Module: Mesa Branch: 7.11 Commit: 242a18dc46f1a81b701408289a87e34b1deb8599 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=242a18dc46f1a81b701408289a87e34b1deb8599
Author: Eric Anholt <e...@anholt.net> Date: Tue Jun 28 16:39:15 2011 -0700 mesa: Don't error on glFeedbackBuffer(size = 0, buffer = NULL) The existing error result doesn't appear in the GL 2.1 or 3.2 compatibility specs, and triggers an unexpected GL error in Intel's oglconform when it tries to reset the feedback state after usage so that the "diff the state at error time vs. context init time" code doesn't generate spurious diffs. The unexpected GL error then translates into testcase failure. Brian wants the safety check on buffer = NULL, though, so that people can't as easily set up a broken buffer. (cherry picked from commit 07e5295b6fe77253ea38dbc0d649b20e7275373a) --- src/mesa/main/feedback.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/mesa/main/feedback.c b/src/mesa/main/feedback.c index f9c4b5f..d73aa08 100644 --- a/src/mesa/main/feedback.c +++ b/src/mesa/main/feedback.c @@ -64,7 +64,7 @@ _mesa_FeedbackBuffer( GLsizei size, GLenum type, GLfloat *buffer ) _mesa_error( ctx, GL_INVALID_VALUE, "glFeedbackBuffer(size<0)" ); return; } - if (!buffer) { + if (!buffer && size > 0) { _mesa_error( ctx, GL_INVALID_VALUE, "glFeedbackBuffer(buffer==NULL)" ); ctx->Feedback.BufferSize = 0; return; _______________________________________________ mesa-commit mailing list mesa-commit@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-commit