Merge ProgramDesc's for GL and Vulkan

src/gpu/vk/GrVkProgramDesc.cpp

Index: src/gpu/vk/GrVkProgramDesc.cpp
diff --git a/src/gpu/vk/GrVkProgramDesc.cpp b/src/gpu/vk/GrVkProgramDesc.cpp
deleted file mode 100644
index 2154af652c7e7de3bc80854ee59b37ad9e999770..0000000000000000000000000000000000000000
--- a/src/gpu/vk/GrVkProgramDesc.cpp
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "GrVkProgramDesc.h"
-
-//#include "GrVkProcessor.h"
-#include "GrProcessor.h"
-#include "GrPipeline.h"
-#include "GrRenderTargetPriv.h"
-#include "GrVkGpu.h"
-#include "GrVkUtil.h"
-#include "SkChecksum.h"
-#include "glsl/GrGLSLFragmentProcessor.h"
-#include "glsl/GrGLSLFragmentShaderBuilder.h"
-#include "glsl/GrGLSLCaps.h"
-
-static void add_texture_key(GrProcessorKeyBuilder* b, const GrProcessor& proc,
-                            const GrGLSLCaps& caps) {
-    int numTextures = proc.numTextures();
-    SkASSERT(0 == proc.numBuffers());
-    // Need two bytes per key (swizzle, sampler type, and precision).
-    int word32Count = (proc.numTextures() + 1) / 2;
-    if (0 == word32Count) {
-        return;
-    }
-    uint16_t* k16 = SkTCast<uint16_t*>(b->add32n(word32Count));
-    for (int i = 0; i < numTextures; ++i) {
-        const GrTextureAccess& access = proc.textureAccess(i);
-        GrTexture* texture = access.getTexture();
-        k16[i] = SkToU16(caps.configTextureSwizzle(texture->config()).asKey() |
-                         (caps.samplerPrecision(texture->config(), access.getVisibility()) << 8));
-    }
-    // zero the last 16 bits if the number of textures is odd.
-    if (numTextures & 0x1) {
-        k16[numTextures] = 0;
-    }
-}
-
-/**
-* A function which emits a meta key into the key builder.  This is required because shader code may
-* be dependent on properties of the effect that the effect itself doesn't use
-* in its key (e.g. the pixel format of textures used). So we create a meta-key for
-* every effect using this function. It is also responsible for inserting the effect's class ID
-* which must be different for every GrProcessor subclass. It can fail if an effect uses too many
-* transforms, etc, for the space allotted in the meta-key.  NOTE, both FPs and GPs share this
-* function because it is hairy, though FPs do not have attribs, and GPs do not have transforms
-*/
-static bool gen_meta_key(const GrProcessor& proc,
-                         const GrGLSLCaps& glslCaps,
-                         uint32_t transformKey,
-                         GrProcessorKeyBuilder* b) {
-    size_t processorKeySize = b->size();
-    uint32_t classID = proc.classID();
-
-    // Currently we allow 16 bits for the class id and the overall processor key size.
-    static const uint32_t kMetaKeyInvalidMask = ~((uint32_t)SK_MaxU16);
-    if ((processorKeySize | classID) & kMetaKeyInvalidMask) {
-        return false;
-    }
-
-    add_texture_key(b, proc, glslCaps);
-
-    uint32_t* key = b->add32n(2);
-    key[0] = (classID << 16) | SkToU32(processorKeySize);
-    key[1] = transformKey;
-    return true;
-}
-
-static bool gen_frag_proc_and_meta_keys(const GrPrimitiveProcessor& primProc,
-                                        const GrFragmentProcessor& fp,
-                                        const GrGLSLCaps& glslCaps,
-                                        GrProcessorKeyBuilder* b) {
-    for (int i = 0; i < fp.numChildProcessors(); ++i) {
-        if (!gen_frag_proc_and_meta_keys(primProc, fp.childProcessor(i), glslCaps, b)) {
-            return false;
-        }
-    }
-
-    fp.getGLSLProcessorKey(glslCaps, b);
-
-    return gen_meta_key(fp, glslCaps, primProc.getTransformKey(fp.coordTransforms(),
-        fp.numTransformsExclChildren()), b);
-}
-
-bool GrVkProgramDescBuilder::Build(GrProgramDesc* desc,
-                                   const GrPrimitiveProcessor& primProc,
-                                   const GrPipeline& pipeline,
-                                   const GrGLSLCaps& glslCaps) {
-    // The descriptor is used as a cache key. Thus when a field of the
-    // descriptor will not affect program generation (because of the attribute
-    // bindings in use or other descriptor field settings) it should be set
-    // to a canonical value to avoid duplicate programs with different keys.
