1/**************************************************************************
2 *
3 * Copyright 2011 Marek Olšák <maraeo@gmail.com>
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29/**
30 * glTextureBarrierNV function
31 *
32 * \author Marek Olšák
33 */
34
35
36#include "main/imports.h"
37#include "main/context.h"
38
39#include "pipe/p_context.h"
40#include "pipe/p_defines.h"
41#include "st_context.h"
42#include "st_cb_texturebarrier.h"
43
44
45/**
46 * Called via ctx->Driver.TextureBarrier()
47 */
48static void
49st_TextureBarrier(struct gl_context *ctx)
50{
51   struct pipe_context *pipe = st_context(ctx)->pipe;
52
53   pipe->texture_barrier(pipe, PIPE_TEXTURE_BARRIER_SAMPLER);
54}
55
56
57/**
58 * Called via ctx->Driver.FramebufferFetchBarrier()
59 */
60static void
61st_FramebufferFetchBarrier(struct gl_context *ctx)
62{
63   struct pipe_context *pipe = st_context(ctx)->pipe;
64
65   pipe->texture_barrier(pipe, PIPE_TEXTURE_BARRIER_FRAMEBUFFER);
66}
67
68
69/**
70 * Called via ctx->Driver.MemoryBarrier()
71 */
72static void
73st_MemoryBarrier(struct gl_context *ctx, GLbitfield barriers)
74{
75   struct pipe_context *pipe = st_context(ctx)->pipe;
76   unsigned flags = 0;
77
78   if (barriers & GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT)
79      flags |= PIPE_BARRIER_VERTEX_BUFFER;
80   if (barriers & GL_ELEMENT_ARRAY_BARRIER_BIT)
81      flags |= PIPE_BARRIER_INDEX_BUFFER;
82   if (barriers & GL_UNIFORM_BARRIER_BIT)
83      flags |= PIPE_BARRIER_CONSTANT_BUFFER;
84   if (barriers & GL_TEXTURE_FETCH_BARRIER_BIT)
85      flags |= PIPE_BARRIER_TEXTURE;
86   if (barriers & GL_SHADER_IMAGE_ACCESS_BARRIER_BIT)
87      flags |= PIPE_BARRIER_IMAGE;
88   if (barriers & GL_COMMAND_BARRIER_BIT)
89      flags |= PIPE_BARRIER_INDIRECT_BUFFER;
90   if (barriers & GL_PIXEL_BUFFER_BARRIER_BIT) {
91      /* The PBO may be
92       *  (1) bound as a texture for PBO uploads, or
93       *  (2) accessed by the CPU via transfer ops.
94       * For case (2), we assume automatic flushing by the driver.
95       */
96      flags |= PIPE_BARRIER_TEXTURE;
97   }
98   if (barriers & GL_TEXTURE_UPDATE_BARRIER_BIT) {
99      /* GL_TEXTURE_UPDATE_BARRIER_BIT:
100       * Texture updates translate to:
101       *  (1) texture transfers to/from the CPU,
102       *  (2) texture as blit destination, or
103       *  (3) texture as framebuffer.
104       * Some drivers may handle these automatically, and can ignore the bit.
105       */
106      flags |= PIPE_BARRIER_UPDATE_TEXTURE;
107   }
108   if (barriers & GL_BUFFER_UPDATE_BARRIER_BIT) {
109      /* GL_BUFFER_UPDATE_BARRIER_BIT:
110       * Buffer updates translate to
111       *  (1) buffer transfers to/from the CPU,
112       *  (2) resource copies and clears.
113       * Some drivers may handle these automatically, and can ignore the bit.
114       */
115      flags |= PIPE_BARRIER_UPDATE_BUFFER;
116   }
117   if (barriers & GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT)
118      flags |= PIPE_BARRIER_MAPPED_BUFFER;
119   if (barriers & GL_QUERY_BUFFER_BARRIER_BIT)
120      flags |= PIPE_BARRIER_QUERY_BUFFER;
121   if (barriers & GL_FRAMEBUFFER_BARRIER_BIT)
122      flags |= PIPE_BARRIER_FRAMEBUFFER;
123   if (barriers & GL_TRANSFORM_FEEDBACK_BARRIER_BIT)
124      flags |= PIPE_BARRIER_STREAMOUT_BUFFER;
125   if (barriers & GL_ATOMIC_COUNTER_BARRIER_BIT)
126      flags |= PIPE_BARRIER_SHADER_BUFFER;
127   if (barriers & GL_SHADER_STORAGE_BARRIER_BIT)
128      flags |= PIPE_BARRIER_SHADER_BUFFER;
129
130   if (flags && pipe->memory_barrier)
131      pipe->memory_barrier(pipe, flags);
132}
133
134void st_init_texture_barrier_functions(struct dd_function_table *functions)
135{
136   functions->TextureBarrier = st_TextureBarrier;
137   functions->FramebufferFetchBarrier = st_FramebufferFetchBarrier;
138   functions->MemoryBarrier = st_MemoryBarrier;
139}
140