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,
  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 #ifndef U_DRAW_H
  29 #define U_DRAW_H
  30
  31
  32 #include "pipe/p_compiler.h"
  33 #include "pipe/p_context.h"
  34
  35
  36 static INLINE void
  37 util_draw_init_info(struct pipe_draw_info *info)
  38 {
  39    memset(info, 0, sizeof(*info));
  40    info->instance_count = 1;
  41    info->max_index = 0xffffffff;
  42 }
  43
  44
  45 static INLINE void
  46 util_draw_arrays(struct pipe_context *pipe, uint mode, uint start, uint count)
  47 {
  48    struct pipe_draw_info info;
  49
  50    util_draw_init_info(&info);
  51    info.mode = mode;
  52    info.start = start;
  53    info.count = count;
  54    info.min_index = start;
  55    info.max_index = start + count - 1;
  56
  57    pipe->draw_vbo(pipe, &info);
  58 }
  59
  60 static INLINE void
  61 util_draw_elements(struct pipe_context *pipe, int index_bias,
  62                    uint mode, uint start, uint count)
  63 {
  64    struct pipe_draw_info info;
  65
  66    util_draw_init_info(&info);
  67    info.indexed = TRUE;
  68    info.mode = mode;
  69    info.start = start;
  70    info.count = count;
  71    info.index_bias = index_bias;
  72
  73    pipe->draw_vbo(pipe, &info);
  74 }
  75
  76 static INLINE void
  77 util_draw_arrays_instanced(struct pipe_context *pipe,
  78                            uint mode, uint start, uint count,
  79                            uint start_instance,
  80                            uint instance_count)
  81 {
  82    struct pipe_draw_info info;
  83
  84    util_draw_init_info(&info);
  85    info.mode = mode;
  86    info.start = start;
  87    info.count = count;
  88    info.start_instance = start_instance;
  89    info.instance_count = instance_count;
  90    info.min_index = start;
  91    info.max_index = start + count - 1;
  92
  93    pipe->draw_vbo(pipe, &info);
  94 }
  95
  96 static INLINE void
  97 util_draw_elements_instanced(struct pipe_context *pipe,
  98                              int index_bias,
  99                              uint mode, uint start, uint count,
 100                              uint start_instance,
 101                              uint instance_count)
 102 {
 103    struct pipe_draw_info info;
 104
 105    util_draw_init_info(&info);
 106    info.indexed = TRUE;
 107    info.mode = mode;
 108    info.start = start;
 109    info.count = count;
 110    info.index_bias = index_bias;
 111    info.start_instance = start_instance;
 112    info.instance_count = instance_count;
 113
 114    pipe->draw_vbo(pipe, &info);
 115 }
 116
 117 static INLINE void
 118 util_draw_range_elements(struct pipe_context *pipe,
 119                          int index_bias,
 120                          uint min_index,
 121                          uint max_index,
 122                          uint mode, uint start, uint count)
 123 {
 124    struct pipe_draw_info info;
 125
 126    util_draw_init_info(&info);
 127    info.indexed = TRUE;
 128    info.mode = mode;
 129    info.start = start;
 130    info.count = count;
 131    info.index_bias = index_bias;
 132    info.min_index = min_index;
 133    info.max_index = max_index;
 134
 135    pipe->draw_vbo(pipe, &info);
 136 }
 137
 138 #endif