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 * 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.
32 #include "main/glheader.h"
33 #include "main/context.h"
34 #include "main/hash.h"
35 #include "main/shaderobj.h"
36 #include "program/program.h"
37 #include "program/prog_parameter.h"
38 #include "program/prog_uniform.h"
41 /**********************************************************************/
42 /*** Shader object functions ***/
43 /**********************************************************************/
47 * Set ptr to point to sh.
48 * If ptr is pointing to another shader, decrement its refcount (and delete
49 * if refcount hits zero).
50 * Then set ptr to point to sh, incrementing its refcount.
53 _mesa_reference_shader(struct gl_context
*ctx
, struct gl_shader
**ptr
,
62 /* Unreference the old shader */
63 GLboolean deleteFlag
= GL_FALSE
;
64 struct gl_shader
*old
= *ptr
;
66 ASSERT(old
->RefCount
> 0);
68 /*printf("SHADER DECR %p (%d) to %d\n",
69 (void*) old, old->Name, old->RefCount);*/
70 deleteFlag
= (old
->RefCount
== 0);
73 _mesa_HashRemove(ctx
->Shared
->ShaderObjects
, old
->Name
);
74 ctx
->Driver
.DeleteShader(ctx
, old
);
84 /*printf("SHADER INCR %p (%d) to %d\n",
85 (void*) sh, sh->Name, sh->RefCount);*/
91 _mesa_init_shader(struct gl_context
*ctx
, struct gl_shader
*shader
)
97 * Allocate a new gl_shader object, initialize it.
98 * Called via ctx->Driver.NewShader()
101 _mesa_new_shader(struct gl_context
*ctx
, GLuint name
, GLenum type
)
103 struct gl_shader
*shader
;
104 assert(type
== GL_FRAGMENT_SHADER
|| type
== GL_VERTEX_SHADER
||
105 type
== GL_GEOMETRY_SHADER_ARB
);
106 shader
= talloc_zero(NULL
, struct gl_shader
);
110 _mesa_init_shader(ctx
, shader
);
117 * Delete a shader object.
118 * Called via ctx->Driver.DeleteShader().
121 _mesa_delete_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
124 free((void *) sh
->Source
);
125 _mesa_reference_program(ctx
, &sh
->Program
, NULL
);
131 * Lookup a GLSL shader object.
134 _mesa_lookup_shader(struct gl_context
*ctx
, GLuint name
)
137 struct gl_shader
*sh
= (struct gl_shader
*)
138 _mesa_HashLookup(ctx
->Shared
->ShaderObjects
, name
);
139 /* Note that both gl_shader and gl_shader_program objects are kept
140 * in the same hash table. Check the object's type to be sure it's
141 * what we're expecting.
143 if (sh
&& sh
->Type
== GL_SHADER_PROGRAM_MESA
) {
153 * As above, but record an error if shader is not found.
156 _mesa_lookup_shader_err(struct gl_context
*ctx
, GLuint name
, const char *caller
)
159 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", caller
);
163 struct gl_shader
*sh
= (struct gl_shader
*)
164 _mesa_HashLookup(ctx
->Shared
->ShaderObjects
, name
);
166 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", caller
);
169 if (sh
->Type
== GL_SHADER_PROGRAM_MESA
) {
170 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
179 /**********************************************************************/
180 /*** Shader Program object functions ***/
181 /**********************************************************************/
185 * Set ptr to point to shProg.
186 * If ptr is pointing to another object, decrement its refcount (and delete
187 * if refcount hits zero).
188 * Then set ptr to point to shProg, incrementing its refcount.
191 _mesa_reference_shader_program(struct gl_context
*ctx
,
192 struct gl_shader_program
**ptr
,
193 struct gl_shader_program
*shProg
)
196 if (*ptr
== shProg
) {
201 /* Unreference the old shader program */
202 GLboolean deleteFlag
= GL_FALSE
;
203 struct gl_shader_program
*old
= *ptr
;
205 ASSERT(old
->RefCount
> 0);
208 printf("ShaderProgram %p ID=%u RefCount-- to %d\n",
209 (void *) old
, old
->Name
, old
->RefCount
);
211 deleteFlag
= (old
->RefCount
== 0);
214 _mesa_HashRemove(ctx
->Shared
->ShaderObjects
, old
->Name
);
215 ctx
->Driver
.DeleteShaderProgram(ctx
, old
);
225 printf("ShaderProgram %p ID=%u RefCount++ to %d\n",
226 (void *) shProg
, shProg
->Name
, shProg
->RefCount
);
233 _mesa_init_shader_program(struct gl_context
*ctx
, struct gl_shader_program
*prog
)
235 prog
->Type
= GL_SHADER_PROGRAM_MESA
;
237 prog
->Attributes
= _mesa_new_parameter_list();
238 #if FEATURE_ARB_geometry_shader4
239 prog
->Geom
.VerticesOut
= 0;
240 prog
->Geom
.InputType
= GL_TRIANGLES
;
241 prog
->Geom
.OutputType
= GL_TRIANGLE_STRIP
;
246 * Allocate a new gl_shader_program object, initialize it.
