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.
32 #include "marshal_generated.h"
34 struct marshal_cmd_Flush
36 struct marshal_cmd_base cmd_base
;
41 _mesa_unmarshal_Flush(struct gl_context
*ctx
,
42 const struct marshal_cmd_Flush
*cmd
)
44 CALL_Flush(ctx
->CurrentServerDispatch
, ());
49 _mesa_marshal_Flush(void)
51 GET_CURRENT_CONTEXT(ctx
);
52 struct marshal_cmd_Flush
*cmd
=
53 _mesa_glthread_allocate_command(ctx
, DISPATCH_CMD_Flush
,
54 sizeof(struct marshal_cmd_Flush
));
56 _mesa_post_marshal_hook(ctx
);
58 /* Flush() needs to be handled specially. In addition to telling the
59 * background thread to flush, we need to ensure that our own buffer is
60 * submitted to the background thread so that it will complete in a finite
63 _mesa_glthread_flush_batch(ctx
);
67 struct marshal_cmd_ShaderSource
69 struct marshal_cmd_base cmd_base
;
72 /* Followed by GLint length[count], then the contents of all strings,
79 _mesa_unmarshal_ShaderSource(struct gl_context
*ctx
,
80 const struct marshal_cmd_ShaderSource
*cmd
)
82 const GLint
*cmd_length
= (const GLint
*) (cmd
+ 1);
83 const GLchar
*cmd_strings
= (const GLchar
*) (cmd_length
+ cmd
->count
);
84 /* TODO: how to deal with malloc failure? */
85 const GLchar
* *string
= malloc(cmd
->count
* sizeof(const GLchar
*));
88 for (i
= 0; i
< cmd
->count
; ++i
) {
89 string
[i
] = cmd_strings
;
90 cmd_strings
+= cmd_length
[i
];
92 CALL_ShaderSource(ctx
->CurrentServerDispatch
,
93 (cmd
->shader
, cmd
->count
, string
, cmd_length
));
99 measure_ShaderSource_strings(GLsizei count
, const GLchar
* const *string
,
100 const GLint
*length_in
, GLint
*length_out
)
103 size_t total_string_length
= 0;
105 for (i
= 0; i
< count
; ++i
) {
106 if (length_in
== NULL
|| length_in
[i
] < 0) {
108 length_out
[i
] = strlen(string
[i
]);
110 length_out
[i
] = length_in
[i
];
112 total_string_length
+= length_out
[i
];
114 return total_string_length
;
119 _mesa_marshal_ShaderSource(GLuint shader
, GLsizei count
,
120 const GLchar
* const *string
, const GLint
*length
)
122 /* TODO: how to report an error if count < 0? */
124 GET_CURRENT_CONTEXT(ctx
);
125 /* TODO: how to deal with malloc failure? */
126 const size_t fixed_cmd_size
= sizeof(struct marshal_cmd_ShaderSource
);
127 STATIC_ASSERT(sizeof(struct marshal_cmd_ShaderSource
) % sizeof(GLint
) == 0);
128 size_t length_size
= count
* sizeof(GLint
);
129 GLint
*length_tmp
= malloc(length_size
);
130 size_t total_string_length
=
131 measure_ShaderSource_strings(count
, string
, length
, length_tmp
);
132 size_t total_cmd_size
= fixed_cmd_size
+ length_size
+ total_string_length
;
134 if (total_cmd_size
<= MARSHAL_MAX_CMD_SIZE
) {
135 struct marshal_cmd_ShaderSource
*cmd
=
136 _mesa_glthread_allocate_command(ctx
, DISPATCH_CMD_ShaderSource
,
138 GLint
*cmd_length
= (GLint
*) (cmd
+ 1);
139 GLchar
*cmd_strings
= (GLchar
*) (cmd_length
+ count
);
142 cmd
->shader
= shader
;
144 memcpy(cmd_length
, length_tmp
, length_size
);
145 for (i
= 0; i
< count
; ++i
) {
146 memcpy(cmd_strings
, string
[i
], cmd_length
[i
]);
147 cmd_strings
+= cmd_length
[i
];
149 _mesa_post_marshal_hook(ctx
);
151 _mesa_glthread_finish(ctx
);
152 CALL_ShaderSource(ctx
->CurrentServerDispatch
,
153 (shader
, count
, string
, length_tmp
));
159 /* BindBufferBase: marshalled asynchronously */
160 struct marshal_cmd_BindBufferBase
162 struct marshal_cmd_base cmd_base
;
168 _mesa_unmarshal_BindBufferBase(struct gl_context
*ctx
, const struct marshal_cmd_BindBufferBase
*cmd
)
170 const GLenum target
= cmd
->target
;
171 const GLuint index
= cmd
->index
;
172 const GLuint buffer
= cmd
->buffer
;
173 CALL_BindBufferBase(ctx
->CurrentServerDispatch
, (target
, index
, buffer
));
176 /** Tracks the current bindings for the vertex array and index array buffers.
