From b9aa3966c00b4bb3ff0292dc28ed53ad26cf284b Mon Sep 17 00:00:00 2001 From: gdkchan Date: Sun, 8 Apr 2018 16:17:35 -0300 Subject: Merge shader branch, adding support for GLSL decompilation, a macro interpreter, and a rewrite of the GPU code. --- Ryujinx.Graphics/Gpu/BlockLinearSwizzle.cs | 57 ++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Ryujinx.Graphics/Gpu/BlockLinearSwizzle.cs (limited to 'Ryujinx.Graphics/Gpu/BlockLinearSwizzle.cs') diff --git a/Ryujinx.Graphics/Gpu/BlockLinearSwizzle.cs b/Ryujinx.Graphics/Gpu/BlockLinearSwizzle.cs new file mode 100644 index 00000000..d2cbb144 --- /dev/null +++ b/Ryujinx.Graphics/Gpu/BlockLinearSwizzle.cs @@ -0,0 +1,57 @@ +namespace Ryujinx.Graphics.Gpu +{ + class BlockLinearSwizzle : ISwizzle + { + private int BhShift; + private int BppShift; + private int BhMask; + + private int XShift; + private int GobStride; + + public BlockLinearSwizzle(int Width, int Bpp, int BlockHeight = 16) + { + BhMask = (BlockHeight * 8) - 1; + + BhShift = CountLsbZeros(BlockHeight * 8); + BppShift = CountLsbZeros(Bpp); + + int WidthInGobs = Width * Bpp / 64; + + GobStride = 512 * BlockHeight * WidthInGobs; + + XShift = CountLsbZeros(512 * BlockHeight); + } + + private int CountLsbZeros(int Value) + { + int Count = 0; + + while (((Value >> Count) & 1) == 0) + { + Count++; + } + + return Count; + } + + public int GetSwizzleOffset(int X, int Y) + { + X <<= BppShift; + + int Position = (Y >> BhShift) * GobStride; + + Position += (X >> 6) << XShift; + + Position += ((Y & BhMask) >> 3) << 9; + + Position += ((X & 0x3f) >> 5) << 8; + Position += ((Y & 0x07) >> 1) << 6; + Position += ((X & 0x1f) >> 4) << 5; + Position += ((Y & 0x01) >> 0) << 4; + Position += ((X & 0x0f) >> 0) << 0; + + return Position; + } + } +} \ No newline at end of file -- cgit v1.2.3