vulkan: first iteration for generic uniforms

Until now we only considered the builtin uniform variables.
This commit attempts to make the code in the vulkan Shader
implementation more general, as to allow for custom uniforms.
This is not possible yet, but should be easier to implement now.

src/modules/graphics/vulkan/Shader.h

@@ -6,9 +6,12 @@
 #include "Vulkan.h"
 
 #include <vulkan/vulkan.h>
+#include "libraries/spirv_cross/spirv_reflect.hpp"
 
 #include <map>
+#include <memory>
 #include <iostream>
+#include <unordered_map>
 
 
 namespace love {
@@ -26,7 +29,7 @@ public:
 
 	const VkPipelineLayout getGraphicsPipelineLayout() const;
 
-	void cmdPushDescriptorSets(VkCommandBuffer, uint32_t currentImage);
+	void cmdPushDescriptorSets(VkCommandBuffer, uint32_t currentFrame);
 
 	void attach() override;
 
@@ -58,6 +61,11 @@ private:
 	void createDescriptorSetLayout();
 	void createPipelineLayout();
 	void createStreamBuffers();
+	void buildLocalUniforms(
+		spirv_cross::Compiler& comp, 
+		const spirv_cross::SPIRType& type, 
+		size_t baseoff, 
+		const std::string& basename);
 
 	VkDeviceSize uniformBufferSizeAligned;
 	PFN_vkCmdPushDescriptorSetKHR vkCmdPushDescriptorSet;
@@ -75,27 +83,18 @@ private:
 	Graphics* gfx;
 	VkDevice device;
 
-	std::map<std::string, int> vertexAttributeIndices = {
-		{ "VertexPosition", 0 },
-		{ "VertexTexCoord", 1 },
-		{ "VertexColor", 2 }
-	};
+	std::unordered_map<std::string, graphics::Shader::UniformInfo> uniformInfos;
+	UniformInfo* builtinUniformInfo[BUILTIN_MAX_ENUM];
 
-	std::map<std::string, int> uniformBindings = {
-		{ "love_UniformsPerDraw", 0 },
-		{ "love_VideoYChannel", 1 },
-		{ "love_VideoCbChannel", 2 },
-		{ "love_VideoCrChannel", 3 },
-		{ "MainTex", 4 }
-	};
+	std::unique_ptr<StreamBuffer> uniformBufferObjectBuffer;
+	std::vector<uint8> localUniformStagingData;
+	size_t builtinUniformDataOffset;
 
-	BuiltinUniformData uniformData;
-	graphics::Texture* mainTex;
 	graphics::Texture* ytexture;
 	graphics::Texture* cbtexture;
 	graphics::Texture* crtexture;
 
-	uint32_t currentImage;
+	uint32_t currentFrame;
 	// todo: give this variable a better name
 	uint32_t count;
 };