247 * Called via ctx->Driver.NewShaderProgram()
249 static struct gl_shader_program
*
250 _mesa_new_shader_program(struct gl_context
*ctx
, GLuint name
)
252 struct gl_shader_program
*shProg
;
253 shProg
= talloc_zero(NULL
, struct gl_shader_program
);
256 _mesa_init_shader_program(ctx
, shProg
);
263 * Clear (free) the shader program state that gets produced by linking.
266 _mesa_clear_shader_program_data(struct gl_context
*ctx
,
267 struct gl_shader_program
*shProg
)
269 _mesa_reference_vertprog(ctx
, &shProg
->VertexProgram
, NULL
);
270 _mesa_reference_fragprog(ctx
, &shProg
->FragmentProgram
, NULL
);
271 _mesa_reference_geomprog(ctx
, &shProg
->GeometryProgram
, NULL
);
273 if (shProg
->Uniforms
) {
274 _mesa_free_uniform_list(shProg
->Uniforms
);
275 shProg
->Uniforms
= NULL
;
278 if (shProg
->Varying
) {
279 _mesa_free_parameter_list(shProg
->Varying
);
280 shProg
->Varying
= NULL
;
286 * Free all the data that hangs off a shader program object, but not the
290 _mesa_free_shader_program_data(struct gl_context
*ctx
,
291 struct gl_shader_program
*shProg
)
296 assert(shProg
->Type
== GL_SHADER_PROGRAM_MESA
);
298 _mesa_clear_shader_program_data(ctx
, shProg
);
300 if (shProg
->Attributes
) {
301 _mesa_free_parameter_list(shProg
->Attributes
);
302 shProg
->Attributes
= NULL
;
306 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
307 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
309 shProg
->NumShaders
= 0;
311 if (shProg
->Shaders
) {
312 free(shProg
->Shaders
);
313 shProg
->Shaders
= NULL
;
316 if (shProg
->InfoLog
) {
317 talloc_free(shProg
->InfoLog
);
318 shProg
->InfoLog
= NULL
;
321 /* Transform feedback varying vars */
322 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
323 free(shProg
->TransformFeedback
.VaryingNames
[i
]);
325 free(shProg
->TransformFeedback
.VaryingNames
);
326 shProg
->TransformFeedback
.VaryingNames
= NULL
;
327 shProg
->TransformFeedback
.NumVarying
= 0;
330 for (sh
= 0; sh
< MESA_SHADER_TYPES
; sh
++) {
331 if (shProg
->_LinkedShaders
[sh
] != NULL
) {
332 ctx
->Driver
.DeleteShader(ctx
, shProg
->_LinkedShaders
[sh
]);
333 shProg
->_LinkedShaders
[sh
] = NULL
;
340 * Free/delete a shader program object.
341 * Called via ctx->Driver.DeleteShaderProgram().
344 _mesa_delete_shader_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
346 _mesa_free_shader_program_data(ctx
, shProg
);
353 * Lookup a GLSL program object.
355 struct gl_shader_program
*
356 _mesa_lookup_shader_program(struct gl_context
*ctx
, GLuint name
)
358 struct gl_shader_program
*shProg
;
360 shProg
= (struct gl_shader_program
*)
361 _mesa_HashLookup(ctx
->Shared
->ShaderObjects
, name
);
362 /* Note that both gl_shader and gl_shader_program objects are kept
363 * in the same hash table. Check the object's type to be sure it's
364 * what we're expecting.
366 if (shProg
&& shProg
->Type
!= GL_SHADER_PROGRAM_MESA
) {
376 * As above, but record an error if program is not found.
378 struct gl_shader_program
*
379 _mesa_lookup_shader_program_err(struct gl_context
*ctx
, GLuint name
,
383 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", caller
);
387 struct gl_shader_program
*shProg
= (struct gl_shader_program
*)
388 _mesa_HashLookup(ctx
->Shared
->ShaderObjects
, name
);
390 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", caller
);
393 if (shProg
->Type
!= GL_SHADER_PROGRAM_MESA
) {
394 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
403 _mesa_init_shader_object_functions(struct dd_function_table
*driver
)
405 driver
->NewShader
= _mesa_new_shader
;
406 driver
->DeleteShader
= _mesa_delete_shader
;
407 driver
->NewShaderProgram
= _mesa_new_shader_program
;
408 driver
->DeleteShaderProgram
= _mesa_delete_shader_program
;
409 driver
->CompileShader
= _mesa_ir_compile_shader
;
410 driver
->LinkShader
= _mesa_ir_link_shader
;