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>
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@ -162,6 +162,79 @@ TEST(BlockSize, AFBCSuperblock64x4)
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EXPECT_TRUE(panfrost_afbc_is_wide(modifier));
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}
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/* Calculate Bifrost line stride, since we have reference formulas for Bifrost
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* stride calculations.
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*/
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static uint32_t pan_afbc_line_stride(uint64_t modifier, uint32_t width)
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{
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return pan_afbc_stride_blocks(modifier, pan_afbc_row_stride(modifier, width));
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}
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/* Which form of the stride we specify is hardware specific (row stride for
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* Valhall, line stride for Bifrost). However, the layout code is hardware
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* independent, so we test both row stride and line stride calculations.
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*/
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TEST(AFBCStride, Linear)
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{
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uint64_t modifiers[] = {
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DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 |
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AFBC_FORMAT_MOD_SPARSE),
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DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 |
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AFBC_FORMAT_MOD_SPARSE),
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DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_64x4 |
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AFBC_FORMAT_MOD_SPARSE),
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};
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for (unsigned m = 0; m < ARRAY_SIZE(modifiers); ++m) {
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uint64_t modifier = modifiers[m];
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uint32_t sw = panfrost_afbc_superblock_width(modifier);
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uint32_t cases[] = { 1, 4, 17, 39 };
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for (unsigned i = 0; i < ARRAY_SIZE(cases); ++i) {
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uint32_t width = sw * cases[i];
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EXPECT_EQ(pan_afbc_row_stride(modifier, width),
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16 * DIV_ROUND_UP(width, sw));
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EXPECT_EQ(pan_afbc_line_stride(modifier, width),
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DIV_ROUND_UP(width, sw));
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}
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}
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}
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TEST(AFBCStride, Tiled)
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{
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uint64_t modifiers[] = {
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DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 |
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AFBC_FORMAT_MOD_TILED |
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AFBC_FORMAT_MOD_SPARSE),
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DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 |
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AFBC_FORMAT_MOD_TILED |
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AFBC_FORMAT_MOD_SPARSE),
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DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_64x4 |
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AFBC_FORMAT_MOD_TILED |
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AFBC_FORMAT_MOD_SPARSE),
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};
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for (unsigned m = 0; m < ARRAY_SIZE(modifiers); ++m) {
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uint64_t modifier = modifiers[m];
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uint32_t sw = panfrost_afbc_superblock_width(modifier);
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uint32_t cases[] = { 1, 4, 17, 39 };
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for (unsigned i = 0; i < ARRAY_SIZE(cases); ++i) {
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uint32_t width = sw * 8 * cases[i];
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EXPECT_EQ(pan_afbc_row_stride(modifier, width),
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16 * DIV_ROUND_UP(width, (sw * 8)) * 8 * 8);
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EXPECT_EQ(pan_afbc_line_stride(modifier, width),
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DIV_ROUND_UP(width, sw * 8) * 8);
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}
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}
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}
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TEST(LegacyStride, FromLegacyLinear)
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{
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EXPECT_EQ(panfrost_from_legacy_stride(1920 * 4, PIPE_FORMAT_R8G8B8A8_UINT, DRM_FORMAT_MOD_LINEAR), 1920 * 4);
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