1690 construct_name(stage, source, read_path, name, PATH_MAX);
1692 f = fopen(name, "r");
1696 /* allocate enough room for the entire shader */
1697 fseek(f, 0, SEEK_END);
1698 shader_size = ftell(f);
1700 assert(shader_size);
1702 /* add one for terminating zero */
1705 buffer = malloc(shader_size);
1708 len = fread(buffer, 1, shader_size, f);
1715 #endif /* HAVE_SHA1 */
1718 * Called via glShaderSource() and glShaderSourceARB() API functions.
1719 * Basically, concatenate the source code strings into one long string
1720 * and pass it to _mesa_shader_source().
1723 _mesa_ShaderSource(GLuint shaderObj, GLsizei count,
1724 const GLchar * const * string, const GLint * length)
1726 GET_CURRENT_CONTEXT(ctx);
1728 GLsizei i, totalLength;
1730 struct gl_shader *sh;
1732 #if defined(HAVE_SHA1)
1733 GLcharARB *replacement;
1734 #endif /* HAVE_SHA1 */
1736 sh = _mesa_lookup_shader_err(ctx, shaderObj, "glShaderSourceARB");
1740 if (string == NULL) {
1741 _mesa_error(ctx, GL_INVALID_VALUE, "glShaderSourceARB");
1746 * This array holds offsets of where the appropriate string ends, thus the
1747 * last element will be set to the total length of the source code.
1749 offsets = malloc(count * sizeof(GLint));
1750 if (offsets == NULL) {
1751 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glShaderSourceARB");
1755 for (i = 0; i < count; i++) {
1756 if (string[i] == NULL) {
1757 free((GLvoid *) offsets);
1758 _mesa_error(ctx, GL_INVALID_OPERATION,
1759 "glShaderSourceARB(null string)");
1762 if (length == NULL || length[i] < 0)
1763 offsets[i] = strlen(string[i]);
1765 offsets[i] = length[i];
1766 /* accumulate string lengths */
1768 offsets[i] += offsets[i - 1];
1771 /* Total length of source string is sum off all strings plus two.
1772 * One extra byte for terminating zero, another extra byte to silence
1773 * valgrind warnings in the parser/grammer code.
1775 totalLength = offsets[count - 1] + 2;
1776 source = malloc(totalLength * sizeof(GLcharARB));
1777 if (source == NULL) {
1778 free((GLvoid *) offsets);
1779 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glShaderSourceARB");
1783 for (i = 0; i < count; i++) {
1784 GLint start = (i > 0) ? offsets[i - 1] : 0;
1785 memcpy(source + start, string[i],
1786 (offsets[i] - start) * sizeof(GLcharARB));
1788 source[totalLength - 1] = '\0';
1789 source[totalLength - 2] = '\0';
1791 #if defined(HAVE_SHA1)
1792 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1793 * if corresponding entry found from MESA_SHADER_READ_PATH.
1795 dump_shader(sh->Stage, source);
1797 replacement = read_shader(sh->Stage, source);
1800 source = replacement;
1802 #endif /* HAVE_SHA1 */
1804 shader_source(sh, source);
1811 _mesa_UseProgram(GLuint program)
1813 GET_CURRENT_CONTEXT(ctx);
1814 struct gl_shader_program *shProg;
1816 if (MESA_VERBOSE & VERBOSE_API)
1817 _mesa_debug(ctx, "glUseProgram %u\n", program);
1819 if (_mesa_is_xfb_active_and_unpaused(ctx)) {
1820 _mesa_error(ctx, GL_INVALID_OPERATION,
1821 "glUseProgram(transform feedback active)");
1826 shProg = _mesa_lookup_shader_program_err(ctx, program, "glUseProgram");
1830 if (!shProg->LinkStatus) {
1831 _mesa_error(ctx, GL_INVALID_OPERATION,
1832 "glUseProgram(program %u not linked)", program);
1837 if (ctx->_Shader->Flags & GLSL_USE_PROG) {
1838 print_shader_info(shProg);
1845 /* The ARB_separate_shader_object spec says:
1847 * "The executable code for an individual shader stage is taken from
1848 * the current program for that stage. If there is a current program
1849 * object established by UseProgram, that program is considered current
1850 * for all stages. Otherwise, if there is a bound program pipeline
1851 * object (section 2.14.PPO), the program bound to the appropriate
1852 * stage of the pipeline object is considered current."
