Warning fixes, comments

Core/Screenshot.cpp

@@ -354,7 +354,7 @@ ScreenshotResult TakeGameScreenshot(Draw::DrawContext *draw, const Path &filenam
 			const u8 *buffer = ConvertBufferToScreenshot(buf, false, flipbuffer, width, height);
 
 			bool success;
-			if (width <= 480 * maxRes) {
+			if ((int)width <= 480 * maxRes) {
 				success = Save888RGBScreenshot(filename, fmt, buffer, width, height);
 				delete[] flipbuffer;
 			} else {
@@ -363,13 +363,12 @@ ScreenshotResult TakeGameScreenshot(Draw::DrawContext *draw, const Path &filenam
 				delete[] flipbuffer;
 
 				// TODO: Speed this thing up.
-				while (width > 480 * maxRes) {
+				while ((int)width > 480 * maxRes) {
 					u8 *halfSize = new u8[(width / 2) * (height / 2) * 3];
-					for (int y = 0; y < height / 2; y++) {
-						for (int x = 0; x < width / 2; x++) {
+					for (u32 y = 0; y < height / 2; y++) {
+						for (u32 x = 0; x < width / 2; x++) {
 							for (int c = 0; c < 3; c++) {
-								halfSize[(y * (width / 2) + x) * 3 + c] =
-									(shrinkBuffer[((y * 2) * width + (x * 2)) * 3 + c] +
+								halfSize[(y * (width / 2) + x) * 3 + c] = (shrinkBuffer[((y * 2) * width + (x * 2)) * 3 + c] +
 										shrinkBuffer[((y * 2) * width + (x * 2 + 1)) * 3 + c] +
 										shrinkBuffer[(((y * 2) + 1) * width + (x * 2)) * 3 + c] +
 										shrinkBuffer[(((y * 2) + 1) * width + (x * 2 + 1)) * 3 + c]) / 4;

GPU/Common/VertexDecoderHandwritten.cpp

@@ -31,7 +31,9 @@
 // [04000116] P: s16 C: 5551 T: u16  (12b) (7688298)
 
 // This is the first GoW one. TODO: Do two verts at a time.
+// God of War.
 void VtxDec_Tu16_C8888_Pfloat(const u8 *srcp, u8 *dstp, int count, const UVScale *uvScaleOffset) {
+	// Input: 4 + 4 + 4 + 12 = 24 bytes
 	struct GOWVTX {
 		union {
 			struct {
@@ -47,6 +49,7 @@ void VtxDec_Tu16_C8888_Pfloat(const u8 *srcp, u8 *dstp, int count, const UVScale
 		float z;
 	};
 	// NOTE: This might be different for different vertex formats.
+	// Output: 8 + 4 + 4 + 12 = 28 bytes.
 	struct OutVTX {
 		float u;
 		float v;