src/gallium/drivers/nvfx/nv40_fragtex.c

   1 #include "util/u_format.h"
   2 #include "nvfx_context.h"
   3 #include "nvfx_tex.h"
   4 #include "nvfx_resource.h"
   5
   6 void
   7 nv40_sampler_state_init(struct pipe_context *pipe,
   8                           struct nvfx_sampler_state *ps,
   9                           const struct pipe_sampler_state *cso)
  10 {
  11         float limit;
  12         if (cso->max_anisotropy >= 2) {
  13                 /* no idea, binary driver sets it, works without it.. meh.. */
  14                 ps->wrap |= (1 << 5);
  15
  16                 if (cso->max_anisotropy >= 16)
  17                         ps->en |= NV40TCL_TEX_ENABLE_ANISO_16X;
  18                 else if (cso->max_anisotropy >= 12)
  19                         ps->en |= NV40TCL_TEX_ENABLE_ANISO_12X;
  20                 else if (cso->max_anisotropy >= 10)
  21                         ps->en |= NV40TCL_TEX_ENABLE_ANISO_10X;
  22                 else if (cso->max_anisotropy >= 8)
  23                         ps->en |= NV40TCL_TEX_ENABLE_ANISO_8X;
  24                 else if (cso->max_anisotropy >= 6)
  25                         ps->en |= NV40TCL_TEX_ENABLE_ANISO_6X;
  26                 else if (cso->max_anisotropy >= 4)
  27                         ps->en |= NV40TCL_TEX_ENABLE_ANISO_4X;
  28                 else
  29                         ps->en |= NV40TCL_TEX_ENABLE_ANISO_2X;
  30         }
  31
  32         limit = CLAMP(cso->lod_bias, -16.0, 15.0 + (255.0 / 256.0));
  33         ps->filt |= (int)(cso->lod_bias * 256.0) & 0x1fff;
  34
  35         ps->max_lod = (int)(CLAMP(cso->max_lod, 0.0, 15.0 + (255.0 / 256.0)) * 256.0);
  36         ps->min_lod = (int)(CLAMP(cso->min_lod, 0.0, 15.0 + (255.0 / 256.0)) * 256.0);
  37
  38         ps->en |= NV40TCL_TEX_ENABLE_ENABLE;
  39 }
  40
  41 void
  42 nv40_sampler_view_init(struct pipe_context *pipe,
  43                           struct nvfx_sampler_view *sv)
  44 {
  45         struct pipe_resource* pt = sv->base.texture;
  46         struct nvfx_miptree* mt = (struct nvfx_miptree*)pt;
  47         struct nvfx_texture_format *tf = &nvfx_texture_formats[sv->base.format];
  48         unsigned txf;
  49         unsigned level = pt->target == PIPE_TEXTURE_CUBE ? 0 : sv->base.first_level;
  50         assert(tf->fmt[4] >= 0);
  51
  52         txf = sv->u.init_fmt;
  53         txf |= 0x8000;
  54         if(pt->target == PIPE_TEXTURE_CUBE)
  55                 txf |= ((pt->last_level + 1) << NV40TCL_TEX_FORMAT_MIPMAP_COUNT_SHIFT);
  56         else
  57                 txf |= (((sv->base.last_level - sv->base.first_level) + 1) << NV40TCL_TEX_FORMAT_MIPMAP_COUNT_SHIFT);
  58
  59         if (!mt->linear_pitch)
  60                 sv->u.nv40.npot_size2 = 0;
  61         else {
  62                 sv->u.nv40.npot_size2  = mt->linear_pitch;
  63                 txf |= NV40TCL_TEX_FORMAT_LINEAR;
  64         }
  65
  66         sv->u.nv40.fmt[0] = tf->fmt[4] | txf;
  67         sv->u.nv40.fmt[1] = tf->fmt[5] | txf;
  68
  69         sv->u.nv40.npot_size2 |= (u_minify(pt->depth0, level) << NV40TCL_TEX_SIZE1_DEPTH_SHIFT);
  70
  71         sv->lod_offset = (sv->base.first_level - level) * 256;
  72         sv->max_lod_limit = (sv->base.last_level - level) * 256;
  73 }
  74
  75 void
  76 nv40_fragtex_set(struct nvfx_context *nvfx, int unit)
  77 {
  78         struct nouveau_channel* chan = nvfx->screen->base.channel;
  79         struct nvfx_sampler_state *ps = nvfx->tex_sampler[unit];
  80         struct nvfx_sampler_view* sv = (struct nvfx_sampler_view*)nvfx->fragment_sampler_views[unit];
  81         struct nouveau_bo *bo = ((struct nvfx_miptree *)sv->base.texture)->base.bo;
  82         unsigned tex_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD;
  83         unsigned txf;
  84         unsigned max_lod = MIN2(ps->max_lod + sv->lod_offset, sv->max_lod_limit);
  85         unsigned min_lod = MIN2(ps->min_lod + sv->lod_offset, max_lod);
  86
  87         txf = sv->u.nv40.fmt[ps->compare] | ps->fmt;
  88
  89         MARK_RING(chan, 11, 2);
  90         OUT_RING(chan, RING_3D(NV34TCL_TX_OFFSET(unit), 8));
  91         OUT_RELOC(chan, bo, sv->offset, tex_flags | NOUVEAU_BO_LOW, 0, 0);
  92         OUT_RELOC(chan, bo, txf, tex_flags | NOUVEAU_BO_OR,
  93                         NV34TCL_TX_FORMAT_DMA0, NV34TCL_TX_FORMAT_DMA1);
  94         OUT_RING(chan, (ps->wrap & sv->wrap_mask) | sv->wrap);
  95         OUT_RING(chan, ps->en | (min_lod << 19) | (max_lod << 7));
  96         OUT_RING(chan, sv->swizzle);
  97         OUT_RING(chan, ps->filt | sv->filt);
  98         OUT_RING(chan, sv->npot_size);
  99         OUT_RING(chan, ps->bcol);
 100         OUT_RING(chan, RING_3D(NV40TCL_TEX_SIZE1(unit), 1));
 101         OUT_RING(chan, sv->u.nv40.npot_size2);
 102
 103         nvfx->hw_txf[unit] = txf;
 104         nvfx->hw_samplers |= (1 << unit);
 105 }