glm::vec3 VKTS_APIENTRY renderLambert(const IImageDataSP& cubeMap, const VkFilter filter, const uint32_t mipLevel, const glm::vec2& randomPoint, const glm::mat3& basis)
{
if (!cubeMap.get() || cubeMap->getArrayLayers() != 6)
{
return glm::vec3(0.0f, 0.0f, 0.0f);
}
glm::vec3 LtangentSpace = renderGetCosineWeightedVector(randomPoint);
// Transform light ray to world space.
glm::vec3 L = basis * LtangentSpace;
return glm::vec3(cubeMap->getSampleCubeMap(L.x, L.y, L.z, filter, mipLevel));
}
glm::vec3 VKTS_APIENTRY renderCookTorrance(const IImageDataSP& cubeMap, const VkFilter filter, const uint32_t mipLevel, const glm::vec2& randomPoint, const glm::mat3& basis, const glm::vec3& N, const glm::vec3& V, const float roughness)
{
if (!cubeMap.get() || cubeMap->getArrayLayers() != 6)
{
return glm::vec3(0.0f, 0.0f, 0.0f);
}
glm::vec3 HtangentSpace = renderGetGGXWeightedVector(randomPoint, roughness);
// Transform H to world space.
glm::vec3 H = basis * HtangentSpace;
// Note: reflect takes incident vector.
glm::vec3 L = glm::reflect(-V, H);
return glm::vec3(cubeMap->getSampleCubeMap(L.x, L.y, L.z, filter, mipLevel));
}
glm::vec3 VKTS_APIENTRY renderOrenNayar(const IImageDataSP& cubeMap, const VkFilter filter, const uint32_t mipLevel, const glm::vec2& randomPoint, const glm::mat3& basis, const glm::vec3& N, const glm::vec3& V, const float roughness)
{
if (!cubeMap.get() || cubeMap->getArrayLayers() != 6)
{
return glm::vec3(0.0f, 0.0f, 0.0f);
}
glm::vec3 LtangentSpace = renderGetCosineWeightedVector(randomPoint);
// Transform light ray to world space.
glm::vec3 L = basis * LtangentSpace;
float NdotL = glm::dot(N, L);
float NdotV = glm::dot(N, V);
float angleVN = acosf(NdotV);
float angleLN = acosf(NdotL);
float alpha = glm::max(angleVN, angleLN);
float beta = glm::min(angleVN, angleLN);
float gamma = glm::dot(V - N * NdotV, L - N * NdotL);
float roughnessSquared = roughness * roughness;
float A = 1.0f - 0.5f * (roughnessSquared / (roughnessSquared + 0.57f));
float B = 0.45f * (roughnessSquared / (roughnessSquared + 0.09f));
float C = sinf(alpha) * tanf(beta);
float Lr = glm::max(0.0f, NdotL) * (A + B * glm::max(0.0f, gamma) * C);
return glm::vec3(cubeMap->getSampleCubeMap(L.x, L.y, L.z, filter, mipLevel)) * Lr;
}
SmartPointerVector<IImageDataSP> VKTS_APIENTRY imageDataCubemap(const IImageDataSP& sourceImage, const std::string& name)
{
if (name.size() == 0 || !sourceImage.get())
{
return SmartPointerVector<IImageDataSP>();
}
std::string sourceImageFilename = name;
auto dotIndex = sourceImageFilename.rfind(".");
if (dotIndex == sourceImageFilename.npos)
{
return SmartPointerVector<IImageDataSP>();
}
auto sourceImageName = sourceImageFilename.substr(0, dotIndex);
auto sourceImageExtension = sourceImageFilename.substr(dotIndex);
// TODO: Implement.
