dri/swrast: split out common pixel macros

diff --git a/src/mesa/drivers/dri/swrast/swrast_span.c b/src/mesa/drivers/dri/swrast/swrast_span.c
index fd11f2866e8d40fd8d5d13826b5010b68d2081fd..d11d1d36aef0630770fd17f179467bdfffb837ee 100644 (file)
--- a/src/mesa/drivers/dri/swrast/swrast_span.c
+++ b/src/mesa/drivers/dri/swrast/swrast_span.c
@@ -32,52 +32,36 @@
 #define YFLIP(_xrb, Y) ((_xrb)->Base.Height - (Y) - 1)
 
 /*
- * Generate code for image span functions.
+ * Pixel macros shared across front/back buffer span functions.
  */
 
 /* 32-bit BGRA */
-#define NAME(FUNC) FUNC##_A8R8G8B8
-#define RB_TYPE GLubyte
-#define SPAN_VARS \
-   struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
-#define INIT_PIXEL_PTR(P, X, Y) \
-   GLubyte *P = (GLubyte *)xrb->Base.Data + YFLIP(xrb, Y) * xrb->pitch + (X) * 4;
-#define INC_PIXEL_PTR(P) P += 4
-#define STORE_PIXEL(DST, X, Y, VALUE) \
+#define STORE_PIXEL_A8R8G8B8(DST, X, Y, VALUE) \
    DST[3] = VALUE[ACOMP]; \
    DST[2] = VALUE[RCOMP]; \
    DST[1] = VALUE[GCOMP]; \
    DST[0] = VALUE[BCOMP]
-#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+#define STORE_PIXEL_RGB_A8R8G8B8(DST, X, Y, VALUE) \
    DST[3] = 0xff; \
    DST[2] = VALUE[RCOMP]; \
    DST[1] = VALUE[GCOMP]; \
    DST[0] = VALUE[BCOMP]
-#define FETCH_PIXEL(DST, SRC) \
+#define FETCH_PIXEL_A8R8G8B8(DST, SRC) \
    DST[ACOMP] = SRC[3]; \
    DST[RCOMP] = SRC[2]; \
    DST[GCOMP] = SRC[1]; \
    DST[BCOMP] = SRC[0]
 
-#include "swrast/s_spantemp.h"
-
 
 /* 16-bit BGR */
-#define NAME(FUNC) FUNC##_R5G6B5
-#define RB_TYPE GLubyte
-#define SPAN_VARS \
-   struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
-#define INIT_PIXEL_PTR(P, X, Y) \
-   GLubyte *P = (GLubyte *)xrb->Base.Data + YFLIP(xrb, Y) * xrb->pitch + (X) * 2;
-#define INC_PIXEL_PTR(P) P += 2
-#define STORE_PIXEL(DST, X, Y, VALUE) \
+#define STORE_PIXEL_R5G6B5(DST, X, Y, VALUE) \
    do { \
    GLushort *p = (GLushort *)DST; \
    *p = ( (((VALUE[RCOMP]) & 0xf8) << 8) | \
          (((VALUE[GCOMP]) & 0xfc) << 3) | \
          (((VALUE[BCOMP]) & 0xf8) >> 3) ); \
    } while(0)
-#define FETCH_PIXEL(DST, SRC) \
+#define FETCH_PIXEL_R5G6B5(DST, SRC) \
    do { \
    GLushort p = *(GLushort *)SRC; \
    DST[ACOMP] = 0xff; \
@@ -86,6 +70,42 @@
    DST[BCOMP] = ((p << 3) & 0xf8) * 255 / 0xf8; \
    } while(0)
 
+
+/*
+ * Generate code for image span functions.
+ */
+
+/* 32-bit BGRA */
+#define NAME(FUNC) FUNC##_A8R8G8B8
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+   struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
+#define INIT_PIXEL_PTR(P, X, Y) \
+   GLubyte *P = (GLubyte *)xrb->Base.Data + YFLIP(xrb, Y) * xrb->pitch + (X) * 4;
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+   STORE_PIXEL_A8R8G8B8(DST, X, Y, VALUE)
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+   STORE_PIXEL_RGB_A8R8G8B8(DST, X, Y, VALUE)
+#define FETCH_PIXEL(DST, SRC) \
+   FETCH_PIXEL_A8R8G8B8(DST, SRC)
+
+#include "swrast/s_spantemp.h"
+
+
+/* 16-bit BGR */
+#define NAME(FUNC) FUNC##_R5G6B5
+#define RB_TYPE GLubyte
+#define SPAN_VARS \
+   struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
+#define INIT_PIXEL_PTR(P, X, Y) \
+   GLubyte *P = (GLubyte *)xrb->Base.Data + YFLIP(xrb, Y) * xrb->pitch + (X) * 2;
+#define INC_PIXEL_PTR(P) P += 2
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+   STORE_PIXEL_R5G6B5(DST, X, Y, VALUE)
+#define FETCH_PIXEL(DST, SRC) \
+   FETCH_PIXEL_R5G6B5(DST, SRC)
+
 #include "swrast/s_spantemp.h"
 
 
@@ -119,20 +139,11 @@
    GLubyte *P = (GLubyte *)row;
 #define INC_PIXEL_PTR(P) P += 4
 #define STORE_PIXEL(DST, X, Y, VALUE) \
-   DST[3] = VALUE[ACOMP]; \
-   DST[2] = VALUE[RCOMP]; \
-   DST[1] = VALUE[GCOMP]; \
-   DST[0] = VALUE[BCOMP]
+   STORE_PIXEL_A8R8G8B8(DST, X, Y, VALUE)
 #define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
-   DST[3] = 0xff; \
-   DST[2] = VALUE[RCOMP]; \
-   DST[1] = VALUE[GCOMP]; \
-   DST[0] = VALUE[BCOMP]
+   STORE_PIXEL_RGB_A8R8G8B8(DST, X, Y, VALUE)
 #define FETCH_PIXEL(DST, SRC) \
-   DST[ACOMP] = SRC[3]; \
-   DST[RCOMP] = SRC[2]; \
-   DST[GCOMP] = SRC[1]; \
-   DST[BCOMP] = SRC[0]
+   FETCH_PIXEL_A8R8G8B8(DST, SRC)
 
 #include "swrast_spantemp.h"
 
@@ -146,20 +157,9 @@
    GLubyte *P = (GLubyte *)row;
 #define INC_PIXEL_PTR(P) P += 2
 #define STORE_PIXEL(DST, X, Y, VALUE) \
-   do { \
-   GLushort *p = (GLushort *)DST; \
-   *p = ( (((VALUE[RCOMP]) & 0xf8) << 8) | \
-         (((VALUE[GCOMP]) & 0xfc) << 3) | \
-         (((VALUE[BCOMP]) & 0xf8) >> 3) ); \
-   } while(0)
+   STORE_PIXEL_R5G6B5(DST, X, Y, VALUE)
 #define FETCH_PIXEL(DST, SRC) \
-   do { \
-   GLushort p = *(GLushort *)SRC; \
-   DST[ACOMP] = 0xff; \
-   DST[RCOMP] = ((p >> 8) & 0xf8) * 255 / 0xf8; \
-   DST[GCOMP] = ((p >> 3) & 0xfc) * 255 / 0xfc; \
-   DST[BCOMP] = ((p << 3) & 0xf8) * 255 / 0xf8; \
-   } while(0)
+   FETCH_PIXEL_R5G6B5(DST, SRC)
 
 #include "swrast_spantemp.h"