ppsspp

preserve-emulation/ppsspp

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Henrik RydgårdandClaude Opus 5.5 c1326c4941 SoftGPU: Draw sprites that only read their own pixels in parallel

Drawing a sprite that textures from its target in the GE's pixel order
made Burnout Dominator about 60% slower in wall time: it copies its
framebuffer onto itself in 32-pixel strips twice a frame, and those were
drawn pixel by pixel on the main thread. When each pixel reads only the
texel it writes (through mode, nearest, level 0, the target's format and
stride, texture coordinates equal to the pixel), the order can't change
what any pixel reads, so such a sprite is drawn like any other. Burnout
renders the same, within 3% of before the pixel order.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

2026-10-09 12:27:45 +02:00

BinManager.cpp

SoftGPU: Draw sprites that only read their own pixels in parallel

2026-10-09 12:27:45 +02:00

BinManager.h

SoftGPU: Draw sprites that only read their own pixels in parallel

2026-10-09 12:27:45 +02:00

Clipper.cpp

SoftGPU: Cull primitives entirely outside an x or y plane

2026-10-02 15:09:43 -06:00

Clipper.h

SoftGPU: Cull primitives entirely outside an x or y plane

2026-10-02 15:09:43 -06:00

DrawPixel.cpp

SoftGPU: Pick the span function by blend kind, and decide the vector path once

2026-10-09 10:34:39 +02:00

DrawPixel.h

SoftGPU: Pass a span's colors a channel at a time

2026-10-09 10:34:39 +02:00

DrawPixelX86.cpp

SoftGPU: Store depth in VRAM as the GE does

2026-10-08 18:35:48 +02:00

FuncId.cpp

SoftGPU: Keep a not-black color test when dithering, fog or a logic op is on

2026-10-08 18:37:32 +02:00

FuncId.h

SoftGPU: Store depth in VRAM as the GE does

2026-10-08 18:35:48 +02:00

GEMath.cpp

SoftGPU: Inline GERecip, and pick the mip level's q once per quad row

2026-10-09 10:34:39 +02:00

GEMath.h

CrossSIMD: Keep the C++ fallback's integer ops defined, like the SIMD ones

2026-10-09 11:12:48 +02:00

Lighting.cpp

SoftGPU: Add the diffuse light without branching on its factor

2026-10-09 09:07:12 +02:00

Lighting.h

SoftGPU: Keep the vertex position, normal and light vectors as Vec4F32

2026-10-09 09:07:12 +02:00

Rasterizer.cpp

SoftGPU: Let the quad sampler skip the level check when all is level 0

2026-10-09 11:39:29 +02:00

Rasterizer.h

SoftGPU: Draw sprites that texture from themselves in the GE's pixel order

2026-10-09 12:27:45 +02:00

RasterizerRectangle.cpp

SoftGPU: Draw sprites that texture from themselves in the GE's pixel order

2026-10-09 12:27:45 +02:00

RasterizerRectangle.h

SoftGPU: Keep textured rectangles as triangles unless they'd match

2026-10-02 15:09:42 -06:00

RasterizerRegCache.cpp

GPU: modernize use C++17 constexpr for precalculate compilation

2026-05-19 21:57:45 +03:00

RasterizerRegCache.h

Delete remains of support for the MIPS architecture as host

2026-02-17 10:20:51 +01:00

README.txt

Add snapshot of the whole source code.

2012-11-01 16:19:01 +01:00

Sampler.cpp

SoftGPU: Draw sprites that texture from themselves in the GE's pixel order

2026-10-09 12:27:45 +02:00

Sampler.h

SoftGPU: Draw sprites that texture from themselves in the GE's pixel order

2026-10-09 12:27:45 +02:00

SamplerX86.cpp

SoftGPU: Leave textures with an invalid level address to the generic samplers

2026-10-05 13:05:46 -06:00

SoftGpu.cpp

SoftGPU: Simulate the GE's texture cache

2026-10-09 12:27:45 +02:00

SoftGpu.h

SoftGPU: Draw clear mode, stencil and color test spans in vector lanes

2026-10-09 10:34:39 +02:00

TexCache.cpp

SoftGPU: Draw sprites that texture from themselves in the GE's pixel order

2026-10-09 12:27:45 +02:00

TexCache.h

SoftGPU: Draw sprites that texture from themselves in the GE's pixel order

2026-10-09 12:27:45 +02:00

TransformUnit.cpp

SoftGPU: Simulate the GE's texture cache

2026-10-09 12:27:45 +02:00

TransformUnit.h

SoftGPU: Simulate the GE's texture cache

2026-10-09 12:27:45 +02:00

trirast.txt

Add snapshot of the whole source code.

2012-11-01 16:19:01 +01:00

README.txt

To get to 100% compatibility, we will need a software renderer as there are games out there that do tricks
that can't really be faked in a sensible way. Useful for homebrew too that mix sw and accel rendering.