Mesa (main): panfrost: Add a tiled 16x16 layout unit test
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Thu May 26 16:12:43 UTC 2022
Module: Mesa
Branch: main
Commit: 65ba39f84cc721c20ac1c7351fd8222d9f718059
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=65ba39f84cc721c20ac1c7351fd8222d9f718059
Author: Alyssa Rosenzweig <alyssa at collabora.com>
Date: Wed May 4 11:16:48 2022 -0400
panfrost: Add a tiled 16x16 layout unit test
To exercise the layout code introduced in this series.
Signed-off-by: Alyssa Rosenzweig <alyssa at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16697>
---
src/panfrost/lib/tests/test-layout.cpp | 39 ++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/src/panfrost/lib/tests/test-layout.cpp b/src/panfrost/lib/tests/test-layout.cpp
index 898e83b54e4..3c8e97956e0 100644
--- a/src/panfrost/lib/tests/test-layout.cpp
+++ b/src/panfrost/lib/tests/test-layout.cpp
@@ -390,3 +390,42 @@ TEST(AFBCLayout, Linear3D)
EXPECT_EQ(l.slices[0].surface_stride, 2048); /* XXX: Not meaningful? */
EXPECT_EQ(l.slices[0].size, 32768); /* XXX: Not used by anything and wrong */
}
+
+TEST(AFBCLayout, Tiled16x16)
+{
+ uint64_t modifier = DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 |
+ AFBC_FORMAT_MOD_TILED |
+ AFBC_FORMAT_MOD_SPARSE);
+
+ struct pan_image_layout l = {
+ .modifier = modifier,
+ .format = PIPE_FORMAT_R8G8B8A8_UNORM,
+ .width = 917,
+ .height = 417,
+ .depth = 1,
+ .nr_samples = 1,
+ .dim = MALI_TEXTURE_DIMENSION_2D,
+ .nr_slices = 1
+ };
+
+ ASSERT_TRUE(pan_image_layout_init(&l, NULL));
+
+ /* The image is 917x417. Superblocks are 16x16, so there are 58x27
+ * superblocks. Superblocks are grouped into 8x8 tiles, so there are 8x4
+ * tiles of superblocks. So the row stride is 16 * 8 * 8 * 8 = 8192 bytes.
+ * There are 4 tiles vertically, so the header is 8192 * 4 = 32768 bytes.
+ * This is already 4096-byte aligned.
+ *
+ * Each tile of superblock contains 128x128 pixels and each pixel is 4 bytes,
+ * so tiles are 65536 bytes, meaning the payload is 8 * 4 * 65536 = 2097152
+ * bytes.
+ *
+ * In total, the AFBC surface is 32768 + 2097152 = 2129920 bytes.
+ */
+ EXPECT_EQ(l.slices[0].offset, 0);
+ EXPECT_EQ(l.slices[0].row_stride, 8192);
+ EXPECT_EQ(l.slices[0].afbc.header_size, 32768);
+ EXPECT_EQ(l.slices[0].afbc.body_size, 2097152);
+ EXPECT_EQ(l.slices[0].surface_stride, 2129920);
+ EXPECT_EQ(l.slices[0].size, 2129920);
+}
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