src/mesa/pipe/i915simple/i915_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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 #include "main/imports.h"       /* CALLOC */
  29 #include "i915_context.h"
  30 #include "i915_winsys.h"
  31 #include "i915_state.h"
  32
  33 #include "pipe/draw/draw_context.h"
  34 #include "pipe/p_defines.h"
  35
  36
  37
  38 /**
  39  * Return list of supported surface/texture formats.
  40  * If we find texture and drawable support differs, add a selector
  41  * parameter or another function.
  42  */
  43 static const GLuint *
  44 i915_supported_formats(struct pipe_context *pipe,
  45 //                         GLuint type,
  46                            GLuint *numFormats)
  47 {
  48 #if 0
  49    static const GLuint tex_supported[] = {
  50       PIPE_FORMAT_U_R8_G8_B8_A8,
  51       PIPE_FORMAT_U_A8_R8_G8_B8,
  52       PIPE_FORMAT_U_R5_G6_B5,
  53       PIPE_FORMAT_U_L8,
  54       PIPE_FORMAT_U_A8,
  55       PIPE_FORMAT_U_I8,
  56       PIPE_FORMAT_U_L8_A8,
  57       PIPE_FORMAT_YCBCR,
  58       PIPE_FORMAT_YCBCR_REV,
  59       PIPE_FORMAT_S8_Z24,
  60    };
  61
  62
  63    /* Actually a lot more than this - add later:
  64     */
  65    static const GLuint render_supported[] = {
  66       PIPE_FORMAT_U_A8_R8_G8_B8,
  67       PIPE_FORMAT_U_R5_G6_B5,
  68    };
  69
  70    /*
  71     */
  72    static const GLuint z_stencil_supported[] = {
  73       PIPE_FORMAT_U_Z16,
  74       PIPE_FORMAT_U_Z32,
  75       PIPE_FORMAT_S8_Z24,
  76    };
  77
  78    switch (type) {
  79    case PIPE_RENDER_FORMAT:
  80       *numFormats = Elements(render_supported);
  81       return render_supported;
  82
  83    case PIPE_TEX_FORMAT:
  84       *numFormats = Elements(tex_supported);
  85       return render_supported;
  86
  87    case PIPE_Z_STENCIL_FORMAT:
  88       *numFormats = Elements(render_supported);
  89       return render_supported;
  90
  91    default:
  92       *numFormats = 0;
  93       return NULL;
  94    }
  95 #else
  96    static const GLuint render_supported[] = {
  97       PIPE_FORMAT_U_A8_R8_G8_B8,
  98       PIPE_FORMAT_U_R5_G6_B5,
  99       PIPE_FORMAT_S8_Z24,
 100    };
 101    *numFormats = 2;
 102    return render_supported;
 103 #endif
 104 }
 105
 106
 107
 108 static void i915_destroy( struct pipe_context *pipe )
 109 {
 110    struct i915_context *i915 = i915_context( pipe );
 111
 112    draw_destroy( i915->draw );
 113
 114    free( i915 );
 115 }
 116
 117 static void i915_draw_vb( struct pipe_context *pipe,
 118                              struct vertex_buffer *VB )
 119 {
 120    struct i915_context *i915 = i915_context( pipe );
 121
 122 //   if (i915->dirty)
 123 //      i915_update_derived( i915 );
 124
 125    draw_vb( i915->draw, VB );
 126 }
 127
 128
 129 static void
 130 i915_draw_vertices(struct pipe_context *pipe,
 131                        GLuint mode,
 132                        GLuint numVertex, const GLfloat *verts,
 133                        GLuint numAttribs, const GLuint attribs[])
 134 {
 135    struct i915_context *i915 = i915_context( pipe );
 136
 137    if (i915->dirty)
 138       i915_update_derived( i915 );
 139
 140    draw_vertices(i915->draw, mode, numVertex, verts, numAttribs, attribs);
 141 }
 142
 143
 144
 145
 146 struct pipe_context *i915_create( struct i915_winsys *winsys )
 147 {
 148    struct i915_context *i915 = CALLOC_STRUCT(i915_context);
 149
 150    i915->pipe.destroy = i915_destroy;
 151
 152    i915->pipe.supported_formats = i915_supported_formats;
 153
 154    i915->pipe.draw_vb = i915_draw_vb;
 155    i915->pipe.draw_vertices = i915_draw_vertices;
 156    i915->pipe.clear = i915_clear;
 157    i915->pipe.reset_occlusion_counter = NULL; /* no support */
 158    i915->pipe.get_occlusion_counter = NULL;
 159
 160    i915->winsys = winsys;
 161
 162    /*
 163     * Create drawing context and plug our rendering stage into it.
 164     */
 165    i915->draw = draw_create();
 166    assert(i915->draw);
 167    draw_set_setup_stage(i915->draw, i915_draw_render_stage(i915));
 168
 169    i915_init_buffer_functions(i915);
 170    i915_init_region_functions(i915);
 171    i915_init_surface_functions(i915);
 172    i915_init_state_functions(i915);
 173
 174    /*
 175     * XXX we could plug GL selection/feedback into the drawing pipeline
 176     * by specifying a different setup/render stage.
 177     */
 178
 179    return &i915->pipe;
 180 }
 181