shithub: cstory

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Wii U integer-only viewport calculation

--- a/src/Backends/Rendering/WiiU.cpp

+++ b/src/Backends/Rendering/WiiU.cpp

@@ -178,12 +178,12 @@

 static void CalculateViewport(size_t actual_screen_width, size_t actual_screen_height, Viewport *viewport)

 {

-	if ((float)actual_screen_width / (float)actual_screen_height > (float)framebuffer_surface->width / (float)framebuffer_surface->height)

+	if (actual_screen_width * framebuffer_surface->height > framebuffer_surface->width * actual_screen_height)

 	{

 		viewport->y = 0.0f;

 		viewport->height = actual_screen_height;

-		viewport->width = framebuffer_surface->width * ((float)actual_screen_height / (float)framebuffer_surface->height);

+		viewport->width = (framebuffer_surface->width * actual_screen_height) / framebuffer_surface->height;

 		viewport->x = (actual_screen_width - viewport->width) / 2;

 	}

 	else

@@ -191,7 +191,7 @@

 		viewport->x = 0.0f;

 		viewport->width = actual_screen_width;

-		viewport->height = framebuffer_surface->height * ((float)actual_screen_width / (float)framebuffer_surface->width);

+		viewport->height = (framebuffer_surface->height * actual_screen_width) / framebuffer_surface->width;

 		viewport->y = (actual_screen_height - viewport->height) / 2;

 	}

 }