mesa/formatquery: Added {COLOR,DEPTH,STENCIL}_COMPONENTS <pname> queries

Reviewed-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/mesa/main/formatquery.c b/src/mesa/main/formatquery.c
index ef2b270dd0fdd71556766a5b9e479cfbac14a224..5d7df15fd0de4b69b5d99eea5e33bfdb59f0152b 100644 (file)
--- a/src/mesa/main/formatquery.c
+++ b/src/mesa/main/formatquery.c
@@ -965,15 +965,39 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
    }
 
    case GL_COLOR_COMPONENTS:
-      /* @TODO */
+      /* The ARB_internalformat_query2 spec says:
+       *
+       *     "- COLOR_COMPONENTS: If the internal format contains any color
+       *     components (R, G, B, or A), TRUE is returned in <params>.
+       *     If the internal format is unsupported or contains no color
+       *     components, FALSE is returned."
+       */
+      if (_mesa_is_color_format(internalformat))
+         buffer[0] = GL_TRUE;
       break;
 
    case GL_DEPTH_COMPONENTS:
-      /* @TODO */
+      /* The ARB_internalformat_query2 spec says:
+       *
+       *     "- DEPTH_COMPONENTS: If the internal format contains a depth
+       *     component (D), TRUE is returned in <params>. If the internal format
+       *     is unsupported or contains no depth component, FALSE is returned."
+       */
+      if (_mesa_is_depth_format(internalformat) ||
+          _mesa_is_depthstencil_format(internalformat))
+         buffer[0] = GL_TRUE;
       break;
 
    case GL_STENCIL_COMPONENTS:
-      /* @TODO */
+      /* The ARB_internalformat_query2 spec says:
+       *
+       *     "- STENCIL_COMPONENTS: If the internal format contains a stencil
+       *     component (S), TRUE is returned in <params>. If the internal format
+       *     is unsupported or contains no stencil component, FALSE is returned.
+       */
+      if (_mesa_is_stencil_format(internalformat) ||
+          _mesa_is_depthstencil_format(internalformat))
+         buffer[0] = GL_TRUE;
       break;
 
    case GL_COLOR_RENDERABLE: