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ppsspp/GPU/D3D11/StateMappingD3D11.cpp
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Henrik RydgårdandClaude Opus 5.5 d0baab5614 Compute FIXA/FIXB blends like the GE 
The GE's blend terms are floor((2c+1)(2f+1)/1024), which truncates, while the
hardware multiplies by f/255 and rounds, so every pass of a fixed color blend
chain came out up to a level brighter. God Eater Burst's bloom is many such
passes and ended up far too bright.

For additive FIXA/FIXB blends that aren't just 0 and 0xFFFFFF, the shader
now computes the src term exactly and lowers it by 0.5 - (2B+1)/1024, and the
blend constant is the GE's dst factor (2B+1)/512, so the hardware's rounding
of the sum lands on the GE's floor (except where the src term would go below
zero). Blend constants are passed as floats to make that possible.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-09 09:09:36 +02:00

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// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include "Common/CommonWindows.h"
#include <d3d11.h>
#include <d3d11_1.h>
#include <algorithm>
#include <wrl/client.h>
#include "Common/Data/Convert/SmallDataConvert.h"
#include "GPU/GPUState.h"
#include "GPU/ge_constants.h"
#include "GPU/Common/GPUStateUtils.h"
#include "GPU/Common/FramebufferManagerCommon.h"
#include "GPU/D3D11/DrawEngineD3D11.h"
#include "GPU/D3D11/StateMappingD3D11.h"
#include "GPU/D3D11/FramebufferManagerD3D11.h"
#include "GPU/D3D11/TextureCacheD3D11.h"
using namespace Microsoft::WRL;
// These tables all fit into u8s.
static const D3D11_BLEND d3d11BlendFactorLookup[(size_t)BlendFactor::COUNT] = {
D3D11_BLEND_ZERO,
D3D11_BLEND_ONE,
D3D11_BLEND_SRC_COLOR,
D3D11_BLEND_INV_SRC_COLOR,
D3D11_BLEND_DEST_COLOR,
D3D11_BLEND_INV_DEST_COLOR,
D3D11_BLEND_SRC_ALPHA,
D3D11_BLEND_INV_SRC_ALPHA,
D3D11_BLEND_DEST_ALPHA,
D3D11_BLEND_INV_DEST_ALPHA,
D3D11_BLEND_BLEND_FACTOR,
D3D11_BLEND_INV_BLEND_FACTOR,
D3D11_BLEND_BLEND_FACTOR,
D3D11_BLEND_INV_BLEND_FACTOR,
D3D11_BLEND_SRC1_COLOR,
D3D11_BLEND_INV_SRC1_COLOR,
D3D11_BLEND_SRC1_ALPHA,
D3D11_BLEND_INV_SRC1_ALPHA,
};
static const D3D11_BLEND_OP d3d11BlendEqLookup[(size_t)BlendEq::COUNT] = {
D3D11_BLEND_OP_ADD,
D3D11_BLEND_OP_SUBTRACT,
D3D11_BLEND_OP_REV_SUBTRACT,
D3D11_BLEND_OP_MIN,
D3D11_BLEND_OP_MAX,
};
static const D3D11_CULL_MODE cullingMode[] = {
D3D11_CULL_BACK,
D3D11_CULL_FRONT,
};
static const D3D11_COMPARISON_FUNC compareOps[] = {
D3D11_COMPARISON_NEVER,
D3D11_COMPARISON_ALWAYS,
D3D11_COMPARISON_EQUAL,
D3D11_COMPARISON_NOT_EQUAL,
D3D11_COMPARISON_LESS,
D3D11_COMPARISON_LESS_EQUAL,
D3D11_COMPARISON_GREATER,
D3D11_COMPARISON_GREATER_EQUAL,
};
static const D3D11_STENCIL_OP stencilOps[] = {
D3D11_STENCIL_OP_KEEP,
D3D11_STENCIL_OP_ZERO,
D3D11_STENCIL_OP_REPLACE,
D3D11_STENCIL_OP_INVERT,
D3D11_STENCIL_OP_INCR_SAT,
D3D11_STENCIL_OP_DECR_SAT,
D3D11_STENCIL_OP_KEEP, // reserved
D3D11_STENCIL_OP_KEEP, // reserved
};
static const D3D11_PRIMITIVE_TOPOLOGY primToD3D11[8] = {
D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST, // Points are expanded to triangles.
