1 | // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
2 | // |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
4 | // you may not use this file except in compliance with the License. |
5 | // You may obtain a copy of the License at |
6 | // |
7 | // http://www.apache.org/licenses/LICENSE-2.0 |
8 | // |
9 | // Unless required by applicable law or agreed to in writing, software |
10 | // distributed under the License is distributed on an "AS IS" BASIS, |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | // See the License for the specific language governing permissions and |
13 | // limitations under the License. |
14 | |
15 | #ifndef sw_SamplerCore_hpp |
16 | #define sw_SamplerCore_hpp |
17 | |
18 | #include "ShaderCore.hpp" |
19 | #include "Device/Sampler.hpp" |
20 | #include "Reactor/Print.hpp" |
21 | #include "Reactor/Reactor.hpp" |
22 | |
23 | #ifdef None |
24 | #undef None // b/127920555 |
25 | #endif |
26 | |
27 | namespace sw |
28 | { |
29 | using namespace rr; |
30 | |
31 | enum SamplerMethod : uint32_t |
32 | { |
33 | Implicit, // Compute gradients (pixel shader only). |
34 | Bias, // Compute gradients and add provided bias. |
35 | Lod, // Use provided LOD. |
36 | Grad, // Use provided gradients. |
37 | Fetch, // Use provided integer coordinates. |
38 | Base, // Sample base level. |
39 | Query, // Return implicit LOD. |
40 | Gather, // Return one channel of each texel in footprint. |
41 | SAMPLER_METHOD_LAST = Gather, |
42 | }; |
43 | |
44 | // TODO(b/129523279): Eliminate and use SpirvShader::ImageInstruction instead. |
45 | struct SamplerFunction |
46 | { |
47 | SamplerFunction(SamplerMethod method, bool offset = false, bool sample = false) |
48 | : method(method), offset(offset), sample(sample) |
49 | {} |
50 | |
51 | operator SamplerMethod() { return method; } |
52 | |
53 | const SamplerMethod method; |
54 | const bool offset; |
55 | const bool sample; |
56 | }; |
57 | |
58 | class SamplerCore |
59 | { |
60 | public: |
61 | SamplerCore(Pointer<Byte> &constants, const Sampler &state); |
62 | |
63 | Vector4f sampleTexture(Pointer<Byte> &texture, Pointer<Byte> &sampler, Float4 &u, Float4 &v, Float4 &w, Float4 &q, Float &&lodOrBias, Float4 &dsx, Float4 &dsy, Vector4f &offset, SamplerFunction function); |
64 | |
65 | private: |
66 | Short4 offsetSample(Short4 &uvw, Pointer<Byte> &mipmap, int halfOffset, bool wrap, int count, Float &lod); |
67 | Vector4s sampleFilter(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Vector4f &offset, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, SamplerFunction function); |
68 | Vector4s sampleAniso(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Vector4f &offset, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, bool secondLOD, SamplerFunction function); |
69 | Vector4s sampleQuad(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Vector4f &offset, Float &lod, bool secondLOD, SamplerFunction function); |
70 | Vector4s sampleQuad2D(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Vector4f &offset, Float &lod, bool secondLOD, SamplerFunction function); |
71 | Vector4s sample3D(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Vector4f &offset, Float &lod, bool secondLOD, SamplerFunction function); |
72 | Vector4f sampleFloatFilter(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Float4 &q, Vector4f &offset, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, SamplerFunction function); |
73 | Vector4f sampleFloatAniso(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Float4 &q, Vector4f &offset, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, bool secondLOD, SamplerFunction function); |
74 | Vector4f sampleFloat(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Float4 &q, Vector4f &offset, Float &lod, bool secondLOD, SamplerFunction function); |
