2 * Copyright © 2012 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
26 * Custom functions for marshalling GL calls from the main thread to a worker
27 * thread when automatic code generation isn't appropriate.
30 #include "main/enums.h"
31 #include "main/macros.h"
36 _mesa_post_marshal_hook(struct gl_context
*ctx
)
38 /* This can be enabled for debugging whether a failure is a synchronization
39 * problem between the main thread and the worker thread, or a failure in
40 * how we actually marshal.
43 _mesa_glthread_finish(ctx
);
47 struct marshal_cmd_ShaderSource
49 struct marshal_cmd_base cmd_base
;
52 /* Followed by GLint length[count], then the contents of all strings,
59 _mesa_unmarshal_ShaderSource(struct gl_context
*ctx
,
60 const struct marshal_cmd_ShaderSource
*cmd
)
62 const GLint
*cmd_length
= (const GLint
*) (cmd
+ 1);
63 const GLchar
*cmd_strings
= (const GLchar
*) (cmd_length
+ cmd
->count
);
64 /* TODO: how to deal with malloc failure? */
65 const GLchar
* *string
= malloc(cmd
->count
* sizeof(const GLchar
*));
68 for (i
= 0; i
< cmd
->count
; ++i
) {
69 string
[i
] = cmd_strings
;
70 cmd_strings
+= cmd_length
[i
];
72 CALL_ShaderSource(ctx
->CurrentServerDispatch
,
73 (cmd
->shader
, cmd
->count
, string
, cmd_length
));
79 measure_ShaderSource_strings(GLsizei count
, const GLchar
* const *string
,
80 const GLint
*length_in
, GLint
*length_out
)
83 size_t total_string_length
= 0;
85 for (i
= 0; i
< count
; ++i
) {
86 if (length_in
== NULL
|| length_in
[i
] < 0) {
88 length_out
[i
] = strlen(string
[i
]);
90 length_out
[i
] = length_in
[i
];
92 total_string_length
+= length_out
[i
];
94 return total_string_length
;
99 _mesa_marshal_ShaderSource(GLuint shader
, GLsizei count
,
100 const GLchar
* const *string
, const GLint
*length
)
102 /* TODO: how to report an error if count < 0? */
104 GET_CURRENT_CONTEXT(ctx
);
105 /* TODO: how to deal with malloc failure? */
106 const size_t fixed_cmd_size
= sizeof(struct marshal_cmd_ShaderSource
);
107 STATIC_ASSERT(sizeof(struct marshal_cmd_ShaderSource
) % sizeof(GLint
) == 0);
108 size_t length_size
= count
* sizeof(GLint
);
109 GLint
*length_tmp
= malloc(length_size
);
110 size_t total_string_length
=
111 measure_ShaderSource_strings(count
, string
, length
, length_tmp
);
112 size_t total_cmd_size
= fixed_cmd_size
+ length_size
+ total_string_length
;
114 if (total_cmd_size
<= MARSHAL_MAX_CMD_SIZE
&& count
> 0) {
115 struct marshal_cmd_ShaderSource
*cmd
=
116 _mesa_glthread_allocate_command(ctx
, DISPATCH_CMD_ShaderSource
,
118 GLint
*cmd_length
= (GLint
*) (cmd
+ 1);
119 GLchar
*cmd_strings
= (GLchar
*) (cmd_length
+ count
);
122 cmd
->shader
= shader
;
124 memcpy(cmd_length
, length_tmp
, length_size
);
125 for (i
= 0; i
< count
; ++i
) {
126 memcpy(cmd_strings
, string
[i
], cmd_length
[i
]);
127 cmd_strings
+= cmd_length
[i
];
129 _mesa_post_marshal_hook(ctx
);
131 _mesa_glthread_finish(ctx
);
132 CALL_ShaderSource(ctx
->CurrentServerDispatch
,
133 (shader
, count
, string
, length_tmp
));
139 /** Tracks the current bindings for the vertex array and index array buffers.
141 * This is part of what we need to enable glthread on compat-GL contexts that
142 * happen to use VBOs, without also supporting the full tracking of VBO vs
143 * user vertex array bindings per attribute on each vertex array for
144 * determining what to upload at draw call time.
146 * Note that GL core makes it so that a buffer binding with an invalid handle
147 * in the "buffer" parameter will throw an error, and then a
148 * glVertexAttribPointer() that followsmight not end up pointing at a VBO.
149 * However, in GL core the draw call would throw an error as well, so we don't
150 * really care if our tracking is wrong for this case -- we never need to
151 * marshal user data for draw calls, and the unmarshal will just generate an
152 * error or not as appropriate.
