From: Brian Paul <brianp@vmware.com>
Date: Mon, 27 Jun 2016 17:18:10 +0000 (-0600)
Subject: svga: set render target flag for snorm surfaces
X-Git-Tag: upstream/17.1.0~8394
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3a3c3d124aced6444cd637d21c5d723c8417b0b9;p=platform%2Fupstream%2Fmesa.git

svga: set render target flag for snorm surfaces

We don't normally support rendering to SNORM surfaces, but with
GL_ARB_copy_image we can copy to them if we treat them as typeless
and use a UNORM surface view.

Acked-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
---

diff --git a/src/gallium/drivers/svga/svga_resource_texture.c b/src/gallium/drivers/svga/svga_resource_texture.c
index 3f91c86..9e1aaab 100644
--- a/src/gallium/drivers/svga/svga_resource_texture.c
+++ b/src/gallium/drivers/svga/svga_resource_texture.c
@@ -963,6 +963,16 @@ svga_texture_create(struct pipe_screen *screen,
                       svga_format_name(typeless),
                       bindings);
       }
+
+      if (svga_format_is_uncompressed_snorm(tex->key.format)) {
+         /* We can't normally render to snorm surfaces, but once we
+          * substitute a typeless format, we can if the rendertarget view
+          * is unorm.  This can happen with GL_ARB_copy_image.
+          */
+         tex->key.flags |= SVGA3D_SURFACE_HINT_RENDERTARGET;
+         tex->key.flags |= SVGA3D_SURFACE_BIND_RENDER_TARGET;
+      }
+
       tex->key.format = typeless;
    }