1855 /* Attach shader state to the binding point */
1856 _mesa_reference_pipeline_object(ctx, &ctx->_Shader, &ctx->Shader);
1857 /* Update the program */
1858 _mesa_use_program(ctx, shProg);
1860 /* Must be done first: detach the progam */
1861 _mesa_use_program(ctx, shProg);
1862 /* Unattach shader_state binding point */
1863 _mesa_reference_pipeline_object(ctx, &ctx->_Shader, ctx->Pipeline.Default);
1864 /* If a pipeline was bound, rebind it */
1865 if (ctx->Pipeline.Current) {
1866 _mesa_BindProgramPipeline(ctx->Pipeline.Current->Name);
1873 _mesa_ValidateProgram(GLuint program)
1875 GET_CURRENT_CONTEXT(ctx);
1876 validate_program(ctx, program);
1881 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1884 _mesa_GetShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype,
1885 GLint* range, GLint* precision)
1887 const struct gl_program_constants *limits;
1888 const struct gl_precision *p;
1889 GET_CURRENT_CONTEXT(ctx);
1891 switch (shadertype) {
1892 case GL_VERTEX_SHADER:
1893 limits = &ctx->Const.Program[MESA_SHADER_VERTEX];
1895 case GL_FRAGMENT_SHADER:
1896 limits = &ctx->Const.Program[MESA_SHADER_FRAGMENT];
1899 _mesa_error(ctx, GL_INVALID_ENUM,
1900 "glGetShaderPrecisionFormat(shadertype)");
1904 switch (precisiontype) {
1906 p = &limits->LowFloat;
1908 case GL_MEDIUM_FLOAT:
1909 p = &limits->MediumFloat;
1912 p = &limits->HighFloat;
1915 p = &limits->LowInt;
1918 p = &limits->MediumInt;
1921 p = &limits->HighInt;
1924 _mesa_error(ctx, GL_INVALID_ENUM,
1925 "glGetShaderPrecisionFormat(precisiontype)");
1929 range[0] = p->RangeMin;
1930 range[1] = p->RangeMax;
1931 precision[0] = p->Precision;
1936 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1939 _mesa_ReleaseShaderCompiler(void)
1941 _mesa_destroy_shader_compiler_caches();
1946 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1949 _mesa_ShaderBinary(GLint n, const GLuint* shaders, GLenum binaryformat,
1950 const void* binary, GLint length)
1952 GET_CURRENT_CONTEXT(ctx);
1954 (void) binaryformat;
1957 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1958 * page 88 of the OpenGL 4.5 specs state:
1960 * "An INVALID_VALUE error is generated if count or length is negative.
1961 * An INVALID_ENUM error is generated if binaryformat is not a supported
1962 * format returned in SHADER_BINARY_FORMATS."
1964 if (n < 0 || length < 0) {
1965 _mesa_error(ctx, GL_INVALID_VALUE, "glShaderBinary(count or length < 0)");
1969 _mesa_error(ctx, GL_INVALID_ENUM, "glShaderBinary(format)");
1974 _mesa_GetProgramBinary(GLuint program, GLsizei bufSize, GLsizei *length,
1975 GLenum *binaryFormat, GLvoid *binary)
1977 struct gl_shader_program *shProg;
1978 GLsizei length_dummy;
1979 GET_CURRENT_CONTEXT(ctx);
1982 _mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramBinary(bufSize < 0)");
1986 shProg = _mesa_lookup_shader_program_err(ctx, program, "glGetProgramBinary");
1990 /* The ARB_get_program_binary spec says:
1992 * "If <length> is NULL, then no length is returned."
1994 * Ensure that length always points to valid storage to avoid multiple NULL
1995 * pointer checks below.
