2 * Copyright © 2012 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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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
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20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
26 * Declarations of functions related to marshalling GL calls from a client
27 * thread to a server thread.
33 #include "main/glthread.h"
34 #include "main/context.h"
36 struct marshal_cmd_base
39 * Type of command. See enum marshal_dispatch_cmd_id.
44 * Size of command, in multiples of 4 bytes, including cmd_base.
52 _mesa_glthread_allocate_command(struct gl_context
*ctx
,
56 struct glthread_state
*glthread
= ctx
->GLThread
;
57 struct marshal_cmd_base
*cmd_base
;
59 if (unlikely(glthread
->batch
->used
+ size
> MARSHAL_MAX_CMD_SIZE
))
60 _mesa_glthread_flush_batch(ctx
);
62 cmd_base
= (struct marshal_cmd_base
*)
63 &glthread
->batch
->buffer
[glthread
->batch
->used
];
64 glthread
->batch
->used
+= size
;
65 cmd_base
->cmd_id
= cmd_id
;
66 cmd_base
->cmd_size
= size
;
71 * Instead of conditionally handling marshaling previously-bound user vertex
72 * array data in draw calls (deprecated and removed in GL core), we just
73 * disable threading at the point where the user sets a user vertex array.
76 _mesa_glthread_is_non_vbo_vertex_attrib_pointer(const struct gl_context
*ctx
)
78 struct glthread_state
*glthread
= ctx
->GLThread
;
80 return ctx
->API
!= API_OPENGL_CORE
&& !glthread
->vertex_array_is_vbo
;
84 * Instead of conditionally handling marshaling immediate index data in draw
85 * calls (deprecated and removed in GL core), we just disable threading.
88 _mesa_glthread_is_non_vbo_draw_elements(const struct gl_context
*ctx
)
90 struct glthread_state
*glthread
= ctx
->GLThread
;
92 return ctx
->API
!= API_OPENGL_CORE
&& !glthread
->element_array_is_vbo
;
97 /* FIXME: dummy functions for non PTHREAD platforms */
99 _mesa_glthread_allocate_command(struct gl_context
*ctx
,
107 _mesa_glthread_is_non_vbo_vertex_attrib_pointer(const struct gl_context
*ctx
)
113 _mesa_glthread_is_non_vbo_draw_elements(const struct gl_context
*ctx
)
120 #define DEBUG_MARSHAL_PRINT_CALLS 0
123 debug_print_sync(const char *func
)
125 #if DEBUG_MARSHAL_PRINT_CALLS
126 printf("sync: %s\n", func
);
131 debug_print_marshal(const char *func
)
133 #if DEBUG_MARSHAL_PRINT_CALLS
134 printf("marshal: %s\n", func
);
139 debug_print_unmarshal(const char *func
)
141 #if DEBUG_MARSHAL_PRINT_CALLS
142 printf("unmarshal: %s\n", func
);
146 struct _glapi_table
*
147 _mesa_create_marshal_table(const struct gl_context
*ctx
);
150 _mesa_unmarshal_dispatch_cmd(struct gl_context
*ctx
, const void *cmd
);
153 _mesa_post_marshal_hook(struct gl_context
*ctx
)
155 /* This can be enabled for debugging whether a failure is a synchronization
156 * problem between the main thread and the worker thread, or a failure in
157 * how we actually marshal.
160 _mesa_glthread_finish(ctx
);
165 * Checks whether we're on a compat context for code-generated
166 * glBindVertexArray().
168 * In order to decide whether a draw call uses only VBOs for vertex and index
169 * buffers, we track the current vertex and index buffer bindings by
170 * glBindBuffer(). However, the index buffer binding is stored in the vertex
171 * array as opposed to the context. If we were to accurately track whether
172 * the index buffer was a user pointer ot not, we'd have to track it per
173 * vertex array, which would mean synchronizing with the client thread and
174 * looking into the hash table to find the actual vertex array object. That's
175 * more tracking than we'd like to do in the main thread, if possible.
177 * Instead, just punt for now and disable threading on apps using vertex
178 * arrays and compat contexts. Apps using vertex arrays can probably use a
182 _mesa_glthread_is_compat_bind_vertex_array(const struct gl_context
*ctx
)
184 return ctx
->API
!= API_OPENGL_CORE
;
187 struct marshal_cmd_ShaderSource
;
188 struct marshal_cmd_Flush
;
189 struct marshal_cmd_BindBuffer
;
192 _mesa_marshal_ShaderSource(GLuint shader
, GLsizei count
,
193 const GLchar
* const *string
, const GLint
*length
);
196 _mesa_unmarshal_ShaderSource(struct gl_context
*ctx
,
197 const struct marshal_cmd_ShaderSource
*cmd
);
200 _mesa_marshal_Flush(void);
203 _mesa_unmarshal_Flush(struct gl_context
*ctx
,
204 const struct marshal_cmd_Flush
*cmd
);
207 _mesa_marshal_BindBuffer(GLenum target
, GLuint buffer
);
210 _mesa_unmarshal_BindBuffer(struct gl_context
*ctx
,
211 const struct marshal_cmd_BindBuffer
*cmd
);
213 #endif /* MARSHAL_H */