D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST, // Lines are expanded to triangles too.
D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST, // Lines are expanded to triangles too.
D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST,
D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP,
D3D11_PRIMITIVE_TOPOLOGY_UNDEFINED, // D3D11 doesn't do triangle fans.
D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST, // Rectangles are expanded to triangles.
};
static const D3D11_LOGIC_OP logicOps[] = {
D3D11_LOGIC_OP_CLEAR,
D3D11_LOGIC_OP_AND,
D3D11_LOGIC_OP_AND_REVERSE,
D3D11_LOGIC_OP_COPY,
D3D11_LOGIC_OP_AND_INVERTED,
D3D11_LOGIC_OP_NOOP,
D3D11_LOGIC_OP_XOR,
D3D11_LOGIC_OP_OR,
D3D11_LOGIC_OP_NOR,
D3D11_LOGIC_OP_EQUIV,
D3D11_LOGIC_OP_INVERT,
D3D11_LOGIC_OP_OR_REVERSE,
D3D11_LOGIC_OP_COPY_INVERTED,
D3D11_LOGIC_OP_OR_INVERTED,
D3D11_LOGIC_OP_NAND,
D3D11_LOGIC_OP_SET,
};
class FramebufferManagerD3D11;
class ShaderManagerD3D11;
void DrawEngineD3D11::ApplyDrawState(int prim) {
dynState_.topology = primToD3D11[prim];
if (!gstate_c.IsDirty(DIRTY_BLEND_STATE | DIRTY_TEXTURE_IMAGE | DIRTY_TEXTURE_PARAMS | DIRTY_VIEWPORTSCISSOR_STATE | DIRTY_RASTER_STATE | DIRTY_DEPTHSTENCIL_STATE)) {
// nothing to do
return;
}
bool useBufferedRendering = framebufferManager_->UseBufferedRendering();
// Blend
if (gstate_c.IsDirty(DIRTY_BLEND_STATE)) {
if (gstate.isModeClear()) {
keys_.blend.value = 0; // full wipe
keys_.blend.blendEnable = false;
dynState_.useBlendColor = false;
keys_.blend.colorWriteMask = ClearModeChannelMask();
} else {
keys_.blend.value = 0;
pipelineState_.Convert(draw_->GetShaderLanguageDesc().bitwiseOps, gstate_c.Use(GPU_USE_SHADER_BLENDING));
GenericMaskState &maskState = pipelineState_.maskState;
GenericBlendState &blendState = pipelineState_.blendState;
// We ignore the logicState on D3D since there's no support, the emulation of it is blend-and-shader only.
if (pipelineState_.FramebufferRead()) {
FBOTexState fboTexBindState = FBO_TEX_NONE;
ApplyFramebufferRead(&fboTexBindState);
// The shader takes over the responsibility for blending, so recompute.
ApplyStencilReplaceAndLogicOpIgnoreBlend(blendState.replaceAlphaWithStencil, blendState);
if (fboTexBindState == FBO_TEX_COPY_BIND_TEX) {
framebufferManager_->BindFramebufferAsColorTexture(1, framebufferManager_->GetCurrentRenderVFB(), BINDFBCOLOR_MAY_COPY | BINDFBCOLOR_UNCACHED, 0);
// No sampler required, we do a plain Load in the pixel shader.
fboTexBound_ = true;
fboTexBindState = FBO_TEX_NONE;
framebufferManager_->RebindFramebuffer("RebindFramebuffer - ApplyDrawState");
// Must dirty blend state here so we re-copy next time. Example: Lunar's spell effects.