154 * For compatibility GL, we do need to accurately know whether the draw call
155 * on the unmarshal side will dereference a user pointer or load data from a
156 * VBO per vertex. That would make it seem like we need to track whether a
157 * "buffer" is valid, so that we can know when an error will be generated
158 * instead of updating the binding. However, compat GL has the ridiculous
159 * feature that if you pass a bad name, it just gens a buffer object for you,
160 * so we escape without having to know if things are valid or not.
163 _mesa_glthread_BindBuffer(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
165 struct glthread_state
*glthread
= ctx
->GLThread
;
168 case GL_ARRAY_BUFFER
:
169 glthread
->vertex_array_is_vbo
= (buffer
!= 0);
171 case GL_ELEMENT_ARRAY_BUFFER
:
172 /* The current element array buffer binding is actually tracked in the
173 * vertex array object instead of the context, so this would need to
174 * change on vertex array object updates.
176 glthread
->CurrentVAO
->IndexBufferIsUserPointer
= buffer
!= 0;
178 case GL_DRAW_INDIRECT_BUFFER
:
179 glthread
->draw_indirect_buffer_is_vbo
= buffer
!= 0;
185 /* BufferData: marshalled asynchronously */
186 struct marshal_cmd_BufferData
188 struct marshal_cmd_base cmd_base
;
189 GLuint target_or_name
;
192 const GLvoid
*data_external_mem
;
193 bool data_null
; /* If set, no data follows for "data" */
196 /* Next size bytes are GLubyte data[size] */
200 _mesa_unmarshal_BufferData(struct gl_context
*ctx
,
201 const struct marshal_cmd_BufferData
*cmd
)
203 const GLuint target_or_name
= cmd
->target_or_name
;
204 const GLsizei size
= cmd
->size
;
205 const GLenum usage
= cmd
->usage
;
210 else if (!cmd
->named
&& target_or_name
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
)
211 data
= cmd
->data_external_mem
;
213 data
= (const void *) (cmd
+ 1);
216 CALL_NamedBufferDataEXT(ctx
->CurrentServerDispatch
,
217 (target_or_name
, size
, data
, usage
));
218 } else if (cmd
->named
) {
219 CALL_NamedBufferData(ctx
->CurrentServerDispatch
,
220 (target_or_name
, size
, data
, usage
));
222 CALL_BufferData(ctx
->CurrentServerDispatch
,
223 (target_or_name
, size
, data
, usage
));
228 _mesa_unmarshal_NamedBufferData(struct gl_context
*ctx
,
229 const struct marshal_cmd_BufferData
*cmd
)
231 unreachable("never used - all BufferData variants use DISPATCH_CMD_BufferData");
235 _mesa_unmarshal_NamedBufferDataEXT(struct gl_context
*ctx
,
236 const struct marshal_cmd_BufferData
*cmd
)
238 unreachable("never used - all BufferData variants use DISPATCH_CMD_BufferData");
242 _mesa_marshal_BufferData_merged(GLuint target_or_name
, GLsizeiptr size
,
243 const GLvoid
*data
, GLenum usage
, bool named
,
244 bool ext_dsa
, const char *func
)
246 GET_CURRENT_CONTEXT(ctx
);
247 bool external_mem
= !named
&&
248 target_or_name
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
;
249 bool copy_data
= data
&& !external_mem
;
250 int cmd_size
= sizeof(struct marshal_cmd_BufferData
) + (copy_data
? size
: 0);
252 if (unlikely(size
< 0 || size
> INT_MAX
|| cmd_size
< 0 ||
253 cmd_size
> MARSHAL_MAX_CMD_SIZE
||
254 (named
&& target_or_name
== 0))) {
255 _mesa_glthread_finish_before(ctx
, func
);
257 CALL_NamedBufferData(ctx
->CurrentServerDispatch
,
258 (target_or_name
, size
, data
, usage
));
260 CALL_BufferData(ctx
->CurrentServerDispatch
,
261 (target_or_name
, size
, data
, usage
));
266 struct marshal_cmd_BufferData
*cmd
=
267 _mesa_glthread_allocate_command(ctx
, DISPATCH_CMD_BufferData
,
270 cmd
->target_or_name
= target_or_name
;
273 cmd
->data_null
= !data
;
275 cmd
->ext_dsa
= ext_dsa
;
276 cmd
->data_external_mem
