dolphin/Source/Core/VideoCommon/RenderState.h
Stenzek f6f9dc0cac RenderState: Approximate logic op with blending if unsupported
This is a giant hack which was previously removed because it causes
broken rendering. However, it seems that some devices still do not
support logical operations (looking at you, Adreno/Mali). Therefore, for
a handful of cases where the hack actually makes things slightly better,
we can use it.

... but not without spamming the log with warnings. With my warning
message PR, we can inform the users before emulation starts anyway.
2019-08-04 14:06:08 +10:00

151 lines
4.5 KiB
C++

// Copyright 2016 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include "Common/BitField.h"
#include "VideoCommon/BPMemory.h"
#include "VideoCommon/BPStructs.h"
enum class AbstractTextureFormat : u32;
enum class PrimitiveType : u32
{
Points,
Lines,
Triangles,
TriangleStrip,
};
union RasterizationState
{
void Generate(const BPMemory& bp, PrimitiveType primitive_type);
RasterizationState& operator=(const RasterizationState& rhs);
bool operator==(const RasterizationState& rhs) const { return hex == rhs.hex; }
bool operator!=(const RasterizationState& rhs) const { return hex != rhs.hex; }
bool operator<(const RasterizationState& rhs) const { return hex < rhs.hex; }
BitField<0, 2, GenMode::CullMode> cullmode;
BitField<3, 2, PrimitiveType> primitive;
u32 hex;
};
union FramebufferState
{
BitField<0, 8, AbstractTextureFormat> color_texture_format;
BitField<8, 8, AbstractTextureFormat> depth_texture_format;
BitField<16, 8, u32> samples;
BitField<24, 1, u32> per_sample_shading;
bool operator==(const FramebufferState& rhs) const { return hex == rhs.hex; }
bool operator!=(const FramebufferState& rhs) const { return hex != rhs.hex; }
FramebufferState& operator=(const FramebufferState& rhs);
u32 hex;
};
union DepthState
{
void Generate(const BPMemory& bp);
DepthState& operator=(const DepthState& rhs);
bool operator==(const DepthState& rhs) const { return hex == rhs.hex; }
bool operator!=(const DepthState& rhs) const { return hex != rhs.hex; }
bool operator<(const DepthState& rhs) const { return hex < rhs.hex; }
BitField<0, 1, u32> testenable;
BitField<1, 1, u32> updateenable;
BitField<2, 3, ZMode::CompareMode> func;
u32 hex;
};
union BlendingState
{
void Generate(const BPMemory& bp);
// HACK: Replaces logical operations with blend operations.
// Will not be bit-correct, and in some cases not even remotely in the same ballpark.
void ApproximateLogicOpWithBlending();
BlendingState& operator=(const BlendingState& rhs);
bool operator==(const BlendingState& rhs) const { return hex == rhs.hex; }
bool operator!=(const BlendingState& rhs) const { return hex != rhs.hex; }
bool operator<(const BlendingState& rhs) const { return hex < rhs.hex; }
BitField<0, 1, u32> blendenable;
BitField<1, 1, u32> logicopenable;
BitField<2, 1, u32> dstalpha;
BitField<3, 1, u32> colorupdate;
BitField<4, 1, u32> alphaupdate;
BitField<5, 1, u32> subtract;
BitField<6, 1, u32> subtractAlpha;
BitField<7, 1, u32> usedualsrc;
BitField<8, 3, BlendMode::BlendFactor> dstfactor;
BitField<11, 3, BlendMode::BlendFactor> srcfactor;
BitField<14, 3, BlendMode::BlendFactor> dstfactoralpha;
BitField<17, 3, BlendMode::BlendFactor> srcfactoralpha;
BitField<20, 4, BlendMode::LogicOp> logicmode;
u32 hex;
};
union SamplerState
{
using StorageType = u64;
enum class Filter : StorageType
{
Point,
Linear
};
enum class AddressMode : StorageType
{
Clamp,
Repeat,
MirroredRepeat
};
void Generate(const BPMemory& bp, u32 index);
SamplerState& operator=(const SamplerState& rhs);
bool operator==(const SamplerState& rhs) const { return hex == rhs.hex; }
bool operator!=(const SamplerState& rhs) const { return hex != rhs.hex; }
bool operator<(const SamplerState& rhs) const { return hex < rhs.hex; }
BitField<0, 1, Filter> min_filter;
BitField<1, 1, Filter> mag_filter;
BitField<2, 1, Filter> mipmap_filter;
BitField<3, 2, AddressMode> wrap_u;
BitField<5, 2, AddressMode> wrap_v;
BitField<7, 16, s64> lod_bias; // multiplied by 256
BitField<23, 8, u64> min_lod; // multiplied by 16
BitField<31, 8, u64> max_lod; // multiplied by 16
BitField<39, 1, u64> anisotropic_filtering;
StorageType hex;
};
namespace RenderState
{
RasterizationState GetInvalidRasterizationState();
RasterizationState GetNoCullRasterizationState(PrimitiveType primitive);
RasterizationState GetCullBackFaceRasterizationState(PrimitiveType primitive);
DepthState GetInvalidDepthState();
DepthState GetNoDepthTestingDepthState();
DepthState GetAlwaysWriteDepthState();
BlendingState GetInvalidBlendingState();
BlendingState GetNoBlendingBlendState();
BlendingState GetNoColorWriteBlendState();
SamplerState GetInvalidSamplerState();
SamplerState GetPointSamplerState();
SamplerState GetLinearSamplerState();
FramebufferState GetColorFramebufferState(AbstractTextureFormat format);
FramebufferState GetRGBA8FramebufferState();
} // namespace RenderState