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mesa: Compute proper strides for compressed texture pixel storage.

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Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Chris Forbes 2014-06-02 15:50:09 +12:00
parent 8d29569c25
commit be30766f56
1 changed files with 35 additions and 0 deletions
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35
src/mesa/main/texstore.c
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@ -4212,6 +4212,41 @@ _mesa_compute_compressed_pixelstore(GLuint dims, struct gl_texture_image *texIma
store->TotalRowsPerSlice = store->CopyRowsPerSlice =
(height + bh - 1) / bh;
store->CopySlices = depth;
if (packing->CompressedBlockWidth &&
packing->CompressedBlockSize) {
bw = packing->CompressedBlockWidth;
if (packing->RowLength) {
store->TotalBytesPerRow = packing->CompressedBlockSize *
(packing->RowLength + bw - 1) / bw;
}
store->SkipBytes += packing->SkipPixels * packing->CompressedBlockSize / bw;
}
if (dims > 1 && packing->CompressedBlockHeight &&
packing->CompressedBlockSize) {
bh = packing->CompressedBlockHeight;
store->SkipBytes += packing->SkipRows * store->TotalBytesPerRow / bh;
store->CopyRowsPerSlice = (height + bh - 1) / bh; /* rows in blocks */
if (packing->ImageHeight) {
store->TotalRowsPerSlice = (packing->ImageHeight + bh - 1) / bh;
}
}
if (dims > 2 && packing->CompressedBlockDepth &&
packing->CompressedBlockSize) {
int bd = packing->CompressedBlockDepth;
store->SkipBytes += packing->SkipImages * store->TotalBytesPerRow *
store->TotalRowsPerSlice / bd;
}
}