Mesa (master): intel: use more efficient loop over buffers
Brian Paul
brianp at kemper.freedesktop.org
Sun Aug 30 15:16:26 UTC 2009
Module: Mesa
Branch: master
Commit: a068e098e275fc5d2aba309165263834f429143e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a068e098e275fc5d2aba309165263834f429143e
Author: Brian Paul <brianp at vmware.com>
Date: Thu Aug 27 14:34:21 2009 -0600
intel: use more efficient loop over buffers
---
src/mesa/drivers/dri/intel/intel_clear.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/src/mesa/drivers/dri/intel/intel_clear.c b/src/mesa/drivers/dri/intel/intel_clear.c
index cfddabd..630d2ad 100644
--- a/src/mesa/drivers/dri/intel/intel_clear.c
+++ b/src/mesa/drivers/dri/intel/intel_clear.c
@@ -150,14 +150,18 @@ intelClear(GLcontext *ctx, GLbitfield mask)
/* SW fallback clearing */
swrast_mask = mask & ~tri_mask & ~blit_mask;
- for (i = 0; i < BUFFER_COUNT; i++) {
- GLuint bufBit = 1 << i;
- if ((blit_mask | tri_mask) & bufBit) {
+ {
+ /* look for non-Intel renderbuffers (clear them with swrast) */
+ GLbitfield blit_or_tri = blit_mask | tri_mask;
+ while (blit_or_tri) {
+ GLuint i = _mesa_ffs(blit_or_tri) - 1;
+ GLbitfield bufBit = 1 << i;
if (!fb->Attachment[i].Renderbuffer->ClassID) {
blit_mask &= ~bufBit;
tri_mask &= ~bufBit;
swrast_mask |= bufBit;
}
+ blit_or_tri ^= bufBit;
}
}
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