dirtyRequiresRecheck_ |= DIRTY_BLEND_STATE;
gstate_c.Dirty(DIRTY_BLEND_STATE);
}
dirtyRequiresRecheck_ |= DIRTY_FRAGMENTSHADER_STATE;
gstate_c.Dirty(DIRTY_FRAGMENTSHADER_STATE);
} else {
if (fboTexBound_) {
fboTexBound_ = false;
dirtyRequiresRecheck_ |= DIRTY_FRAGMENTSHADER_STATE;
gstate_c.Dirty(DIRTY_FRAGMENTSHADER_STATE);
}
}
if (blendState.blendEnabled) {
keys_.blend.blendEnable = true;
keys_.blend.logicOpEnable = false;
keys_.blend.blendOpColor = d3d11BlendEqLookup[(size_t)blendState.eqColor];
keys_.blend.blendOpAlpha = d3d11BlendEqLookup[(size_t)blendState.eqAlpha];
keys_.blend.srcColor = d3d11BlendFactorLookup[(size_t)blendState.srcColor];
keys_.blend.srcAlpha = d3d11BlendFactorLookup[(size_t)blendState.srcAlpha];
keys_.blend.destColor = d3d11BlendFactorLookup[(size_t)blendState.dstColor];
keys_.blend.destAlpha = d3d11BlendFactorLookup[(size_t)blendState.dstAlpha];
if (blendState.dirtyShaderBlendFixValues) {
dirtyRequiresRecheck_ |= DIRTY_SHADERBLEND;
gstate_c.Dirty(DIRTY_SHADERBLEND);
}
dynState_.useBlendColor = blendState.useBlendColor;
if (blendState.useBlendColor) {
blendState.blendColorToFloat4(dynState_.blendColor);
}
} else {
keys_.blend.blendEnable = false;
dynState_.useBlendColor = false;
}
if (gstate_c.Use(GPU_USE_LOGIC_OP)) {
// Logic Ops
if (gstate.isLogicOpEnabled() && gstate.getLogicOp() != GE_LOGIC_COPY) {
keys_.blend.blendEnable = false; // Can't have both blend & logic op - although I think the PSP can!
keys_.blend.logicOpEnable = true;
keys_.blend.logicOp = logicOps[gstate.getLogicOp()];
} else {
keys_.blend.logicOpEnable = false;
}
}
keys_.blend.colorWriteMask = maskState.channelMask;
}
}
if (gstate_c.IsDirty(DIRTY_RASTER_STATE)) {
keys_.raster.value = 0;
bool wantCull = !gstate.isModeClear() && prim != GE_PRIM_RECTANGLES && prim > GE_PRIM_LINE_STRIP && gstate.isCullEnabled();
keys_.raster.cullMode = wantCull ? (gstate.getCullMode() ? D3D11_CULL_FRONT : D3D11_CULL_BACK) : D3D11_CULL_NONE;
// In D3D11, depth clamping is on by default, we have to enable clipping. This is the opposite from the
// other APIs.
if (gstate.isModeClear() || gstate.isModeThrough()) {
// TODO: Might happen in clear mode if not through...
keys_.raster.depthClipEnable = 1;
} else {
if (gstate.getDepthRangeMin() == 0 || gstate.getDepthRangeMax() == 65535) {
// We get some extra clamping behavior if clipping is enabled.
const bool clamp = gstate.isDepthClipEnabled() && gstate_c.Use(GPU_USE_DEPTH_CLAMP);
keys_.raster.depthClipEnable = !clamp;
} else {
// We just want to clip in this case, the clamp would be clipped anyway.
keys_.raster.depthClipEnable = 1;
}
}
}
if (gstate_c.IsDirty(DIRTY_DEPTHSTENCIL_STATE)) {
GenericStencilFuncState stencilState;
ConvertStencilFuncState(stencilState);
if (gstate.isModeClear()) {
keys_.depthStencil.value = 0;
keys_.depthStencil.depthTestEnable = true;
keys_.depthStencil.depthCompareOp = D3D11_COMPARISON_ALWAYS;
keys_.depthStencil.depthWriteEnable = gstate.isClearModeDepthMask();
// Stencil Test
bool alphaMask = gstate.isClearModeAlphaMask();
if (alphaMask) {
keys_.depthStencil.stencilTestEnable = true;
keys_.depthStencil.stencilCompareFunc = D3D11_COMPARISON_ALWAYS;
keys_.depthStencil.stencilPassOp = D3D11_STENCIL_OP_REPLACE;
keys_.depthStencil.stencilFailOp = D3D11_STENCIL_OP_REPLACE;
keys_.depthStencil.stencilDepthFailOp = D3D11_STENCIL_OP_REPLACE;
dynState_.useStencil = true;
// In clear mode, the stencil value is set to the alpha value of the vertex.
