Home | History | Annotate | Download | only in state_tracker 
      1 /**************************************************************************
      2  *
      3  * Copyright 2011 Marek Olk <maraeo (at) 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 Olk
     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.BlendBarrier()
     59  */
     60 static void
     61 st_BlendBarrier(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    /* GL_TEXTURE_UPDATE_BARRIER_BIT:
     99     * Texture updates translate to:
    100     *  (1) texture transfers to/from the CPU,
    101     *  (2) texture as blit destination, or
    102     *  (3) texture as framebuffer.
    103     * In all cases, we assume the driver does the required flushing
    104     * automatically.
    105     */
    106    /* GL_BUFFER_UPDATE_BARRIER_BIT:
    107     * Buffer updates translate to
    108     *  (1) buffer transfers to/from the CPU,
    109     *  (2) resource copies and clears.
    110     * In all cases, we assume the driver does the required flushing
    111     * automatically.
    112     */
    113    if (barriers & GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT)
    114       flags |= PIPE_BARRIER_MAPPED_BUFFER;
    115    if (barriers & GL_QUERY_BUFFER_BARRIER_BIT)
    116       flags |= PIPE_BARRIER_QUERY_BUFFER;
    117    if (barriers & GL_FRAMEBUFFER_BARRIER_BIT)
    118       flags |= PIPE_BARRIER_FRAMEBUFFER;
    119    if (barriers & GL_TRANSFORM_FEEDBACK_BARRIER_BIT)
    120       flags |= PIPE_BARRIER_STREAMOUT_BUFFER;
    121    if (barriers & GL_ATOMIC_COUNTER_BARRIER_BIT)
    122       flags |= PIPE_BARRIER_SHADER_BUFFER;
    123    if (barriers & GL_SHADER_STORAGE_BARRIER_BIT)
    124       flags |= PIPE_BARRIER_SHADER_BUFFER;
    125 
    126    if (flags && pipe->memory_barrier)
    127       pipe->memory_barrier(pipe, flags);
    128 }
    129 
    130 void st_init_texture_barrier_functions(struct dd_function_table *functions)
    131 {
    132    functions->TextureBarrier = st_TextureBarrier;
    133    functions->BlendBarrier = st_BlendBarrier;
    134    functions->MemoryBarrier = st_MemoryBarrier;
    135 }
    136