1998 length = &length_dummy;
2001 /* The ARB_get_program_binary spec says:
2003 * "When a program object's LINK_STATUS is FALSE, its program binary
2004 * length is zero, and a call to GetProgramBinary will generate an
2005 * INVALID_OPERATION error.
2007 if (!shProg->LinkStatus) {
2008 _mesa_error(ctx, GL_INVALID_OPERATION,
2009 "glGetProgramBinary(program %u not linked)",
2016 _mesa_error(ctx, GL_INVALID_OPERATION,
2017 "glGetProgramBinary(driver supports zero binary formats)");
2019 (void) binaryFormat;
2024 _mesa_ProgramBinary(GLuint program, GLenum binaryFormat,
2025 const GLvoid *binary, GLsizei length)
2027 struct gl_shader_program *shProg;
2028 GET_CURRENT_CONTEXT(ctx);
2030 shProg = _mesa_lookup_shader_program_err(ctx, program, "glProgramBinary");
2034 (void) binaryFormat;
2037 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2039 * "If a negative number is provided where an argument of type sizei or
2040 * sizeiptr is specified, an INVALID_VALUE error is generated."
2043 _mesa_error(ctx, GL_INVALID_VALUE, "glProgramBinary(length < 0)");
2047 /* The ARB_get_program_binary spec says:
2049 * "<binaryFormat> and <binary> must be those returned by a previous
2050 * call to GetProgramBinary, and <length> must be the length of the
2051 * program binary as returned by GetProgramBinary or GetProgramiv with
2052 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2053 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2056 * Since any value of binaryFormat passed "is not one of those specified as
2057 * allowable for [this] command, an INVALID_ENUM error is generated."
2059 shProg->LinkStatus = GL_FALSE;
2060 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramBinary");
2065 _mesa_ProgramParameteri(GLuint program, GLenum pname, GLint value)
2067 struct gl_shader_program *shProg;
2068 GET_CURRENT_CONTEXT(ctx);
2070 shProg = _mesa_lookup_shader_program_err(ctx, program,
2071 "glProgramParameteri");
2076 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT:
2077 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2078 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2079 * even be in the dispatch table, so we shouldn't need to expclicitly
2082 * On desktop, we ignore the 3.0+ requirement because it is silly.
2085 /* The ARB_get_program_binary extension spec says:
2087 * "An INVALID_VALUE error is generated if the <value> argument to
2088 * ProgramParameteri is not TRUE or FALSE."
2090 if (value != GL_TRUE && value != GL_FALSE) {
2094 /* No need to notify the driver. Any changes will actually take effect
2095 * the next time the shader is linked.
2097 * The ARB_get_program_binary extension spec says:
2099 * "To indicate that a program binary is likely to be retrieved,
2100 * ProgramParameteri should be called with <pname>
2101 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2102 * will not be in effect until the next time LinkProgram or
2103 * ProgramBinary has been called successfully."
2105 * The resloution of issue 9 in the extension spec also says:
2107 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2108 * to indicate to the GL implementation that this program will
2109 * likely be saved with GetProgramBinary at some point. This will
2110 * give the GL implementation the opportunity to track any state
2111 * changes made to the program before being saved such that when it
2112 * is loaded again a recompile can be avoided."
2114 shProg->BinaryRetreivableHint = value;
2117 case GL_PROGRAM_SEPARABLE:
2118 /* Spec imply that the behavior is the same as ARB_get_program_binary
2119 * Chapter 7.3 Program Objects
2121 if (value != GL_TRUE && value != GL_FALSE) {
2124 shProg->SeparateShader = value;
2128 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramParameteri(pname=%s)",
2129 _mesa_enum_to_string(pname));
2134 _mesa_error(ctx, GL_INVALID_VALUE,
2135 "glProgramParameteri(pname=%s, value=%d): "
2136 "value must be 0 or 1.",
2137 _mesa_enum_to_string(pname),
2143 _mesa_use_shader_program(struct gl_context *ctx, GLenum type,
2144 struct gl_shader_program *shProg,
2145 struct gl_pipeline_object *shTarget)
2147 gl_shader_stage stage = _mesa_shader_enum_to_shader_stage(type);
2148 use_shader_program(ctx, stage, shProg, shTarget);
2150 if (ctx->Driver.UseProgram)
2151 ctx->Driver.UseProgram(ctx, shProg);
2156 * Copy program-specific data generated by linking from the gl_shader_program
2157 * object to a specific gl_program object.
