// Save an image to a PPM image file.
//
// This function issues commands to copy/convert the swapchain image
// from whatever compatible format the swapchain image uses
// to a single format (VK_FORMAT_R8G8B8A8_UNORM) so that the converted
// result can be easily written to a PPM file.
//
// Error handling: If there is a problem, this function should silently
// fail without affecting the Present operation going on in the caller.
// The numerous debug asserts are to catch programming errors and are not
// expected to assert. Recovery and clean up are implemented for image memory
// allocation failures.
// (TODO) It would be nice to pass any failure info to DebugReport or something.
static void writePPM(const char *filename, VkImage image1) {
VkResult err;
bool pass;
// Bail immediately if we can't find the image.
if (imageMap.empty() || imageMap.find(image1) == imageMap.end())
return;
// Collect object info from maps. This info is generally recorded
// by the other functions hooked in this layer.
VkDevice device = imageMap[image1]->device;
VkPhysicalDevice physicalDevice = deviceMap[device]->physicalDevice;
VkInstance instance = physDeviceMap[physicalDevice]->instance;
VkQueue queue = deviceMap[device]->queue;
DeviceMapStruct *devMap = get_dev_info(device);
if (NULL == devMap) {
assert(0);
return;
}
VkLayerDispatchTable *pTableDevice = devMap->device_dispatch_table;
VkLayerDispatchTable *pTableQueue =
get_dev_info(static_cast<VkDevice>(static_cast<void *>(queue)))
->device_dispatch_table;
VkLayerInstanceDispatchTable *pInstanceTable;
pInstanceTable = instance_dispatch_table(instance);
// Gather incoming image info and check image format for compatibility with
// the target format.
// This function supports both 24-bit and 32-bit swapchain images.
VkFormat const target32bitFormat = VK_FORMAT_R8G8B8A8_UNORM;
VkFormat const target24bitFormat = VK_FORMAT_R8G8B8_UNORM;
uint32_t const width = imageMap[image1]->imageExtent.width;
uint32_t const height = imageMap[image1]->imageExtent.height;
VkFormat const format = imageMap[image1]->format;
uint32_t const numChannels = vk_format_get_channel_count(format);
if ((vk_format_get_compatibility_class(target24bitFormat) !=
vk_format_get_compatibility_class(format)) &&
(vk_format_get_compatibility_class(target32bitFormat) !=
vk_format_get_compatibility_class(format))) {
assert(0);
return;
}
if ((3 != numChannels) && (4 != numChannels)) {
assert(0);
return;
}
// General Approach
//
// The idea here is to copy/convert the swapchain image into another image
// that can be mapped and read by the CPU to produce a PPM file.
// The image must be untiled and converted to a specific format for easy
// parsing. The memory for the final image must be host-visible.
// Note that in Vulkan, a BLIT operation must be used to perform a format
// conversion.
//
// Devices vary in their ability to blit to/from linear and optimal tiling.
// So we must query the device properties to get this information.
//
// If the device cannot BLIT to a LINEAR image, then the operation must be
// done in two steps:
// 1) BLIT the swapchain image (image1) to a temp image (image2) that is
// created with TILING_OPTIMAL.
// 2) COPY image2 to another temp image (image3) that is created with
// TILING_LINEAR.
// 3) Map image 3 and write the PPM file.
//
// If the device can BLIT to a LINEAR image, then:
// 1) BLIT the swapchain image (image1) to a temp image (image2) that is
// created with TILING_LINEAR.
// 2) Map image 2 and write the PPM file.
//
// There seems to be no way to tell if the swapchain image (image1) is tiled
// or not. We therefore assume that the BLIT operation can always read from
// both linear and optimal tiled (swapchain) images.
// There is therefore no point in looking at the BLIT_SRC properties.
//
// There is also the optimization where the incoming and target formats are
// the same. In this case, just do a COPY.
