src/gallium/drivers/nvfx/nv30_fragtex.c

   1 #include "util/u_format.h"
   2
   3 #include "nvfx_context.h"
   4 #include "nouveau/nouveau_util.h"
   5 #include "nvfx_tex.h"
   6 #include "nvfx_resource.h"
   7
   8 void
   9 nv30_sampler_state_init(struct pipe_context *pipe,
  10                           struct nvfx_sampler_state *ps,
  11                           const struct pipe_sampler_state *cso)
  12 {
  13         if (cso->max_anisotropy >= 8) {
  14                 ps->en |= NV34TCL_TX_ENABLE_ANISO_8X;
  15         } else
  16         if (cso->max_anisotropy >= 4) {
  17                 ps->en |= NV34TCL_TX_ENABLE_ANISO_4X;
  18         } else
  19         if (cso->max_anisotropy >= 2) {
  20                 ps->en |= NV34TCL_TX_ENABLE_ANISO_2X;
  21         }
  22
  23         {
  24                 float limit;
  25
  26                 limit = CLAMP(cso->lod_bias, -16.0, 15.0);
  27                 ps->filt |= (int)(cso->lod_bias * 256.0) & 0x1fff;
  28
  29                 limit = CLAMP(cso->max_lod, 0.0, 15.0);
  30                 ps->en |= (int)(limit) << 14 /*NV34TCL_TX_ENABLE_MIPMAP_MAX_LOD_SHIFT*/;
  31
  32                 limit = CLAMP(cso->min_lod, 0.0, 15.0);
  33                 ps->en |= (int)(limit) << 26 /*NV34TCL_TX_ENABLE_MIPMAP_MIN_LOD_SHIFT*/;
  34         }
  35 }
  36
  37 #define _(m,tf,ts0x,ts0y,ts0z,ts0w,ts1x,ts1y,ts1z,ts1w)                        \
  38 {                                                                              \
  39   TRUE,                                                                        \
  40   PIPE_FORMAT_##m,                                                             \
  41   NV34TCL_TX_FORMAT_FORMAT_##tf,                                               \
  42   (NV34TCL_TX_SWIZZLE_S0_X_##ts0x | NV34TCL_TX_SWIZZLE_S0_Y_##ts0y |           \
  43    NV34TCL_TX_SWIZZLE_S0_Z_##ts0z | NV34TCL_TX_SWIZZLE_S0_W_##ts0w |           \
  44    NV34TCL_TX_SWIZZLE_S1_X_##ts1x | NV34TCL_TX_SWIZZLE_S1_Y_##ts1y |           \
  45    NV34TCL_TX_SWIZZLE_S1_Z_##ts1z | NV34TCL_TX_SWIZZLE_S1_W_##ts1w)            \
  46 }
  47
  48 struct nv30_texture_format {
  49         boolean defined;
  50         uint    pipe;
  51         int     format;
  52         int     swizzle;
  53 };
  54
  55 static struct nv30_texture_format
  56 nv30_texture_formats[] = {
  57         _(B8G8R8X8_UNORM, A8R8G8B8,   S1,   S1,   S1,  ONE, X, Y, Z, W),
  58         _(B8G8R8A8_UNORM, A8R8G8B8,   S1,   S1,   S1,   S1, X, Y, Z, W),
  59         _(B5G5R5A1_UNORM, A1R5G5B5,   S1,   S1,   S1,   S1, X, Y, Z, W),
  60         _(B4G4R4A4_UNORM, A4R4G4B4,   S1,   S1,   S1,   S1, X, Y, Z, W),
  61         _(B5G6R5_UNORM  , R5G6B5  ,   S1,   S1,   S1,  ONE, X, Y, Z, W),
  62         _(L8_UNORM      , L8      ,   S1,   S1,   S1,  ONE, X, X, X, X),
  63         _(A8_UNORM      , L8      , ZERO, ZERO, ZERO,   S1, X, X, X, X),
  64         _(I8_UNORM      , L8      ,   S1,   S1,   S1,   S1, X, X, X, X),
  65         _(L8A8_UNORM    , A8L8    ,   S1,   S1,   S1,   S1, X, X, X, Y),
  66         _(Z16_UNORM     , R5G6B5  ,   S1,   S1,   S1,  ONE, X, X, X, X),
  67         _(S8_USCALED_Z24_UNORM   , A8R8G8B8,   S1,   S1,   S1,  ONE, X, X, X, X),
  68         _(DXT1_RGB      , DXT1    ,   S1,   S1,   S1,  ONE, X, Y, Z, W),
