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softpipe: Add an extra code path for the buffer texel lookup

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With buffers the addressing is done on a per-byte bases so the code
path for normal textures doesn't work properly. Also add an assert
to make sure that the bit cound for storing the X coordinate is
large enough.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Gert Wollny 2019-04-07 08:37:45 +02:00 • committed by Gert Wollny
parent 47dd7c4054
commit 8cf8dfe408
1 changed files with 16 additions and 1 deletions
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17
src/gallium/drivers/softpipe/sp_tex_sample.c
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@ -574,6 +574,21 @@ compute_lambda_vert(const struct sp_sampler_view *sview,
static inline const float *
get_texel_buffer_no_border(const struct sp_sampler_view *sp_sview,
union tex_tile_address addr, int x, unsigned elmsize)
{
const struct softpipe_tex_cached_tile *tile;
addr.bits.x = x * elmsize / TEX_TILE_SIZE;
assert(x * elmsize / TEX_TILE_SIZE == addr.bits.x);
x %= TEX_TILE_SIZE / elmsize;
tile = sp_get_cached_tile_tex(sp_sview->cache, addr);
return &tile->data.color[0][x][0];
}
static inline const float *
get_texel_2d_no_border(const struct sp_sampler_view *sp_sview,
@ -3264,7 +3279,7 @@ sp_get_texels(const struct sp_sampler_view *sp_sview,
first_element,
first_element,
last_element);
tx = get_texel_2d_no_border(sp_sview, addr, x, 0);
tx = get_texel_buffer_no_border(sp_sview, addr, x, elem_size);
for (c = 0; c < 4; c++) {
rgba[c][j] = tx[c];
}