178 * This is part of what we need to enable glthread on compat-GL contexts that
179 * happen to use VBOs, without also supporting the full tracking of VBO vs
180 * user vertex array bindings per attribute on each vertex array for
181 * determining what to upload at draw call time.
183 * Note that GL core makes it so that a buffer binding with an invalid handle
184 * in the "buffer" parameter will throw an error, and then a
185 * glVertexAttribPointer() that followsmight not end up pointing at a VBO.
186 * However, in GL core the draw call would throw an error as well, so we don't
187 * really care if our tracking is wrong for this case -- we never need to
188 * marshal user data for draw calls, and the unmarshal will just generate an
189 * error or not as appropriate.
191 * For compatibility GL, we do need to accurately know whether the draw call
192 * on the unmarshal side will dereference a user pointer or load data from a
193 * VBO per vertex. That would make it seem like we need to track whether a
194 * "buffer" is valid, so that we can know when an error will be generated
195 * instead of updating the binding. However, compat GL has the ridiculous
196 * feature that if you pass a bad name, it just gens a buffer object for you,
197 * so we escape without having to know if things are valid or not.
200 track_vbo_binding(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
202 struct glthread_state
*glthread
= ctx
->GLThread
;
205 case GL_ARRAY_BUFFER
:
206 glthread
->vertex_array_is_vbo
= (buffer
!= 0);
208 case GL_ELEMENT_ARRAY_BUFFER
:
209 /* The current element array buffer binding is actually tracked in the
210 * vertex array object instead of the context, so this would need to
211 * change on vertex array object updates.
213 glthread
->element_array_is_vbo
= (buffer
!= 0);
219 struct marshal_cmd_BindBuffer
221 struct marshal_cmd_base cmd_base
;
227 * This is just like the code-generated glBindBuffer() support, except that we
228 * call track_vbo_binding().
231 _mesa_unmarshal_BindBuffer(struct gl_context
*ctx
,
232 const struct marshal_cmd_BindBuffer
*cmd
)
234 const GLenum target
= cmd
->target
;
235 const GLuint buffer
= cmd
->buffer
;
236 CALL_BindBuffer(ctx
->CurrentServerDispatch
, (target
, buffer
));
239 _mesa_marshal_BindBuffer(GLenum target
, GLuint buffer
)
241 GET_CURRENT_CONTEXT(ctx
);
242 size_t cmd_size
= sizeof(struct marshal_cmd_BindBuffer
);
243 struct marshal_cmd_BindBuffer
*cmd
;
244 debug_print_marshal("BindBuffer");
246 track_vbo_binding(ctx
, target
, buffer
);
248 if (cmd_size
<= MARSHAL_MAX_CMD_SIZE
) {
249 cmd
= _mesa_glthread_allocate_command(ctx
, DISPATCH_CMD_BindBuffer
,
251 cmd
->target
= target
;
252 cmd
->buffer
= buffer
;
253 _mesa_post_marshal_hook(ctx
);
255 _mesa_glthread_finish(ctx
);
256 CALL_BindBuffer(ctx
->CurrentServerDispatch
, (target
, buffer
));