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-rw-r--r--src/mesa/drivers/dri/common/drirenderbuffer.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/common/drirenderbuffer.c b/src/mesa/drivers/dri/common/drirenderbuffer.c
index 8376fa2717..817cb86c52 100644
--- a/src/mesa/drivers/dri/common/drirenderbuffer.c
+++ b/src/mesa/drivers/dri/common/drirenderbuffer.c
@@ -39,7 +39,7 @@ driDeleteRenderbuffer(struct gl_renderbuffer *rb)
* \param format Either GL_RGBA, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24,
* GL_DEPTH_COMPONENT32, or GL_STENCIL_INDEX8_EXT (for now).
* \param cpp chars or bytes per pixel
- * \param offset start of buffer with respect to framebuffer address
+ * \param offset start of renderbuffer with respect to start of framebuffer
* \param pitch pixels per row
*/
driRenderbuffer *
@@ -124,7 +124,11 @@ driFlipRenderbuffers(struct gl_framebuffer *fb, GLboolean flipped)
const GLuint count = fb->Visual.stereoMode ? 2 : 1;
GLuint lr; /* left or right */
- ASSERT(fb->Visual.doubleBufferMode);
+ /* we shouldn't really call this function if single-buffered, but
+ * play it safe.
+ */
+ if (!fb->Visual.doubleBufferMode)
+ return;
for (lr = 0; lr < count; lr++) {
GLuint frontBuf = (lr == 0) ? BUFFER_FRONT_LEFT : BUFFER_FRONT_RIGHT;