Add vulkan files into skia repo.

src/gpu/vk/GrVkMemory.cpp

Index: src/gpu/vk/GrVkMemory.cpp
diff --git a/src/gpu/vk/GrVkMemory.cpp b/src/gpu/vk/GrVkMemory.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..276fd4b0a20e0f27d029cea2461b8ca1f6225abb
--- /dev/null
+++ b/src/gpu/vk/GrVkMemory.cpp
@@ -0,0 +1,157 @@
+/*
+* 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 "GrVkMemory.h"
+
+#include "GrVkGpu.h"
+#include "GrVkUtil.h"
+
+static bool get_valid_memory_type_index(VkPhysicalDeviceMemoryProperties physDevMemProps,
+                                        uint32_t typeBits,
+                                        VkMemoryPropertyFlags requestedMemFlags,
+                                        uint32_t* typeIndex) {
+    uint32_t checkBit = 1;
+    for (uint32_t i = 0; i < 32; ++i) {
+        if (typeBits & checkBit) {
+            uint32_t supportedFlags = physDevMemProps.memoryTypes[i].propertyFlags &
+                                      requestedMemFlags;
+            if (supportedFlags == requestedMemFlags) {
+                *typeIndex = i;
+                return true;
+            }
+        }
+        checkBit <<= 1;
+    }
+    return false;
+}
+
+static bool alloc_device_memory(const GrVkGpu* gpu,
+                                VkMemoryRequirements* memReqs,
+                                const VkMemoryPropertyFlags flags,
+                                VkDeviceMemory* memory) {
+    uint32_t typeIndex;
+    if (!get_valid_memory_type_index(gpu->physicalDeviceMemoryProperties(),
+                                     memReqs->memoryTypeBits,
+                                     flags,
+                                     &typeIndex)) {
+        return false;
+    }
+
+    VkMemoryAllocateInfo allocInfo = {
+        VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,      // sType
+        NULL,                                        // pNext
+        memReqs->size,                               // allocationSize
+        typeIndex,                                   // memoryTypeIndex
+    };
+
+    VkResult err = GR_VK_CALL(gpu->vkInterface(), AllocateMemory(gpu->device(),
+                                                                 &allocInfo,
+                                                                 nullptr,
+                                                                 memory));
+    if (err) {
+        return false;
+    }
+    return true;
+}
+
+bool GrVkMemory::AllocAndBindBufferMemory(const GrVkGpu* gpu,
+                                          VkBuffer buffer,
+                                          const VkMemoryPropertyFlags flags,
+                                          VkDeviceMemory* memory) {
+    const GrVkInterface* interface = gpu->vkInterface();
+    VkDevice device = gpu->device();
+
+    VkMemoryRequirements memReqs;
+    GR_VK_CALL(interface, GetBufferMemoryRequirements(device, buffer, &memReqs));
+
+
+    if (!alloc_device_memory(gpu, &memReqs, flags, memory)) {
+        return false;
+    }
+
+    // Bind Memory to queue
+    VkResult err = GR_VK_CALL(interface, BindBufferMemory(device, buffer, *memory, 0));
+    if (err) {
+        GR_VK_CALL(interface, FreeMemory(device, *memory, nullptr));
+        return false;
+    }
+    return true;
+}
+
+bool GrVkMemory::AllocAndBindImageMemory(const GrVkGpu* gpu,
+                                         VkImage image,
+                                         const VkMemoryPropertyFlags flags,
+                                         VkDeviceMemory* memory) {
+    const GrVkInterface* interface = gpu->vkInterface();
+    VkDevice device = gpu->device();
+
+    VkMemoryRequirements memReqs;
+    GR_VK_CALL(interface, GetImageMemoryRequirements(device, image, &memReqs));
+
+    if (!alloc_device_memory(gpu, &memReqs, flags, memory)) {
+        return false;
+    }
+
+    // Bind Memory to queue
+    VkResult err = GR_VK_CALL(interface, BindImageMemory(device, image, *memory, 0));
+    if (err) {
+        GR_VK_CALL(interface, FreeMemory(device, *memory, nullptr));
+        return false;
+    }
+    return true;
+}
+
+VkPipelineStageFlags GrVkMemory::LayoutToPipelineStageFlags(const VkImageLayout layout) {
+    if (VK_IMAGE_LAYOUT_GENERAL == layout) {
+        return VK_PIPELINE_STAGE_ALL_COMMANDS_BIT;
+    } else if (VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL == layout ||
+               VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL == layout) {
+        return VK_PIPELINE_STAGE_TRANSFER_BIT;
+    } else if (VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL == layout ||
+               VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL == layout ||
+               VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL == layout ||
+               VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL == layout) {
+        return VK_PIPELINE_STAGE_ALL_COMMANDS_BIT;
+    } else if (VK_IMAGE_LAYOUT_PREINITIALIZED == layout) {
+        return VK_PIPELINE_STAGE_HOST_BIT;
+    }
+
+    SkASSERT(VK_IMAGE_LAYOUT_UNDEFINED == layout);
+    return VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
+}
+
+VkAccessFlags GrVkMemory::LayoutToSrcAccessMask(const VkImageLayout layout) {
+    // Currently we assume we will never being doing any explict shader writes (this doesn't include
+    // color attachment or depth/stencil writes). So we will ignore the
+    // VK_MEMORY_OUTPUT_SHADER_WRITE_BIT.
+
+    // We can only directly access the host memory if we are in preinitialized or general layout,
+    // and the image is linear.
+    // TODO: Add check for linear here so we are not always adding host to general, and we should
+    //       only be in preinitialized if we are linear
+    VkAccessFlags flags = 0;;
+    if (VK_IMAGE_LAYOUT_GENERAL == layout) {
+        flags = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
+            VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
+            VK_ACCESS_TRANSFER_WRITE_BIT |
+            VK_ACCESS_HOST_WRITE_BIT | VK_ACCESS_HOST_READ_BIT;
+    } else if (VK_IMAGE_LAYOUT_PREINITIALIZED == layout) {
+        flags = VK_ACCESS_HOST_WRITE_BIT | VK_ACCESS_HOST_READ_BIT;
+    } else if (VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL == layout) {
+        flags = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
+    } else if (VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL == layout) {
+        flags = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
+    } else if (VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL == layout) {
+        flags = VK_ACCESS_TRANSFER_WRITE_BIT;
+    } else if (VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL == layout) {
+        flags = VK_ACCESS_TRANSFER_READ_BIT;
+    } else if (VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL == layout) {
+        flags = VK_ACCESS_SHADER_READ_BIT;
+    }
+    return flags;
+}
+