  69         _(DXT1_RGBA     , DXT1    ,   S1,   S1,   S1,   S1, X, Y, Z, W),
  70         _(DXT3_RGBA     , DXT3    ,   S1,   S1,   S1,   S1, X, Y, Z, W),
  71         _(DXT5_RGBA     , DXT5    ,   S1,   S1,   S1,   S1, X, Y, Z, W),
  72         {},
  73 };
  74
  75 static struct nv30_texture_format *
  76 nv30_fragtex_format(uint pipe_format)
  77 {
  78         struct nv30_texture_format *tf = nv30_texture_formats;
  79
  80         while (tf->defined) {
  81                 if (tf->pipe == pipe_format)
  82                         return tf;
  83                 tf++;
  84         }
  85
  86         NOUVEAU_ERR("unknown texture format %s\n", util_format_name(pipe_format));
  87         return NULL;
  88 }
  89
  90
  91 struct nouveau_stateobj *
  92 nv30_fragtex_build(struct nvfx_context *nvfx, int unit)
  93 {
  94         struct nvfx_sampler_state *ps = nvfx->tex_sampler[unit];
  95         struct nvfx_miptree *nv30mt = (struct nvfx_miptree *)nvfx->fragment_sampler_views[unit]->texture;
  96         struct pipe_resource *pt = &nv30mt->base.base;
  97         struct nouveau_bo *bo = nv30mt->base.bo;
  98         struct nv30_texture_format *tf;
  99         struct nouveau_stateobj *so;
 100         uint32_t txf, txs;
 101         unsigned tex_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD;
 102
 103         tf = nv30_fragtex_format(pt->format);
 104         if (!tf)
 105                 return NULL;
 106
 107         txf  = tf->format;
 108         txf |= ((pt->last_level>0) ? NV34TCL_TX_FORMAT_MIPMAP : 0);
 109         txf |= log2i(pt->width0) << NV34TCL_TX_FORMAT_BASE_SIZE_U_SHIFT;
 110         txf |= log2i(pt->height0) << NV34TCL_TX_FORMAT_BASE_SIZE_V_SHIFT;
 111         txf |= log2i(pt->depth0) << NV34TCL_TX_FORMAT_BASE_SIZE_W_SHIFT;
 112         txf |= NV34TCL_TX_FORMAT_NO_BORDER | 0x10000;
 113
 114         switch (pt->target) {
 115         case PIPE_TEXTURE_CUBE:
 116                 txf |= NV34TCL_TX_FORMAT_CUBIC;
 117                 /* fall-through */
 118         case PIPE_TEXTURE_2D:
 119                 txf |= NV34TCL_TX_FORMAT_DIMS_2D;
 120                 break;
 121         case PIPE_TEXTURE_3D:
 122                 txf |= NV34TCL_TX_FORMAT_DIMS_3D;
 123                 break;
 124         case PIPE_TEXTURE_1D:
 125                 txf |= NV34TCL_TX_FORMAT_DIMS_1D;
 126                 break;
 127         default:
 128                 NOUVEAU_ERR("Unknown target %d\n", pt->target);
 129                 return NULL;
 130         }
 131
 132         txs = tf->swizzle;
 133
 134         so = so_new(1, 8, 2);
 135         so_method(so, nvfx->screen->eng3d, NV34TCL_TX_OFFSET(unit), 8);
 136         so_reloc (so, bo, 0, tex_flags | NOUVEAU_BO_LOW, 0, 0);
 137         so_reloc (so, bo, txf, tex_flags | NOUVEAU_BO_OR,
 138                       NV34TCL_TX_FORMAT_DMA0, NV34TCL_TX_FORMAT_DMA1);
 139         so_data  (so, ps->wrap);
 140         so_data  (so, NV34TCL_TX_ENABLE_ENABLE | ps->en);
 141         so_data  (so, txs);
 142         so_data  (so, ps->filt | 0x2000 /*voodoo*/);
 143         so_data  (so, (pt->width0 << NV34TCL_TX_NPOT_SIZE_W_SHIFT) |
 144                        pt->height0);
 145         so_data  (so, ps->bcol);
 146
 147         return so;
 148 }