fabi/Xenia-Canary
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[D3D12] Use udiv by constant tile size + minor transfer cleanup

Browse Source 
Drivers compile that to a multiplication and a shift anyway.
This commit is contained in:
Triang3l
2022-06-20 22:39:30 +03:00
parent 207e11c8d2
commit e2f632f8fa
5 changed files with 125 additions and 366 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/xenia/gpu/draw_util.h
View File

@@ -226,20 +226,6 @@ void GetScissor(const RegisterFile& regs, Scissor& scissor_out,
uint32_t GetNormalizedColorMask(const RegisterFile& regs,
uint32_t pixel_shader_writes_color_targets);
// Scales, and shift amounts of the upper 32 bits of the 32x32=64-bit
// multiplication result, for fast division and multiplication by
// EDRAM-tile-related amounts.
constexpr uint32_t kDivideScale3 = 0xAAAAAAABu;
constexpr uint32_t kDivideUpperShift3 = 1;
constexpr uint32_t kDivideScale5 = 0xCCCCCCCDu;
constexpr uint32_t kDivideUpperShift5 = 2;
constexpr uint32_t kDivideScale15 = 0x88888889u;
constexpr uint32_t kDivideUpperShift15 = 3;
void GetEdramTileWidthDivideScaleAndUpperShift(
uint32_t draw_resolution_scale_x, uint32_t& divide_scale_out,
uint32_t& divide_upper_shift_out);
// Never an identity conversion - can always write conditional move instructions
// to shaders that will be no-ops for conversion from guest to host samples.
// While we don't know the exact guest sample pattern, due to the way