VkFormatProperties targetFormatProps;
pInstanceTable->GetPhysicalDeviceFormatProperties(
physicalDevice,
(3 == numChannels) ? target24bitFormat : target32bitFormat,
&targetFormatProps);
bool need2steps = false;
bool copyOnly = false;
if ((target24bitFormat == format) || (target32bitFormat == format)) {
copyOnly = true;
} else {
bool const bltLinear = targetFormatProps.linearTilingFeatures &
VK_FORMAT_FEATURE_BLIT_DST_BIT
? true
: false;
bool const bltOptimal = targetFormatProps.optimalTilingFeatures &
VK_FORMAT_FEATURE_BLIT_DST_BIT
? true
: false;
if (!bltLinear && !bltOptimal) {
// Cannot blit to either target tiling type. It should be pretty
// unlikely to have a device that cannot blit to either type.
// But punt by just doing a copy and possibly have the wrong
// colors. This should be quite rare.
copyOnly = true;
} else if (!bltLinear && bltOptimal) {
// Cannot blit to a linear target but can blt to optimal, so copy
// after blit is needed.
need2steps = true;
}
// Else bltLinear is available and only 1 step is needed.
}
// Put resources that need to be cleaned up in a struct with a destructor
// so that things get cleaned up when this function is exited.
WritePPMCleanupData data = {};
data.device = device;
data.pTableDevice = pTableDevice;
// Set up the image creation info for both the blit and copy images, in case
// both are needed.
VkImageCreateInfo imgCreateInfo2 = {
VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
NULL,
0,
VK_IMAGE_TYPE_2D,
VK_FORMAT_R8G8B8A8_UNORM,
{width, height, 1},
1,
1,
VK_SAMPLE_COUNT_1_BIT,
VK_IMAGE_TILING_LINEAR,
VK_IMAGE_USAGE_TRANSFER_DST_BIT,
VK_SHARING_MODE_EXCLUSIVE,
0,
NULL,
VK_IMAGE_LAYOUT_UNDEFINED,
};
VkImageCreateInfo imgCreateInfo3 = imgCreateInfo2;
// If we need both images, set up image2 to be read/write and tiled.
if (need2steps) {
imgCreateInfo2.tiling = VK_IMAGE_TILING_OPTIMAL;
imgCreateInfo2.usage =
VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
}
VkMemoryAllocateInfo memAllocInfo = {
VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, NULL,
0, // allocationSize, queried later
0 // memoryTypeIndex, queried later
};
VkMemoryRequirements memRequirements;
VkPhysicalDeviceMemoryProperties memoryProperties;
// Create image2 and allocate its memory. It could be the intermediate or
// final image.
err =
pTableDevice->CreateImage(device, &imgCreateInfo2, NULL, &data.image2);
assert(!err);
if (VK_SUCCESS != err)
return;
pTableDevice->GetImageMemoryRequirements(device, data.image2,
&memRequirements);
memAllocInfo.allocationSize = memRequirements.size;
pInstanceTable->GetPhysicalDeviceMemoryProperties(physicalDevice,
&memoryProperties);
pass = memory_type_from_properties(
&memoryProperties, memRequirements.memoryTypeBits,
need2steps ? VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT
: VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
&memAllocInfo.memoryTypeIndex);
assert(pass);
err = pTableDevice->AllocateMemory(device, &memAllocInfo, NULL, &data.mem2);
assert(!err);
if (VK_SUCCESS != err)
return;
err = pTableQueue->BindImageMemory(device, data.image2, data.mem2, 0);
assert(!err);
if (VK_SUCCESS != err)
return;
// Create image3 and allocate its memory, if needed.
if (need2steps) {
err = pTableDevice->CreateImage(device, &imgCreateInfo3, NULL,
&data.image3);
assert(!err);
if (VK_SUCCESS != err)
return;
pTableDevice->GetImageMemoryRequirements(device, data.image3,
&memRequirements);
memAllocInfo.allocationSize = memRequirements.size;
pInstanceTable->GetPhysicalDeviceMemoryProperties(physicalDevice,
&memoryProperties);
pass = memory_type_from_properties(
&memoryProperties, memRequirements.memoryTypeBits,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, &memAllocInfo.memoryTypeIndex);
assert(pass);
err = pTableDevice->AllocateMemory(device, &memAllocInfo, NULL,
&data.mem3);
assert(!err);
if (VK_SUCCESS != err)
return;
err = pTableQueue->BindImageMemory(device, data.image3, data.mem3, 0);
assert(!err);
if (VK_SUCCESS != err)
return;
}
// Set up the command buffer. We get a command buffer from a pool we saved
// in a hooked function, which would be the application's pool.