2160 _mesa_copy_linked_program_data(gl_shader_stage type,
2161 const struct gl_shader_program *src,
2162 struct gl_program *dst)
2165 case MESA_SHADER_VERTEX:
2166 dst->ClipDistanceArraySize = src->Vert.ClipDistanceArraySize;
2167 dst->CullDistanceArraySize = src->Vert.CullDistanceArraySize;
2169 case MESA_SHADER_TESS_CTRL: {
2170 struct gl_tess_ctrl_program *dst_tcp =
2171 (struct gl_tess_ctrl_program *) dst;
2172 dst_tcp->VerticesOut =
2173 src->_LinkedShaders[MESA_SHADER_TESS_CTRL]->TessCtrl.VerticesOut;
2176 case MESA_SHADER_TESS_EVAL: {
2177 struct gl_tess_eval_program *dst_tep =
2178 (struct gl_tess_eval_program *) dst;
2179 struct gl_shader *tes_sh = src->_LinkedShaders[MESA_SHADER_TESS_EVAL];
2181 dst_tep->PrimitiveMode = tes_sh->TessEval.PrimitiveMode;
2182 dst_tep->Spacing = tes_sh->TessEval.Spacing;
2183 dst_tep->VertexOrder = tes_sh->TessEval.VertexOrder;
2184 dst_tep->PointMode = tes_sh->TessEval.PointMode;
2185 dst->ClipDistanceArraySize = src->TessEval.ClipDistanceArraySize;
2186 dst->CullDistanceArraySize = src->TessEval.CullDistanceArraySize;
2189 case MESA_SHADER_GEOMETRY: {
2190 struct gl_geometry_program *dst_gp = (struct gl_geometry_program *) dst;
2191 struct gl_shader *geom_sh = src->_LinkedShaders[MESA_SHADER_GEOMETRY];
2193 dst_gp->VerticesIn = src->Geom.VerticesIn;
2194 dst_gp->VerticesOut = geom_sh->Geom.VerticesOut;
2195 dst_gp->Invocations = geom_sh->Geom.Invocations;
2196 dst_gp->InputType = geom_sh->Geom.InputType;
2197 dst_gp->OutputType = geom_sh->Geom.OutputType;
2198 dst->ClipDistanceArraySize = src->Geom.ClipDistanceArraySize;
2199 dst->CullDistanceArraySize = src->Geom.CullDistanceArraySize;
2200 dst_gp->UsesEndPrimitive = src->Geom.UsesEndPrimitive;
2201 dst_gp->UsesStreams = src->Geom.UsesStreams;
2204 case MESA_SHADER_FRAGMENT: {
2205 struct gl_fragment_program *dst_fp = (struct gl_fragment_program *) dst;
2206 dst_fp->FragDepthLayout = src->FragDepthLayout;
2209 case MESA_SHADER_COMPUTE: {
2210 struct gl_compute_program *dst_cp = (struct gl_compute_program *) dst;
2212 for (i = 0; i < 3; i++)
2213 dst_cp->LocalSize[i] = src->Comp.LocalSize[i];
2214 dst_cp->SharedSize = src->Comp.SharedSize;
2223 * ARB_separate_shader_objects: Compile & Link Program
2226 _mesa_CreateShaderProgramv(GLenum type, GLsizei count,
2227 const GLchar* const *strings)
2229 GET_CURRENT_CONTEXT(ctx);
2231 const GLuint shader = create_shader(ctx, type);
2235 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2236 * GL_INVALID_VALUE should be generated if count < 0
2239 _mesa_error(ctx, GL_INVALID_VALUE, "glCreateShaderProgram (count < 0)");
2244 struct gl_shader *sh = _mesa_lookup_shader(ctx, shader);
2246 _mesa_ShaderSource(shader, count, strings, NULL);
2247 _mesa_compile_shader(ctx, sh);
2249 program = create_shader_program(ctx);
2251 struct gl_shader_program *shProg;
2252 GLint compiled = GL_FALSE;
2254 shProg = _mesa_lookup_shader_program(ctx, program);
2256 shProg->SeparateShader = GL_TRUE;
2258 get_shaderiv(ctx, shader, GL_COMPILE_STATUS, &compiled);
2260 attach_shader(ctx, program, shader);
2261 _mesa_link_program(ctx, shProg);
2262 detach_shader(ctx, program, shader);
2266 if (active-user-defined-varyings-in-linked-program) {
2267 append-error-to-info-log;
2268 shProg->LinkStatus = GL_FALSE;
