piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-25 07:09:48 -06:00
Code Issues Packages Projects Releases Wiki Activity

VideoCommon: Move bounding box pixel quads rounding to shader

Browse Source 
This avoids rounding values that the game writes to the bounding box
registers, especially the default values.
This commit is contained in:
Techjar
2021-05-28 23:30:22 -04:00
parent 37d0559493
commit e4aef0a85b
3 changed files with 20 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
Source/Core/VideoCommon/PixelShaderGen.cpp
View File

@ -492,19 +492,30 @@ void UpdateBoundingBox(float2 rawpos) {{
// such that width = right - left + 1. This has been verified on hardware.
int2 pos = iround(rawpos * cefbscale + offset);
// The GC/Wii GPU rasterizes in 2x2 pixel groups, so bounding box values will be rounded to the
// extents of these groups, rather than the exact pixel.
#ifdef API_OPENGL
// Need to flip the operands for Y on OpenGL because of lower-left origin.
int2 pos_tl = int2(pos.x & ~1, pos.y | 1);
int2 pos_br = int2(pos.x | 1, pos.y & ~1);
#else
int2 pos_tl = pos & ~1;
int2 pos_br = pos | 1;
#endif
#ifdef SUPPORTS_SUBGROUP_REDUCTION
if (CAN_USE_SUBGROUP_REDUCTION) {{
int2 min_pos = IS_HELPER_INVOCATION ? int2(2147483647, 2147483647) : pos;
int2 max_pos = IS_HELPER_INVOCATION ? int2(-2147483648, -2147483648) : pos;
int2 min_pos = IS_HELPER_INVOCATION ? int2(2147483647, 2147483647) : pos_tl;
int2 max_pos = IS_HELPER_INVOCATION ? int2(-2147483648, -2147483648) : pos_br;
SUBGROUP_MIN(min_pos);
SUBGROUP_MAX(max_pos);
if (IS_FIRST_ACTIVE_INVOCATION)
UpdateBoundingBoxBuffer(min_pos, max_pos);
}} else {{
UpdateBoundingBoxBuffer(pos, pos);
UpdateBoundingBoxBuffer(pos_tl, pos_br);
}}
#else
UpdateBoundingBoxBuffer(pos, pos);
UpdateBoundingBoxBuffer(pos_tl, pos_br);
#endif
}}