bring over Michel Daenzer's DRI changes

2 files changed, 98 insertions, 33 deletions

diff --git a/src/mesa/main/macros.h b/src/mesa/main/macros.h
index bb83b30d5d..9444975ab1 100644
--- a/src/mesa/main/macros.h
+++ b/src/mesa/main/macros.h
@@ -1,4 +1,3 @@
-/* $Id: macros.h,v 1.25 2002/02/13 00:53:19 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -454,6 +453,19 @@ do {						\
 
 
 
+/* Byte swapping
+ */
+
+#ifdef __BIG_ENDIAN
+#include <byteswap.h>
+#define CPU_TO_LE32( x )	bswap_32( x )
+#else
+#define CPU_TO_LE32( x )	( x )
+#endif
+
+#define LE32_TO_CPU( x )	CPU_TO_LE32( x )
+
+
 /* Generic color packing macros
  */
 
@@ -480,4 +492,35 @@ do {						\
    (((a) & 0xe0) | (((b) & 0xe0) >> 3) | (((c) & 0xc0) >> 6))
 
 
+#ifdef __BIG_ENDIAN
+
+#define PACK_COLOR_8888_LE( a, b, c, d )	PACK_COLOR_8888( d, c, b, a )
+
+#define PACK_COLOR_565_LE( a, b, c )					\
+   (((a) & 0xf8) | (((b) & 0xe0) >> 5) | (((b) & 0x1c) << 11) |		\
+   (((c) & 0xf8) << 5))
+
+#define PACK_COLOR_1555_LE( a, b, c, d )				\
+   ((((b) & 0xf8) >> 1) | (((c) & 0xc0) >> 6) | (((c) & 0x38) << 10) |	\
+    (((d) & 0xf8) << 5) | ((a) ? 0x80 : 0))
+
+#define PACK_COLOR_4444_LE( a, b, c, d )	PACK_COLOR_4444( c, d, a, b )
+
+#define PACK_COLOR_88_LE( a, b )		PACK_COLOR_88( b, a )
+
+#else	/* little endian */
+
+#define PACK_COLOR_8888_LE( a, b, c, d )	PACK_COLOR_8888( a, b, c, d )
+
+#define PACK_COLOR_565_LE( a, b, c )		PACK_COLOR_565( a, b, c )
+
+#define PACK_COLOR_1555_LE( a, b, c, d )	PACK_COLOR_1555( a, b, c, d )
+
+#define PACK_COLOR_4444_LE( a, b, c, d )	PACK_COLOR_4444( a, b, c, d )
+
+#define PACK_COLOR_88_LE( a, b )		PACK_COLOR_88( a, b )
+
+#endif	/* endianness */
+
+
 #endif
diff --git a/src/mesa/main/texutil.c b/src/mesa/main/texutil.c
index 8a7483128c..d840747a04 100644
--- a/src/mesa/main/texutil.c
+++ b/src/mesa/main/texutil.c
@@ -1,4 +1,4 @@
-/* $Id: texutil.c,v 1.27 2002/03/15 18:05:49 brianp Exp $ */
+/* $Id: texutil.c,v 1.28 2002/06/03 16:06:34 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -44,6 +44,13 @@
 #define DEBUG_TEXUTIL 0
 
 
+#ifdef __BIG_ENDIAN
+#define APPEND16( a, b )	( (a) << 16 | (b) )
+#else
+#define APPEND16( a, b )	( (a) | (b) << 16 )
+#endif
+
+
 struct gl_texture_convert {
    GLint xoffset, yoffset, zoffset;	/* Subimage offset */
    GLint width, height, depth;		/* Subimage region */
@@ -75,7 +82,7 @@ typedef GLboolean (*convert_func)( struct gl_texture_convert *convert );
 #define DST_TEXELS_PER_DWORD	1
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_8888( src[3], src[2], src[1], src[0] )
+	dst = PACK_COLOR_8888_LE( src[3], src[2], src[1], src[0] )
 
 #define CONVERT_DIRECT
 
@@ -87,7 +94,7 @@ typedef GLboolean (*convert_func)( struct gl_texture_convert *convert );
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_8888( src[0], src[1], src[2], src[3] )
+	dst = PACK_COLOR_8888_LE( src[0], src[1], src[2], src[3] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )		CONVERT_TEXEL( dst, src )
 
