feat(ApiVk): added basic triangle sample

Author: tomezpl

CMakeLists.txt

@@ -141,7 +141,8 @@ elseif (OpenGL::OpenGL)
     set(GL_LIBRARY OpenGL::OpenGL)
 endif (OpenGL::GL)
 
-target_link_libraries(LepusGfx PRIVATE GL3W glfw ${GL_LIBRARY} vk-bootstrap::vk-bootstrap DearImgui LepusEngine LepusUtility LepusSystem Vulkan::Vulkan)
+find_package(VulkanMemoryAllocator CONFIG REQUIRED)
+target_link_libraries(LepusGfx PRIVATE GL3W glfw ${GL_LIBRARY} vk-bootstrap::vk-bootstrap GPUOpen::VulkanMemoryAllocator DearImgui LepusEngine LepusUtility LepusSystem Vulkan::Vulkan)
 
 target_include_directories(LepusGfx PUBLIC "${Vulkan_INCLUDE_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/_deps/fetch_vk_bootstrap-src/src")
 target_link_libraries(LepusDemo PRIVATE DearImgui LepusGfx LepusUtility LepusEngine)

Content/GLSL/Unlit/RGBVertex.frag

@@ -1,7 +1,7 @@
-#version 330 core
+#version 430 core
 
-out vec4 color;
-in vec3 vertColor;
+layout(location = 0) out vec4 color;
+layout(location = 0) in vec3 vertColor;
 
 void main()
 {

Content/GLSL/Unlit/RGBVertex.vert

@@ -1,18 +1,21 @@
-#version 330 core
+#version 430 core
 
 layout (location = 0) in vec3 position;
 
-uniform mat4 PROJ;
-uniform mat4 VIEW;
-uniform mat4 MODEL;
+layout(push_constant, std430) uniform pc
+{
+	mat4 PROJ;
+	mat4 VIEW;
+	mat4 MODEL;
+};
 
-out vec3 vertColor;
+layout(location = 0) out vec3 vertColor;
 
 void main()
 {
 	gl_Position = PROJ * VIEW * MODEL * vec4(position, 1.0);
 
-	float normalisedIndex = mod(float(gl_VertexID), 3.0f);
+	float normalisedIndex = mod(float(gl_VertexIndex), 3.0f);
 	float r = step(normalisedIndex, 0.0f);
 	float g = step(normalisedIndex, 1.0f);
 	float b = step(normalisedIndex, 2.0f);

src/lepus/gfx/GraphicsEngine/Apis/ApiVk.h

@@ -5,6 +5,7 @@
 
 #define VK_USE_PLATFORM_WIN32_KHR
 #include <VkBootstrap.h>
+#include <vma/vk_mem_alloc.h>
 
 #include "lepus/system/Windowing/GLFW.h"
 
@@ -44,6 +45,13 @@ namespace lepus
 	    VkFence m_vkFence, m_vkCmdBufFence;
 	    PFN_vkCmdBeginRenderingKHR vkCmdBeginRenderingKHR;
 	    PFN_vkCmdEndRenderingKHR vkCmdEndRenderingKHR;
+	    VkPipeline m_vkGraphicsPipeline;
+	    VkPipelineLayout m_vkGraphicsPipelineLayout;
+	    VkShaderModule m_vkVertShader, m_vkFragShader;
+	    VkBuffer m_vkVertBuffer;
+	    VkDeviceMemory m_vkMemory;
+	    VmaAllocator m_vmaAllocator;
+	    VmaAllocation m_vmaAllocation;
 
 	    inline void* GetUniformInternal(const char* name) override
 	    {
@@ -62,6 +70,14 @@ namespace lepus
 		m_Images = nullptr;
 		m_vkFence = VK_NULL_HANDLE;
 		m_vkCmdBufFence = VK_NULL_HANDLE;
+		m_vkGraphicsPipeline = VK_NULL_HANDLE;
+		m_vkGraphicsPipelineLayout = VK_NULL_HANDLE;
+		m_vkVertShader = VK_NULL_HANDLE;
+		m_vkFragShader = VK_NULL_HANDLE;
+		m_vkVertBuffer = VK_NULL_HANDLE;
+		m_vkMemory = VK_NULL_HANDLE;
+		m_vmaAllocator = VK_NULL_HANDLE;
+		m_vmaAllocation = VK_NULL_HANDLE;
 	    }
 
 	    GraphicsApiVk(GraphicsApiOptions* options)
@@ -74,6 +90,9 @@ namespace lepus
 		m_Images = nullptr;
 		m_vkFence = VK_NULL_HANDLE;
 		m_vkCmdBufFence = VK_NULL_HANDLE;
+		m_vkGraphicsPipeline = VK_NULL_HANDLE;
+		m_vkVertShader = VK_NULL_HANDLE;
+		m_vkFragShader = VK_NULL_HANDLE;
 		GraphicsApiVk::Init(options);
 	    }