src/mesa/state_tracker/st_cb_texturebarrier.c

   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  */
  48 static void
  49 st_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  */
  60 static void
  61 st_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  */
  72 static void
  73 st_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
 134 void 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 }