@@ -99,7 +106,7 @@ typedef GLboolean (*convert_func)( struct gl_texture_convert *convert );
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_8888( src[0], src[1], src[2], 0xff )
+	dst = PACK_COLOR_8888_LE( src[0], src[1], src[2], 0xff )
 
 #define CONVERT_TEXEL_DWORD( dst, src )		CONVERT_TEXEL( dst, src )
 
@@ -154,7 +161,7 @@ CONVERT_RGBA8888( texsubimage3d )
 #define DST_TEXELS_PER_DWORD	1
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_8888( src[3], src[2], src[1], src[0] )
+	dst = PACK_COLOR_8888_LE( src[3], src[2], src[1], src[0] )
 
 #define CONVERT_DIRECT
 
@@ -166,7 +173,7 @@ CONVERT_RGBA8888( texsubimage3d )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_8888( src[3], src[0], src[1], src[2] )
+	dst = PACK_COLOR_8888_LE( src[3], src[0], src[1], src[2] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )		CONVERT_TEXEL( dst, src )
 
@@ -178,7 +185,7 @@ CONVERT_RGBA8888( texsubimage3d )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_8888( 0xff, src[0], src[1], src[2] )
+	dst = PACK_COLOR_8888_LE( 0xff, src[0], src[1], src[2] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )		CONVERT_TEXEL( dst, src )
 
@@ -254,7 +261,7 @@ convert_texsubimage3d_rgb888( struct gl_texture_convert *convert )
 #define DST_TEXELS_PER_DWORD	2
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_565( src[0], src[1], src[2] )
+	dst = PACK_COLOR_565_LE( src[0], src[1], src[2] )
 
 #define CONVERT_DIRECT
 
@@ -266,11 +273,11 @@ convert_texsubimage3d_rgb888( struct gl_texture_convert *convert )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_565( src[0], src[1], src[2] )
+	dst = PACK_COLOR_565_LE( src[0], src[1], src[2] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )					\
-	dst = ((PACK_COLOR_565( src[0], src[1], src[2] )) |		\
-	       (PACK_COLOR_565( src[3], src[4], src[5] ) << 16))
+	dst = APPEND16( PACK_COLOR_565_LE( src[0], src[1], src[2] ),	\
+			PACK_COLOR_565_LE( src[3], src[4], src[5] ) )
 
 #define SRC_TEXEL_BYTES		3
 
@@ -280,11 +287,11 @@ convert_texsubimage3d_rgb888( struct gl_texture_convert *convert )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_565( src[0], src[1], src[2] )
+	dst = PACK_COLOR_565_LE( src[0], src[1], src[2] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )					\
-	dst = ((PACK_COLOR_565( src[0], src[1], src[2] )) |		\
-	       (PACK_COLOR_565( src[4], src[5], src[6] ) << 16))
+	dst = APPEND16( PACK_COLOR_565_LE( src[0], src[1], src[2] ),	\
+			PACK_COLOR_565_LE( src[4], src[5], src[6] ) )
 
 #define SRC_TEXEL_BYTES		4
 
@@ -336,7 +343,7 @@ CONVERT_RGB565( texsubimage3d )
 #define DST_TEXELS_PER_DWORD	2
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_4444( src[3], src[0], src[1], src[2] )
+	dst = PACK_COLOR_4444_LE( src[3], src[0], src[1], src[2] )
 
 #define CONVERT_DIRECT
 
@@ -348,11 +355,11 @@ CONVERT_RGB565( texsubimage3d )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_4444( src[3], src[0], src[1], src[2] )
+	dst = PACK_COLOR_4444_LE( src[3], src[0], src[1], src[2] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )					\
-	dst = ((PACK_COLOR_4444( src[3], src[0], src[1], src[2] )) |	\
-	       (PACK_COLOR_4444( src[7], src[4], src[5], src[6] ) << 16))
+	dst = APPEND16( PACK_COLOR_4444_LE( src[3], src[0], src[1], src[2] ),	\
+			PACK_COLOR_4444_LE( src[7], src[4], src[5], src[6] ) )
 
 #define SRC_TEXEL_BYTES		4
 
@@ -399,7 +406,7 @@ CONVERT_ARGB4444( texsubimage3d )
 #define DST_TEXELS_PER_DWORD	2
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_1555( src[3], src[0], src[1], src[2] )
+	dst = PACK_COLOR_1555_LE( src[3], src[0], src[1], src[2] )
 