2273 ralloc_strcat(&shProg->InfoLog, sh->InfoLog);
2276 delete_shader(ctx, shader);
2284 * For GL_ARB_tessellation_shader
2286 extern void GLAPIENTRY
2287 _mesa_PatchParameteri(GLenum pname, GLint value)
2289 GET_CURRENT_CONTEXT(ctx);
2291 if (!_mesa_has_tessellation(ctx)) {
2292 _mesa_error(ctx, GL_INVALID_OPERATION, "glPatchParameteri");
2296 if (pname != GL_PATCH_VERTICES) {
2297 _mesa_error(ctx, GL_INVALID_ENUM, "glPatchParameteri");
2301 if (value <= 0 || value > ctx->Const.MaxPatchVertices) {
2302 _mesa_error(ctx, GL_INVALID_VALUE, "glPatchParameteri");
2306 ctx->TessCtrlProgram.patch_vertices = value;
2310 extern void GLAPIENTRY
2311 _mesa_PatchParameterfv(GLenum pname, const GLfloat *values)
2313 GET_CURRENT_CONTEXT(ctx);
2315 if (!_mesa_has_tessellation(ctx)) {
2316 _mesa_error(ctx, GL_INVALID_OPERATION, "glPatchParameterfv");
2321 case GL_PATCH_DEFAULT_OUTER_LEVEL:
2322 FLUSH_VERTICES(ctx, 0);
2323 memcpy(ctx->TessCtrlProgram.patch_default_outer_level, values,
2324 4 * sizeof(GLfloat));
2325 ctx->NewDriverState |= ctx->DriverFlags.NewDefaultTessLevels;
2327 case GL_PATCH_DEFAULT_INNER_LEVEL:
2328 FLUSH_VERTICES(ctx, 0);
2329 memcpy(ctx->TessCtrlProgram.patch_default_inner_level, values,
2330 2 * sizeof(GLfloat));
2331 ctx->NewDriverState |= ctx->DriverFlags.NewDefaultTessLevels;
2334 _mesa_error(ctx, GL_INVALID_ENUM, "glPatchParameterfv");
2340 * ARB_shader_subroutine
2343 _mesa_GetSubroutineUniformLocation(GLuint program, GLenum shadertype,
2346 GET_CURRENT_CONTEXT(ctx);
2347 const char *api_name = "glGetSubroutineUniformLocation";
2348 struct gl_shader_program *shProg;
2349 GLenum resource_type;
2350 gl_shader_stage stage;
2352 if (!_mesa_has_shader_subroutine(ctx)) {
2353 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2357 if (!_mesa_validate_shader_target(ctx, shadertype)) {
2358 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2362 shProg = _mesa_lookup_shader_program_err(ctx, program, api_name);
2366 stage = _mesa_shader_enum_to_shader_stage(shadertype);
2367 if (!shProg->_LinkedShaders[stage]) {
2368 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2372 resource_type = _mesa_shader_stage_to_subroutine_uniform(stage);
2373 return _mesa_program_resource_location(shProg, resource_type, name);
2377 _mesa_GetSubroutineIndex(GLuint program, GLenum shadertype,
2380 GET_CURRENT_CONTEXT(ctx);
2381 const char *api_name = "glGetSubroutineIndex";
2382 struct gl_shader_program *shProg;
2383 struct gl_program_resource *res;
2384 GLenum resource_type;
2385 gl_shader_stage stage;
2387 if (!_mesa_has_shader_subroutine(ctx)) {
2388 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2392 if (!_mesa_validate_shader_target(ctx, shadertype)) {
2393 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2397 shProg = _mesa_lookup_shader_program_err(ctx, program, api_name);
2401 stage = _mesa_shader_enum_to_shader_stage(shadertype);
2402 if (!shProg->_LinkedShaders[stage]) {
2403 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2407 resource_type = _mesa_shader_stage_to_subroutine(stage);
2408 res = _mesa_program_resource_find_name(shProg, resource_type, name, NULL);
2413 return _mesa_program_resource_index(shProg, res);
2418 _mesa_GetActiveSubroutineUniformiv(GLuint program, GLenum shadertype,
