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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef sw_Sampler_hpp
#define sw_Sampler_hpp
#include "Main/Config.hpp"
#include "Renderer/Surface.hpp"
#include "Common/Types.hpp"
namespace sw
{
struct Mipmap
{
const void *buffer[6];
float4 fWidth;
float4 fHeight;
float4 fDepth;
short uHalf[4];
short vHalf[4];
short wHalf[4];
short width[4];
short height[4];
short depth[4];
short onePitchP[4];
int sliceP[2];
};
struct Texture
{
Mipmap mipmap[MIPMAP_LEVELS];
float LOD;
float4 widthHeightLOD;
float4 widthLOD;
float4 heightLOD;
float4 depthLOD;
word4 borderColor4[4];
float4 borderColorF[4];
float maxAnisotropy;
int baseLevel;
int maxLevel;
float minLod;
float maxLod;
};
enum SamplerType
{
SAMPLER_PIXEL,
SAMPLER_VERTEX
};
enum TextureType ENUM_UNDERLYING_TYPE_UNSIGNED_INT
{
TEXTURE_NULL,
TEXTURE_2D,
TEXTURE_CUBE,
TEXTURE_3D,
TEXTURE_2D_ARRAY,
TEXTURE_LAST = TEXTURE_2D_ARRAY
};
enum FilterType ENUM_UNDERLYING_TYPE_UNSIGNED_INT
{
FILTER_POINT,
FILTER_GATHER,
FILTER_MIN_POINT_MAG_LINEAR,
FILTER_MIN_LINEAR_MAG_POINT,
FILTER_LINEAR,
FILTER_ANISOTROPIC,
FILTER_LAST = FILTER_ANISOTROPIC
};
enum MipmapType ENUM_UNDERLYING_TYPE_UNSIGNED_INT
{
MIPMAP_NONE,
MIPMAP_POINT,
MIPMAP_LINEAR,
MIPMAP_LAST = MIPMAP_LINEAR
};
enum AddressingMode ENUM_UNDERLYING_TYPE_UNSIGNED_INT
{
ADDRESSING_WRAP,
ADDRESSING_CLAMP,
ADDRESSING_MIRROR,
ADDRESSING_MIRRORONCE,
ADDRESSING_BORDER,
ADDRESSING_LAYER,
ADDRESSING_TEXELFETCH,
ADDRESSING_LAST = ADDRESSING_TEXELFETCH
};
enum SwizzleType ENUM_UNDERLYING_TYPE_UNSIGNED_INT
{
SWIZZLE_RED,
SWIZZLE_GREEN,
SWIZZLE_BLUE,
SWIZZLE_ALPHA,
SWIZZLE_ZERO,
SWIZZLE_ONE,
SWIZZLE_LAST = SWIZZLE_ONE
};
class Sampler
{
public:
struct State
{
State();
TextureType textureType : BITS(TEXTURE_LAST);
Format textureFormat : BITS(FORMAT_LAST);
FilterType textureFilter : BITS(FILTER_LAST);
AddressingMode addressingModeU : BITS(ADDRESSING_LAST);
AddressingMode addressingModeV : BITS(ADDRESSING_LAST);
AddressingMode addressingModeW : BITS(ADDRESSING_LAST);
MipmapType mipmapFilter : BITS(FILTER_LAST);
bool sRGB : 1;
SwizzleType swizzleR : BITS(SWIZZLE_LAST);
SwizzleType swizzleG : BITS(SWIZZLE_LAST);
SwizzleType swizzleB : BITS(SWIZZLE_LAST);
SwizzleType swizzleA : BITS(SWIZZLE_LAST);
bool highPrecisionFiltering : 1;
#if PERF_PROFILE
bool compressedFormat : 1;
#endif
};
Sampler();
~Sampler();
State samplerState() const;
void setTextureLevel(int face, int level, Surface *surface, TextureType type);
void setTextureFilter(FilterType textureFilter);
void setMipmapFilter(MipmapType mipmapFilter);
void setGatherEnable(bool enable);
void setAddressingModeU(AddressingMode addressingMode);
void setAddressingModeV(AddressingMode addressingMode);
void setAddressingModeW(AddressingMode addressingMode);
void setReadSRGB(bool sRGB);
void setBorderColor(const Color<float> &borderColor);
void setMaxAnisotropy(float maxAnisotropy);
void setHighPrecisionFiltering(bool highPrecisionFiltering);
void setSwizzleR(SwizzleType swizzleR);
void setSwizzleG(SwizzleType swizzleG);
void setSwizzleB(SwizzleType swizzleB);
void setSwizzleA(SwizzleType swizzleA);
void setBaseLevel(int baseLevel);
void setMaxLevel(int maxLevel);
void setMinLod(float minLod);
void setMaxLod(float maxLod);
static void setFilterQuality(FilterType maximumFilterQuality);
static void setMipmapQuality(MipmapType maximumFilterQuality);
void setMipmapLOD(float lod);
bool hasTexture() const;
bool hasUnsignedTexture() const;
bool hasCubeTexture() const;
bool hasVolumeTexture() const;
const Texture &getTextureData();
private:
MipmapType mipmapFilter() const;
TextureType getTextureType() const;
FilterType getTextureFilter() const;
AddressingMode getAddressingModeU() const;
AddressingMode getAddressingModeV() const;
AddressingMode getAddressingModeW() const;
Format externalTextureFormat;
Format internalTextureFormat;
TextureType textureType;
FilterType textureFilter;
AddressingMode addressingModeU;
AddressingMode addressingModeV;
AddressingMode addressingModeW;
MipmapType mipmapFilterState;
bool sRGB;
bool gather;
bool highPrecisionFiltering;
SwizzleType swizzleR;
SwizzleType swizzleG;
SwizzleType swizzleB;
SwizzleType swizzleA;
Texture texture;
float exp2LOD;
static FilterType maximumTextureFilterQuality;
static MipmapType maximumMipmapFilterQuality;
};
}
#endif // sw_Sampler_hpp
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