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Member "mesa-20.1.8/src/compiler/nir/nir_xfb_info.h" (16 Sep 2020, 2488 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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    1 /*
    2  * Copyright © 2018 Intel Corporation
    3  *
    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:
   10  *
   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
   13  * Software.
   14  *
   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 DEALINGS
   21  * IN THE SOFTWARE.
   22  */
   23 
   24 #ifndef NIR_XFB_INFO_H
   25 #define NIR_XFB_INFO_H
   26 
   27 #include "nir.h"
   28 
   29 #define NIR_MAX_XFB_BUFFERS 4
   30 #define NIR_MAX_XFB_STREAMS 4
   31 
   32 typedef struct {
   33    uint16_t stride;
   34    uint16_t varying_count;
   35 } nir_xfb_buffer_info;
   36 
   37 typedef struct {
   38    uint8_t buffer;
   39    uint16_t offset;
   40    uint8_t location;
   41    uint8_t component_mask;
   42    uint8_t component_offset;
   43 } nir_xfb_output_info;
   44 
   45 typedef struct {
   46    const struct glsl_type *type;
   47    uint8_t buffer;
   48    uint16_t offset;
   49 } nir_xfb_varying_info;
   50 
   51 typedef struct nir_xfb_info {
   52    uint8_t buffers_written;
   53    uint8_t streams_written;
   54 
   55    nir_xfb_buffer_info buffers[NIR_MAX_XFB_BUFFERS];
   56    uint8_t buffer_to_stream[NIR_MAX_XFB_STREAMS];
   57 
   58    uint16_t output_count;
   59    nir_xfb_output_info outputs[0];
   60 } nir_xfb_info;
   61 
   62 typedef struct nir_xfb_varyings_info {
   63    uint16_t varying_count;
   64    nir_xfb_varying_info varyings[0];
   65 } nir_xfb_varyings_info;
   66 
   67 static inline size_t
   68 nir_xfb_info_size(uint16_t output_count)
   69 {
   70    return sizeof(nir_xfb_info) + sizeof(nir_xfb_output_info) * output_count;
   71 }
   72 
   73 nir_xfb_info *
   74 nir_gather_xfb_info(const nir_shader *shader, void *mem_ctx);
   75 
   76 nir_xfb_info *
   77 nir_gather_xfb_info_with_varyings(const nir_shader *shader,
   78                                   void *mem_ctx,
   79                                   nir_xfb_varyings_info **varyings_info);
   80 #endif /* NIR_XFB_INFO_H */