810c6fd1081189d84e38c07568ac687ff1e833ee
2 * Mesa 3-D graphics library
4 * Copyright © 2013 Gregory Hainaut <gregory.hainaut@gmail.com>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
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10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * 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 OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
28 * \author Hainaut Gregory <gregory.hainaut@gmail.com>
30 * Implementation of pipeline object related API functions. Based on
31 * GL_ARB_separate_shader_objects extension.
34 #include "main/glheader.h"
35 #include "main/context.h"
36 #include "main/dispatch.h"
37 #include "main/enums.h"
38 #include "main/hash.h"
39 #include "main/mtypes.h"
40 #include "main/pipelineobj.h"
41 #include "main/shaderapi.h"
42 #include "main/shaderobj.h"
43 #include "main/transformfeedback.h"
44 #include "main/uniforms.h"
45 #include "program/program.h"
46 #include "program/prog_parameter.h"
49 #include "../glsl/glsl_parser_extras.h"
50 #include "../glsl/ir_uniform.h"
53 * Delete a pipeline object.
56 _mesa_delete_pipeline_object(struct gl_context
*ctx
,
57 struct gl_pipeline_object
*obj
)
61 _mesa_reference_shader_program(ctx
, &obj
->_CurrentFragmentProgram
, NULL
);
63 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
64 _mesa_reference_shader_program(ctx
, &obj
->CurrentProgram
[i
], NULL
);
66 _mesa_reference_shader_program(ctx
, &obj
->ActiveProgram
, NULL
);
67 _glthread_DESTROY_MUTEX(obj
->Mutex
);
72 * Allocate and initialize a new pipeline object.
74 static struct gl_pipeline_object
*
75 _mesa_new_pipeline_object(struct gl_context
*ctx
, GLuint name
)
77 struct gl_pipeline_object
*obj
= rzalloc(NULL
, struct gl_pipeline_object
);
80 _glthread_INIT_MUTEX(obj
->Mutex
);
82 obj
->Flags
= _mesa_get_shader_flags();
89 * Initialize pipeline object state for given context.
92 _mesa_init_pipeline(struct gl_context
*ctx
)
94 ctx
->Pipeline
.Objects
= _mesa_NewHashTable();
96 ctx
->Pipeline
.Current
= NULL
;
101 * Callback for deleting a pipeline object. Called by _mesa_HashDeleteAll().
104 delete_pipelineobj_cb(GLuint id
, void *data
, void *userData
)
106 struct gl_pipeline_object
*obj
= (struct gl_pipeline_object
*) data
;
107 struct gl_context
*ctx
= (struct gl_context
*) userData
;
108 _mesa_delete_pipeline_object(ctx
, obj
);
113 * Free pipeline state for given context.
116 _mesa_free_pipeline_data(struct gl_context
*ctx
)
118 _mesa_HashDeleteAll(ctx
->Pipeline
.Objects
, delete_pipelineobj_cb
, ctx
);
119 _mesa_DeleteHashTable(ctx
->Pipeline
.Objects
);
123 * Look up the pipeline object for the given ID.
126 * Either a pointer to the pipeline object with the specified ID or \c NULL for
127 * a non-existent ID. The spec defines ID 0 as being technically
130 static inline struct gl_pipeline_object
*
131 lookup_pipeline_object(struct gl_context
*ctx
, GLuint id
)
136 return (struct gl_pipeline_object
*)
137 _mesa_HashLookup(ctx
->Pipeline
.Objects
, id
);
141 * Add the given pipeline object to the pipeline object pool.
144 save_pipeline_object(struct gl_context
*ctx
, struct gl_pipeline_object
*obj
)
147 _mesa_HashInsert(ctx
->Pipeline
.Objects
, obj
->Name
, obj
);
152 * Remove the given pipeline object from the pipeline object pool.
153 * Do not deallocate the pipeline object though.
156 remove_pipeline_object(struct gl_context
*ctx
, struct gl_pipeline_object
*obj
)
159 _mesa_HashRemove(ctx
->Pipeline
.Objects
, obj
->Name
);
164 * Set ptr to obj w/ reference counting.