2419 GLuint index, GLenum pname, GLint *values)
2421 GET_CURRENT_CONTEXT(ctx);
2422 const char *api_name = "glGetActiveSubroutineUniformiv";
2423 struct gl_shader_program *shProg;
2424 struct gl_shader *sh;
2425 gl_shader_stage stage;
2426 struct gl_program_resource *res;
2427 const struct gl_uniform_storage *uni;
2428 GLenum resource_type;
2431 if (!_mesa_has_shader_subroutine(ctx)) {
2432 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2436 if (!_mesa_validate_shader_target(ctx, shadertype)) {
2437 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2441 shProg = _mesa_lookup_shader_program_err(ctx, program, api_name);
2445 stage = _mesa_shader_enum_to_shader_stage(shadertype);
2446 resource_type = _mesa_shader_stage_to_subroutine_uniform(stage);
2448 sh = shProg->_LinkedShaders[stage];
2450 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2454 if (index >= sh->NumSubroutineUniforms) {
2455 _mesa_error(ctx, GL_INVALID_VALUE, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name);
2460 case GL_NUM_COMPATIBLE_SUBROUTINES: {
2461 res = _mesa_program_resource_find_index(shProg, resource_type, index);
2464 values[0] = uni->num_compatible_subroutines;
2468 case GL_COMPATIBLE_SUBROUTINES: {
2469 res = _mesa_program_resource_find_index(shProg, resource_type, index);
2473 for (i = 0; i < sh->NumSubroutineFunctions; i++) {
2474 struct gl_subroutine_function *fn = &sh->SubroutineFunctions[i];
2475 for (j = 0; j < fn->num_compat_types; j++) {
2476 if (fn->types[j] == uni->type) {
2477 values[count++] = i;
2485 case GL_UNIFORM_SIZE:
2486 res = _mesa_program_resource_find_index(shProg, resource_type, index);
2489 values[0] = uni->array_elements ? uni->array_elements : 1;
2492 case GL_UNIFORM_NAME_LENGTH:
2493 res = _mesa_program_resource_find_index(shProg, resource_type, index);
2495 values[0] = strlen(_mesa_program_resource_name(res)) + 1
2496 + ((_mesa_program_resource_array_size(res) != 0) ? 3 : 0);
2500 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2507 _mesa_GetActiveSubroutineUniformName(GLuint program, GLenum shadertype,
2508 GLuint index, GLsizei bufsize,
2509 GLsizei *length, GLchar *name)
2511 GET_CURRENT_CONTEXT(ctx);
2512 const char *api_name = "glGetActiveSubroutineUniformName";
2513 struct gl_shader_program *shProg;
2514 GLenum resource_type;
2515 gl_shader_stage stage;
2517 if (!_mesa_has_shader_subroutine(ctx)) {
2518 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2522 if (!_mesa_validate_shader_target(ctx, shadertype)) {
2523 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2527 shProg = _mesa_lookup_shader_program_err(ctx, program, api_name);
2531 stage = _mesa_shader_enum_to_shader_stage(shadertype);
2532 if (!shProg->_LinkedShaders[stage]) {
2533 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2537 resource_type = _mesa_shader_stage_to_subroutine_uniform(stage);
2538 /* get program resource name */
2539 _mesa_get_program_resource_name(shProg, resource_type,
2541 length, name, api_name);
2546 _mesa_GetActiveSubroutineName(GLuint program, GLenum shadertype,
2547 GLuint index, GLsizei bufsize,
2548 GLsizei *length, GLchar *name)
2550 GET_CURRENT_CONTEXT(ctx);
2551 const char *api_name = "glGetActiveSubroutineName";
2552 struct gl_shader_program *shProg;
2553 GLenum resource_type;