// A normal clear will be 2 points, the second point has the color.
// We override this value in the pipeline from software transform for clear rectangles.
dynState_.stencilRef = 0xFF;
// But we still apply the stencil write mask.
keys_.depthStencil.stencilWriteMask = stencilState.writeMask;
} else {
keys_.depthStencil.stencilTestEnable = false;
dynState_.useStencil = false;
}
} else {
keys_.depthStencil.value = 0;
// Depth Test
if (!IsDepthTestEffectivelyDisabled()) {
keys_.depthStencil.depthTestEnable = true;
keys_.depthStencil.depthCompareOp = compareOps[gstate.getDepthTestFunction()];
keys_.depthStencil.depthWriteEnable = gstate.isDepthWriteEnabled();
UpdateEverUsedEqualDepth(gstate.getDepthTestFunction());
} else {
keys_.depthStencil.depthTestEnable = false;
keys_.depthStencil.depthWriteEnable = false;
keys_.depthStencil.depthCompareOp = D3D11_COMPARISON_ALWAYS;
}
// Stencil Test
if (stencilState.enabled) {
keys_.depthStencil.stencilTestEnable = true;
keys_.depthStencil.stencilCompareFunc = compareOps[stencilState.testFunc];
keys_.depthStencil.stencilPassOp = stencilOps[stencilState.zPass];
keys_.depthStencil.stencilFailOp = stencilOps[stencilState.sFail];
keys_.depthStencil.stencilDepthFailOp = stencilOps[stencilState.zFail];
keys_.depthStencil.stencilCompareMask = stencilState.testMask;
keys_.depthStencil.stencilWriteMask = stencilState.writeMask;
dynState_.useStencil = true;
dynState_.stencilRef = stencilState.testRef;
// Nasty special case for Spongebob and similar where it tries to write zeros to alpha/stencil during
// depth-fail. We can't write to alpha then because the pixel is killed. However, we can invert the depth
// test and modify the alpha function...
if (SpongebobDepthInverseConditions(stencilState)) {
keys_.blend.blendEnable = true;
keys_.blend.blendOpAlpha = D3D11_BLEND_OP_ADD;
keys_.blend.blendOpColor = D3D11_BLEND_OP_ADD;
keys_.blend.srcColor = D3D11_BLEND_ZERO;
keys_.blend.destColor = D3D11_BLEND_ZERO;
keys_.blend.logicOpEnable = false;
keys_.blend.srcAlpha = D3D11_BLEND_ZERO;
keys_.blend.destAlpha = D3D11_BLEND_ZERO;
keys_.blend.colorWriteMask = D3D11_COLOR_WRITE_ENABLE_ALPHA;
keys_.depthStencil.depthCompareOp = D3D11_COMPARISON_LESS; // Inverse of GREATER_EQUAL
keys_.depthStencil.stencilCompareFunc = D3D11_COMPARISON_ALWAYS;
// Invert
keys_.depthStencil.stencilPassOp = D3D11_STENCIL_OP_ZERO;
keys_.depthStencil.stencilFailOp = D3D11_STENCIL_OP_ZERO;
keys_.depthStencil.stencilDepthFailOp = D3D11_STENCIL_OP_KEEP;
dirtyRequiresRecheck_ |= DIRTY_BLEND_STATE | DIRTY_DEPTHSTENCIL_STATE;
gstate_c.Dirty(DIRTY_BLEND_STATE | DIRTY_DEPTHSTENCIL_STATE);
}
} else {
keys_.depthStencil.stencilTestEnable = false;
dynState_.useStencil = false;
}
}
}
if (gstate_c.IsDirty(DIRTY_VIEWPORTSCISSOR_STATE)) {
