src/gallium/state_trackers/g3dvl/vl_data.c

   1 #include "vl_data.h"
   2
   3 /*
   4  * Represents 8 triangles (4 quads, 1 per block) in noormalized coords
   5  * that render a macroblock.
   6  * Need to be scaled to cover mbW*mbH macroblock pixels and translated into
   7  * position on target surface.
   8  */
   9 const struct vlVertex2f macroblock_verts[24] =
  10 {
  11         {0.0f, 0.0f}, {0.0f, 0.5f}, {0.5f, 0.0f},
  12         {0.5f, 0.0f}, {0.0f, 0.5f}, {0.5f, 0.5f},
  13
  14         {0.5f, 0.0f}, {0.5f, 0.5f}, {1.0f, 0.0f},
  15         {1.0f, 0.0f}, {0.5f, 0.5f}, {1.0f, 0.5f},
  16
  17         {0.0f, 0.5f}, {0.0f, 1.0f}, {0.5f, 0.5f},
  18         {0.5f, 0.5f}, {0.0f, 1.0f}, {0.5f, 1.0f},
  19
  20         {0.5f, 0.5f}, {0.5f, 1.0f}, {1.0f, 0.5f},
  21         {1.0f, 0.5f}, {0.5f, 1.0f}, {1.0f, 1.0f}
  22 };
  23
  24 /*
  25  * Represents texcoords for the above for rendering 4 luma blocks arranged
  26  * in a bW*(bH*4) texture. First luma block located at 0,0->bW,bH; second at
  27  * 0,bH->bW,2bH; third at 0,2bH->bW,3bH; fourth at 0,3bH->bW,4bH.
  28  */
  29 const struct vlVertex2f macroblock_luma_texcoords[24] =
  30 {
  31         {0.0f, 0.0f}, {0.0f, 0.25f}, {1.0f, 0.0f},
  32         {1.0f, 0.0f}, {0.0f, 0.25f}, {1.0f, 0.25f},
  33
  34         {0.0f, 0.25f}, {0.0f, 0.5f}, {1.0f, 0.25f},
  35         {1.0f, 0.25f}, {0.0f, 0.5f}, {1.0f, 0.5f},
  36
  37         {0.0f, 0.5f}, {0.0f, 0.75f}, {1.0f, 0.5f},
  38         {1.0f, 0.5f}, {0.0f, 0.75f}, {1.0f, 0.75f},
  39
  40         {0.0f, 0.75f}, {0.0f, 1.0f}, {1.0f, 0.75f},
  41         {1.0f, 0.75f}, {0.0f, 1.0f}, {1.0f, 1.0f}
  42 };
  43
  44 /*
  45  * Represents texcoords for the above for rendering 1 chroma block.
  46  * Straight forward 0,0->1,1 mapping so we can reuse the MB pos vectors.
  47  */
  48 const struct vlVertex2f *macroblock_chroma_420_texcoords = macroblock_verts;
  49
  50 /*
  51  * Represents texcoords for the above for rendering 2 chroma blocks arranged
  52  * in a bW*(bH*2) texture. First chroma block located at 0,0->bW,bH; second at
  53  * 0,bH->bW,2bH. We can render this with 0,0->1,1 mapping.
  54  * Straight forward 0,0->1,1 mapping so we can reuse MB pos vectors.
  55  */
  56 const struct vlVertex2f *macroblock_chroma_422_texcoords = macroblock_verts;
  57
  58 /*
  59  * Represents texcoords for the above for rendering 4 chroma blocks.
  60  * Same case as 4 luma blocks.
  61  */
  62 const struct vlVertex2f *macroblock_chroma_444_texcoords = macroblock_luma_texcoords;
  63
  64 /*
  65  * Used when rendering P and B macroblocks, multiplier is applied to the A channel,
  66  * which is then added to the L channel, then the bias is subtracted from that to
  67  * get back the differential. The differential is then added to the samples from the
  68  * reference surface(s).
  69  */
  70 #if 0
  71 const struct VL_MC_FS_CONSTS vl_mc_fs_consts =
  72 {
  73         {32767.0f / 255.0f, 32767.0f / 255.0f, 32767.0f / 255.0f, 0.0f},
  74         {0.5f, 2.0f, 0.0f, 0.0f}
  75 };
  76 #endif