const VkCommandBufferAllocateInfo allocCommandBufferInfo = {
VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO, NULL,
deviceMap[device]->commandPool, VK_COMMAND_BUFFER_LEVEL_PRIMARY, 1};
data.commandPool = deviceMap[device]->commandPool;
err = pTableDevice->AllocateCommandBuffers(device, &allocCommandBufferInfo,
&data.commandBuffer);
assert(!err);
if (VK_SUCCESS != err)
return;
VkDevice cmdBuf =
static_cast<VkDevice>(static_cast<void *>(data.commandBuffer));
deviceMap.emplace(cmdBuf, devMap);
VkLayerDispatchTable *pTableCommandBuffer;
pTableCommandBuffer = get_dev_info(cmdBuf)->device_dispatch_table;
// We have just created a dispatchable object, but the dispatch table has
// not been placed in the object yet. When a "normal" application creates
// a command buffer, the dispatch table is installed by the top-level api
// binding (trampoline.c). But here, we have to do it ourselves.
if (!devMap->pfn_dev_init) {
*((const void **)data.commandBuffer) = *(void **)device;
} else {
err = devMap->pfn_dev_init(device, (void *)data.commandBuffer);
assert(!err);
}
const VkCommandBufferBeginInfo commandBufferBeginInfo = {
VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO, NULL,
VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
};
err = pTableCommandBuffer->BeginCommandBuffer(data.commandBuffer,
&commandBufferBeginInfo);
assert(!err);
// This barrier is used to transition from/to present Layout
VkImageMemoryBarrier presentMemoryBarrier = {
VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
NULL,
VK_ACCESS_TRANSFER_WRITE_BIT,
VK_ACCESS_TRANSFER_READ_BIT,
VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
VK_QUEUE_FAMILY_IGNORED,
VK_QUEUE_FAMILY_IGNORED,
image1,
{VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}};
// This barrier is used to transition from a newly-created layout to a blt
// or copy destination layout.
VkImageMemoryBarrier destMemoryBarrier = {
VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
NULL,
0,
VK_ACCESS_TRANSFER_WRITE_BIT,
VK_IMAGE_LAYOUT_UNDEFINED,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
VK_QUEUE_FAMILY_IGNORED,
VK_QUEUE_FAMILY_IGNORED,
data.image2,
{VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}};
// This barrier is used to transition a dest layout to general layout.
VkImageMemoryBarrier generalMemoryBarrier = {
VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
NULL,
VK_ACCESS_TRANSFER_WRITE_BIT,
VK_ACCESS_TRANSFER_READ_BIT,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
VK_IMAGE_LAYOUT_GENERAL,
VK_QUEUE_FAMILY_IGNORED,
VK_QUEUE_FAMILY_IGNORED,
data.image2,
{VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}};
VkPipelineStageFlags srcStages = VK_PIPELINE_STAGE_TRANSFER_BIT;
VkPipelineStageFlags dstStages = VK_PIPELINE_STAGE_TRANSFER_BIT;
// The source image needs to be transitioned from present to transfer
// source.
pTableCommandBuffer->CmdPipelineBarrier(data.commandBuffer, srcStages,
dstStages, 0, 0, NULL, 0, NULL, 1,
&presentMemoryBarrier);
// image2 needs to be transitioned from its undefined state to transfer
// destination.
