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i915: Only align texture pitch to 64 bytes when textures can be render targets.

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This commit is contained in:
Michel Dänzer 2007-10-03 11:25:59 +02:00
parent 1bc84102ad
commit 58cdd1dc52
1 changed files with 16 additions and 8 deletions
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24
src/mesa/drivers/dri/i915/intel_mipmap_tree.c
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@ -99,19 +99,27 @@ intel_miptree_create(struct intel_context *intel,
if (ok) {
if (!mt->compressed) {
/* XXX: Align pitch to multiple of 64 bytes for now to allow
* render-to-texture to work in all cases. This should probably be
* replaced at some point by some scheme to only do this when really
* necessary.
*/
mt->pitch = (mt->pitch * cpp + 63) & ~63;
int align;
if (intel->intelScreen->ttm) {
/* XXX: Align pitch to multiple of 64 bytes for now to allow
* render-to-texture to work in all cases. This should probably be
* replaced at some point by some scheme to only do this when really
* necessary.
*/
align = 63;
} else {
align = 3;
}
mt->pitch = (mt->pitch * cpp + align) & ~align;
/* XXX: At least the i915 seems very upset when the pitch is a multiple
* of 1024 and sometimes 512 bytes - performance can drop by several
* times. Go to the next multiple of 64 for now.
* times. Go to the next multiple of the required alignment for now.
*/
if (!(mt->pitch & 511))
mt->pitch += 64;
mt->pitch += align + 1;
mt->pitch /= cpp;
}