Renderer: Add ShaderStage class

src/Nazara/Renderer/RenderDevice.cpp

@@ -3,9 +3,32 @@
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
 #include <Nazara/Renderer/RenderDevice.hpp>
+#include <Nazara/Core/Error.hpp>
+#include <Nazara/Core/File.hpp>
 #include <Nazara/Renderer/Debug.hpp>
 
 namespace Nz
 {
 	RenderDevice::~RenderDevice() = default;
+
+	std::shared_ptr<ShaderStageImpl> RenderDevice::InstantiateShaderStage(ShaderStageType type, ShaderLanguage lang, const std::filesystem::path& sourcePath)
+	{
+		File file(sourcePath);
+		if (!file.Open(OpenMode_ReadOnly | OpenMode_Text))
+		{
+			NazaraError("Failed to open \"" + sourcePath.generic_u8string() + '"');
+			return {};
+		}
+
+		std::size_t length = static_cast<std::size_t>(file.GetSize());
+
+		std::vector<Nz::UInt8> source(length);
+		if (file.Read(&source[0], length) != length)
+		{
+			NazaraError("Failed to read program file");
+			return {};
+		}
+
+		return InstantiateShaderStage(type, lang, source.data(), source.size());
+	}
 }

src/Nazara/Renderer/ShaderStageImpl.cpp

@@ -0,0 +1,11 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Renderer module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Renderer/ShaderStageImpl.hpp>
+#include <Nazara/Renderer/Debug.hpp>
+
+namespace Nz
+{
+	ShaderStageImpl::~ShaderStageImpl() = default;
+}

src/Nazara/VulkanRenderer/VulkanDevice.cpp

@@ -4,6 +4,7 @@
 
 #include <Nazara/VulkanRenderer/VulkanDevice.hpp>
 #include <Nazara/VulkanRenderer/VulkanRenderPipeline.hpp>
+#include <Nazara/VulkanRenderer/VulkanShaderStage.hpp>
 #include <Nazara/VulkanRenderer/Debug.hpp>
 
 namespace Nz
@@ -19,4 +20,13 @@ namespace Nz
 	{
 		return std::make_unique<VulkanRenderPipeline>(shared_from_this(), std::move(pipelineInfo));
 	}
+
+	std::shared_ptr<ShaderStageImpl> VulkanDevice::InstantiateShaderStage(ShaderStageType type, ShaderLanguage lang, const void* source, std::size_t sourceSize)
+	{
+		auto stage = std::make_shared<VulkanShaderStage>();
+		if (!stage->Create(shared_from_this(), type, lang, source, sourceSize))
+			return {};
+
+		return stage;
+	}
 }

src/Nazara/VulkanRenderer/VulkanShaderStage.cpp

@@ -0,0 +1,27 @@
+// Copyright (C) 2016 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Vulkan Renderer"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/VulkanRenderer/VulkanShaderStage.hpp>
+#include <Nazara/VulkanRenderer/Debug.hpp>
+
+namespace Nz
+{
+	bool VulkanShaderStage::Create(const Vk::DeviceHandle& device, ShaderStageType type, ShaderLanguage lang, const void* source, std::size_t sourceSize)
+	{
+		if (lang != ShaderLanguage::SpirV)
+		{
+			NazaraError("Only Spir-V is supported for now");
+			return false;
+		}
+
+		if (!m_shaderModule.Create(device, reinterpret_cast<const Nz::UInt32*>(source), sourceSize))
+		{
+			NazaraError("Failed to create shader module");
+			return false;
+		}
+
+		m_stage = type;
+		return true;
+	}
+}