check if ctx->Driver.GetBufferSize==NULL and no-op
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index f6f9e90..e0630c3 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1629,11 +1629,12 @@
initialize_framebuffer_size(GLcontext *ctx, GLframebuffer *fb)
{
GLuint width, height;
- ASSERT(ctx->Driver.GetBufferSize);
- ctx->Driver.GetBufferSize(fb, &width, &height);
- if (ctx->Driver.ResizeBuffers)
- ctx->Driver.ResizeBuffers(ctx, fb, width, height);
- fb->Initialized = GL_TRUE;
+ if (ctx->Driver.GetBufferSize) {
+ ctx->Driver.GetBufferSize(fb, &width, &height);
+ if (ctx->Driver.ResizeBuffers)
+ ctx->Driver.ResizeBuffers(ctx, fb, width, height);
+ fb->Initialized = GL_TRUE;
+ }
}