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         float limit;
  13
  14         if (cso->max_anisotropy >= 2)
  15         {
  16                 if (cso->max_anisotropy >= 8)
  17                         ps->en |= NV34TCL_TX_ENABLE_ANISO_8X;
  18                 else if (cso->max_anisotropy >= 4)
  19                         ps->en |= NV34TCL_TX_ENABLE_ANISO_4X;
  20                 else if (cso->max_anisotropy >= 2)
  21                         ps->en |= NV34TCL_TX_ENABLE_ANISO_2X;
  22         }
  23
  24         limit = CLAMP(cso->lod_bias, -16.0, 15.0 + (255.0 / 256.0));
  25         ps->filt |= (int)(cso->lod_bias * 256.0) & 0x1fff;
  26
  27         ps->max_lod = (int)CLAMP(cso->max_lod, 0.0, 15.0);
  28         ps->min_lod = (int)CLAMP(cso->min_lod, 0.0, 15.0);
  29
  30         ps->en |= NV34TCL_TX_ENABLE_ENABLE;
  31 }
  32
  33 void
  34 nv30_sampler_view_init(struct pipe_context *pipe,
  35                           struct nvfx_sampler_view *sv)
  36 {
  37         struct pipe_resource* pt = sv->base.texture;
  38         struct nvfx_texture_format *tf = &nvfx_texture_formats[sv->base.format];
  39         unsigned txf;
  40         unsigned level = pt->target == PIPE_TEXTURE_CUBE ? 0 : sv->base.first_level;
  41
  42         assert(tf->fmt[0] >= 0);
  43
  44         txf = sv->u.init_fmt;
  45         txf |= (level != sv->base.last_level ? NV34TCL_TX_FORMAT_MIPMAP : 0);
  46         txf |= util_logbase2(u_minify(pt->width0, level)) << NV34TCL_TX_FORMAT_BASE_SIZE_U_SHIFT;
  47         txf |= util_logbase2(u_minify(pt->height0, level)) << NV34TCL_TX_FORMAT_BASE_SIZE_V_SHIFT;
  48         txf |= util_logbase2(u_minify(pt->depth0, level)) << NV34TCL_TX_FORMAT_BASE_SIZE_W_SHIFT;
  49         txf |=  0x10000;
  50
  51         sv->u.nv30.fmt[0] = tf->fmt[0] | txf;
  52         sv->u.nv30.fmt[1] = tf->fmt[1] | txf;
  53         sv->u.nv30.fmt[2] = tf->fmt[2] | txf;
  54         sv->u.nv30.fmt[3] = tf->fmt[3] | txf;
  55
  56         sv->swizzle  |= (nvfx_subresource_pitch(pt, 0) << NV34TCL_TX_SWIZZLE_RECT_PITCH_SHIFT);
  57
  58         if(pt->height0 <= 1 || util_format_is_compressed(sv->base.format))
  59                 sv->u.nv30.rect = -1;
  60         else
  61                 sv->u.nv30.rect = !!(pt->flags & NVFX_RESOURCE_FLAG_LINEAR);
  62
  63         sv->lod_offset = sv->base.first_level - level;
  64         sv->max_lod_limit = sv->base.last_level - level;
  65 }
  66
  67 void
  68 nv30_fragtex_set(struct nvfx_context *nvfx, int unit)
  69 {
  70         struct nvfx_sampler_state *ps = nvfx->tex_sampler[unit];
  71         struct nvfx_sampler_view* sv = (struct nvfx_sampler_view*)nvfx->fragment_sampler_views[unit];
  72         struct nouveau_bo *bo = ((struct nvfx_miptree *)sv->base.texture)->base.bo;
  73         struct nouveau_channel* chan = nvfx->screen->base.channel;
  74         unsigned txf;
  75         unsigned tex_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD;
  76         unsigned use_rect;
  77         unsigned max_lod = MIN2(ps->max_lod + sv->lod_offset, sv->max_lod_limit);
  78         unsigned min_lod = MIN2(ps->min_lod + sv->lod_offset, max_lod) ;
  79
  80         if(sv->u.nv30.rect < 0)
  81         {
  82                 /* in the case of compressed or 1D textures, we can get away with this,
  83                  * since the layout is the same
  84                  */
  85                 use_rect = ps->fmt;
  86         }
  87         else
  88         {
  89                 static boolean warned = FALSE;
  90                 if( !!ps->fmt != sv->u.nv30.rect && !warned) {
  91                         warned = TRUE;
  92                         fprintf(stderr,
  93                                         "Unimplemented: coordinate normalization mismatch. Possible reasons:\n"
  94                                         "1. ARB_texture_non_power_of_two is being used despite the fact it isn't supported\n"
  95                                         "2. The state tracker is not using the appropriate coordinate normalization\n"
  96                                         "3. The state tracker is not supported\n");
  97                 }
  98
  99                 use_rect  = sv->u.nv30.rect;
 100         }
 101
 102         txf = sv->u.nv30.fmt[ps->compare + (use_rect ? 2 : 0)];
 103
 104         MARK_RING(chan, 9, 2);
 105         OUT_RING(chan, RING_3D(NV34TCL_TX_OFFSET(unit), 8));
 106         OUT_RELOC(chan, bo, sv->offset, tex_flags | NOUVEAU_BO_LOW, 0, 0);
 107         OUT_RELOC(chan, bo, txf,
 108                 tex_flags | NOUVEAU_BO_OR,
 109                 NV34TCL_TX_FORMAT_DMA0, NV34TCL_TX_FORMAT_DMA1);
 110         OUT_RING(chan, (ps->wrap & sv->wrap_mask) | sv->wrap);
 111         OUT_RING(chan, ps->en | (min_lod << NV34TCL_TX_ENABLE_MIPMAP_MIN_LOD_SHIFT) | (max_lod << NV34TCL_TX_ENABLE_MIPMAP_MAX_LOD_SHIFT));
 112         OUT_RING(chan, sv->swizzle);
 113         OUT_RING(chan, ps->filt | sv->filt);
 114         OUT_RING(chan, sv->npot_size);
 115         OUT_RING(chan, ps->bcol);
 116
 117         nvfx->hw_txf[unit] = txf;
 118         nvfx->hw_samplers |= (1 << unit);
 119 }