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authorEric Anholt <[email protected]>2010-09-07 14:31:22 -0700
committerEric Anholt <[email protected]>2010-09-07 14:34:23 -0700
commit50a3349bee04088bee3491622d6ef3c032d01eac (patch)
tree6c89ebe510804f81e2262c4f59eedb579d055a96 /src/mesa
parentacd7c21541110d7ae6b9e63647391f65946e5c5d (diff)
mesa: Set the base format of GL_ALPHA FBOs and teach swrast about it.
Fixes assertion failures in fbo-alpha with a debug build of Mesa. Bug #29781.
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/main/fbobject.c6
-rw-r--r--src/mesa/swrast/s_readpix.c3
-rw-r--r--src/mesa/swrast/s_span.c6
3 files changed, 12 insertions, 3 deletions
diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index defdebbdefa..72cbb09ab83 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -925,6 +925,12 @@ GLenum
_mesa_base_fbo_format(GLcontext *ctx, GLenum internalFormat)
{
switch (internalFormat) {
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ return GL_ALPHA;
case GL_RGB:
case GL_R3_G3_B2:
case GL_RGB4:
diff --git a/src/mesa/swrast/s_readpix.c b/src/mesa/swrast/s_readpix.c
index 553fd9a76d8..1de481248b1 100644
--- a/src/mesa/swrast/s_readpix.c
+++ b/src/mesa/swrast/s_readpix.c
@@ -191,7 +191,8 @@ fast_read_rgba_pixels( GLcontext *ctx,
if (!rb)
return GL_FALSE;
- ASSERT(rb->_BaseFormat == GL_RGBA || rb->_BaseFormat == GL_RGB);
+ ASSERT(rb->_BaseFormat == GL_RGBA || rb->_BaseFormat == GL_RGB ||
+ rb->_BaseFormat == GL_ALPHA);
/* clipping should have already been done */
ASSERT(x + width <= (GLint) rb->Width);
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index 8931cdec1bc..28c82990e08 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1248,7 +1248,8 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span)
4 * span->end * sizeof(GLchan));
}
- ASSERT(rb->_BaseFormat == GL_RGBA || rb->_BaseFormat == GL_RGB);
+ ASSERT(rb->_BaseFormat == GL_RGBA || rb->_BaseFormat == GL_RGB ||
+ rb->_BaseFormat == GL_ALPHA);
if (ctx->Color._LogicOpEnabled) {
_swrast_logicop_rgba_span(ctx, rb, span);
@@ -1346,7 +1347,8 @@ _swrast_read_rgba_span( GLcontext *ctx, struct gl_renderbuffer *rb,
ASSERT(rb);
ASSERT(rb->GetRow);
- ASSERT(rb->_BaseFormat == GL_RGB || rb->_BaseFormat == GL_RGBA);
+ ASSERT(rb->_BaseFormat == GL_RGB || rb->_BaseFormat == GL_RGBA ||
+ rb->_BaseFormat == GL_ALPHA);
if (rb->DataType == dstType) {
rb->GetRow(ctx, rb, length, x + skip, y,