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-rw-r--r--src/mesa/main/framebuffer.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index 5a13c88a7a..9d9c4217a6 100644
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -817,7 +817,7 @@ _mesa_update_framebuffer(GLcontext *ctx)
/**
* Check if the renderbuffer for a read operation (glReadPixels, glCopyPixels,
- * glCopyTex[Sub]Image, etc. exists.
+ * glCopyTex[Sub]Image, etc) exists.
* \param format a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,
* GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.
* \return GL_TRUE if buffer exists, GL_FALSE otherwise
@@ -825,8 +825,10 @@ _mesa_update_framebuffer(GLcontext *ctx)
GLboolean
_mesa_source_buffer_exists(GLcontext *ctx, GLenum format)
{
- const struct gl_renderbuffer_attachment *att
- = ctx->ReadBuffer->Attachment;
+ const struct gl_renderbuffer_attachment *att = ctx->ReadBuffer->Attachment;
+
+ /* state validation should have already been done */
+ ASSERT(ctx->NewState == 0x0);
if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
return GL_FALSE;
@@ -850,10 +852,8 @@ _mesa_source_buffer_exists(GLcontext *ctx, GLenum format)
if (ctx->ReadBuffer->_ColorReadBuffer == NULL) {
return GL_FALSE;
}
- /* XXX enable this post 6.5 release:
ASSERT(ctx->ReadBuffer->_ColorReadBuffer->RedBits > 0 ||
ctx->ReadBuffer->_ColorReadBuffer->IndexBits > 0);
- */
break;
case GL_DEPTH:
case GL_DEPTH_COMPONENT:
@@ -891,13 +891,15 @@ _mesa_source_buffer_exists(GLcontext *ctx, GLenum format)
/**
* As above, but for drawing operations.
- * XXX code do some code merging w/ above function.
+ * XXX could do some code merging w/ above function.
*/
GLboolean
_mesa_dest_buffer_exists(GLcontext *ctx, GLenum format)
{
- const struct gl_renderbuffer_attachment *att
- = ctx->ReadBuffer->Attachment;
+ const struct gl_renderbuffer_attachment *att = ctx->DrawBuffer->Attachment;
+
+ /* state validation should have already been done */
+ ASSERT(ctx->NewState == 0x0);
if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
return GL_FALSE;
@@ -918,7 +920,7 @@ _mesa_dest_buffer_exists(GLcontext *ctx, GLenum format)
case GL_BGRA:
case GL_ABGR_EXT:
case GL_COLOR_INDEX:
- /* nothing special */
+ /* Nothing special since GL_DRAW_BUFFER could be GL_NONE. */
/* Could assert that colorbuffer has RedBits > 0 */
break;
case GL_DEPTH:
@@ -945,7 +947,7 @@ _mesa_dest_buffer_exists(GLcontext *ctx, GLenum format)
break;
default:
_mesa_problem(ctx,
- "Unexpected format 0x%x in _mesa_source_buffer_exists",
+ "Unexpected format 0x%x in _mesa_dest_buffer_exists",
format);
return GL_FALSE;
}