src/gallium/drivers/nv04/nv04_fragtex.c

   1 #include "nv04_context.h"
   2 #include "nouveau/nouveau_util.h"
   3
   4 #define _(m,tf)                                                                \
   5 {                                                                              \
   6   PIPE_FORMAT_##m,                                                             \
   7   NV04_TEXTURED_TRIANGLE_FORMAT_COLOR_##tf,                                               \
   8 }
   9
  10 struct nv04_texture_format {
  11         uint    pipe;
  12         int     format;
  13 };
  14
  15 static struct nv04_texture_format
  16 nv04_texture_formats[] = {
  17         _(A8R8G8B8_UNORM, A8R8G8B8),
  18         _(X8R8G8B8_UNORM, X8R8G8B8),
  19         _(A1R5G5B5_UNORM, A1R5G5B5),
  20         _(A4R4G4B4_UNORM, A4R4G4B4),
  21         _(L8_UNORM,       Y8      ),
  22         _(A8_UNORM,       Y8      ),
  23 };
  24
  25 static uint32_t
  26 nv04_fragtex_format(uint pipe_format)
  27 {
  28         struct nv04_texture_format *tf = nv04_texture_formats;
  29         int i;
  30
  31         for (i=0; i< sizeof(nv04_texture_formats)/sizeof(nv04_texture_formats[0]); i++) {
  32                 if (tf->pipe == pipe_format)
  33                         return tf->format;
  34                 tf++;
  35         }
  36
  37         NOUVEAU_ERR("unknown texture format %s\n", pf_name(pipe_format));
  38         return 0;
  39 }
  40
  41
  42 static void
  43 nv04_fragtex_build(struct nv04_context *nv04, int unit)
  44 {
  45         struct nv04_miptree *nv04mt = nv04->tex_miptree[unit];
  46         struct pipe_texture *pt = &nv04mt->base;
  47
  48         switch (pt->target) {
  49         case PIPE_TEXTURE_2D:
  50                 break;
  51         default:
  52                 NOUVEAU_ERR("Unknown target %d\n", pt->target);
  53                 return;
  54         }
  55
  56         nv04->fragtex.format = NV04_TEXTURED_TRIANGLE_FORMAT_ORIGIN_ZOH_CORNER
  57                 | NV04_TEXTURED_TRIANGLE_FORMAT_ORIGIN_FOH_CORNER
  58                 | nv04_fragtex_format(pt->format)
  59                 | ( (pt->last_level + 1) << NV04_TEXTURED_TRIANGLE_FORMAT_MIPMAP_LEVELS_SHIFT )
  60                 | ( log2i(pt->width0) << NV04_TEXTURED_TRIANGLE_FORMAT_BASE_SIZE_U_SHIFT )
  61                 | ( log2i(pt->height0) << NV04_TEXTURED_TRIANGLE_FORMAT_BASE_SIZE_V_SHIFT )
  62                 | NV04_TEXTURED_TRIANGLE_FORMAT_ADDRESSU_CLAMP_TO_EDGE
  63                 | NV04_TEXTURED_TRIANGLE_FORMAT_ADDRESSV_CLAMP_TO_EDGE
  64                 ;
  65 }
  66
  67
  68 void
  69 nv04_fragtex_bind(struct nv04_context *nv04)
  70 {
  71         nv04_fragtex_build(nv04, 0);
  72 }
  73