Mesa (master): r300g: add RGBA16F colorbuffer support

[Marek Olšák]

Module: Mesa
Branch: master
Commit: 2ab737557258148d52d9b9e983e4b18560b7a460
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2ab737557258148d52d9b9e983e4b18560b7a460

Author: Marek Olšák <maraeo at gmail.com>
Date:   Thu Apr  1 02:21:06 2010 +0200

r300g: add RGBA16F colorbuffer support

Disabled by default due to unresolved IP issues.

---

 src/gallium/drivers/r300/r300_texture.c |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c
index d4a6409..e0dee44 100644
--- a/src/gallium/drivers/r300/r300_texture.c
+++ b/src/gallium/drivers/r300/r300_texture.c
@@ -33,6 +33,9 @@
 #include "r300_state_inlines.h"
 #include "r300_winsys.h"
 
+/* XXX Enable float textures here. */
+/*#define ENABLE_FLOAT_TEXTURES*/
+
 #define TILE_WIDTH 0
 #define TILE_HEIGHT 1
 
@@ -278,8 +281,7 @@ static uint32_t r300_translate_texformat(enum pipe_format format)
             }
             return ~0;
 
-/* XXX Enable float textures here. */
-#if 0
+#if defined(ENABLE_FLOAT_TEXTURES)
         case UTIL_FORMAT_TYPE_FLOAT:
             switch (desc->channel[0].size) {
                 case 16:
@@ -360,12 +362,13 @@ static uint32_t r300_translate_colorformat(enum pipe_format format)
         /* 64-bit buffers. */
         case PIPE_FORMAT_R16G16B16A16_UNORM:
         case PIPE_FORMAT_R16G16B16A16_SNORM:
-        //case PIPE_FORMAT_R16G16B16A16_FLOAT: /* not in pipe_format */
+#if defined(ENABLE_FLOAT_TEXTURES)
+        case PIPE_FORMAT_R16G16B16A16_FLOAT:
+#endif
             return R300_COLOR_FORMAT_ARGB16161616;
 
-/* XXX Enable float textures here. */
-#if 0
         /* 128-bit buffers. */
+#if defined(ENABLE_FLOAT_TEXTURES)
         case PIPE_FORMAT_R32G32B32A32_FLOAT:
             return R300_COLOR_FORMAT_ARGB32323232;
 #endif