intel: Drop doubly irrelevant code in intelReadBuffers.

First, FBO read/draw == NULL validation happens in mesa core not
intelReadBuffers -> intel_draw_buffers.  Second, that condition is no
longer tested for in our driver since ARB_ES2_compatibility was added.

Reviewed-by: Brian Paul <brianp@vmware.com>

diff --git a/src/mesa/drivers/dri/intel/intel_buffers.c b/src/mesa/drivers/dri/intel/intel_buffers.c
index a0fa091..7eb50ed 100644 (file)
--- a/src/mesa/drivers/dri/intel/intel_buffers.c
+++ b/src/mesa/drivers/dri/intel/intel_buffers.c
@@ -308,18 +308,6 @@ intelReadBuffer(struct gl_context * ctx, GLenum mode)
       if (!was_front_buffer_reading && intel->is_front_buffer_reading)
         dri2InvalidateDrawable(intel->driContext->driReadablePriv);
    }
-
-   if (ctx->ReadBuffer == ctx->DrawBuffer) {
-      /* This will update FBO completeness status.
-       * A framebuffer will be incomplete if the GL_READ_BUFFER setting
-       * refers to a missing renderbuffer.  Calling glReadBuffer can set
-       * that straight and can make the drawing buffer complete.
-       */
-      intel_draw_buffer(ctx, ctx->DrawBuffer);
-   }
-   /* Generally, functions which read pixels (glReadPixels, glCopyPixels, etc)
-    * reference ctx->ReadBuffer and do appropriate state checks.
-    */
 }