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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 "GrVkGpu.h" | |
| 13 #include "GrVkUtil.h" | |
| 14 #include "SkChecksum.h" | |
| 15 #include "glsl/GrGLSLFragmentProcessor.h" | |
| 16 #include "glsl/GrGLSLFragmentShaderBuilder.h" | |
| 17 #include "glsl/GrGLSLCaps.h" | |
| 18 | |
| 19 #include "shaderc/shaderc.h" | |
| 20 | |
| 21 static void add_texture_key(GrProcessorKeyBuilder* b, const GrProcessor& proc, | |
| 22 const GrGLSLCaps& caps) { | |
| 23 int numTextures = proc.numTextures(); | |
| 24 // Need two bytes per key (swizzle and target). | |
| 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 } | |
| 35 // zero the last 16 bits if the number of textures is odd. | |
| 36 if (numTextures & 0x1) { | |
| 37 k16[numTextures] = 0; | |
| 38 } | |
| 39 } | |
| 40 | |
| 41 /** | |
| 42 * A function which emits a meta key into the key builder. This is required beca
use shader code may | |
| 43 * be dependent on properties of the effect that the effect itself doesn't use | |
| 44 * in its key (e.g. the pixel format of textures used). So we create a meta-key f
or | |
| 45 * every effect using this function. It is also responsible for inserting the eff
ect's class ID | |
| 46 * which must be different for every GrProcessor subclass. It can fail if an effe
ct uses too many | |
| 47 * transforms, etc, for the space allotted in the meta-key. NOTE, both FPs and G
Ps share this | |
| 48 * function because it is hairy, though FPs do not have attribs, and GPs do not h
ave transforms | |
| 49 */ | |
| 50 static bool gen_meta_key(const GrProcessor& proc, | |
| 51 const GrGLSLCaps& glslCaps, | |
| 52 uint32_t transformKey, | |
| 53 GrProcessorKeyBuilder* b) { | |
| 54 size_t processorKeySize = b->size(); | |
| 55 uint32_t classID = proc.classID(); | |
| 56 | |
| 57 // Currently we allow 16 bits for the class id and the overall processor key
size. | |
| 58 static const uint32_t kMetaKeyInvalidMask = ~((uint32_t)SK_MaxU16); | |
| 59 if ((processorKeySize | classID) & kMetaKeyInvalidMask) { | |
| 60 return false; | |
| 61 } | |
| 62 | |
| 63 add_texture_key(b, proc, glslCaps); | |
| 64 | |
| 65 uint32_t* key = b->add32n(2); | |
| 66 key[0] = (classID << 16) | SkToU32(processorKeySize); | |
| 67 key[1] = transformKey; | |
| 68 return true; | |
| 69 } | |
| 70 | |
| 71 static bool gen_frag_proc_and_meta_keys(const GrPrimitiveProcessor& primProc, | |
| 72 const GrFragmentProcessor& fp, | |
| 73 const GrGLSLCaps& glslCaps, | |
| 74 GrProcessorKeyBuilder* b) { | |
| 75 for (int i = 0; i < fp.numChildProcessors(); ++i) { | |
| 76 if (!gen_frag_proc_and_meta_keys(primProc, fp.childProcessor(i), glslCap
s, b)) { | |
| 77 return false; | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 fp.getGLSLProcessorKey(glslCaps, b); | |
| 82 | |
| 83 return gen_meta_key(fp, glslCaps, primProc.getTransformKey(fp.coordTransform
s(), | |
| 84 fp.numTransformsExclChildren()), b); | |
| 85 } | |
| 86 | |
| 87 bool GrVkProgramDescBuilder::Build(GrProgramDesc* desc, | |
| 88 const GrPrimitiveProcessor& primProc, | |
| 89 const GrPipeline& pipeline, | |
| 90 const GrGLSLCaps& glslCaps) { | |
| 91 // The descriptor is used as a cache key. Thus when a field of the | |
| 92 // descriptor will not affect program generation (because of the attribute | |
| 93 // bindings in use or other descriptor field settings) it should be set | |
| 94 // to a canonical value to avoid duplicate programs with different keys. | |
| 95 | |
| 96 GrVkProgramDesc* vkDesc = (GrVkProgramDesc*)desc; | |
| 97 | |
| 98 GR_STATIC_ASSERT(0 == kProcessorKeysOffset % sizeof(uint32_t)); | |
| 99 // Make room for everything up to the effect keys. | |
| 100 vkDesc->key().reset(); | |
| 101 vkDesc->key().push_back_n(kProcessorKeysOffset); | |
| 102 | |
| 103 GrProcessorKeyBuilder b(&vkDesc->key()); | |
| 104 | |
| 105 primProc.getGLSLProcessorKey(glslCaps, &b); | |
| 106 if (!gen_meta_key(primProc, glslCaps, 0, &b)) { | |
| 107 vkDesc->key().reset(); | |
| 108 return false; | |
| 109 } | |
| 110 | |
| 111 for (int i = 0; i < pipeline.numFragmentProcessors(); ++i) { | |
| 112 const GrFragmentProcessor& fp = pipeline.getFragmentProcessor(i); | |
| 113 if (!gen_frag_proc_and_meta_keys(primProc, fp, glslCaps, &b)) { | |
| 114 vkDesc->key().reset(); | |
| 115 return false; | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 const GrXferProcessor& xp = pipeline.getXferProcessor(); | |
| 120 xp.getGLSLProcessorKey(glslCaps, &b); | |
| 121 if (!gen_meta_key(xp, glslCaps, 0, &b)) { | |
| 122 vkDesc->key().reset(); | |
| 123 return false; | |
| 124 } | |
| 125 | |
| 126 // --------DO NOT MOVE HEADER ABOVE THIS LINE-------------------------------
------------------- | |
| 127 // Because header is a pointer into the dynamic array, we can't push any new
data into the key | |
| 128 // below here. | |
| 129 KeyHeader* header = vkDesc->atOffset<KeyHeader, kHeaderOffset>(); | |
| 130 | |
| 131 // make sure any padding in the header is zeroed. | |
| 132 memset(header, 0, kHeaderSize); | |
| 133 | |
| 134 if (pipeline.readsFragPosition()) { | |
| 135 header->fFragPosKey = | |
| 136 GrGLSLFragmentShaderBuilder::KeyForFragmentPosition(pipeline.getRend
erTarget()); | |
| 137 } else { | |
| 138 header->fFragPosKey = 0; | |
| 139 } | |
| 140 | |
| 141 header->fOutputSwizzle = | |
| 142 glslCaps.configOutputSwizzle(pipeline.getRenderTarget()->config()).asKey
(); | |
| 143 | |
| 144 if (pipeline.ignoresCoverage()) { | |
| 145 header->fIgnoresCoverage = 1; | |
| 146 } else { | |
| 147 header->fIgnoresCoverage = 0; | |
| 148 } | |
| 149 | |
| 150 header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters(); | |
| 151 header->fColorEffectCnt = pipeline.numColorFragmentProcessors(); | |
| 152 header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors(); | |
| 153 vkDesc->finalize(); | |
| 154 return true; | |
| 155 } | |
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Chromium Code Reviews
Issue 1723503002:
Revert of Add vulkan files into skia repo. (Closed)
Base URL: https://skia.googlesource.com/skia.git@merge