src/gallium/auxiliary/util/u_draw.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef U_DRAW_H
  29 #define U_DRAW_H
  30
  31
  32 #include "pipe/p_compiler.h"
  33 #include "pipe/p_context.h"
  34 #include "pipe/p_state.h"
  35
  36
  37 static INLINE void
  38 util_draw_init_info(struct pipe_draw_info *info)
  39 {
  40    memset(info, 0, sizeof(*info));
  41    info->instance_count = 1;
  42    info->max_index = 0xffffffff;
  43 }
  44
  45
  46 static INLINE void
  47 util_draw_arrays(struct pipe_context *pipe, uint mode, uint start, uint count)
  48 {
  49    struct pipe_draw_info info;
  50
  51    util_draw_init_info(&info);
  52    info.mode = mode;
  53    info.start = start;
  54    info.count = count;
  55    info.min_index = start;
  56    info.max_index = start + count - 1;
  57
  58    pipe->draw_vbo(pipe, &info);
  59 }
  60
  61 static INLINE void
  62 util_draw_elements(struct pipe_context *pipe, int index_bias,
  63                    uint mode, uint start, uint count)
  64 {
  65    struct pipe_draw_info info;
  66
  67    util_draw_init_info(&info);
  68    info.indexed = TRUE;
  69    info.mode = mode;
  70    info.start = start;
  71    info.count = count;
  72    info.index_bias = index_bias;
  73
  74    pipe->draw_vbo(pipe, &info);
  75 }
  76
  77 static INLINE void
  78 util_draw_arrays_instanced(struct pipe_context *pipe,
  79                            uint mode, uint start, uint count,
  80                            uint start_instance,
  81                            uint instance_count)
  82 {
  83    struct pipe_draw_info info;
  84
  85    util_draw_init_info(&info);
  86    info.mode = mode;
  87    info.start = start;
  88    info.count = count;
  89    info.start_instance = start_instance;
  90    info.instance_count = instance_count;
  91    info.min_index = start;
  92    info.max_index = start + count - 1;
  93
  94    pipe->draw_vbo(pipe, &info);
  95 }
  96
  97 static INLINE void
  98 util_draw_elements_instanced(struct pipe_context *pipe,
  99                              int index_bias,
 100                              uint mode, uint start, uint count,
 101                              uint start_instance,
 102                              uint instance_count)
 103 {
 104    struct pipe_draw_info info;
 105
 106    util_draw_init_info(&info);
 107    info.indexed = TRUE;
 108    info.mode = mode;
 109    info.start = start;
 110    info.count = count;
 111    info.index_bias = index_bias;
 112    info.start_instance = start_instance;
 113    info.instance_count = instance_count;
 114
 115    pipe->draw_vbo(pipe, &info);
 116 }
 117
 118 static INLINE void
 119 util_draw_range_elements(struct pipe_context *pipe,
 120                          int index_bias,
 121                          uint min_index,
 122                          uint max_index,
 123                          uint mode, uint start, uint count)
 124 {
 125    struct pipe_draw_info info;
 126
 127    util_draw_init_info(&info);
 128    info.indexed = TRUE;
 129    info.mode = mode;
 130    info.start = start;
 131    info.count = count;
 132    info.index_bias = index_bias;
 133    info.min_index = min_index;
 134    info.max_index = max_index;
 135
 136    pipe->draw_vbo(pipe, &info);
 137 }
 138
 139 #endif