src/mesa/drivers/dri/i965/brw_tex.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32
  33 #include "glheader.h"
  34 #include "mtypes.h"
  35 #include "imports.h"
  36 #include "simple_list.h"
  37 #include "enums.h"
  38 #include "image.h"
  39 #include "teximage.h"
  40 #include "texstore.h"
  41 #include "texformat.h"
  42 #include "texmem.h"
  43
  44 #include "intel_context.h"
  45 #include "intel_ioctl.h"
  46 #include "intel_regions.h"
  47 #include "brw_context.h"
  48 #include "brw_defines.h"
  49
  50
  51
  52
  53 static const struct gl_texture_format *
  54 brwChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
  55                          GLenum srcFormat, GLenum srcType )
  56 {
  57    switch ( internalFormat ) {
  58    case 4:
  59    case GL_RGBA:
  60    case GL_COMPRESSED_RGBA:
  61       if (srcFormat == GL_BGRA && srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV)
  62          return &_mesa_texformat_argb4444;
  63       else if (srcFormat == GL_BGRA && srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV)
  64          return &_mesa_texformat_argb1555;
  65       else if ((srcFormat == GL_RGBA && srcType == GL_UNSIGNED_INT_8_8_8_8_REV) ||
  66                (srcFormat == GL_RGBA && srcType == GL_UNSIGNED_BYTE) ||
  67                (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_INT_8_8_8_8))
  68          return &_mesa_texformat_rgba8888_rev;
  69       else
  70          return &_mesa_texformat_argb8888;
  71
  72    case GL_RGBA8:
  73    case GL_RGB10_A2:
  74    case GL_RGBA12:
  75    case GL_RGBA16:
  76       return &_mesa_texformat_argb8888;
  77
  78    case GL_RGB8:
  79    case GL_RGB10:
  80    case GL_RGB12:
  81    case GL_RGB16:
  82       /* Broadwater doesn't support RGB888 textures, so these must be
  83        * stored as ARGB.
  84        */
  85       return &_mesa_texformat_argb8888;
  86
  87    case 3:
  88    case GL_COMPRESSED_RGB:
  89    case GL_RGB:
  90       if (srcFormat == GL_RGB &&
  91           srcType == GL_UNSIGNED_SHORT_5_6_5)
  92          return &_mesa_texformat_rgb565;
  93       else
  94          return &_mesa_texformat_argb8888;
  95
  96
  97    case GL_RGB5:
  98    case GL_RGB5_A1:
  99       return &_mesa_texformat_argb1555;
 100
 101    case GL_R3_G3_B2:
 102    case GL_RGBA2:
 103    case GL_RGBA4:
 104    case GL_RGB4:
 105       return &_mesa_texformat_argb4444;
 106
 107    case GL_ALPHA:
 108    case GL_ALPHA4:
 109    case GL_ALPHA8:
 110    case GL_ALPHA12:
 111    case GL_ALPHA16:
 112    case GL_COMPRESSED_ALPHA:
 113       return &_mesa_texformat_a8;
 114
 115    case 1:
 116    case GL_LUMINANCE:
 117    case GL_LUMINANCE4:
 118    case GL_LUMINANCE8:
 119    case GL_LUMINANCE12:
 120    case GL_LUMINANCE16:
 121    case GL_COMPRESSED_LUMINANCE:
 122       return &_mesa_texformat_l8;
 123
 124    case 2:
 125    case GL_LUMINANCE_ALPHA:
 126    case GL_LUMINANCE4_ALPHA4:
 127    case GL_LUMINANCE6_ALPHA2:
 128    case GL_LUMINANCE8_ALPHA8:
 129    case GL_LUMINANCE12_ALPHA4:
 130    case GL_LUMINANCE12_ALPHA12:
 131    case GL_LUMINANCE16_ALPHA16:
 132    case GL_COMPRESSED_LUMINANCE_ALPHA:
 133       return &_mesa_texformat_al88;
 134
 135    case GL_INTENSITY:
 136    case GL_INTENSITY4:
 137    case GL_INTENSITY8:
 138    case GL_INTENSITY12:
 139    case GL_INTENSITY16:
 140    case GL_COMPRESSED_INTENSITY:
 141       return &_mesa_texformat_i8;
 142
 143    case GL_YCBCR_MESA:
 144       if (srcType == GL_UNSIGNED_SHORT_8_8_MESA ||
 145           srcType == GL_UNSIGNED_BYTE)
 146          return &_mesa_texformat_ycbcr;
 147       else
 148          return &_mesa_texformat_ycbcr_rev;
 149
 150    case GL_COMPRESSED_RGB_FXT1_3DFX:
 151        return &_mesa_texformat_rgb_fxt1;
 152    case GL_COMPRESSED_RGBA_FXT1_3DFX:
 153        return &_mesa_texformat_rgba_fxt1;
 154
 155    case GL_RGB_S3TC:
 156    case GL_RGB4_S3TC:
 157    case GL_RGBA_S3TC:
 158    case GL_RGBA4_S3TC:
 159    case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
 160    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
 161    case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
 162    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
 163      return &_mesa_texformat_rgb_dxt1; /* there is no rgba support? */
 164
 165    case GL_DEPTH_COMPONENT:
 166    case GL_DEPTH_COMPONENT16:
 167    case GL_DEPTH_COMPONENT24:
 168    case GL_DEPTH_COMPONENT32:
 169       return &_mesa_texformat_z16;
 170
 171    default:
 172       fprintf(stderr, "unexpected texture format %s in %s\n",
 173               _mesa_lookup_enum_by_nr(internalFormat),
 174               __FUNCTION__);
 175       return NULL;
 176    }
 177
 178    return NULL; /* never get here */
 179 }
 180
 181
 182 void brwInitTextureFuncs( struct dd_function_table *functions )
 183 {
 184    functions->ChooseTextureFormat = brwChooseTextureFormat;
 185 }
 186
 187 void brw_FrameBufferTexInit( struct brw_context *brw )
 188 {
 189    struct intel_context *intel = &brw->intel;
 190    GLcontext *ctx = &intel->ctx;
 191    struct intel_region *region = intel->front_region;
 192    struct gl_texture_object *obj;
 193    struct gl_texture_image *img;
 194
 195    intel->frame_buffer_texobj = obj =
 196       ctx->Driver.NewTextureObject( ctx, (GLuint) -1, GL_TEXTURE_2D );
 197
 198    obj->MinFilter = GL_NEAREST;
 199    obj->MagFilter = GL_NEAREST;
 200
 201    img = ctx->Driver.NewTextureImage( ctx );
 202
 203    _mesa_init_teximage_fields( ctx, GL_TEXTURE_2D, img,
 204                                region->pitch, region->height, 1, 0,
 205                                region->cpp == 4 ? GL_RGBA : GL_RGB );
 206
 207    _mesa_set_tex_image( obj, GL_TEXTURE_2D, 0, img );
 208 }
 209
 210 void brw_FrameBufferTexDestroy( struct brw_context *brw )
 211 {
 212    brw->intel.ctx.Driver.DeleteTexture( &brw->intel.ctx,
 213                                         brw->intel.frame_buffer_texobj );
 214 }