 #define CONVERT_DIRECT
 
@@ -410,6 +417,19 @@ CONVERT_ARGB4444( texsubimage3d )
 #include "texutil_tmp.h"
 
 
+#ifdef __BIG_ENDIAN
+
+#define CONVERT_TEXEL( dst, src )					\
+	{ const GLushort s = *(GLushort *)src;				\
+	  dst = (s >> 9) | ((s & 0x1ff) << 7); }
+
+#define CONVERT_TEXEL_DWORD( dst, src )					\
+	{ const GLuint s = ((fi_type *)src)->i;				\
+	  dst = (((s & 0xfe00fe00) >> 9) |				\
+		 ((s & 0x01ff01ff) << 7)); }
+
+#else
+
 #define CONVERT_TEXEL( dst, src )					\
 	{ const GLushort s = *(GLushort *)src;				\
 	  dst = (s >> 1) | ((s & 1) << 15); }
@@ -419,6 +439,8 @@ CONVERT_ARGB4444( texsubimage3d )
 	  dst = (((s & 0xfffefffe) >> 1) |				\
 		 ((s & 0x00010001) << 15)); }
 
+#endif
+
 #define SRC_TEXEL_BYTES		2
 
 #define TAG(x) x##_rgba5551_to_argb1555
@@ -427,11 +449,11 @@ CONVERT_ARGB4444( texsubimage3d )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_1555( src[3], src[0], src[1], src[2] )
+	dst = PACK_COLOR_1555_LE( src[3], src[0], src[1], src[2] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )					\
-	dst = ((PACK_COLOR_1555( src[3], src[0], src[1], src[2] )) |	\
-	       (PACK_COLOR_1555( src[7], src[4], src[5], src[6] ) << 16))
+	dst = APPEND16( PACK_COLOR_1555_LE( src[3], src[0], src[1], src[2] ),	\
+			PACK_COLOR_1555_LE( src[7], src[4], src[5], src[6] ) )
 
 #define SRC_TEXEL_BYTES		4
 
@@ -483,7 +505,7 @@ CONVERT_ARGB1555( texsubimage3d )
 #define DST_TEXELS_PER_DWORD	2
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_88( src[0], src[1] )
+	dst = PACK_COLOR_88_LE( src[0], src[1] )
 
 #define CONVERT_DIRECT
 
@@ -495,11 +517,11 @@ CONVERT_ARGB1555( texsubimage3d )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_88( src[0], 0x00 )
+	dst = PACK_COLOR_88_LE( src[0], 0x00 )
 
 #define CONVERT_TEXEL_DWORD( dst, src )					\
-	dst = ((PACK_COLOR_88( src[0], 0x00 )) |			\
-	       (PACK_COLOR_88( src[1], 0x00 ) << 16))
+	dst = APPEND16( PACK_COLOR_88_LE( src[0], 0x00 ),			\
+			PACK_COLOR_88_LE( src[1], 0x00 ) )
 
 #define SRC_TEXEL_BYTES		1
 
@@ -509,11 +531,11 @@ CONVERT_ARGB1555( texsubimage3d )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_88( 0xff, src[0] )
+	dst = PACK_COLOR_88_LE( 0xff, src[0] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )					\
-	dst = ((PACK_COLOR_88( 0xff, src[0] )) |			\
-	       (PACK_COLOR_88( 0xff, src[1] ) << 16))
+	dst = APPEND16( PACK_COLOR_88_LE( 0xff, src[0] ),			\
+			PACK_COLOR_88_LE( 0xff, src[1] ) )
 
 #define SRC_TEXEL_BYTES		1
 
@@ -523,11 +545,11 @@ CONVERT_ARGB1555( texsubimage3d )
 
 
 #define CONVERT_TEXEL( dst, src )					\
-	dst = PACK_COLOR_88( src[3], src[0] )
+	dst = PACK_COLOR_88_LE( src[3], src[0] )
 
 #define CONVERT_TEXEL_DWORD( dst, src )					\
-	dst = ((PACK_COLOR_88( src[3], src[0] )) |			\
-	       (PACK_COLOR_88( src[7], src[4] ) << 16))
+	dst = APPEND16( PACK_COLOR_88_LE( src[3], src[0] ),		\
+			PACK_COLOR_88_LE( src[7], src[4] ) )
 
 #define SRC_TEXEL_BYTES		4