Add vulkan files into skia repo.

src/gpu/vk/GrVkBuffer.cpp

Index: src/gpu/vk/GrVkBuffer.cpp
diff --git a/src/gpu/vk/GrVkBuffer.cpp b/src/gpu/vk/GrVkBuffer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..049fe414f3b6c3e0814a33b9ca0fc73372b1ab74
--- /dev/null
+++ b/src/gpu/vk/GrVkBuffer.cpp
@@ -0,0 +1,177 @@
+/*
+ * 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 "GrVkBuffer.h"
+#include "GrVkGpu.h"
+#include "GrVkMemory.h"
+#include "GrVkUtil.h"
+
+#define VK_CALL(GPU, X) GR_VK_CALL(GPU->vkInterface(), X)
+
+#ifdef SK_DEBUG
+#define VALIDATE() this->validate()
+#else
+#define VALIDATE() do {} while(false)
+#endif
+
+const GrVkBuffer::Resource* GrVkBuffer::Create(const GrVkGpu* gpu, const Desc& desc) {
+    VkBuffer       buffer;
+    VkDeviceMemory alloc;
+
+    // create the buffer object
+    VkBufferCreateInfo bufInfo;
+    memset(&bufInfo, 0, sizeof(VkBufferCreateInfo));
+    bufInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+    bufInfo.flags = 0;
+    bufInfo.size = desc.fSizeInBytes;
+    switch (desc.fType) {
+    case kVertex_Type:
+        bufInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
+        break;
+    case kIndex_Type:
+        bufInfo.usage = VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
+        break;
+    case kUniform_Type:
+        bufInfo.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
+        break;
+    case kCopyRead_Type:
+        bufInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
+        break;
+    case kCopyWrite_Type:
+        bufInfo.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT;
+        break;
+
+    }
+    bufInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+    bufInfo.queueFamilyIndexCount = 0;
+    bufInfo.pQueueFamilyIndices = nullptr;
+
+    VkResult err;
+    err = VK_CALL(gpu, CreateBuffer(gpu->device(), &bufInfo, nullptr, &buffer));
+    if (err) {
+        return nullptr;
+    }
+
+    VkMemoryPropertyFlags requiredMemProps = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
+                                             VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
+
+    if (!GrVkMemory::AllocAndBindBufferMemory(gpu,
+                                              buffer,
+                                              requiredMemProps,
+                                              &alloc)) {
+        VK_CALL(gpu, DestroyBuffer(gpu->device(), buffer, nullptr));
+        return nullptr;
+    }
+
+    const GrVkBuffer::Resource* resource = new GrVkBuffer::Resource(buffer, alloc);
+    if (!resource) {
+        VK_CALL(gpu, DestroyBuffer(gpu->device(), buffer, nullptr));
+        VK_CALL(gpu, FreeMemory(gpu->device(), alloc, nullptr));
+        return nullptr;
+    }
+
+    return resource;
+}
+
+
+void GrVkBuffer::addMemoryBarrier(const GrVkGpu* gpu,
+                                  VkAccessFlags srcAccessMask,
+                                  VkAccessFlags dstAccesMask,
+                                  VkPipelineStageFlags srcStageMask,
+                                  VkPipelineStageFlags dstStageMask,
+                                  bool byRegion) const {
+    VkBufferMemoryBarrier bufferMemoryBarrier = {
+        VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER, // sType
+        NULL,                                    // pNext
+        srcAccessMask,                           // srcAccessMask
+        dstAccesMask,                            // dstAccessMask
+        VK_QUEUE_FAMILY_IGNORED,                 // srcQueueFamilyIndex
+        VK_QUEUE_FAMILY_IGNORED,                 // dstQueueFamilyIndex
+        this->buffer(),                          // buffer
+        0,                                       // offset
+        fDesc.fSizeInBytes,                      // size
+    };
+
+    // TODO: restrict to area of buffer we're interested in
+    gpu->addBufferMemoryBarrier(srcStageMask, dstStageMask, byRegion, &bufferMemoryBarrier);
+}
+
+void GrVkBuffer::Resource::freeGPUData(const GrVkGpu* gpu) const {
+    SkASSERT(fBuffer);
+    SkASSERT(fAlloc);
+    VK_CALL(gpu, DestroyBuffer(gpu->device(), fBuffer, nullptr));
+    VK_CALL(gpu, FreeMemory(gpu->device(), fAlloc, nullptr));
+}
+
+void GrVkBuffer::vkRelease(const GrVkGpu* gpu) {
+    VALIDATE();
+    fResource->unref(gpu);
+    fResource = nullptr;
+    fMapPtr = nullptr;
+    VALIDATE();
+}
+
+void GrVkBuffer::vkAbandon() {
+    fResource->unrefAndAbandon();
+    fMapPtr = nullptr;
+    VALIDATE();
+}
+
+void* GrVkBuffer::vkMap(const GrVkGpu* gpu) {
+    VALIDATE();
+    SkASSERT(!this->vkIsMapped());
+
+    VkResult err = VK_CALL(gpu, MapMemory(gpu->device(), alloc(), 0, VK_WHOLE_SIZE, 0, &fMapPtr));
+    if (err) {
+        fMapPtr = nullptr;
+    }
+
+    VALIDATE();
+    return fMapPtr;
+}
+
+void GrVkBuffer::vkUnmap(const GrVkGpu* gpu) {
+    VALIDATE();
+    SkASSERT(this->vkIsMapped());
+
+    VK_CALL(gpu, UnmapMemory(gpu->device(), alloc()));
+
+    fMapPtr = nullptr;
+}
+
+bool GrVkBuffer::vkIsMapped() const {
+    VALIDATE();
+    return SkToBool(fMapPtr);
+}
+
+bool GrVkBuffer::vkUpdateData(const GrVkGpu* gpu, const void* src, size_t srcSizeInBytes) {
+    SkASSERT(!this->vkIsMapped());
+    VALIDATE();
+    if (srcSizeInBytes > fDesc.fSizeInBytes) {
+        return false;
+    }
+
+    void* mapPtr;
+    VkResult err = VK_CALL(gpu, MapMemory(gpu->device(), alloc(), 0, srcSizeInBytes, 0, &mapPtr));
+
+    if (VK_SUCCESS != err) {
+        return false;
+    }
+
+    memcpy(mapPtr, src, srcSizeInBytes);
+
+    VK_CALL(gpu, UnmapMemory(gpu->device(), alloc()));
+
+    return true;
+}
+
+void GrVkBuffer::validate() const {
+    SkASSERT(!fResource || kVertex_Type == fDesc.fType || kIndex_Type == fDesc.fType
+             || kCopyRead_Type == fDesc.fType || kCopyWrite_Type == fDesc.fType
+             || kUniform_Type == fDesc.fType);
+}
+