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#include "util/u_format.h"
#include "nvfx_context.h"
#include "nvfx_tex.h"
#include "nvfx_resource.h"
void
nv30_sampler_state_init(struct pipe_context *pipe,
struct nvfx_sampler_state *ps,
const struct pipe_sampler_state *cso)
{
float limit;
if (cso->max_anisotropy >= 2)
{
if (cso->max_anisotropy >= 8)
ps->en |= NV30_3D_TEX_ENABLE_ANISO_8X;
else if (cso->max_anisotropy >= 4)
ps->en |= NV30_3D_TEX_ENABLE_ANISO_4X;
else if (cso->max_anisotropy >= 2)
ps->en |= NV30_3D_TEX_ENABLE_ANISO_2X;
}
limit = CLAMP(cso->lod_bias, -16.0, 15.0 + (255.0 / 256.0));
ps->filt |= (int)(cso->lod_bias * 256.0) & 0x1fff;
ps->max_lod = (int)CLAMP(cso->max_lod, 0.0, 15.0);
ps->min_lod = (int)CLAMP(cso->min_lod, 0.0, 15.0);
ps->en |= NV30_3D_TEX_ENABLE_ENABLE;
}
void
nv30_sampler_view_init(struct pipe_context *pipe,
struct nvfx_sampler_view *sv)
{
struct pipe_resource* pt = sv->base.texture;
struct nvfx_texture_format *tf = &nvfx_texture_formats[sv->base.format];
unsigned txf;
unsigned level = pt->target == PIPE_TEXTURE_CUBE ? 0 : sv->base.first_level;
assert(tf->fmt[0] >= 0);
txf = sv->u.init_fmt;
txf |= (level != sv->base.last_level ? NV30_3D_TEX_FORMAT_MIPMAP : 0);
txf |= util_logbase2(u_minify(pt->width0, level)) << NV30_3D_TEX_FORMAT_BASE_SIZE_U__SHIFT;
txf |= util_logbase2(u_minify(pt->height0, level)) << NV30_3D_TEX_FORMAT_BASE_SIZE_V__SHIFT;
txf |= util_logbase2(u_minify(pt->depth0, level)) << NV30_3D_TEX_FORMAT_BASE_SIZE_W__SHIFT;
txf |= 0x10000;
sv->u.nv30.fmt[0] = tf->fmt[0] | txf;
sv->u.nv30.fmt[1] = tf->fmt[1] | txf;
sv->u.nv30.fmt[2] = tf->fmt[2] | txf;
sv->u.nv30.fmt[3] = tf->fmt[3] | txf;
sv->swizzle |= (nvfx_subresource_pitch(pt, 0) << NV30_3D_TEX_SWIZZLE_RECT_PITCH__SHIFT);
if(pt->height0 <= 1 || util_format_is_compressed(sv->base.format))
sv->u.nv30.rect = -1;
else
sv->u.nv30.rect = !!(pt->flags & NVFX_RESOURCE_FLAG_LINEAR);
sv->lod_offset = sv->base.first_level - level;
sv->max_lod_limit = sv->base.last_level - level;
}
void
nv30_fragtex_set(struct nvfx_context *nvfx, int unit)
{
struct nvfx_sampler_state *ps = nvfx->tex_sampler[unit];
struct nvfx_sampler_view* sv = (struct nvfx_sampler_view*)nvfx->fragment_sampler_views[unit];
struct nouveau_bo *bo = ((struct nvfx_miptree *)sv->base.texture)->base.bo;
struct nouveau_channel* chan = nvfx->screen->base.channel;
unsigned txf;
unsigned tex_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD;
unsigned use_rect;
unsigned max_lod = MIN2(ps->max_lod + sv->lod_offset, sv->max_lod_limit);
unsigned min_lod = MIN2(ps->min_lod + sv->lod_offset, max_lod) ;
if(sv->u.nv30.rect < 0)
{
/* in the case of compressed or 1D textures, we can get away with this,
* since the layout is the same
*/
use_rect = ps->fmt;
}
else
{
static boolean warned = FALSE;
if( !!ps->fmt != sv->u.nv30.rect && !warned) {
warned = TRUE;
fprintf(stderr,
"Unimplemented: coordinate normalization mismatch. Possible reasons:\n"
"1. ARB_texture_non_power_of_two is being used despite the fact it isn't supported\n"
"2. The state tracker is not using the appropriate coordinate normalization\n"
"3. The state tracker is not supported\n");
}
use_rect = sv->u.nv30.rect;
}
txf = sv->u.nv30.fmt[ps->compare + (use_rect ? 2 : 0)];
MARK_RING(chan, 9, 2);
OUT_RING(chan, RING_3D(NV30_3D_TEX_OFFSET(unit), 8));
OUT_RELOC(chan, bo, sv->offset, tex_flags | NOUVEAU_BO_LOW, 0, 0);
OUT_RELOC(chan, bo, txf,
tex_flags | NOUVEAU_BO_OR,
NV30_3D_TEX_FORMAT_DMA0, NV30_3D_TEX_FORMAT_DMA1);
OUT_RING(chan, (ps->wrap & sv->wrap_mask) | sv->wrap);
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));
OUT_RING(chan, sv->swizzle);
OUT_RING(chan, ps->filt | sv->filt);
OUT_RING(chan, sv->npot_size);
OUT_RING(chan, ps->bcol);
nvfx->hw_txf[unit] = txf;
nvfx->hw_samplers |= (1 << unit);
}
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