src/gallium/drivers/nvfx/nv30_fragtex.c

   1 #include "util/u_format.h"
   2
   3 #include "nvfx_context.h"
   4 #include "nvfx_tex.h"
   5 #include "nvfx_resource.h"
   6
   7 void
   8 nv30_sampler_state_init(struct pipe_context *pipe,
   9                           struct nvfx_sampler_state *ps,
  10                           const struct pipe_sampler_state *cso)
  11 {
  12         if (cso->max_anisotropy >= 2)
  13         {
  14                 if (cso->max_anisotropy >= 8)
  15                         ps->en |= NV30_3D_TEX_ENABLE_ANISO_8X;
  16                 else if (cso->max_anisotropy >= 4)
  17                         ps->en |= NV30_3D_TEX_ENABLE_ANISO_4X;
  18                 else if (cso->max_anisotropy >= 2)
  19                         ps->en |= NV30_3D_TEX_ENABLE_ANISO_2X;
  20         }
  21
  22         ps->filt |= (int)(cso->lod_bias * 256.0) & 0x1fff;
  23
  24         ps->max_lod = (int)CLAMP(cso->max_lod, 0.0, 15.0);
  25         ps->min_lod = (int)CLAMP(cso->min_lod, 0.0, 15.0);
  26
  27         ps->en |= NV30_3D_TEX_ENABLE_ENABLE;
  28 }
  29
  30 void
  31 nv30_sampler_view_init(struct pipe_context *pipe,
  32                           struct nvfx_sampler_view *sv)
  33 {
  34         struct pipe_resource* pt = sv->base.texture;
  35         struct nvfx_texture_format *tf = &nvfx_texture_formats[sv->base.format];
  36         unsigned txf;
  37         unsigned level = pt->target == PIPE_TEXTURE_CUBE ? 0 : sv->base.u.tex.first_level;
  38
  39         assert(tf->fmt[0] >= 0);
  40
  41         txf = sv->u.init_fmt;
  42         txf |= (level != sv->base.u.tex.last_level ? NV30_3D_TEX_FORMAT_MIPMAP : 0);
  43         txf |= util_logbase2(u_minify(pt->width0, level)) << NV30_3D_TEX_FORMAT_BASE_SIZE_U__SHIFT;
  44         txf |= util_logbase2(u_minify(pt->height0, level)) << NV30_3D_TEX_FORMAT_BASE_SIZE_V__SHIFT;
  45         txf |= util_logbase2(u_minify(pt->depth0, level)) << NV30_3D_TEX_FORMAT_BASE_SIZE_W__SHIFT;
  46         txf |=  0x10000;
  47
  48         sv->u.nv30.fmt[0] = tf->fmt[0] | txf;
  49         sv->u.nv30.fmt[1] = tf->fmt[1] | txf;
  50         sv->u.nv30.fmt[2] = tf->fmt[2] | txf;
  51         sv->u.nv30.fmt[3] = tf->fmt[3] | txf;
  52
  53         sv->swizzle  |= (nvfx_subresource_pitch(pt, 0) << NV30_3D_TEX_SWIZZLE_RECT_PITCH__SHIFT);
  54
  55         if(pt->height0 <= 1 || util_format_is_compressed(sv->base.format))
  56                 sv->u.nv30.rect = -1;
  57         else
  58                 sv->u.nv30.rect = !!(pt->flags & NOUVEAU_RESOURCE_FLAG_LINEAR);
  59
  60         sv->lod_offset = sv->base.u.tex.first_level - level;
  61         sv->max_lod_limit = sv->base.u.tex.last_level - level;
  62 }
  63
  64 void
  65 nv30_fragtex_set(struct nvfx_context *nvfx, int unit)
  66 {
  67         struct nvfx_sampler_state *ps = nvfx->tex_sampler[unit];
  68         struct nvfx_sampler_view* sv = (struct nvfx_sampler_view*)nvfx->fragment_sampler_views[unit];
  69         struct nouveau_bo *bo = ((struct nvfx_miptree *)sv->base.texture)->base.bo;
  70         struct nouveau_channel* chan = nvfx->screen->base.channel;
  71         struct nouveau_grobj *eng3d = nvfx->screen->eng3d;
  72         unsigned txf;
  73         unsigned tex_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD;
  74         unsigned use_rect;
  75         unsigned max_lod = MIN2(ps->max_lod + sv->lod_offset, sv->max_lod_limit);
  76         unsigned min_lod = MIN2(ps->min_lod + sv->lod_offset, max_lod) ;
  77
  78         if(sv->u.nv30.rect < 0)
  79         {
  80                 /* in the case of compressed or 1D textures, we can get away with this,
  81                  * since the layout is the same
  82                  */
  83                 use_rect = ps->fmt;
  84         }
  85         else
  86         {
  87                 static boolean warned = FALSE;
  88                 if( !!ps->fmt != sv->u.nv30.rect && !warned) {
  89                         warned = TRUE;
  90                         fprintf(stderr,
  91                                         "Unimplemented: coordinate normalization mismatch. Possible reasons:\n"
  92                                         "1. ARB_texture_non_power_of_two is being used despite the fact it isn't supported\n"
  93                                         "2. The state tracker is not using the appropriate coordinate normalization\n"
  94                                         "3. The state tracker is not supported\n");
  95                 }
  96
  97                 use_rect  = sv->u.nv30.rect;
  98         }
  99
 100         txf = sv->u.nv30.fmt[ps->compare + (use_rect ? 2 : 0)];
 101
 102         MARK_RING(chan, 9, 2);
 103         BEGIN_RING(chan, eng3d, NV30_3D_TEX_OFFSET(unit), 8);
 104         OUT_RELOC(chan, bo, sv->offset, tex_flags | NOUVEAU_BO_LOW, 0, 0);
 105         OUT_RELOC(chan, bo, txf,
 106                 tex_flags | NOUVEAU_BO_OR,
 107                 NV30_3D_TEX_FORMAT_DMA0, NV30_3D_TEX_FORMAT_DMA1);
 108         OUT_RING(chan, (ps->wrap & sv->wrap_mask) | sv->wrap);
 109         OUT_RING(chan, ps->en | (min_lod << NV30_3D_TEX_ENABLE_MIPMAP_MIN_LOD__SHIFT) | (max_lod << NV30_3D_TEX_ENABLE_MIPMAP_MAX_LOD__SHIFT));
 110         OUT_RING(chan, sv->swizzle);
 111         OUT_RING(chan, ps->filt | sv->filt);
 112         OUT_RING(chan, sv->npot_size);
 113         OUT_RING(chan, ps->bcol);
 114
 115         nvfx->hw_txf[unit] = txf;
 116         nvfx->hw_samplers |= (1 << unit);
 117 }