From: Eric Anholt <eric@anholt.net>
Date: Mon, 7 Nov 2011 02:08:36 +0000 (-0800)
Subject: mesa: Add fallback from RGB_FLOAT16 to RGBA_FLOAT16 before RGBA_FLOAT32.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=babe26b3efa56f1afd139d5cfecbadb857a43d8f;p=mesa.git

mesa: Add fallback from RGB_FLOAT16 to RGBA_FLOAT16 before RGBA_FLOAT32.

Not all i965 hardware can do RGB float16, and this will at least save
half the memory and have expected behavior in terms of precision.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
---

diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index aebe38ee0bf..38571b83760 100644
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -356,6 +356,7 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
 	    break;
          case GL_RGB16F_ARB:
 	    RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
+	    RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
 	    RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
 	    RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
 	    break;