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panfrost: Add AFBC stride unit tests 

Demonstrating correctness of the low level calculations.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16697>
This commit is contained in:
Alyssa Rosenzweig 2022-05-04 10:46:23 -04:00 committed by Marge Bot
parent 544a8894fc
commit 5944bbfa94
1 changed files with 73 additions and 0 deletions
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73
src/panfrost/lib/tests/test-layout.cpp
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@ -162,6 +162,79 @@ TEST(BlockSize, AFBCSuperblock64x4)
EXPECT_TRUE(panfrost_afbc_is_wide(modifier));
}
/* Calculate Bifrost line stride, since we have reference formulas for Bifrost
* stride calculations.
*/
static uint32_t pan_afbc_line_stride(uint64_t modifier, uint32_t width)
{
return pan_afbc_stride_blocks(modifier, pan_afbc_row_stride(modifier, width));
}
/* Which form of the stride we specify is hardware specific (row stride for
* Valhall, line stride for Bifrost). However, the layout code is hardware
* independent, so we test both row stride and line stride calculations.
*/
TEST(AFBCStride, Linear)
{
uint64_t modifiers[] = {
DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 |
AFBC_FORMAT_MOD_SPARSE),
DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 |
AFBC_FORMAT_MOD_SPARSE),
DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_64x4 |
AFBC_FORMAT_MOD_SPARSE),
};
for (unsigned m = 0; m < ARRAY_SIZE(modifiers); ++m) {
uint64_t modifier = modifiers[m];
uint32_t sw = panfrost_afbc_superblock_width(modifier);
uint32_t cases[] = { 1, 4, 17, 39 };
for (unsigned i = 0; i < ARRAY_SIZE(cases); ++i) {
uint32_t width = sw * cases[i];
EXPECT_EQ(pan_afbc_row_stride(modifier, width),
16 * DIV_ROUND_UP(width, sw));
EXPECT_EQ(pan_afbc_line_stride(modifier, width),
DIV_ROUND_UP(width, sw));
}
}
}
TEST(AFBCStride, Tiled)
{
uint64_t modifiers[] = {
DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 |
AFBC_FORMAT_MOD_TILED |
AFBC_FORMAT_MOD_SPARSE),
DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 |
AFBC_FORMAT_MOD_TILED |
AFBC_FORMAT_MOD_SPARSE),
DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_64x4 |
AFBC_FORMAT_MOD_TILED |
AFBC_FORMAT_MOD_SPARSE),
};
for (unsigned m = 0; m < ARRAY_SIZE(modifiers); ++m) {
uint64_t modifier = modifiers[m];
uint32_t sw = panfrost_afbc_superblock_width(modifier);
uint32_t cases[] = { 1, 4, 17, 39 };
for (unsigned i = 0; i < ARRAY_SIZE(cases); ++i) {
uint32_t width = sw * 8 * cases[i];
EXPECT_EQ(pan_afbc_row_stride(modifier, width),
16 * DIV_ROUND_UP(width, (sw * 8)) * 8 * 8);
EXPECT_EQ(pan_afbc_line_stride(modifier, width),
DIV_ROUND_UP(width, sw * 8) * 8);
}
}
}
TEST(LegacyStride, FromLegacyLinear)
{
EXPECT_EQ(panfrost_from_legacy_stride(1920 * 4, PIPE_FORMAT_R8G8B8A8_UINT, DRM_FORMAT_MOD_LINEAR), 1920 * 4);