radeon: get rid of z24s8 <-> s8z24 conversions in span code

Can just use s8z24 everywhere.
Note: the WRITE_DEPTH macro for R600 may need to be fixed.

diff --git a/src/mesa/drivers/dri/radeon/radeon_span.c b/src/mesa/drivers/dri/radeon/radeon_span.c
index 4b47e75..9cdcde1 100644 (file)
--- a/src/mesa/drivers/dri/radeon/radeon_span.c
+++ b/src/mesa/drivers/dri/radeon/radeon_span.c
@@ -334,22 +334,6 @@ static GLubyte *radeon_ptr_2byte_8x2(const struct radeon_renderbuffer * rrb,
 
 #endif
 
-#ifndef RADEON_R300
-#ifndef RADEON_R600
-static uint32_t
-z24s8_to_s8z24(uint32_t val)
-{
-   return (val << 24) | (val >> 8);
-}
-
-static uint32_t
-s8z24_to_z24s8(uint32_t val)
-{
-   return (val >> 24) | (val << 8);
-}
-#endif
-#endif
-
 /*
  * Note that all information needed to access pixels in a renderbuffer
  * should be obtained through the gl_renderbuffer parameter, not per-context
@@ -631,15 +615,13 @@ do {                                                                      \
 #define WRITE_DEPTH( _x, _y, d )                                       \
 do {                                                                   \
    GLuint *_ptr = (GLuint*)r200_depth_4byte( rrb, _x + x_off, _y + y_off );            \
-   GLuint tmp = z24s8_to_s8z24(d);                                     \
-   *_ptr = tmp;                                                                \
+   *_ptr = d;                                                          \
 } while (0)
 #else
 #define WRITE_DEPTH( _x, _y, d )                                       \
 do {                                                                   \
    GLuint *_ptr = (GLuint*)radeon_ptr_4byte( rrb, _x + x_off, _y + y_off );    \
-   GLuint tmp = z24s8_to_s8z24(d);                                     \
-   *_ptr = tmp;                                        \
+   *_ptr = d;                                  \
 } while (0)
 #endif
 
@@ -657,15 +639,15 @@ do {                                                                      \
 #elif defined(RADEON_R200)
 #define READ_DEPTH( d, _x, _y )                                                \
   do { \
-    d = s8z24_to_z24s8(*(GLuint*)(r200_depth_4byte(rrb, _x + x_off, _y + y_off)));     \
+    d = *(GLuint*)(r200_depth_4byte(rrb, _x + x_off, _y + y_off));     \
   }while(0)
 #else
 #define READ_DEPTH( d, _x, _y )        do {                                    \
-    d = s8z24_to_z24s8(*(GLuint*)(radeon_ptr_4byte(rrb, _x + x_off,    _y + y_off ))); \
+    d = *(GLuint*)(radeon_ptr_4byte(rrb, _x + x_off,   _y + y_off )); \
   } while (0)
 #endif
 
-#define TAG(x) radeon##x##_z24_s8
+#define TAG(x) radeon##x##_s8_z24
 #include "depthtmp.h"
 
 /* ================================================================
@@ -742,7 +724,7 @@ do {                                                                        \
 } while (0)
 #endif
 
-#define TAG(x) radeon##x##_z24_s8
+#define TAG(x) radeon##x##_s8_z24
 #include "stenciltmp.h"
 
 
@@ -879,9 +861,9 @@ static void radeonSetSpanFunctions(struct radeon_renderbuffer *rrb)
        } else if (rrb->base.Format == GL_DEPTH_COMPONENT32) { /* XXX */
                radeonInitDepthPointers_z24(&rrb->base);
        } else if (rrb->base.Format == MESA_FORMAT_S8_Z24) {
-               radeonInitDepthPointers_z24_s8(&rrb->base);
+               radeonInitDepthPointers_s8_z24(&rrb->base);
        } else if (rrb->base.Format == MESA_FORMAT_S8) {
-               radeonInitStencilPointers_z24_s8(&rrb->base);
+               radeonInitStencilPointers_s8_z24(&rrb->base);
        } else {
                fprintf(stderr, "radeonSetSpanFunctions: bad format: 0x%04X\n", rrb->base.Format);
        }