glslwrite: add support for alpha channel

1 files changed, 5 insertions, 0 deletions

diff --git a/glslview.c b/glslview.c
index c9d8915..828ac3f 100644
--- a/glslview.c
+++ b/glslview.c
@@ -193,6 +193,11 @@ int main(int argc, char *argv[]) {
 
 	SDL_Init(SDL_INIT_VIDEO);
 
+	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
+	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
+	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
+	SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
+
 	SDL_Window *window = SDL_CreateWindow("glslwrite", 0, 0, 800, 800, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
 	SDL_GL_CreateContext(window);