return SmartPointerVector<IImageDataSP>();
}
IMemoryImageSP VKTS_APIENTRY memoryImageCreate(IImageSP& stageImage, IBufferSP& stageBuffer, IDeviceMemorySP& stageDeviceMemory, const IInitialResourcesSP& initialResources, const ICommandBuffersSP& cmdBuffer, const std::string& name, const IImageDataSP& imageData, const VkImageCreateInfo& imageCreateInfo, const VkAccessFlags srcAccessMask, const VkAccessFlags dstAccessMask, const VkImageLayout newLayout, const VkImageSubresourceRange& subresourceRange, const VkMemoryPropertyFlags memoryPropertyFlags)
{
if (!cmdBuffer || !imageData.get())
{
return IMemoryImageSP();
}
VkResult result;
//
IImageSP image;
IDeviceMemorySP deviceMemory;
//
if (!memoryImagePrepare(image, deviceMemory, initialResources, cmdBuffer, imageCreateInfo, srcAccessMask, dstAccessMask, newLayout, subresourceRange, memoryPropertyFlags))
{
return IMemoryImageSP();
}
//
if (memoryPropertyFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT)
{
for (uint32_t i = 0; i < imageData->getMipLevels(); i++)
{
VkImageSubresource imageSubresource;
imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
imageSubresource.mipLevel = i;
imageSubresource.arrayLayer = 0;
VkSubresourceLayout subresourceLayout;
image->getImageSubresourceLayout(subresourceLayout, imageSubresource);
if (!memoryImageUpload(deviceMemory, imageData, i, subresourceLayout))
{
logPrint(VKTS_LOG_ERROR, "MemoryImage: Could not upload image data.");
return IMemoryImageSP();
}
}
}
else
{
if (initialResources->getPhysicalDevice()->isImageTilingAvailable(VK_IMAGE_TILING_LINEAR, imageData->getFormat(), imageData->getImageType(), 0, imageData->getExtent3D(), imageData->getMipLevels(), 1, VK_SAMPLE_COUNT_1_BIT, imageData->getSize()))
{
VkImageCreateInfo stageImageCreateInfo;
memcpy(&stageImageCreateInfo, &imageCreateInfo, sizeof(VkImageCreateInfo));
stageImageCreateInfo.tiling = VK_IMAGE_TILING_LINEAR;
stageImageCreateInfo.usage = VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
stageImageCreateInfo.initialLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
if (!memoryImagePrepare(stageImage, stageDeviceMemory, initialResources, cmdBuffer, stageImageCreateInfo, VK_ACCESS_HOST_WRITE_BIT, VK_ACCESS_TRANSFER_READ_BIT, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, subresourceRange, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT))
{
logPrint(VKTS_LOG_ERROR, "MemoryImage: Could not prepare staging image.");
return IMemoryImageSP();
}
for (uint32_t i = 0; i < imageData->getMipLevels(); i++)
{
VkImageSubresource imageSubresource;
imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
imageSubresource.mipLevel = i;
imageSubresource.arrayLayer = 0;
VkSubresourceLayout subresourceLayout;
stageImage->getImageSubresourceLayout(subresourceLayout, imageSubresource);
if (!memoryImageUpload(stageDeviceMemory, imageData, i, subresourceLayout))
{
logPrint(VKTS_LOG_ERROR, "MemoryImage: Could not upload image data.");
return IMemoryImageSP();
}
VkImageCopy imageCopy;
imageCopy.srcSubresource = {VK_IMAGE_ASPECT_COLOR_BIT, i, 0, 1};
imageCopy.srcOffset = {0, 0, 0};
imageCopy.dstSubresource = {VK_IMAGE_ASPECT_COLOR_BIT, i, 0, 1};
imageCopy.dstOffset = {0, 0, 0};
imageCopy.extent = {glm::max(imageData->getWidth() >> i, 1u), glm::max(imageData->getHeight() >> i, 1u), glm::max(imageData->getDepth() >> i, 1u)};
stageImage->copyImage(cmdBuffer->getCommandBuffer(), image, imageCopy);
}
}
SmartPointerVector<IImageDataSP> VKTS_APIENTRY imageDataMipmap(const IImageDataSP& sourceImage, VkBool32 addSourceAsCopy, const std::string& name)
{
if (name.size() == 0 || !sourceImage.get())
{
return SmartPointerVector<IImageDataSP>();
}
std::string sourceImageFilename = name;
auto dotIndex = sourceImageFilename.rfind(".");
if (dotIndex == sourceImageFilename.npos)
{
return SmartPointerVector<IImageDataSP>();
}
auto sourceImageName = sourceImageFilename.substr(0, dotIndex);
auto sourceImageExtension = sourceImageFilename.substr(dotIndex);
IImageDataSP currentSourceImage = sourceImage;
int32_t width = currentSourceImage->getWidth();
int32_t height = currentSourceImage->getHeight();