2554 gl_shader_stage stage;
2556 if (!_mesa_has_shader_subroutine(ctx)) {
2557 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2561 if (!_mesa_validate_shader_target(ctx, shadertype)) {
2562 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2566 shProg = _mesa_lookup_shader_program_err(ctx, program, api_name);
2570 stage = _mesa_shader_enum_to_shader_stage(shadertype);
2571 if (!shProg->_LinkedShaders[stage]) {
2572 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2575 resource_type = _mesa_shader_stage_to_subroutine(stage);
2576 _mesa_get_program_resource_name(shProg, resource_type,
2578 length, name, api_name);
2583 _mesa_UniformSubroutinesuiv(GLenum shadertype, GLsizei count,
2584 const GLuint *indices)
2586 GET_CURRENT_CONTEXT(ctx);
2587 const char *api_name = "glUniformSubroutinesuiv";
2588 struct gl_shader_program *shProg;
2589 struct gl_shader *sh;
2590 gl_shader_stage stage;
2593 if (!_mesa_has_shader_subroutine(ctx)) {
2594 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2598 if (!_mesa_validate_shader_target(ctx, shadertype)) {
2599 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2603 stage = _mesa_shader_enum_to_shader_stage(shadertype);
2604 shProg = ctx->_Shader->CurrentProgram[stage];
2606 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2610 sh = shProg->_LinkedShaders[stage];
2612 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2616 if (count != sh->NumSubroutineUniformRemapTable) {
2617 _mesa_error(ctx, GL_INVALID_VALUE, "%s", api_name);
2623 struct gl_uniform_storage *uni = sh->SubroutineUniformRemapTable[i];
2629 int uni_count = uni->array_elements ? uni->array_elements : 1;
2632 for (j = i; j < i + uni_count; j++) {
2633 struct gl_subroutine_function *subfn = NULL;
2634 if (indices[j] > sh->MaxSubroutineFunctionIndex) {
2635 _mesa_error(ctx, GL_INVALID_VALUE, "%s", api_name);
2639 for (f = 0; f < sh->NumSubroutineFunctions; f++) {
2640 if (sh->SubroutineFunctions[f].index == indices[j])
2641 subfn = &sh->SubroutineFunctions[f];
2648 for (k = 0; k < subfn->num_compat_types; k++) {
2649 if (subfn->types[k] == uni->type)
2652 if (k == subfn->num_compat_types) {
2653 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2660 FLUSH_VERTICES(ctx, _NEW_PROGRAM_CONSTANTS);
2663 struct gl_uniform_storage *uni = sh->SubroutineUniformRemapTable[i];
2669 int uni_count = uni->array_elements ? uni->array_elements : 1;
2671 memcpy(&uni->storage[0], &indices[i],
2672 sizeof(GLuint) * uni_count);
2674 _mesa_propagate_uniforms_to_driver_storage(uni, 0, uni_count);
2681 _mesa_GetUniformSubroutineuiv(GLenum shadertype, GLint location,
2684 GET_CURRENT_CONTEXT(ctx);
2685 const char *api_name = "glGetUniformSubroutineuiv";
2686 struct gl_shader_program *shProg;
2687 struct gl_shader *sh;
2688 gl_shader_stage stage;
2690 if (!_mesa_has_shader_subroutine(ctx)) {
2691 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2695 if (!_mesa_validate_shader_target(ctx, shadertype)) {
2696 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2700 stage = _mesa_shader_enum_to_shader_stage(shadertype);
2701 shProg = ctx->_Shader->CurrentProgram[stage];
2703 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2707 sh = shProg->_LinkedShaders[stage];
