Mesa (master): intel: Fix accum buffer mapping since the swrast rework.
Eric Anholt
anholt at kemper.freedesktop.org
Fri Jan 27 19:45:04 UTC 2012
Module: Mesa
Branch: master
Commit: 42e9936ce6bcac9f863b2f85978489e4f804e927
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=42e9936ce6bcac9f863b2f85978489e4f804e927
Author: Eric Anholt <eric at anholt.net>
Date: Tue Jan 24 15:52:52 2012 -0800
intel: Fix accum buffer mapping since the swrast rework.
A pure swrast-allocated buffer gets an irb of NULL, so we segfaulted
in the clear-accum test. Just look at the swrast renderbuffer pointer
for handling swrast rbs.
---
src/mesa/drivers/dri/intel/intel_fbo.c | 12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/src/mesa/drivers/dri/intel/intel_fbo.c b/src/mesa/drivers/dri/intel/intel_fbo.c
index 3a35a01..27b0bfc 100644
--- a/src/mesa/drivers/dri/intel/intel_fbo.c
+++ b/src/mesa/drivers/dri/intel/intel_fbo.c
@@ -128,15 +128,16 @@ intel_map_renderbuffer(struct gl_context *ctx,
GLint *out_stride)
{
struct intel_context *intel = intel_context(ctx);
+ struct swrast_renderbuffer *srb = (struct swrast_renderbuffer *)rb;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
void *map;
int stride;
- if (!irb && irb->Base.Buffer) {
- /* this is a malloc'd renderbuffer (accum buffer) */
+ if (srb->Buffer) {
+ /* this is a malloc'd renderbuffer (accum buffer), not an irb */
GLint bpp = _mesa_get_format_bytes(rb->Format);
- GLint rowStride = irb->Base.RowStride;
- *out_map = (GLubyte *) irb->Base.Buffer + y * rowStride + x * bpp;
+ GLint rowStride = srb->RowStride;
+ *out_map = (GLubyte *) srb->Buffer + y * rowStride + x * bpp;
*out_stride = rowStride;
return;
}
@@ -180,12 +181,13 @@ intel_unmap_renderbuffer(struct gl_context *ctx,
struct gl_renderbuffer *rb)
{
struct intel_context *intel = intel_context(ctx);
+ struct swrast_renderbuffer *srb = (struct swrast_renderbuffer *)rb;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
DBG("%s: rb %d (%s)\n", __FUNCTION__,
rb->Name, _mesa_get_format_name(rb->Format));
- if (!irb && irb->Base.Buffer) {
+ if (srb->Buffer) {
/* this is a malloc'd renderbuffer (accum buffer) */
/* nothing to do */
return;
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