Merge pull request #466 from caiiiycuk/SDL_HWPALETTE

Implementation of SDL_Surface with SDL_HWPALETTE flag (8bpp surface)

1 files changed, 61 insertions, 0 deletions

diff --git a/tests/sdl_canvas_palette.c b/tests/sdl_canvas_palette.c
new file mode 100644
index 00000000..1ba07760
--- /dev/null
+++ b/tests/sdl_canvas_palette.c
@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <SDL/SDL.h>
+#include <emscripten.h>
+
+int main() {
+  SDL_Init(SDL_INIT_VIDEO);
+  SDL_Surface *screen = SDL_SetVideoMode(600, 400, 8, SDL_HWSURFACE | SDL_HWPALETTE);
+
+  //initialize sdl palette
+  //with red green and blue
+  //colors
+  SDL_Color pal[3];
+  pal[0].r = 255;
+  pal[0].g = 0;
+  pal[0].b = 0;
+  pal[0].unused = 0;
+
+  pal[1].r = 0;
+  pal[1].g = 255;
+  pal[1].b = 0;
+  pal[1].unused = 0;
+
+  pal[2].r = 0;
+  pal[2].g = 0;
+  pal[2].b = 255;
+  pal[2].unused = 0;
+
+  SDL_SetColors(screen, pal, 0, 3);
+
+  {
+    SDL_Rect rect = { 0, 0, 300, 200 };
+    SDL_FillRect(screen, &rect, 0);
+  }
+
+  {
+    SDL_Rect rect = { 300, 0, 300, 200 };
+    SDL_FillRect(screen, &rect, 1);
+  }
+
+  {
+    SDL_Rect rect = { 0, 200, 600, 200 };
+    SDL_FillRect(screen, &rect, 2);
+  }
+
+  //changing green color
+  //to yellow
+  pal[1].r = 255;
+  SDL_SetColors(screen, pal, 1, 1);
+
+  {
+    SDL_Rect rect = { 300, 200, 300, 200 };
+    SDL_FillRect(screen, &rect, 1);
+  }
+
+  printf("you should see red, blue and yellow rectangle\n");
+
+  SDL_Quit();
+
+  return 0;
+}
+