ViewportAndScissor vpAndScissor;
ConvertViewportAndScissor(
framebufferManager_->GetDisplayLayoutConfigCopy(),
useBufferedRendering,
framebufferManager_->GetRenderWidth(), framebufferManager_->GetRenderHeight(),
framebufferManager_->GetTargetBufferWidth(), framebufferManager_->GetTargetBufferHeight(),
vpAndScissor);
Draw::Viewport &vp = dynState_.viewport;
vp.TopLeftX = vpAndScissor.viewportX;
vp.TopLeftY = vpAndScissor.viewportY;
vp.Width = vpAndScissor.viewportW;
vp.Height = vpAndScissor.viewportH;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
D3D11_RECT &scissor = dynState_.scissor;
scissor.left = vpAndScissor.scissorX;
scissor.top = vpAndScissor.scissorY;
scissor.right = vpAndScissor.scissorX + std::max(0, vpAndScissor.scissorW);
scissor.bottom = vpAndScissor.scissorY + std::max(0, vpAndScissor.scissorH);
}
// Actually create/set the state objects only after we're done mapping all the state.
// There might have been interactions between depth and blend above.
if (gstate_c.IsDirty(DIRTY_BLEND_STATE)) {
if (!device1_) {
ID3D11BlendState *bs;
if (!blendCache_.Get(keys_.blend.value, &bs) || !bs) {
D3D11_BLEND_DESC desc{};
D3D11_RENDER_TARGET_BLEND_DESC &rt = desc.RenderTarget[0];
rt.BlendEnable = keys_.blend.blendEnable;
rt.BlendOp = (D3D11_BLEND_OP)keys_.blend.blendOpColor;
rt.BlendOpAlpha = (D3D11_BLEND_OP)keys_.blend.blendOpAlpha;
rt.SrcBlend = (D3D11_BLEND)keys_.blend.srcColor;
rt.DestBlend = (D3D11_BLEND)keys_.blend.destColor;
rt.SrcBlendAlpha = (D3D11_BLEND)keys_.blend.srcAlpha;
rt.DestBlendAlpha = (D3D11_BLEND)keys_.blend.destAlpha;
rt.RenderTargetWriteMask = keys_.blend.colorWriteMask;
ASSERT_SUCCESS(device_->CreateBlendState(&desc, &bs));
blendCache_.Insert(keys_.blend.value, bs);
}
blendState_ = bs;
} else {
ID3D11BlendState1 *bs1;
if (!blendCache1_.Get(keys_.blend.value, &bs1) || !bs1) {
D3D11_BLEND_DESC1 desc1{};
D3D11_RENDER_TARGET_BLEND_DESC1 &rt = desc1.RenderTarget[0];
rt.BlendEnable = keys_.blend.blendEnable;
rt.BlendOp = (D3D11_BLEND_OP)keys_.blend.blendOpColor;
rt.BlendOpAlpha = (D3D11_BLEND_OP)keys_.blend.blendOpAlpha;
rt.SrcBlend = (D3D11_BLEND)keys_.blend.srcColor;
rt.DestBlend = (D3D11_BLEND)keys_.blend.destColor;
rt.SrcBlendAlpha = (D3D11_BLEND)keys_.blend.srcAlpha;
rt.DestBlendAlpha = (D3D11_BLEND)keys_.blend.destAlpha;
rt.RenderTargetWriteMask = keys_.blend.colorWriteMask;
rt.LogicOpEnable = keys_.blend.logicOpEnable;
rt.LogicOp = (D3D11_LOGIC_OP)keys_.blend.logicOp;
ASSERT_SUCCESS(device1_->CreateBlendState1(&desc1, &bs1));
blendCache1_.Insert(keys_.blend.value, bs1);
}
blendState1_ = bs1;
}
}
if (gstate_c.IsDirty(DIRTY_RASTER_STATE)) {
ID3D11RasterizerState *rs;
if (!rasterCache_.Get(keys_.raster.value, &rs) || !rs) {
D3D11_RASTERIZER_DESC desc{};