int32_t depth = currentSourceImage->getDepth();
IImageDataSP currentTargetImage;
std::string targetImageFilename;
int32_t level = 0;
SmartPointerVector<IImageDataSP> result;
if (addSourceAsCopy)
{
targetImageFilename = sourceImageName + "_L" + std::to_string(level++) + sourceImageExtension;
currentTargetImage = imageDataCopy(sourceImage, targetImageFilename);
if (!currentTargetImage.get())
{
return SmartPointerVector<IImageDataSP>();
}
result.append(currentTargetImage);
}
else
{
result.append(sourceImage);
level++;
}
while (width > 1 || height > 1 || depth > 1)
{
width = glm::max(width / 2, 1);
height = glm::max(height / 2, 1);
depth = glm::max(depth / 2, 1);
targetImageFilename = sourceImageName + "_L" + std::to_string(level++) + sourceImageExtension;
currentTargetImage = imageDataCreate(targetImageFilename, width, height, depth, 0.0f, 0.0f, 0.0f, 0.0f, sourceImage->getImageType(), sourceImage->getFormat());
if (!currentTargetImage.get())
{
return SmartPointerVector<IImageDataSP>();
}
for (int32_t z = 0; z < depth; z++)
{
for (int32_t y = 0; y < height; y++)
{
for (int32_t x = 0; x < width; x++)
{
glm::vec4 rgba = glm::vec4(0.0f, 0.0f, 0.0f, 0.0f);
float sampleCount = 0.0f;
for (int32_t iz = z * 2; iz < z * 2 + 1; iz++)
{
for (int32_t iy = y * 2; iy < y * 2 + 1; iy++)
{
for (int32_t ix = x * 2; ix < x * 2 + 1; ix++)
{
rgba += currentSourceImage->getTexel(ix, iy, iz);
sampleCount += 1.0f;
}
}
}
if (sampleCount > 0.0f)
{
rgba /= sampleCount;
currentTargetImage->setTexel(rgba, x, y, z);
}
}
}
}
result.append(currentTargetImage);
//
currentSourceImage = currentTargetImage;
width = currentSourceImage->getWidth();
height = currentSourceImage->getHeight();
depth = currentSourceImage->getDepth();
}
return result;
}
FontCacheEntry* FreeTypeFont::getGlyph(const char32_t character, const size_t size)
{
if (!face)
{
return nullptr;
}
//
auto results = cache.find(character);
while (results != cache.cend())
{
if (results->second.size == size)
{
return &results->second;
}
results++;
}
//
if (FT_Set_Char_Size(face, VKTS_TO_CHAR_SIZE(size), VKTS_TO_CHAR_SIZE(size), 0, 0))
{
return nullptr;
}
auto glyphIndex = FT_Get_Char_Index(face, character);
if (FT_Load_Glyph(face, glyphIndex, FT_LOAD_DEFAULT))
{
return nullptr;
}
if (FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL))
{
return nullptr;
}
//
IImageDataSP glyphImageData;
if (face->glyph->bitmap.buffer)
{
glyphImageData = imageDataCreate("FontCharacterImageData", face->glyph->bitmap.width, face->glyph->bitmap.rows, 1, VK_IMAGE_TYPE_2D, VK_FORMAT_R8_UNORM);
if (!glyphImageData.get())
{
return nullptr;
}
VkSubresourceLayout subresourceLayout;
subresourceLayout.offset = 0;
subresourceLayout.size = face->glyph->bitmap.width * face->glyph->bitmap.rows;
subresourceLayout.rowPitch = face->glyph->bitmap.width;
subresourceLayout.arrayPitch = 0;
subresourceLayout.depthPitch = 0;
if (!glyphImageData->upload(face->glyph->bitmap.buffer, 0, subresourceLayout))
{
return nullptr;
}
}
else
{
// For space, no data is created.
glyphImageData = imageDataCreate("FontCharacterImageData", 1, 1, 1, 0.0f, 0.0f, 0.0f, 0.0f, VK_IMAGE_TYPE_2D, VK_FORMAT_R8_UNORM);
if (!glyphImageData.get())
{
return nullptr;
}
}
//
FontCacheEntry fontCacheEntry;
fontCacheEntry.character = character;
fontCacheEntry.size = size;
fontCacheEntry.width = face->glyph->bitmap.width;
fontCacheEntry.height = face->glyph->bitmap.rows;
fontCacheEntry.advanceX = VKTS_FROM_CHAR_SIZE(face->glyph->advance.x);
fontCacheEntry.advanceY = VKTS_FROM_CHAR_SIZE(face->glyph->advance.y);
fontCacheEntry.offsetX = VKTS_FROM_CHAR_SIZE(face->glyph->metrics.vertBearingX - face->glyph->metrics.width);
fontCacheEntry.offsetY = VKTS_FROM_CHAR_SIZE(face->glyph->metrics.horiBearingY - face->glyph->metrics.height);
fontCacheEntry.glyphImageData = glyphImageData;
fontCacheEntry.texture = ITextureSP();
cache.insert(std::make_pair(character, fontCacheEntry));
//
results = cache.find(character);
while (results != cache.cend())
{
if (results->second.size == size)
{
return &results->second;
}
results++;
}
return nullptr;
}