[patch] A patch to Eterm's pixmap.c to use 24 bit MMX extensions

shade_24_mmx-2.patch (text/plain), 2.40 KB, created by Tres 'RiverRat' Melton on 2005-04-23 04:02:49 UTC

--- Eterm-0.9.3-orig/src/pixmap.c	2004-07-22 14:12:31.000000000 -0600
+++ Eterm-0.9.3/src/pixmap.c	2005-04-23 04:14:52.000000000 -0600
@@ -55,6 +55,7 @@
 /* Assembler routines */
 extern void shade_ximage_15_mmx(void *data, int bpl, int w, int h, int rm, int gm, int bm);
 extern void shade_ximage_16_mmx(void *data, int bpl, int w, int h, int rm, int gm, int bm);
+extern void shade_ximage_24_mmx(void *data, int bpl, int w, int h, int rm, int gm, int bm);
 extern void shade_ximage_32_mmx(void *data, int bpl, int w, int h, int rm, int gm, int bm);
 
 #ifdef PIXMAP_SUPPORT
@@ -1635,12 +1636,12 @@
                 int r, g, b;
 
 # ifdef WORDS_BIGENDIAN
-                r = (ptr[x + 1] * rm) >> 8;
-                g = (ptr[x + 2] * gm) >> 8;
-                b = (ptr[x + 3] * bm) >> 8;
-                ptr[x + 1] = r;
-                ptr[x + 2] = g;
-                ptr[x + 3] = b;
+                r = (ptr[x + 6] * rm) >> 8;
+                g = (ptr[x + 5] * gm) >> 8;
+                b = (ptr[x + 4] * bm) >> 8;
+                ptr[x + 6] = r;
+                ptr[x + 5] = g;
+                ptr[x + 4] = b;
 # else
                 r = (ptr[x + 2] * rm) >> 8;
                 g = (ptr[x + 1] * gm) >> 8;
@@ -1658,9 +1659,9 @@
                 int r, g, b;
 
 # ifdef WORDS_BIGENDIAN
-                r = (ptr[x + 1] * rm) >> 8;
-                g = (ptr[x + 2] * gm) >> 8;
-                b = (ptr[x + 3] * bm) >> 8;
+                r = (ptr[x + 6] * rm) >> 8;
+                g = (ptr[x + 5] * gm) >> 8;
+                b = (ptr[x + 4] * bm) >> 8;
 # else
                 r = (ptr[x + 2] * rm) >> 8;
                 g = (ptr[x + 1] * gm) >> 8;
@@ -1670,9 +1671,9 @@
                 g |= (!(g >> 8) - 1);
                 b |= (!(b >> 8) - 1);
 # ifdef WORDS_BIGENDIAN
-                ptr[x + 1] = r;
-                ptr[x + 2] = g;
-                ptr[x + 3] = b;
+                ptr[x + 6] = r;
+                ptr[x + 5] = g;
+                ptr[x + 4] = b;
 # else
                 ptr[x + 2] = r;
                 ptr[x + 1] = g;
@@ -1874,7 +1875,11 @@
               break;
           case 24:
               if (ximg->bits_per_pixel != 32) {
+#ifdef HAVE_MMX
+                  shade_ximage_24_mmx(ximg->data, ximg->bytes_per_line, w, h, rm, gm, bm);
+#else
                   shade_ximage_24(ximg->data, ximg->bytes_per_line, w, h, rm, gm, bm);
+#endif
               }
               /* drop */
           case 32: