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1 /* | |
2 * Copyright 2015 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 #include "GrVkProgramDesc.h" | |
8 | |
9 //#include "GrVkProcessor.h" | |
10 #include "GrProcessor.h" | |
11 #include "GrPipeline.h" | |
12 #include "GrRenderTargetPriv.h" | |
13 #include "GrVkGpu.h" | |
14 #include "GrVkUtil.h" | |
15 #include "SkChecksum.h" | |
16 #include "glsl/GrGLSLFragmentProcessor.h" | |
17 #include "glsl/GrGLSLFragmentShaderBuilder.h" | |
18 #include "glsl/GrGLSLCaps.h" | |
19 | |
20 static void add_texture_key(GrProcessorKeyBuilder* b, const GrProcessor& proc, | |
21 const GrGLSLCaps& caps) { | |
22 int numTextures = proc.numTextures(); | |
23 SkASSERT(0 == proc.numBuffers()); | |
24 // Need two bytes per key (swizzle, sampler type, and precision). | |
25 int word32Count = (proc.numTextures() + 1) / 2; | |
26 if (0 == word32Count) { | |
27 return; | |
28 } | |
29 uint16_t* k16 = SkTCast<uint16_t*>(b->add32n(word32Count)); | |
30 for (int i = 0; i < numTextures; ++i) { | |
31 const GrTextureAccess& access = proc.textureAccess(i); | |
32 GrTexture* texture = access.getTexture(); | |
33 k16[i] = SkToU16(caps.configTextureSwizzle(texture->config()).asKey() | | |
34 (caps.samplerPrecision(texture->config(), access.getVis
ibility()) << 8)); | |
35 } | |
36 // zero the last 16 bits if the number of textures is odd. | |
37 if (numTextures & 0x1) { | |
38 k16[numTextures] = 0; | |
39 } | |
40 } | |
41 | |
42 /** | |
43 * A function which emits a meta key into the key builder. This is required beca
use shader code may | |
44 * be dependent on properties of the effect that the effect itself doesn't use | |
45 * in its key (e.g. the pixel format of textures used). So we create a meta-key f
or | |
46 * every effect using this function. It is also responsible for inserting the eff
ect's class ID | |
47 * which must be different for every GrProcessor subclass. It can fail if an effe
ct uses too many | |
48 * transforms, etc, for the space allotted in the meta-key. NOTE, both FPs and G
Ps share this | |
49 * function because it is hairy, though FPs do not have attribs, and GPs do not h
ave transforms | |
50 */ | |
51 static bool gen_meta_key(const GrProcessor& proc, | |
52 const GrGLSLCaps& glslCaps, | |
53 uint32_t transformKey, | |
54 GrProcessorKeyBuilder* b) { | |
55 size_t processorKeySize = b->size(); | |
56 uint32_t classID = proc.classID(); | |
57 | |
58 // Currently we allow 16 bits for the class id and the overall processor key
size. | |
59 static const uint32_t kMetaKeyInvalidMask = ~((uint32_t)SK_MaxU16); | |
60 if ((processorKeySize | classID) & kMetaKeyInvalidMask) { | |
61 return false; | |
62 } | |
63 | |
64 add_texture_key(b, proc, glslCaps); | |
65 | |
66 uint32_t* key = b->add32n(2); | |
67 key[0] = (classID << 16) | SkToU32(processorKeySize); | |
68 key[1] = transformKey; | |
69 return true; | |
70 } | |
71 | |
72 static bool gen_frag_proc_and_meta_keys(const GrPrimitiveProcessor& primProc, | |
73 const GrFragmentProcessor& fp, | |
74 const GrGLSLCaps& glslCaps, | |
75 GrProcessorKeyBuilder* b) { | |
76 for (int i = 0; i < fp.numChildProcessors(); ++i) { | |
77 if (!gen_frag_proc_and_meta_keys(primProc, fp.childProcessor(i), glslCap
s, b)) { | |
78 return false; | |
79 } | |
80 } | |
81 | |
82 fp.getGLSLProcessorKey(glslCaps, b); | |
83 | |
84 return gen_meta_key(fp, glslCaps, primProc.getTransformKey(fp.coordTransform
s(), | |
85 fp.numTransformsExclChildren()), b); | |