pTableCommandBuffer->CmdPipelineBarrier(data.commandBuffer, srcStages,
dstStages, 0, 0, NULL, 0, NULL, 1,
&destMemoryBarrier);
const VkImageCopy imageCopyRegion = {{VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1},
{0, 0, 0},
{VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1},
{0, 0, 0},
{width, height, 1}};
if (copyOnly) {
pTableCommandBuffer->CmdCopyImage(
data.commandBuffer, image1, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
data.image2, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1,
&imageCopyRegion);
} else {
VkImageBlit imageBlitRegion = {};
imageBlitRegion.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
imageBlitRegion.srcSubresource.baseArrayLayer = 0;
imageBlitRegion.srcSubresource.layerCount = 1;
imageBlitRegion.srcSubresource.mipLevel = 0;
imageBlitRegion.srcOffsets[1].x = width;
imageBlitRegion.srcOffsets[1].y = height;
imageBlitRegion.srcOffsets[1].z = 1;
imageBlitRegion.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
imageBlitRegion.dstSubresource.baseArrayLayer = 0;
imageBlitRegion.dstSubresource.layerCount = 1;
imageBlitRegion.dstSubresource.mipLevel = 0;
imageBlitRegion.dstOffsets[1].x = width;
imageBlitRegion.dstOffsets[1].y = height;
imageBlitRegion.dstOffsets[1].z = 1;
pTableCommandBuffer->CmdBlitImage(
data.commandBuffer, image1, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
data.image2, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1,
&imageBlitRegion, VK_FILTER_NEAREST);
if (need2steps) {
// image 3 needs to be transitioned from its undefined state to a
// transfer destination.
destMemoryBarrier.image = data.image3;
pTableCommandBuffer->CmdPipelineBarrier(
data.commandBuffer, srcStages, dstStages, 0, 0, NULL, 0, NULL,
1, &destMemoryBarrier);
// Transition image2 so that it can be read for the upcoming copy to
// image 3.
destMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
destMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
destMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
destMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
destMemoryBarrier.image = data.image2;
pTableCommandBuffer->CmdPipelineBarrier(
data.commandBuffer, srcStages, dstStages, 0, 0, NULL, 0, NULL,
1, &destMemoryBarrier);
// This step essentially untiles the image.
pTableCommandBuffer->CmdCopyImage(
data.commandBuffer, data.image2,
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, data.image3,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &imageCopyRegion);
generalMemoryBarrier.image = data.image3;
}
}
// The destination needs to be transitioned from the optimal copy format to
// the format we can read with the CPU.
pTableCommandBuffer->CmdPipelineBarrier(data.commandBuffer, srcStages,
dstStages, 0, 0, NULL, 0, NULL, 1,
&generalMemoryBarrier);
// Restore the swap chain image layout to what it was before.
// This may not be strictly needed, but it is generally good to restore
// things to original state.
presentMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
presentMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
presentMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
presentMemoryBarrier.dstAccessMask = 0;
pTableCommandBuffer->CmdPipelineBarrier(data.commandBuffer, srcStages,
dstStages, 0, 0, NULL, 0, NULL, 1,
&presentMemoryBarrier);
err = pTableCommandBuffer->EndCommandBuffer(data.commandBuffer);
assert(!err);
VkFence nullFence = {VK_NULL_HANDLE};
VkSubmitInfo submitInfo;
submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
submitInfo.pNext = NULL;
submitInfo.waitSemaphoreCount = 0;
submitInfo.pWaitSemaphores = NULL;
submitInfo.pWaitDstStageMask = NULL;
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &data.commandBuffer;
submitInfo.signalSemaphoreCount = 0;
submitInfo.pSignalSemaphores = NULL;
err = pTableQueue->QueueSubmit(queue, 1, &submitInfo, nullFence);
assert(!err);
err = pTableQueue->QueueWaitIdle(queue);
assert(!err);
err = pTableDevice->DeviceWaitIdle(device);
assert(!err);
// Map the final image so that the CPU can read it.
const VkImageSubresource sr = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 0};
VkSubresourceLayout srLayout;
const char *ptr;
if (!need2steps) {
pTableDevice->GetImageSubresourceLayout(device, data.image2, &sr,
&srLayout);
err = pTableDevice->MapMemory(device, data.mem2, 0, VK_WHOLE_SIZE, 0,
(void **)&ptr);
assert(!err);
if (VK_SUCCESS != err)
return;
data.mem2mapped = true;
} else {
pTableDevice->GetImageSubresourceLayout(device, data.image3, &sr,
&srLayout);
err = pTableDevice->MapMemory(device, data.mem3, 0, VK_WHOLE_SIZE, 0,
(void **)&ptr);
assert(!err);
if (VK_SUCCESS != err)
return;
data.mem3mapped = true;
}
// Write the data to a PPM file.
