panfrost: Add panfrost_block_dim helper
So we can calculate strides of block-based formats correctly. Will help us down the road for Bifrost AFBC. Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7081>
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@ -206,6 +206,28 @@ panfrost_estimate_texture_payload_size(
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* currently unknown.
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*/
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static unsigned
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panfrost_block_dim(uint64_t modifier, bool width, unsigned plane)
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{
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if (!drm_is_afbc(modifier)) {
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assert(modifier == DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED);
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return 16;
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}
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switch (modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) {
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case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16:
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return 16;
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case AFBC_FORMAT_MOD_BLOCK_SIZE_32x8:
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return width ? 32 : 32;
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case AFBC_FORMAT_MOD_BLOCK_SIZE_64x4:
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return width ? 64 : 4;
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case AFBC_FORMAT_MOD_BLOCK_SIZE_32x8_64x4:
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return plane ? (width ? 64 : 4) : (width ? 32 : 8);
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default:
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unreachable("Invalid AFBC block size");
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}
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}
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static unsigned
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panfrost_nonlinear_stride(uint64_t modifier,
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unsigned bytes_per_pixel,
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