I ran across this while running a glGenerateMipmap() test.
_meta_GenerateMipmap sets MESA_META_TRANSFORM, which causes
_mesa_meta_begin to try and set a default orthographic projection.
Unfortunately, if the drawbuffer isn't set up, ctx->DrawBuffer->Width
and Height are 0, which just causes an GL_INVALID_VALUE error.
Fixes oglconform's fbo/mipmap.automatic, mipmap.manual, and
mipmap.manualIterateTexTargets.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/mesa/drivers/common/meta.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 417dbd0..7d58281 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -684,9 +684,11 @@ _mesa_meta_begin(struct gl_context *ctx, GLbitfield state)
_mesa_LoadIdentity();
_mesa_MatrixMode(GL_PROJECTION);
_mesa_LoadIdentity();
- _mesa_Ortho(0.0, ctx->DrawBuffer->Width,
- 0.0, ctx->DrawBuffer->Height,
- -1.0, 1.0);
+ if (ctx->DrawBuffer->Initialized) {
+ _mesa_Ortho(0.0, ctx->DrawBuffer->Width,
+ 0.0, ctx->DrawBuffer->Height,
+ -1.0, 1.0);
+ }
}
if (state & MESA_META_CLIP) {
--
1.8.0
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