= data
;
279 char *variable_data
= (char *) (cmd
+ 1);
280 memcpy(variable_data
, data
, size
);
282 _mesa_post_marshal_hook(ctx
);
286 _mesa_marshal_BufferData(GLenum target
, GLsizeiptr size
, const GLvoid
* data
,
289 _mesa_marshal_BufferData_merged(target
, size
, data
, usage
, false, false,
294 _mesa_marshal_NamedBufferData(GLuint buffer
, GLsizeiptr size
,
295 const GLvoid
* data
, GLenum usage
)
297 _mesa_marshal_BufferData_merged(buffer
, size
, data
, usage
, true, false,
302 _mesa_marshal_NamedBufferDataEXT(GLuint buffer
, GLsizeiptr size
,
303 const GLvoid
*data
, GLenum usage
)
305 _mesa_marshal_BufferData_merged(buffer
, size
, data
, usage
, true, true,
306 "NamedBufferDataEXT");
310 /* BufferSubData: marshalled asynchronously */
311 struct marshal_cmd_BufferSubData
313 struct marshal_cmd_base cmd_base
;
314 GLenum target_or_name
;
319 /* Next size bytes are GLubyte data[size] */
323 _mesa_unmarshal_BufferSubData(struct gl_context
*ctx
,
324 const struct marshal_cmd_BufferSubData
*cmd
)
326 const GLenum target_or_name
= cmd
->target_or_name
;
327 const GLintptr offset
= cmd
->offset
;
328 const GLsizeiptr size
= cmd
->size
;
329 const void *data
= (const void *) (cmd
+ 1);
332 CALL_NamedBufferSubDataEXT(ctx
->CurrentServerDispatch
,
333 (target_or_name
, offset
, size
, data
));
334 } else if (cmd
->named
) {
335 CALL_NamedBufferSubData(ctx
->CurrentServerDispatch
,
336 (target_or_name
, offset
, size
, data
));
338 CALL_BufferSubData(ctx
->CurrentServerDispatch
,
339 (target_or_name
, offset
, size
, data
));
344 _mesa_unmarshal_NamedBufferSubData(struct gl_context
*ctx
,
345 const struct marshal_cmd_BufferSubData
*cmd
)
347 unreachable("never used - all BufferSubData variants use DISPATCH_CMD_BufferSubData");
351 _mesa_unmarshal_NamedBufferSubDataEXT(struct gl_context
*ctx
,
352 const struct marshal_cmd_BufferSubData
*cmd
)
354 unreachable("never used - all BufferSubData variants use DISPATCH_CMD_BufferSubData");
358 _mesa_marshal_BufferSubData_merged(GLuint target_or_name
, GLintptr offset
,
359 GLsizeiptr size
, const GLvoid
*data
,
360 bool named
, bool ext_dsa
, const char *func
)
362 GET_CURRENT_CONTEXT(ctx
);
363 size_t cmd_size
= sizeof(struct marshal_cmd_BufferSubData
) + size
;
365 if (unlikely(size
< 0 || size
> INT_MAX
|| cmd_size
< 0 ||
366 cmd_size
> MARSHAL_MAX_CMD_SIZE
|| !data
||
367 (named
&& target_or_name
== 0))) {
368 _mesa_glthread_finish_before(ctx
, func
);
370 CALL_NamedBufferSubData(ctx
->CurrentServerDispatch
,
371 (target_or_name
, offset
, size
, data
));
373 CALL_BufferSubData(ctx
->CurrentServerDispatch
,
374 (target_or_name
, offset
, size
, data
));
379 struct marshal_cmd_BufferSubData
*cmd
=
380 _mesa_glthread_allocate_command(ctx
, DISPATCH_CMD_BufferSubData
,
382 cmd
->target_or_name
= target_or_name
;
383 cmd
->offset
= offset
;
386 cmd
->ext_dsa
= ext_dsa
;
388 char *variable_data
= (char *) (cmd
+ 1);
389 memcpy(variable_data
, data
, size
);
390 _mesa_post_marshal_hook(ctx
);
394 _mesa_marshal_BufferSubData(GLenum target
, GLintptr offset
, GLsizeiptr size
,
397 _mesa_marshal_BufferSubData_merged(target
, offset
, size
, data
, false,
398 false, "BufferSubData");
402 _mesa_marshal_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
403 GLsizeiptr size
, const GLvoid
* data
)
405 _mesa_marshal_BufferSubData_merged(buffer
, offset
, size
, data
, true,
406 false, "NamedBufferSubData");
410 _mesa_marshal_NamedBufferSubDataEXT(GLuint buffer
, GLintptr offset
,
411 GLsizeiptr size
, const GLvoid
* data
)
413 _mesa_marshal_BufferSubData_merged(buffer
, offset
, size
, data
, true,
414 true, "NamedBufferSubDataEXT");