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freedreno/a6xx: Add a testcase for UBWC buffer sharing. 

These offsets are hand-computed referencing msm_media_info.h, and match
our driver's current behavior.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4931>
This commit is contained in:
Eric Anholt 2020-05-06 18:01:36 -07:00 committed by Marge Bot
parent e32783c644
commit dc7ccdb3f5
1 changed files with 22 additions and 4 deletions
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26
src/freedreno/fdl/fd6_layout_test.c
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@ -373,6 +373,23 @@ static const struct testcase testcases[] = {
},
},
/* Single-level RGBA8888 UBWC following UBWC alignment rules laid out in
* msm_media_info.h to verify that we don't break buffer sharing.
*/
{
.format = PIPE_FORMAT_R8G8B8A8_UNORM,
.layout = {
.tile_mode = TILE6_3,
.ubwc = true,
.width0 = 16384, .height0 = 129,
.slices = {
{ .offset = 1024 * 48, .pitch = 16384 * 4 },
},
.ubwc_slices = {
{ .offset = 0, .pitch = 1024 },
},
},
},
};
static bool test_layout(const struct testcase *testcase)
@ -385,7 +402,7 @@ static bool test_layout(const struct testcase *testcase)
int max_size = MAX2(testcase->layout.width0, testcase->layout.height0);
int mip_levels = 1;
while (max_size > 1) {
while (max_size > 1 && testcase->layout.slices[mip_levels].pitch) {
mip_levels++;
max_size = u_minify(max_size, 1);
}
@ -401,10 +418,11 @@ static bool test_layout(const struct testcase *testcase)
testcase->is_3d);
/* fdl lays out UBWC data before the color data, while all we have
* recorded in this testcase are the color offsets. Shift the fdl layout
* down so we can compare color offsets.
* recorded in this testcase are the color offsets (other than the UBWC
* buffer sharing test). Shift the fdl layout down so we can compare
* color offsets.
*/
if (layout.ubwc) {
if (layout.ubwc && !testcase->layout.slices[0].offset) {
for (int l = 1; l < mip_levels; l++)
layout.slices[l].offset -= layout.slices[0].offset;
layout.slices[0].offset = 0;