main: Fake entry point for glClearNamedFramebufferiv.

Mesa's ClearBuffer framework is very complicated and thoroughly married to the
object binding model.  Moreover, the OpenGL spec for ClearBuffer is also very
complicated.  At some point, we should implement buffer clearing for arbitrary
framebuffer objects, but for now, we will just wrap ClearBuffer.

Reviewed-by: Fredrik Höglund <[email protected]>
Signed-off-by: Fredrik Höglund <[email protected]>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/mesa/main/clear.c b/src/mesa/main/clear.c
index 8d707bc34a1..4e029cf258f 100644
--- a/src/mesa/main/clear.c
+++ b/src/mesa/main/clear.c
@@ -34,6 +34,8 @@
 #include "clear.h"
 #include "context.h"
 #include "enums.h"
+#include "fbobject.h"
+#include "get.h"
 #include "macros.h"
 #include "mtypes.h"
 #include "state.h"
@@ -400,6 +402,24 @@ _mesa_ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint *value)
 
 
 /**
+ * The ClearBuffer framework is so complicated and so riddled with the
+ * assumption that the framebuffer is bound that, for now, we will just fake
+ * direct state access clearing for the user.
+ */
+void GLAPIENTRY
+_mesa_ClearNamedFramebufferiv(GLuint framebuffer, GLenum buffer,
+                              GLint drawbuffer, const GLint *value)
+{
+   GLint oldfb;
+
+   _mesa_GetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &oldfb);
+   _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer);
+   _mesa_ClearBufferiv(buffer, drawbuffer, value);
+   _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, (GLuint) oldfb);
+}
+
+
+/**
  * New in GL 3.0
  * Clear unsigned integer color buffer (not depth, not stencil).
  */