2 * Copyright © 2011 Marek Olšák <maraeo@gmail.com>
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
21 * DEALINGS IN THE SOFTWARE.
26 * Implementation of various pipeline barrier entry points.
28 * \author Marek Olšák <maraeo@gmail.com>
36 _mesa_texture_barrier(struct gl_context
*ctx
)
42 _mesa_init_barrier_functions(struct dd_function_table
*driver
)
44 driver
->TextureBarrier
= _mesa_texture_barrier
;
48 _mesa_TextureBarrierNV(void)
50 GET_CURRENT_CONTEXT(ctx
);
52 if (!ctx
->Extensions
.NV_texture_barrier
) {
53 _mesa_error(ctx
, GL_INVALID_OPERATION
,
54 "glTextureBarrier(not supported)");
58 ctx
->Driver
.TextureBarrier(ctx
);
62 _mesa_MemoryBarrier(GLbitfield barriers
)
64 GET_CURRENT_CONTEXT(ctx
);
66 if (ctx
->Driver
.MemoryBarrier
)
67 ctx
->Driver
.MemoryBarrier(ctx
, barriers
);
71 _mesa_MemoryBarrierByRegion(GLbitfield barriers
)
73 GET_CURRENT_CONTEXT(ctx
);
75 GLbitfield all_allowed_bits
= GL_ATOMIC_COUNTER_BARRIER_BIT
|
76 GL_FRAMEBUFFER_BARRIER_BIT
|
77 GL_SHADER_IMAGE_ACCESS_BARRIER_BIT
|
78 GL_SHADER_STORAGE_BARRIER_BIT
|
79 GL_TEXTURE_FETCH_BARRIER_BIT
|
80 GL_UNIFORM_BARRIER_BIT
;
82 if (ctx
->Driver
.MemoryBarrier
) {
83 /* From section 7.11.2 of the OpenGL ES 3.1 specification:
85 * "When barriers is ALL_BARRIER_BITS, shader memory accesses will be
86 * synchronized relative to all these barrier bits, but not to other
87 * barrier bits specific to MemoryBarrier."
89 * That is, if barriers is the special value GL_ALL_BARRIER_BITS, then all
90 * barriers allowed by glMemoryBarrierByRegion should be activated."
92 if (barriers
== GL_ALL_BARRIER_BITS
) {
93 ctx
->Driver
.MemoryBarrier(ctx
, all_allowed_bits
);
97 /* From section 7.11.2 of the OpenGL ES 3.1 specification:
99 * "An INVALID_VALUE error is generated if barriers is not the special
100 * value ALL_BARRIER_BITS, and has any bits set other than those
103 if ((barriers
& ~all_allowed_bits
) != 0) {
104 _mesa_error(ctx
, GL_INVALID_VALUE
,
105 "glMemoryBarrierByRegion(unsupported barrier bit");
108 ctx
->Driver
.MemoryBarrier(ctx
, barriers
);
113 _mesa_BlendBarrier(void)
115 GET_CURRENT_CONTEXT(ctx
);
117 if (!ctx
->Extensions
.MESA_shader_framebuffer_fetch_non_coherent
) {
118 _mesa_error(ctx
, GL_INVALID_OPERATION
,
119 "glBlendBarrier(not supported)");
123 ctx
->Driver
.BlendBarrier(ctx
);