ppsspp/GPU/Software/RasterizerRectangle.h
2022-02-12 12:03:55 -08:00

27 lines
1.4 KiB
C++

#pragma once
#include "TransformUnit.h" // for VertexData
// Contains fast-paths for rectangles. Mainly for use in DarkStalkers which requires software
// rendering to work correctly, but will benefit other games as well.
// It also handles a bypass for DarkStalkers to avoid first stretching the image to 480x272.
// This greatly improves image quality and speeds things up a lot. Not happy about the grossness
// of the hack but it's just a huge waste of CPU and image quality not to do it.
// The long term goal is to get rid of the specializations by jitting, but it still makes
// sense to specifically detect rectangles that do 1:1 texture mapping (like a sprite), because
// the JIT will then be able to eliminate UV interpolation.
class BinManager;
struct BinCoords;
namespace Rasterizer {
// Returns true if the normal path should be skipped.
bool RectangleFastPath(const VertexData &v0, const VertexData &v1, BinManager &binner);
void DrawSprite(const VertexData &v0, const VertexData &v1, const BinCoords &range, const RasterizerState &state);
bool DetectRectangleFromStrip(const RasterizerState &state, const VertexData data[4], int *tlIndex, int *brIndex);
bool DetectRectangleFromFan(const RasterizerState &state, const VertexData *data, int c, int *tlIndex, int *brIndex);
bool DetectRectangleThroughModeSlices(const RasterizerState &state, const VertexData data[4]);
}