intel: Merge check_blit_fragment_ops between i915/i965.

Both had some useful bits for the other.

src/mesa/drivers/dri/i965/Makefile

@@ -19,6 +19,7 @@ DRIVER_SOURCES = \
 	intel_regions.c \
 	intel_screen.c \
 	intel_span.c \
+	intel_pixel.c \
 	intel_pixel_copy.c \
 	intel_pixel_bitmap.c \
 	intel_state.c \

src/mesa/drivers/dri/i965/intel_pixel.c

@@ -0,0 +1 @@
+../intel/intel_pixel.c

src/mesa/drivers/dri/i965/intel_pixel_copy.c

@@ -70,34 +70,6 @@ copypix_src_region(struct intel_context *intel, GLenum type)
    return NULL;
 }
 
-
-
-
-/**
- * Check if any fragment operations are in effect which might effect
- * glDraw/CopyPixels.
- */
-GLboolean
-intel_check_blit_fragment_ops(GLcontext * ctx)
-{
-   if (ctx->NewState)
-      _mesa_update_state(ctx);
-
-   return !(ctx->_ImageTransferState ||
-	    ctx->RenderMode != GL_RENDER ||
-            ctx->Color.AlphaEnabled ||
-            ctx->Depth.Test ||
-            ctx->Fog.Enabled ||
-            ctx->Stencil.Enabled ||
-            !ctx->Color.ColorMask[0] ||
-            !ctx->Color.ColorMask[1] ||
-            !ctx->Color.ColorMask[2] ||
-            !ctx->Color.ColorMask[3] ||	/* can do this! */
-            ctx->Texture._EnabledUnits ||
-	    ctx->FragmentProgram._Enabled ||
-	    ctx->Color.BlendEnabled);
-}
-
 /* Doesn't work for overlapping regions.  Could do a double copy or
  * just fallback.
  */

src/mesa/drivers/dri/intel/intel_pixel.c

@@ -99,6 +99,11 @@ intel_check_blit_fragment_ops(GLcontext * ctx)
       return GL_FALSE;
    }
 
+   if (ctx->RenderMode != GL_RENDER) {
+      DBG("fallback due to render mode\n");
+      return GL_FALSE;
+   }
+
    return GL_TRUE;
 }
 
@@ -157,7 +162,9 @@ intelInitPixelFuncs(struct dd_function_table *functions)
    if (!getenv("INTEL_NO_BLIT")) {
       functions->Bitmap = intelBitmap;
       functions->CopyPixels = intelCopyPixels;
+#ifdef I915
       functions->ReadPixels = intelReadPixels;
       functions->DrawPixels = intelDrawPixels;
+#endif
    }
 }