-
-    GrVkProgramDesc* vkDesc = (GrVkProgramDesc*)desc;
-
-    GR_STATIC_ASSERT(0 == kProcessorKeysOffset % sizeof(uint32_t));
-    // Make room for everything up to the effect keys.
-    vkDesc->key().reset();
-    vkDesc->key().push_back_n(kProcessorKeysOffset);
-
-    GrProcessorKeyBuilder b(&vkDesc->key());
-
-    primProc.getGLSLProcessorKey(glslCaps, &b);
-    if (!gen_meta_key(primProc, glslCaps, 0, &b)) {
-        vkDesc->key().reset();
-        return false;
-    }
-    GrProcessor::RequiredFeatures requiredFeatures = primProc.requiredFeatures();
-
-    for (int i = 0; i < pipeline.numFragmentProcessors(); ++i) {
-        const GrFragmentProcessor& fp = pipeline.getFragmentProcessor(i);
-        if (!gen_frag_proc_and_meta_keys(primProc, fp, glslCaps, &b)) {
-            vkDesc->key().reset();
-            return false;
-        }
-        requiredFeatures |= fp.requiredFeatures();
-    }
-
-    const GrXferProcessor& xp = pipeline.getXferProcessor();
-    xp.getGLSLProcessorKey(glslCaps, &b);
-    if (!gen_meta_key(xp, glslCaps, 0, &b)) {
-        vkDesc->key().reset();
-        return false;
-    }
-    requiredFeatures |= xp.requiredFeatures();
-
-    // --------DO NOT MOVE HEADER ABOVE THIS LINE--------------------------------------------------
-    // Because header is a pointer into the dynamic array, we can't push any new data into the key
-    // below here.
-    KeyHeader* header = vkDesc->atOffset<KeyHeader, kHeaderOffset>();
-
-    // make sure any padding in the header is zeroed.
-    memset(header, 0, kHeaderSize);
-
-    GrRenderTarget* rt = pipeline.getRenderTarget();
-
-    if (requiredFeatures & (GrProcessor::kFragmentPosition_RequiredFeature |
-                            GrProcessor::kSampleLocations_RequiredFeature)) {
-        header->fSurfaceOriginKey = GrGLSLFragmentShaderBuilder::KeyForSurfaceOrigin(rt->origin());
-    } else {
-        header->fSurfaceOriginKey = 0;
-    }
-
-    if (requiredFeatures & GrProcessor::kSampleLocations_RequiredFeature) {
-        SkASSERT(pipeline.isHWAntialiasState());
-        header->fSamplePatternKey =
-            rt->renderTargetPriv().getMultisampleSpecs(pipeline.getStencil()).fUniqueID;
-    } else {
-        header->fSamplePatternKey = 0;
-    }
-
-    header->fOutputSwizzle = glslCaps.configOutputSwizzle(rt->config()).asKey();
-
-    if (pipeline.ignoresCoverage()) {
-        header->fIgnoresCoverage = 1;
-    } else {
-        header->fIgnoresCoverage = 0;
-    }
-
-    header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters();
-    header->fColorEffectCnt = pipeline.numColorFragmentProcessors();
-    header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors();
-    vkDesc->finalize();
-    return true;
-}