75 | Vector4f sampleFloat2D(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Float4 &q, Vector4f &offset, Float &lod, bool secondLOD, SamplerFunction function); |
76 | Vector4f sampleFloat3D(Pointer<Byte> &texture, Float4 &u, Float4 &v, Float4 &w, Vector4f &offset, Float &lod, bool secondLOD, SamplerFunction function); |
77 | Float log2sqrt(Float lod); |
78 | Float log2(Float lod); |
79 | void computeLod(Pointer<Byte> &texture, Pointer<Byte> &sampler, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, Float4 &u, Float4 &v, Float4 &dsx, Float4 &dsy, SamplerFunction function); |
80 | void computeLodCube(Pointer<Byte> &texture, Pointer<Byte> &sampler, Float &lod, Float4 &u, Float4 &v, Float4 &w, Float4 &dsx, Float4 &dsy, Float4 &M, SamplerFunction function); |
81 | void computeLod3D(Pointer<Byte> &texture, Pointer<Byte> &sampler, Float &lod, Float4 &u, Float4 &v, Float4 &w, Float4 &dsx, Float4 &dsy, SamplerFunction function); |
82 | Int4 cubeFace(Float4 &U, Float4 &V, Float4 &x, Float4 &y, Float4 &z, Float4 &M); |
83 | Short4 applyOffset(Short4 &uvw, Float4 &offset, const Int4 &whd, AddressingMode mode); |
84 | void computeIndices(UInt index[4], Short4 uuuu, Short4 vvvv, Short4 wwww, Vector4f &offset, const Pointer<Byte> &mipmap, SamplerFunction function); |
85 | void computeIndices(UInt index[4], Int4 uuuu, Int4 vvvv, Int4 wwww, Int4 valid, const Pointer<Byte> &mipmap, SamplerFunction function); |
86 | Vector4s sampleTexel(Short4 &u, Short4 &v, Short4 &s, Vector4f &offset, Pointer<Byte> &mipmap, Pointer<Byte> buffer, SamplerFunction function); |
87 | Vector4s sampleTexel(UInt index[4], Pointer<Byte> buffer); |
88 | Vector4f sampleTexel(Int4 &u, Int4 &v, Int4 &s, Float4 &z, Pointer<Byte> &mipmap, Pointer<Byte> buffer, SamplerFunction function); |
89 | Vector4f replaceBorderTexel(const Vector4f &c, Int4 valid); |
90 | void selectMipmap(const Pointer<Byte> &texture, Pointer<Byte> &mipmap, Pointer<Byte> &buffer, const Float &lod, bool secondLOD); |
91 | Short4 address(Float4 &uw, AddressingMode addressingMode, Pointer<Byte>& mipmap); |
92 | void address(Float4 &uw, Int4& xyz0, Int4& xyz1, Float4& f, Pointer<Byte>& mipmap, Float4 &texOffset, Int4 &filter, int whd, AddressingMode addressingMode, SamplerFunction function); |
93 | Int4 computeFilterOffset(Float &lod); |
94 | |
95 | void convertSigned15(Float4 &cf, Short4 &ci); |
96 | void convertUnsigned16(Float4 &cf, Short4 &ci); |
97 | void sRGBtoLinear16_8_16(Short4 &c); |
98 | |
99 | bool hasFloatTexture() const; |
100 | bool hasUnnormalizedIntegerTexture() const; |
101 | bool hasUnsignedTextureComponent(int component) const; |
102 | int textureComponentCount() const; |
103 | bool hasThirdCoordinate() const; |
104 | bool has16bitTextureFormat() const; |
105 | bool has8bitTextureComponents() const; |
106 | bool has16bitTextureComponents() const; |
107 | bool has32bitIntegerTextureComponents() const; |
108 | bool hasQuadLayout() const; |
109 | bool isYcbcrFormat() const; |
110 | bool isRGBComponent(int component) const; |
111 | bool borderModeActive() const; |
112 | VkComponentSwizzle gatherSwizzle() const; |
113 | |
114 | Pointer<Byte> &constants; |
115 | const Sampler &state; |
116 | }; |
117 | } |
118 | |
119 | #ifdef ENABLE_RR_PRINT |
120 | namespace rr { |
121 | template <> struct PrintValue::Ty<sw::SamplerFunction> |
122 | { |
123 | static std::string fmt(const sw::SamplerFunction& v) |
124 | { |
125 | return std::string("SamplerFunction[" ) + |
126 | "method: " + std::to_string(v.method) + |
127 | ", offset: " + std::to_string(v.offset) + |
128 | ", sample: " + std::to_string(v.sample) + |
129 | "]" ; |
130 | } |
131 | |
132 | static std::vector<rr::Value*> val(const sw::SamplerFunction& v) { return {}; } |
133 | }; |
134 | } |
135 | #endif // ENABLE_RR_PRINT |
136 | |
137 | #endif // sw_SamplerCore_hpp |
138 | |