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r300g: implement accelerated copy_region for compressed formats

This commit is contained in:
Marek Olšák 2011-02-10 11:20:05 +01:00
parent 7c24a4c6a8
commit fea4ad8f66
1 changed files with 29 additions and 0 deletions
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29
src/gallium/drivers/r300/r300_blit.c
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@ -418,6 +418,7 @@ static void r300_resource_copy_region(struct pipe_context *pipe,
struct pipe_resource new_dst = old_dst;
const struct util_format_description *desc =
util_format_description(dst->format);
struct pipe_box box;
if (r300->zmask_in_use && !r300->zmask_locked) {
if (fb->zsbuf->texture == src ||
@ -429,6 +430,7 @@ static void r300_resource_copy_region(struct pipe_context *pipe,
}
}
/* Handle non-renderable plain formats. */
if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN &&
(desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB ||
!pipe->screen->is_format_supported(pipe->screen,
@ -460,6 +462,33 @@ static void r300_resource_copy_region(struct pipe_context *pipe,
new_src.format = new_dst.format;
}
/* Handle compressed formats. */
if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
switch (util_format_get_blocksize(old_dst.format)) {
case 8:
/* 1 pixel = 4 bits,
* we set 1 pixel = 2 bytes ===> 4 times larger pixels. */
new_dst.format = PIPE_FORMAT_B4G4R4A4_UNORM;
break;
case 16:
/* 1 pixel = 8 bits,
* we set 1 pixel = 4 bytes ===> 4 times larger pixels. */
new_dst.format = PIPE_FORMAT_B8G8R8A8_UNORM;
break;
}
/* Since the pixels are 4 times larger, we must decrease
* the image size and the coordinates 4 times. */
new_src.format = new_dst.format;
new_dst.height0 /= 4;
new_src.height0 /= 4;
dsty /= 4;
box = *src_box;
box.y /= 4;
box.height /= 4;
src_box = &box;
}
if (old_src.format != new_src.format)
r300_resource_set_properties(pipe->screen, src, 0, &new_src);
if (old_dst.format != new_dst.format)