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GPU/HW: Implement flipped quad coordinate hack from beetle-psx

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Fixes graphical glitches around the edges of flipped sprites.
This commit is contained in:
Connor McLaughlin
2020-03-28 02:24:22 +10:00
parent f23bcc0faa
commit 0b347e2151
5 changed files with 99 additions and 14 deletions
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11
src/core/gpu_hw.h
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@ -51,20 +51,22 @@ protected:
s32 y;
u32 color;
u32 texpage;
u32 texcoord; // 16-bit texcoords are needed for 256 extent rectangles
u16 u; // 16-bit texcoords are needed for 256 extent rectangles
u16 v;
ALWAYS_INLINE void Set(s32 x_, s32 y_, u32 color_, u32 texpage_, u16 packed_texcoord)
{
Set(x_, y_, color_, texpage_, packed_texcoord & 0xFF, (packed_texcoord >> 8));
}
ALWAYS_INLINE void Set(s32 x_, s32 y_, u32 color_, u32 texpage_, u16 texcoord_x, u16 texcoord_y)
ALWAYS_INLINE void Set(s32 x_, s32 y_, u32 color_, u32 texpage_, u16 u_, u16 v_)
{
x = x_;
y = y_;
color = color_;
texpage = texpage_;
texcoord = ZeroExtend32(texcoord_x) | (ZeroExtend32(texcoord_y) << 16);
u = u_;
v = v_;
}
};
@ -151,6 +153,9 @@ protected:
/// Computes the area affected by a VRAM transfer, including wrap-around of X.
Common::Rectangle<u32> GetVRAMTransferBounds(u32 x, u32 y, u32 width, u32 height);
/// Handles quads with flipped texture coordinate directions.
static void HandleFlippedQuadTextureCoordinates(BatchVertex* vertices);
HeapArray<u16, VRAM_WIDTH * VRAM_HEIGHT> m_vram_shadow;
BatchVertex* m_batch_start_vertex_ptr = nullptr;