Asset+Component+Render: Render quads in the world as 3D objects

src/inferno/component/model-component.cpp

@@ -8,6 +8,7 @@
 #include "inferno/asset/asset-manager.h"
 #include "inferno/asset/model.h"
 #include "inferno/asset/texture.h"
+#include "inferno/component/spritecomponent.h" // TODO: Move glm::x toJson/fromJson to separate file
 
 namespace Inferno {
 
@@ -15,6 +16,9 @@ void fromJson(const ruc::Json& json, ModelComponent& value)
 {
 	VERIFY(json.type() == ruc::Json::Type::Object);
 
+	if (json.exists("color")) {
+		json.at("color").getTo(value.color);
+	}
 	if (json.exists("model") && json.at("model").type() == ruc::Json::Type::String) {
 		value.model = AssetManager::the().load<Model>(json.at("model").asString());
 	}

src/inferno/component/model-component.h

@@ -16,6 +16,7 @@
 namespace Inferno {
 
 struct ModelComponent {
+	glm::vec4 color { 1.0f };
 	std::shared_ptr<Model> model;
 	std::shared_ptr<Texture2D> texture;
 };

src/inferno/render/renderer.cpp

@@ -8,6 +8,7 @@
 #include <span>
 
 #include "glad/glad.h"
+#include "glm/ext/vector_float4.hpp" // glm::vec4
 #include "ruc/format/log.h"
 
 #include "inferno/asset/asset-manager.h"
@@ -274,7 +275,7 @@ void Renderer2D::drawQuad(const TransformComponent& transform, glm::mat4 color,
 
 void Renderer2D::loadShader()
 {
-	m_shader = AssetManager::the().load<Shader>("assets/glsl/batch-quad");
+	m_shader = AssetManager::the().load<Shader>("assets/glsl/batch-2d");
 }
 
 // -----------------------------------------
@@ -487,6 +488,7 @@ Renderer3D::Renderer3D(s)
 	vertexBuffer->setLayout({
 		{ BufferElementType::Vec3, "a_position" },
 		{ BufferElementType::Vec3, "a_normal" },
+		{ BufferElementType::Vec4, "a_color" },
 		{ BufferElementType::Vec2, "a_textureCoordinates" },
 		{ BufferElementType::Uint, "a_textureIndex" },
 	});
@@ -495,7 +497,7 @@ Renderer3D::Renderer3D(s)
 	ruc::info("Renderer3D initialized");
 }
 
-void Renderer3D::drawModel(std::span<const Vertex> vertices, std::span<const uint32_t> elements, const TransformComponent& transform, std::shared_ptr<Texture> texture)
+void Renderer3D::drawModel(std::span<const Vertex> vertices, std::span<const uint32_t> elements, const TransformComponent& transform, glm::vec4 color, std::shared_ptr<Texture> texture)
 {
 	// ruc::error("drawModel");
 
@@ -513,6 +515,7 @@ void Renderer3D::drawModel(std::span<const Vertex> vertices, std::span<const uin
 	for (const auto& vertex : vertices) {
 		m_vertexBufferPtr->position = transform.transform * glm::vec4(vertex.position, 1.0f);
 		m_vertexBufferPtr->normal = vertex.normal;
+		m_vertexBufferPtr->color = color;
 		m_vertexBufferPtr->textureCoordinates = vertex.textureCoordinates;
 		m_vertexBufferPtr->textureIndex = textureUnitIndex;
 		m_vertexBufferPtr++;

src/inferno/render/renderer.h

@@ -24,16 +24,16 @@ class TransformComponent;
 class VertexArray;
 
 struct QuadVertex {
-	glm::vec3 position { 0.0f, 0.0f, 0.0f };
-	glm::vec4 color { 1.0f, 1.0f, 1.0f, 1.0f };
-	glm::vec2 textureCoordinates { 0.0f, 0.0f };
-	uint32_t textureIndex = 0;
+	glm::vec3 position { 0.0f };
+	glm::vec4 color { 1.0f };
+	glm::vec2 textureCoordinates { 0.0f };
+	uint32_t textureIndex { 0 };
 };
 
 struct CubemapVertex {
-	glm::vec3 position { 0.0f, 0.0f, 0.0f };
-	glm::vec4 color { 1.0f, 1.0f, 1.0f, 1.0f };
-	uint32_t textureIndex = 0;
+	glm::vec3 position { 0.0f };
+	glm::vec4 color { 1.0f };
+	uint32_t textureIndex { 0 };
 };
 
 struct SymbolVertex {
@@ -45,16 +45,17 @@ struct SymbolVertex {
 	// Outline
 	float borderWidth = 0.7f;
 	float borderEdge = 0.1f;
-	glm::vec4 borderColor { 1.0f, 1.0f, 1.0f, 1.0f };
+	glm::vec4 borderColor { 1.0f };
 	// Dropshadow
 	float offset = 0.0f;
 };
 
 struct Vertex {
-	glm::vec3 position { 0.0f, 0.0f, 0.0f };
-	glm::vec3 normal { 1.0f, 1.0f, 1.0f };
-	glm::vec2 textureCoordinates { 0.0f, 0.0f };
-	uint32_t textureIndex = 0;
+	glm::vec3 position { 0.0f };
+	glm::vec3 normal { 1.0f };
+	glm::vec4 color { 1.0f };
+	glm::vec2 textureCoordinates { 0.0f };
+	uint32_t textureIndex { 0 };
 };
 
 // -------------------------------------
@@ -197,7 +198,7 @@ public:
 
 	using Singleton<Renderer3D>::destroy;
 
-	void drawModel(std::span<const Vertex> vertices, std::span<const uint32_t> indices, const TransformComponent& transform, std::shared_ptr<Texture> texture);
+	void drawModel(std::span<const Vertex> vertices, std::span<const uint32_t> indices, const TransformComponent& transform, glm::vec4 color, std::shared_ptr<Texture> texture);
 
 private:
 	void createElementBuffer() override;

src/inferno/system/rendersystem.cpp

@@ -46,6 +46,7 @@ void RenderSystem::render()
 		Renderer3D::the().drawModel(model.model->vertices(),
 		                            model.model->elements(),
 		                            transform,
+		                            model.color,
 		                            model.model->texture() ? model.model->texture() : model.texture);
 	}
 }