Usermode/AxWin3 - SDL Edition of the WM, runs but no output

[tpg/acess2.git] / Usermode / Applications / axwin3_src / WM / video_SDL.c

diff --git a/Usermode/Applications/axwin3_src/WM/video_SDL.c b/Usermode/Applications/axwin3_src/WM/video_SDL.c
new file mode 100644 (file)
index 0000000..d723dca
--- /dev/null
+++ b/Usermode/Applications/axwin3_src/WM/video_SDL.c
@@ -0,0 +1,88 @@
+/*
+ * Acess2 GUI (AxWin3) WM
+ * - By John Hodge (thePowersGang)
+ *
+ * video_SDL.c
+ * - SDL build video output
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <SDL/SDL.h>
+
+// === GLOBALS ===
+SDL_Surface    *gScreen;
+ int   giScreenWidth = 1280;
+ int   giScreenHeight = 720;
+
+// === CODE ===
+void Video_Setup(void)
+{
+       gScreen = SDL_SetVideoMode(giScreenWidth, giScreenHeight, 32, SDL_SWSURFACE);
+       if( !gScreen ) {
+               fprintf(stderr, "Unable to set %ix%i video mode: %s\n",
+                       giScreenWidth, giScreenHeight,
+                       SDL_GetError());
+               exit(1);
+       }
+       SDL_WM_SetCaption("Acess2 GUI v3", "AxWin3");
+}
+
+void Video_Update(void)
+{
+       SDL_Flip(gScreen);
+}
+
+void Video_FillRect(int X, int Y, int W, int H, uint32_t Colour)
+{
+       SDL_Rect        r = {.x = X, .y = Y, .w = W, .h = H};
+       SDL_FillRect(gScreen, &r, Colour);
+}
+
+void Video_Blit(uint32_t *Source, short DstX, short DstY, short W, short H)
+{
+       printf("Blit (%p, (%i,%i) %ix%i)\n",
+               Source, DstX, DstY, W, H);
+       SDL_Rect        r = {.x = DstX, .y = DstY, .w = W, .h = H};
+       SDL_Surface     *tmps = SDL_CreateRGBSurfaceFrom(
+               Source, W, H, 32, W*4,
+               0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000);
+       SDL_BlitSurface(tmps, NULL, gScreen, &r);
+}
+
+uint32_t Video_AlphaBlend(uint32_t _orig, uint32_t _new, uint8_t _alpha)
+{
+       uint16_t        ao,ro,go,bo;
+       uint16_t        an,rn,gn,bn;
+       if( _alpha == 0 )       return _orig;
+       if( _alpha == 255 )     return _new;
+       
+       ao = (_orig >> 24) & 0xFF;
+       ro = (_orig >> 16) & 0xFF;
+       go = (_orig >>  8) & 0xFF;
+       bo = (_orig >>  0) & 0xFF;
+       
+       an = (_new >> 24) & 0xFF;
+       rn = (_new >> 16) & 0xFF;
+       gn = (_new >>  8) & 0xFF;
+       bn = (_new >>  0) & 0xFF;
+
+       if( _alpha == 0x80 ) {
+               ao = (ao + an) / 2;
+               ro = (ro + rn) / 2;
+               go = (go + gn) / 2;
+               bo = (bo + bn) / 2;
+       }
+       else {
+               ao = ao*(255-_alpha) + an*_alpha;
+               ro = ro*(255-_alpha) + rn*_alpha;
+               go = go*(255-_alpha) + gn*_alpha;
+               bo = bo*(255-_alpha) + bn*_alpha;
+               ao /= 255*2;
+               ro /= 255*2;
+               go /= 255*2;
+               bo /= 255*2;
+       }
+
+       return (ao << 24) | (ro << 16) | (go << 8) | bo;
+}
+