backport builds

[dosdemo] / src / gfxutil.c

diff --git a/src/gfxutil.c b/src/gfxutil.c
index 259b56d..d410766 100644 (file)
--- a/src/gfxutil.c
+++ b/src/gfxutil.c
@@ -1,6 +1,6 @@
 #include <string.h>
-#include "gfxutil.h"
 #include "demo.h"
+#include "gfxutil.h"
 
 enum {
        IN              = 0,
@@ -147,34 +147,58 @@ void draw_line(int x0, int y0, int x1, int y1, unsigned short color)
 
 #define BLUR(w, h, pstep, sstep) \
        for(i=0; i<h; i++) { \
-               int sum = sptr[0] * (rad + 1); \
+               int r, g, b; \
+               int rsum = UNPACK_R16(sptr[0]) * (rad + 1); \
+               int gsum = UNPACK_G16(sptr[0]) * (rad + 1); \
+               int bsum = UNPACK_B16(sptr[0]) * (rad + 1); \
                int count = (rad * 2 + 1) << 8; \
                int midsize = w - rad * 2; \
-               int firstpix = sptr[0]; \
-               int lastpix = sptr[pstep * (w - 1)]; \
+               int rfirstpix = UNPACK_R16(sptr[0]); \
+               int rlastpix = UNPACK_R16(sptr[pstep * (w - 1)]); \
+               int gfirstpix = UNPACK_G16(sptr[0]); \
+               int glastpix = UNPACK_G16(sptr[pstep * (w - 1)]); \
+               int bfirstpix = UNPACK_B16(sptr[0]); \
+               int blastpix = UNPACK_B16(sptr[pstep * (w - 1)]); \
                /* add up the contributions for the -1 pixel */ \
                for(j=0; j<rad; j++) { \
-                       sum += sptr[pstep * j]; \
+                       rsum += UNPACK_R16(sptr[pstep * j]); \
+                       gsum += UNPACK_G16(sptr[pstep * j]); \
+                       bsum += UNPACK_B16(sptr[pstep * j]); \
                } \
                /* first part adding sptr[rad] and subtracting sptr[0] */ \
                for(j=0; j<=rad; j++) { \
-                       sum += (int)sptr[pstep * rad] - firstpix; \
+                       rsum += UNPACK_R16((int)sptr[pstep * rad]) - rfirstpix; \
+                       gsum += UNPACK_G16((int)sptr[pstep * rad]) - gfirstpix; \
+                       bsum += UNPACK_B16((int)sptr[pstep * rad]) - bfirstpix; \
                        sptr += pstep; \
-                       *dptr = scale * sum / count; \
+                       r = scale * rsum / count; \
+                       g = scale * gsum / count; \
+                       b = scale * bsum / count; \
+                       *dptr = PACK_RGB16(r, g, b); \
                        dptr += pstep; \
                } \
                /* middle part adding sptr[rad] and subtracting sptr[-(rad+1)] */ \
                for(j=1; j<midsize; j++) { \
-                       sum += (int)sptr[pstep * rad] - (int)sptr[-(rad + 1) * pstep]; \
+                       rsum += UNPACK_R16((int)sptr[pstep * rad]) - UNPACK_R16((int)sptr[-(rad + 1) * pstep]); \
+                       gsum += UNPACK_G16((int)sptr[pstep * rad]) - UNPACK_G16((int)sptr[-(rad + 1) * pstep]); \
+                       bsum += UNPACK_B16((int)sptr[pstep * rad]) - UNPACK_B16((int)sptr[-(rad + 1) * pstep]); \
                        sptr += pstep; \
-                       *dptr = scale * sum / count; \
+                       r = scale * rsum / count; \
+                       g = scale * gsum / count; \
+                       b = scale * bsum / count; \
+                       *dptr = PACK_RGB16(r, g, b); \
                        dptr += pstep; \
                } \
                /* last part adding lastpix and subtracting sptr[-(rad+1)] */ \
                for(j=0; j<rad; j++) { \
-                       sum += lastpix - (int)sptr[-(rad + 1) * pstep]; \
+                       rsum += rlastpix - UNPACK_R16((int)sptr[-(rad + 1) * pstep]); \
+                       gsum += glastpix - UNPACK_G16((int)sptr[-(rad + 1) * pstep]); \
+                       bsum += blastpix - UNPACK_B16((int)sptr[-(rad + 1) * pstep]); \
                        sptr += pstep; \
-                       *dptr = scale * sum / count; \
+                       r = scale * rsum / count; \
+                       g = scale * gsum / count; \
+                       b = scale * bsum / count; \
+                       *dptr = PACK_RGB16(r, g, b); \
                        dptr += pstep; \
                } \
                sptr += sstep; \
@@ -183,23 +207,23 @@ void draw_line(int x0, int y0, int x1, int y1, unsigned short color)
 
 /* TODO bound blur rad to image size to avoid inner loop conditionals */
 /* TODO make version with pow2 (rad*2+1) to avoid div with count everywhere */
-void blur_grey_horiz(uint16_t *dest, uint16_t *src, int xsz, int ysz, int rad, int scale)
+void blur_horiz(uint16_t *dest, uint16_t *src, int xsz, int ysz, int rad, int scale)
 {
        int i, j;
-       unsigned char *dptr = (unsigned char*)dest;
-       unsigned char *sptr = (unsigned char*)src;
+       uint16_t *dptr = dest;
+       uint16_t *sptr = src;
 
-       BLUR(xsz, ysz, 2, 0);
+       BLUR(xsz, ysz, 1, 0);
 }
 
 
-void blur_grey_vert(uint16_t *dest, uint16_t *src, int xsz, int ysz, int rad, int scale)
+void blur_vert(uint16_t *dest, uint16_t *src, int xsz, int ysz, int rad, int scale)
 {
        int i, j;
-       unsigned char *dptr = (unsigned char*)dest;
-       unsigned char *sptr = (unsigned char*)src;
-       int pixel_step = xsz * 2;
-       int scanline_step = 2 - ysz * pixel_step;
+       uint16_t *dptr = dest;
+       uint16_t *sptr = src;
+       int pixel_step = xsz;
+       int scanline_step = 1 - ysz * pixel_step;
 
        BLUR(ysz, xsz, pixel_step, scanline_step);
 }
@@ -221,15 +245,26 @@ void blitfb(uint16_t *dest, uint16_t *src, int width, int height, int pitch_pix)
 {
        int i;
        for(i=0; i<height; i++) {
-               memcpy(dest, src, width * 2);
+               memcpy(dest, src, width << 1);
                dest += 320;
+       }
+}
+
+void blit(uint16_t *dest, int destwidth, uint16_t *src, int width, int height, int pitch_pix)
+{
+       int i, spansz = width << 1;
+       for(i=0; i<height; i++) {
+               memcpy(dest, src, spansz);
+               dest += destwidth;
                src += pitch_pix;
        }
 }
 
-void blitfb_key(uint16_t *dest, uint16_t *src, int width, int height, int pitch_pix, uint16_t key)
+void blit_key(uint16_t *dest, int destwidth, uint16_t *src, int width, int height, int pitch_pix, uint16_t key)
 {
-       int i, j, dadv = 320 - width;
+       int i, j;
+       int dadv = destwidth - width;
+       int sadv = pitch_pix - width;
 
        for(i=0; i<height; i++) {
                for(j=0; j<width; j++) {
@@ -238,6 +273,7 @@ void blitfb_key(uint16_t *dest, uint16_t *src, int width, int height, int pitch_
                        dest++;
                }
                dest += dadv;
+               src += sadv;
        }
 
 }