ofstream file(filename, ios::binary);
file << "P6\n";
file << width << "\n";
file << height << "\n";
file << 255 << "\n";
ptr += srLayout.offset;
if (3 == numChannels) {
for (uint32_t y = 0; y < height; y++) {
file.write(ptr, 3 * width);
ptr += srLayout.rowPitch;
}
} else if (4 == numChannels) {
for (uint32_t y = 0; y < height; y++) {
const unsigned int *row = (const unsigned int *)ptr;
for (uint32_t x = 0; x < width; x++) {
file.write((char *)row, 3);
row++;
}
ptr += srLayout.rowPitch;
}
}
file.close();
// Clean up handled by ~WritePPMCleanupData()
}
static void after_device_create(VkPhysicalDevice gpu, VkDevice device, layer_data *data) {
VkResult U_ASSERT_ONLY err;
data->gpu = gpu;
data->dev = device;
data->frame = 0;
data->cmdBuffersThisFrame = 0;
VkLayerDispatchTable *pTable = data->device_dispatch_table;
/* Get our WSI hooks in. */
data->pfnCreateSwapchainKHR = (PFN_vkCreateSwapchainKHR)pTable->GetDeviceProcAddr(device, "vkCreateSwapchainKHR");
data->pfnGetSwapchainImagesKHR = (PFN_vkGetSwapchainImagesKHR)pTable->GetDeviceProcAddr(device, "vkGetSwapchainImagesKHR");
data->pfnQueuePresentKHR = (PFN_vkQueuePresentKHR)pTable->GetDeviceProcAddr(device, "vkQueuePresentKHR");
data->pfnDestroySwapchainKHR = (PFN_vkDestroySwapchainKHR)pTable->GetDeviceProcAddr(device, "vkDestroySwapchainKHR");
data->swapChains = new std::unordered_map<VkSwapchainKHR, SwapChainData *>;
/* Command pool */
VkCommandPoolCreateInfo cpci;
cpci.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
cpci.pNext = nullptr;
cpci.queueFamilyIndex = data->graphicsQueueFamilyIndex;
cpci.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
err = pTable->CreateCommandPool(device, &cpci, nullptr, &data->pool);
assert(!err);
/* Create the objects we need */
/* Compile the shaders */
compile_shader(device, VULKAN_SAMPLES_BASE_DIR "/Layer-Samples/data/overlay-vert.spv", &data->vsShaderModule);
compile_shader(device, VULKAN_SAMPLES_BASE_DIR "/Layer-Samples/data/overlay-frag.spv", &data->fsShaderModule);
/* Upload the font bitmap */
VkImageCreateInfo ici;
memset(&ici, 0, sizeof(ici));
ici.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
ici.imageType = VK_IMAGE_TYPE_2D;
ici.format = VK_FORMAT_R8_UNORM;
ici.extent.width = FONT_ATLAS_SIZE;
ici.extent.height = FONT_ATLAS_SIZE;
ici.extent.depth = 1;
ici.mipLevels = 1;
ici.arrayLayers = 1;
ici.samples = VK_SAMPLE_COUNT_1_BIT;
ici.tiling = VK_IMAGE_TILING_LINEAR;
ici.usage = VK_IMAGE_USAGE_SAMPLED_BIT;
ici.initialLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
err = pTable->CreateImage(device, &ici, nullptr, &data->fontGlyphsImage);
assert(!err);
VkMemoryRequirements mem_reqs;
pTable->GetImageMemoryRequirements(device, data->fontGlyphsImage, &mem_reqs);
VkMemoryAllocateInfo mem_alloc;
