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-rw-r--r--src/mesa/drivers/common/meta.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index c62927c5da7..69b06ed8e53 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -704,9 +704,14 @@ _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);
+
+ /* glOrtho with width = 0 or height = 0 generates GL_INVALID_VALUE.
+ * This can occur when there is no draw buffer.
+ */
+ if (ctx->DrawBuffer->Width != 0 && ctx->DrawBuffer->Height != 0)
+ _mesa_Ortho(0.0, ctx->DrawBuffer->Width,
+ 0.0, ctx->DrawBuffer->Height,
+ -1.0, 1.0);
}
if (state & MESA_META_CLIP) {