Mesa (master): mesa: add red, red/green formats in _mesa_base_fbo_format()

[Brian Paul]

Module: Mesa
Branch: master
Commit: d30156525f869d11445575767298900fb6121c6a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d30156525f869d11445575767298900fb6121c6a

Author: Brian Paul <brianp at vmware.com>
Date:   Mon Jan 24 19:38:52 2011 -0700

mesa: add red, red/green formats in _mesa_base_fbo_format()

---

 src/mesa/main/fbobject.c |   12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index 17b768d..2fe8475 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -390,6 +390,8 @@ _mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
          case GL_LUMINANCE_ALPHA:
          case GL_LUMINANCE:
          case GL_INTENSITY:
+         case GL_RED:
+         case GL_RG:
             fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
             return;
          default:
@@ -1075,7 +1077,15 @@ _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
          return GL_DEPTH_STENCIL_EXT;
       else
          return 0;
-   /* XXX add floating point formats eventually */
+   case GL_RED:
+   case GL_R8:
+   case GL_R16:
+      return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
+   case GL_RG:
+   case GL_RG8:
+   case GL_RG16:
+      return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
+   /* XXX add floating point and integer formats eventually */
    default:
       return 0;
    }