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gallium/util: observe sampler view's first_level in util_blit_pixels_tex()

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This lets us blit from a non-zero source level.
This commit is contained in:
Brian Paul 2011-09-17 13:19:52 -06:00
parent 1e939f5374
commit f63dbc600f
1 changed files with 10 additions and 6 deletions
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16
src/gallium/auxiliary/util/u_blit.c
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@ -660,8 +660,8 @@ void util_blit_flush( struct blit_state *ctx )
/**
* Copy pixel block from src texture to dst surface.
*
* XXX Should support selection of level.
* The sampler view's first_level field indicates the source
* mipmap level to use.
* XXX need some control over blitting Z and/or stencil.
*/
void
@ -694,10 +694,14 @@ util_blit_pixels_tex(struct blit_state *ctx,
if(normalized)
{
s0 /= (float)tex->width0;
s1 /= (float)tex->width0;
t0 /= (float)tex->height0;
t1 /= (float)tex->height0;
/* normalize according to the mipmap level's size */
int level = src_sampler_view->u.tex.first_level;
float w = (float) u_minify(tex->width0, level);
float h = (float) u_minify(tex->height0, level);
s0 /= w;
s1 /= w;
t0 /= h;
t1 /= h;
}
assert(ctx->pipe->screen->is_format_supported(ctx->pipe->screen, dst->format,