desc.CullMode = (D3D11_CULL_MODE)(keys_.raster.cullMode);
desc.FillMode = D3D11_FILL_SOLID;
desc.ScissorEnable = TRUE;
desc.FrontCounterClockwise = TRUE;
desc.DepthClipEnable = keys_.raster.depthClipEnable;
ASSERT_SUCCESS(device_->CreateRasterizerState(&desc, &rs));
rasterCache_.Insert(keys_.raster.value, rs);
}
rasterState_ = rs;
}
if (gstate_c.IsDirty(DIRTY_DEPTHSTENCIL_STATE)) {
ID3D11DepthStencilState *ds;
if (!depthStencilCache_.Get(keys_.depthStencil.value, &ds) || !ds) {
D3D11_DEPTH_STENCIL_DESC desc{};
desc.DepthEnable = keys_.depthStencil.depthTestEnable;
desc.DepthWriteMask = keys_.depthStencil.depthWriteEnable ? D3D11_DEPTH_WRITE_MASK_ALL : D3D11_DEPTH_WRITE_MASK_ZERO;
desc.DepthFunc = (D3D11_COMPARISON_FUNC)keys_.depthStencil.depthCompareOp;
desc.StencilEnable = keys_.depthStencil.stencilTestEnable;
desc.StencilReadMask = keys_.depthStencil.stencilCompareMask;
desc.StencilWriteMask = keys_.depthStencil.stencilWriteMask;
desc.FrontFace.StencilFailOp = (D3D11_STENCIL_OP)keys_.depthStencil.stencilFailOp;
desc.FrontFace.StencilPassOp = (D3D11_STENCIL_OP)keys_.depthStencil.stencilPassOp;
desc.FrontFace.StencilDepthFailOp = (D3D11_STENCIL_OP)keys_.depthStencil.stencilDepthFailOp;
desc.FrontFace.StencilFunc = (D3D11_COMPARISON_FUNC)keys_.depthStencil.stencilCompareFunc;
desc.BackFace = desc.FrontFace;
ASSERT_SUCCESS(device_->CreateDepthStencilState(&desc, &ds));
depthStencilCache_.Insert(keys_.depthStencil.value, ds);
}
depthStencilState_ = ds;
}
}
void DrawEngineD3D11::ApplyDrawStateLate(bool applyStencilRef, uint8_t stencilRef) {
// we go through Draw here because it automatically handles screen rotation, as needed in UWP on mobiles.
if (gstate_c.IsDirty(DIRTY_VIEWPORTSCISSOR_STATE)) {
draw_->SetViewport(dynState_.viewport);
draw_->SetScissorRect(dynState_.scissor.left, dynState_.scissor.top, dynState_.scissor.right - dynState_.scissor.left, dynState_.scissor.bottom - dynState_.scissor.top);
}
if (gstate_c.IsDirty(DIRTY_RASTER_STATE)) {
context_->RSSetState(rasterState_);
}
if (gstate_c.IsDirty(DIRTY_BLEND_STATE)) {
// Need to do this AFTER ApplyTexture because the process of depalettization can ruin the blend state.
const float *blendColor = dynState_.blendColor;
if (device1_) {
context1_->OMSetBlendState(blendState1_, blendColor, 0xFFFFFFFF);
} else {
context_->OMSetBlendState(blendState_, blendColor, 0xFFFFFFFF);
}
}
if (gstate_c.IsDirty(DIRTY_DEPTHSTENCIL_STATE) || applyStencilRef) {
context_->OMSetDepthStencilState(depthStencilState_, applyStencilRef ? stencilRef : dynState_.stencilRef);
}
gstate_c.Clean(DIRTY_VIEWPORTSCISSOR_STATE | DIRTY_DEPTHSTENCIL_STATE | DIRTY_RASTER_STATE | DIRTY_BLEND_STATE);
gstate_c.Dirty(dirtyRequiresRecheck_);
dirtyRequiresRecheck_ = 0;
}
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