Fixes flickering render issue.

Resolves: #92

Author: LiquidityC

src/gui_util.c

@@ -41,6 +41,7 @@ render_frame_on_texture(Uint32 width,
 			     cam->renderer);
 
 	SDL_SetRenderTarget(cam->renderer, texture->texture);
+	SDL_SetRenderDrawColor(cam->renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
 	SDL_RenderClear(cam->renderer);
 
 	SDL_Rect frame_top_left		= CLIP16(offset.x, offset.y);

src/main.c

@@ -1021,7 +1021,7 @@ render_game(void)
 static void
 run_game_render(void)
 {
-	SDL_SetRenderDrawColor(gRenderer, 0, 0, 0, 0);
+	SDL_SetRenderDrawColor(gRenderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
 	SDL_RenderClear(gRenderer);
 
 	render_game();
@@ -1090,7 +1090,7 @@ run_game(void)
 	run_game_update();
 
 	if (gameCompleted()) {
-		SDL_SetRenderDrawColor(gRenderer, 0, 0, 0, 255);
+		SDL_SetRenderDrawColor(gRenderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
 		SDL_RenderClear(gRenderer);
 		render_game_completed();
 		render_gui();
@@ -1189,7 +1189,7 @@ run_menu(void)
 
 	menu_update(get_active_menu(), &input, gCamera);
 
-	SDL_SetRenderDrawColor(gRenderer, 0, 0, 0, 0);
+	SDL_SetRenderDrawColor(gRenderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
 	SDL_RenderClear(gRenderer);
 	if (gGameState != CHARACTER_MENU)  {
 		SDL_SetRenderViewport(gRenderer, &menuViewport);

src/roommatrix.c

@@ -271,7 +271,7 @@ roommatrix_build_lightmap(RoomMatrix *matrix, Camera *camera)
 
 	/* Render spaces light value to lightmap texture */
 	SDL_SetRenderTarget(camera->renderer, matrix->lightmap->texture);
-	SDL_SetRenderDrawColor(camera->renderer, 0, 0, 0, 0);
+	SDL_SetRenderDrawColor(camera->renderer, 0, 0, 0, SDL_ALPHA_TRANSPARENT);
 	SDL_RenderClear(camera->renderer);
 	for (i = 0; i < MAP_ROOM_WIDTH; ++i) {
 		for (j = 0; j < MAP_ROOM_HEIGHT; ++j) {
@@ -280,7 +280,6 @@ roommatrix_build_lightmap(RoomMatrix *matrix, Camera *camera)
 			SDL_RenderPoint(camera->renderer, (float) i, (float) j);
 		}
 	}
-	SDL_RenderPresent(camera->renderer);
 	SDL_SetRenderTarget(camera->renderer, NULL);
 }
 
@@ -306,7 +305,6 @@ roommatrix_render_lightmap(RoomMatrix *matrix, Camera *cam)
 	SDL_Rect dst_rect = { 0, 0, GAME_VIEW_WIDTH, GAME_VIEW_HEIGHT };
 
 	texture_render_clip(matrix->lightmap, &dst_rect, &src_rect, cam);
-	texture_render(matrix->lightmap, &src_rect, cam);
 }
 
 RoomSpace*

src/skillbar.c

@@ -142,6 +142,7 @@ create_frame_sprite(Camera *cam)
 			     cam->renderer);
 
 	SDL_SetRenderTarget(cam->renderer, texture->texture);
+	SDL_SetRenderDrawColor(cam->renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
 	SDL_RenderClear(cam->renderer);
 
 	Texture *t = texturecache_get("GUI/GUI0.png");