86 } | |
87 | |
88 bool GrVkProgramDescBuilder::Build(GrProgramDesc* desc, | |
89 const GrPrimitiveProcessor& primProc, | |
90 const GrPipeline& pipeline, | |
91 const GrGLSLCaps& glslCaps) { | |
92 // The descriptor is used as a cache key. Thus when a field of the | |
93 // descriptor will not affect program generation (because of the attribute | |
94 // bindings in use or other descriptor field settings) it should be set | |
95 // to a canonical value to avoid duplicate programs with different keys. | |
96 | |
97 GrVkProgramDesc* vkDesc = (GrVkProgramDesc*)desc; | |
98 | |
99 GR_STATIC_ASSERT(0 == kProcessorKeysOffset % sizeof(uint32_t)); | |
100 // Make room for everything up to the effect keys. | |
101 vkDesc->key().reset(); | |
102 vkDesc->key().push_back_n(kProcessorKeysOffset); | |
103 | |
104 GrProcessorKeyBuilder b(&vkDesc->key()); | |
105 | |
106 primProc.getGLSLProcessorKey(glslCaps, &b); | |
107 if (!gen_meta_key(primProc, glslCaps, 0, &b)) { | |
108 vkDesc->key().reset(); | |
109 return false; | |
110 } | |
111 GrProcessor::RequiredFeatures requiredFeatures = primProc.requiredFeatures()
; | |
112 | |
113 for (int i = 0; i < pipeline.numFragmentProcessors(); ++i) { | |
114 const GrFragmentProcessor& fp = pipeline.getFragmentProcessor(i); | |
115 if (!gen_frag_proc_and_meta_keys(primProc, fp, glslCaps, &b)) { | |
116 vkDesc->key().reset(); | |
117 return false; | |
118 } | |
119 requiredFeatures |= fp.requiredFeatures(); | |
120 } | |
121 | |
122 const GrXferProcessor& xp = pipeline.getXferProcessor(); | |
123 xp.getGLSLProcessorKey(glslCaps, &b); | |
124 if (!gen_meta_key(xp, glslCaps, 0, &b)) { | |
125 vkDesc->key().reset(); | |
126 return false; | |
127 } | |
128 requiredFeatures |= xp.requiredFeatures(); | |
129 | |
130 // --------DO NOT MOVE HEADER ABOVE THIS LINE-------------------------------
------------------- | |
131 // Because header is a pointer into the dynamic array, we can't push any new
data into the key | |
132 // below here. | |
133 KeyHeader* header = vkDesc->atOffset<KeyHeader, kHeaderOffset>(); | |
134 | |
135 // make sure any padding in the header is zeroed. | |
136 memset(header, 0, kHeaderSize); | |
137 | |
138 GrRenderTarget* rt = pipeline.getRenderTarget(); | |
139 | |
140 if (requiredFeatures & (GrProcessor::kFragmentPosition_RequiredFeature | | |
141 GrProcessor::kSampleLocations_RequiredFeature)) { | |
142 header->fSurfaceOriginKey = GrGLSLFragmentShaderBuilder::KeyForSurfaceOr
igin(rt->origin()); | |
143 } else { | |
144 header->fSurfaceOriginKey = 0; | |
145 } | |
146 | |
147 if (requiredFeatures & GrProcessor::kSampleLocations_RequiredFeature) { | |
148 SkASSERT(pipeline.isHWAntialiasState()); | |
149 header->fSamplePatternKey = | |
150 rt->renderTargetPriv().getMultisampleSpecs(pipeline.getStencil()).fU
niqueID; | |
151 } else { | |
152 header->fSamplePatternKey = 0; | |
153 } | |
154 | |
155 header->fOutputSwizzle = glslCaps.configOutputSwizzle(rt->config()).asKey(); | |
156 | |
157 if (pipeline.ignoresCoverage()) { | |
158 header->fIgnoresCoverage = 1; | |
159 } else { | |
160 header->fIgnoresCoverage = 0; | |
161 } | |
162 | |
163 header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters(); | |
164 header->fColorEffectCnt = pipeline.numColorFragmentProcessors(); | |
165 header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors(); | |
166 vkDesc->finalize(); | |
167 return true; | |
168 } | |
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