2709 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2713 if (location >= sh->NumSubroutineUniformRemapTable) {
2714 _mesa_error(ctx, GL_INVALID_VALUE, "%s", api_name);
2719 struct gl_uniform_storage *uni = sh->SubroutineUniformRemapTable[location];
2720 int offset = location - uni->opaque[stage].index;
2721 memcpy(params, &uni->storage[offset],
2728 _mesa_GetProgramStageiv(GLuint program, GLenum shadertype,
2729 GLenum pname, GLint *values)
2731 GET_CURRENT_CONTEXT(ctx);
2732 const char *api_name = "glGetProgramStageiv";
2733 struct gl_shader_program *shProg;
2734 struct gl_shader *sh;
2735 gl_shader_stage stage;
2737 if (!_mesa_has_shader_subroutine(ctx)) {
2738 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2742 if (!_mesa_validate_shader_target(ctx, shadertype)) {
2743 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2747 shProg = _mesa_lookup_shader_program_err(ctx, program, api_name);
2751 stage = _mesa_shader_enum_to_shader_stage(shadertype);
2752 sh = shProg->_LinkedShaders[stage];
2754 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", api_name);
2759 case GL_ACTIVE_SUBROUTINES:
2760 values[0] = sh->NumSubroutineFunctions;
2762 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS:
2763 values[0] = sh->NumSubroutineUniformRemapTable;
2765 case GL_ACTIVE_SUBROUTINE_UNIFORMS:
2766 values[0] = sh->NumSubroutineUniforms;
2768 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH:
2772 GLenum resource_type;
2773 struct gl_program_resource *res;
2775 resource_type = _mesa_shader_stage_to_subroutine(stage);
2776 for (i = 0; i < sh->NumSubroutineFunctions; i++) {
2777 res = _mesa_program_resource_find_index(shProg, resource_type, i);
2779 const GLint len = strlen(_mesa_program_resource_name(res)) + 1;
2784 values[0] = max_len;
2787 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH:
2791 GLenum resource_type;
2792 struct gl_program_resource *res;
2794 resource_type = _mesa_shader_stage_to_subroutine_uniform(stage);
2795 for (i = 0; i < sh->NumSubroutineUniformRemapTable; i++) {
2796 res = _mesa_program_resource_find_index(shProg, resource_type, i);
2798 const GLint len = strlen(_mesa_program_resource_name(res)) + 1
2799 + ((_mesa_program_resource_array_size(res) != 0) ? 3 : 0);
2805 values[0] = max_len;
2809 _mesa_error(ctx, GL_INVALID_ENUM, "%s", api_name);
2816 find_compat_subroutine(struct gl_shader *sh, const struct glsl_type *type)
2820 for (i = 0; i < sh->NumSubroutineFunctions; i++) {
2821 struct gl_subroutine_function *fn = &sh->SubroutineFunctions[i];
2822 for (j = 0; j < fn->num_compat_types; j++) {
2823 if (fn->types[j] == type)
2831 _mesa_shader_init_subroutine_defaults(struct gl_shader *sh)
2835 for (i = 0; i < sh->NumSubroutineUniformRemapTable; i++) {
2836 struct gl_uniform_storage *uni = sh->SubroutineUniformRemapTable[i];
2842 uni_count = uni->array_elements ? uni->array_elements : 1;
2843 val = find_compat_subroutine(sh, uni->type);
2845 for (j = 0; j < uni_count; j++)
2846 memcpy(&uni->storage[j], &val, sizeof(int));
2848 _mesa_propagate_uniforms_to_driver_storage(uni, 0, uni_count);
2853 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program *shProg)
2860 for (i = 0; i < MESA_SHADER_STAGES; i++) {
2861 if (!shProg->_LinkedShaders[i])
2864 _mesa_shader_init_subroutine_defaults(shProg->_LinkedShaders[i]);