memset(&mem_alloc, 0, sizeof(mem_alloc));
mem_alloc.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
mem_alloc.allocationSize = mem_reqs.size;
mem_alloc.memoryTypeIndex = choose_memory_type(gpu, mem_reqs.memoryTypeBits,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
err = pTable->AllocateMemory(device, &mem_alloc, nullptr, &data->fontGlyphsMemory);
assert(!err);
err = pTable->BindImageMemory(device, data->fontGlyphsImage, data->fontGlyphsMemory, 0);
assert(!err);
VkImageSubresource subres;
subres.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
subres.mipLevel = 0;
subres.arrayLayer = 0;
VkSubresourceLayout layout;
void *bits;
pTable->GetImageSubresourceLayout(device, data->fontGlyphsImage, &subres, &layout);
/* ensure we can directly upload into this layout */
assert(!layout.offset);
assert(layout.size >= FONT_ATLAS_SIZE * FONT_ATLAS_SIZE);
assert(layout.rowPitch == FONT_ATLAS_SIZE);
err = pTable->MapMemory(device, data->fontGlyphsMemory, 0, VK_WHOLE_SIZE, 0, &bits);
assert(!err);
/* Load the font glyphs directly into the mapped buffer */
std::vector<unsigned char> fontData;
get_file_contents(VULKAN_SAMPLES_BASE_DIR "/Layer-Samples/data/FreeSans.ttf", fontData);
stbtt_BakeFontBitmap(&fontData[0], 0, FONT_SIZE_PIXELS, (unsigned char *)bits, FONT_ATLAS_SIZE, FONT_ATLAS_SIZE, 32, 96,
data->glyphs);
pTable->UnmapMemory(device, data->fontGlyphsMemory);
VkImageViewCreateInfo ivci;
ivci.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
ivci.viewType = VK_IMAGE_VIEW_TYPE_2D;
ivci.pNext = nullptr;
ivci.format = ici.format;
ivci.components.r = VK_COMPONENT_SWIZZLE_R;
ivci.components.g = VK_COMPONENT_SWIZZLE_G;
ivci.components.b = VK_COMPONENT_SWIZZLE_B;
ivci.components.a = VK_COMPONENT_SWIZZLE_A;
ivci.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
ivci.subresourceRange.baseMipLevel = 0;
ivci.subresourceRange.levelCount = 1;
ivci.subresourceRange.baseArrayLayer = 0;
ivci.subresourceRange.layerCount = 1;
ivci.image = data->fontGlyphsImage;
ivci.flags = 0;
err = pTable->CreateImageView(device, &ivci, nullptr, &data->fontGlyphsImageView);
assert(!err);
/* transition from undefined layout to shader readonly so we can use it.
* requires a command buffer. */
VkCommandBufferAllocateInfo cbai;
cbai.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
cbai.pNext = nullptr;
cbai.commandPool = data->pool;
cbai.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
cbai.commandBufferCount = 1;
VkCommandBuffer cmd;
err = pTable->AllocateCommandBuffers(device, &cbai, &cmd);
assert(!err);
/* We have just created a dispatchable object, but the dispatch table has
* not been placed in the object yet.
* When a "normal" application creates a command buffer,
* the dispatch table is installed by the top-level binding (trampoline.c).