165 * Note: this should only be called from the _mesa_reference_pipeline_object()
169 _mesa_reference_pipeline_object_(struct gl_context
*ctx
,
170 struct gl_pipeline_object
**ptr
,
171 struct gl_pipeline_object
*obj
)
176 /* Unreference the old pipeline object */
177 GLboolean deleteFlag
= GL_FALSE
;
178 struct gl_pipeline_object
*oldObj
= *ptr
;
180 _glthread_LOCK_MUTEX(oldObj
->Mutex
);
181 ASSERT(oldObj
->RefCount
> 0);
183 deleteFlag
= (oldObj
->RefCount
== 0);
184 _glthread_UNLOCK_MUTEX(oldObj
->Mutex
);
187 _mesa_delete_pipeline_object(ctx
, oldObj
);
195 /* reference new pipeline object */
196 _glthread_LOCK_MUTEX(obj
->Mutex
);
197 if (obj
->RefCount
== 0) {
198 /* this pipeline's being deleted (look just above) */
199 /* Not sure this can ever really happen. Warn if it does. */
200 _mesa_problem(NULL
, "referencing deleted pipeline object");
207 _glthread_UNLOCK_MUTEX(obj
->Mutex
);
212 * Bound program to severals stages of the pipeline
215 _mesa_UseProgramStages(GLuint pipeline
, GLbitfield stages
, GLuint program
)
220 * Use the named shader program for subsequent glUniform calls (if pipeline
224 _mesa_ActiveShaderProgram(GLuint pipeline
, GLuint program
)
229 * Make program of the pipeline current
232 _mesa_BindProgramPipeline(GLuint pipeline
)
237 * Delete a set of pipeline objects.
239 * \param n Number of pipeline objects to delete.
240 * \param ids pipeline of \c n pipeline object IDs.
243 _mesa_DeleteProgramPipelines(GLsizei n
, const GLuint
*pipelines
)
245 GET_CURRENT_CONTEXT(ctx
);
249 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteProgramPipelines(n<0)");
253 for (i
= 0; i
< n
; i
++) {
254 struct gl_pipeline_object
*obj
=
255 lookup_pipeline_object(ctx
, pipelines
[i
]);
258 ASSERT(obj
->Name
== pipelines
[i
]);
260 /* If the pipeline object is currently bound, the spec says "If an
261 * object that is currently bound is deleted, the binding for that
262 * object reverts to zero and no program pipeline object becomes
265 if (obj
== ctx
->Pipeline
.Current
) {
266 _mesa_BindProgramPipeline(0);
269 /* The ID is immediately freed for re-use */
270 remove_pipeline_object(ctx
, obj
);
272 /* Unreference the pipeline object.
273 * If refcount hits zero, the object will be deleted.
275 _mesa_reference_pipeline_object(ctx
, &obj
, NULL
);
281 * Generate a set of unique pipeline object IDs and store them in \c pipelines.
282 * \param n Number of IDs to generate.
283 * \param pipelines pipeline of \c n locations to store the IDs.
286 _mesa_GenProgramPipelines(GLsizei n
, GLuint
*pipelines
)
291 * Determine if ID is the name of an pipeline object.
293 * \param id ID of the potential pipeline object.
294 * \return \c GL_TRUE if \c id is the name of a pipeline object,
295 * \c GL_FALSE otherwise.
298 _mesa_IsProgramPipeline(GLuint pipeline
)
304 * glGetProgramPipelineiv() - get pipeline shader state.
307 _mesa_GetProgramPipelineiv(GLuint pipeline
, GLenum pname
, GLint
*params
)
312 * Check compatibility of pipeline's program
315 _mesa_ValidateProgramPipeline(GLuint pipeline
)
320 _mesa_GetProgramPipelineInfoLog(GLuint pipeline
, GLsizei bufSize
,
321 GLsizei
*length
, GLchar
*infoLog
)