* But here, we have to do it ourselves. */
if (!data->pfn_dev_init) {
*((const void **)cmd) = *(void **)device;
} else {
err = data->pfn_dev_init(device, (void *)cmd);
assert(!err);
}
VkCommandBufferBeginInfo cbbi;
cbbi.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
cbbi.pNext = nullptr;
cbbi.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
cbbi.pInheritanceInfo = nullptr;
err = pTable->BeginCommandBuffer(cmd, &cbbi);
assert(!err);
VkImageMemoryBarrier imb;
imb.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
imb.pNext = nullptr;
imb.dstAccessMask = VK_ACCESS_HOST_WRITE_BIT | VK_ACCESS_TRANSFER_WRITE_BIT;
imb.srcAccessMask = 0;
imb.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
imb.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
imb.image = data->fontGlyphsImage;
imb.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
imb.subresourceRange.baseMipLevel = 0;
imb.subresourceRange.levelCount = 1;
imb.subresourceRange.baseArrayLayer = 0;
imb.subresourceRange.layerCount = 1;
imb.srcQueueFamilyIndex = data->graphicsQueueFamilyIndex;
imb.dstQueueFamilyIndex = data->graphicsQueueFamilyIndex;
pTable->CmdPipelineBarrier(cmd, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, 0 /* dependency flags */,
0, nullptr, /* memory barriers */
0, nullptr, /* buffer memory barriers */
1, &imb); /* image memory barriers */
pTable->EndCommandBuffer(cmd);
data->fontUploadCmdBuffer = cmd;
data->fontUploadComplete = false; /* we will schedule this at first present on this device */
#ifdef OVERLAY_DEBUG
printf("Font upload done.\n");
#endif
/* create a sampler to use with the texture */
VkSamplerCreateInfo sci;
sci.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
sci.pNext = nullptr;
sci.flags = 0;
sci.magFilter = VK_FILTER_NEAREST;
sci.minFilter = VK_FILTER_NEAREST;
sci.mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
sci.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
sci.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
sci.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
sci.mipLodBias = 0.0f;
sci.anisotropyEnable = false;
sci.maxAnisotropy = 1;
sci.compareEnable = false;
sci.compareOp = VK_COMPARE_OP_NEVER;
sci.minLod = 0.0f;
sci.maxLod = 0.0f;
sci.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
sci.unnormalizedCoordinates = VK_FALSE;
err = pTable->CreateSampler(device, &sci, nullptr, &data->sampler);
assert(!err);
/* descriptor set stuff so we can use the texture from a shader. */
VkDescriptorSetLayoutBinding dslb[1];
dslb[0].binding = 0;
dslb[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
dslb[0].descriptorCount = 1;
dslb[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
dslb[0].pImmutableSamplers = nullptr;
VkDescriptorSetLayoutCreateInfo dslci;
memset(&dslci, 0, sizeof(dslci));
dslci.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
dslci.pNext = nullptr;
dslci.bindingCount = 1;
dslci.pBindings = dslb;
err = pTable->CreateDescriptorSetLayout(device, &dslci, nullptr, &data->dsl);
assert(!err);
VkPipelineLayoutCreateInfo plci;
memset(&plci, 0, sizeof(plci));
plci.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
plci.setLayoutCount = 1;
plci.pSetLayouts = &data->dsl;
err = pTable->CreatePipelineLayout(device, &plci, nullptr, &data->pl);
assert(!err);
VkDescriptorPoolSize dtc[1];
dtc[0].type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
dtc[0].descriptorCount = 1;
VkDescriptorPoolCreateInfo dpci;
dpci.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
dpci.pNext = nullptr;
dpci.flags = 0;
dpci.maxSets = 1;
dpci.poolSizeCount = 1;
dpci.pPoolSizes = dtc;
err = pTable->CreateDescriptorPool(device, &dpci, nullptr, &data->desc_pool);
assert(!err);
VkDescriptorSetAllocateInfo dsai;
dsai.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
dsai.pNext = nullptr;
dsai.descriptorPool = data->desc_pool;
dsai.descriptorSetCount = 1;
dsai.pSetLayouts = &data->dsl;
err = pTable->AllocateDescriptorSets(device, &dsai, &data->desc_set);
assert(!err);
VkDescriptorImageInfo descs[1];
descs[0].sampler = data->sampler;
descs[0].imageView = data->fontGlyphsImageView;
descs[0].imageLayout = VK_IMAGE_LAYOUT_GENERAL; // TODO: cube does this, is it correct?
VkWriteDescriptorSet writes[1];
memset(&writes, 0, sizeof(writes));
writes[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writes[0].dstSet = data->desc_set;
writes[0].dstBinding = 0;
writes[0].descriptorCount = 1;
writes[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
writes[0].pImageInfo = descs;
pTable->UpdateDescriptorSets(device, 1, writes, 0, nullptr);
VkFenceCreateInfo fci;
fci.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
fci.pNext = NULL;
fci.flags = VK_FENCE_CREATE_SIGNALED_BIT;
pTable->CreateFence(device, &fci, NULL, &data->fence);
}