Render: Add support for int/double shader attributes

assets/glsl/batch-3d.frag

@@ -4,14 +4,14 @@ layout(location = 0) out vec4 color;
 
 in vec3 v_normal;
 in vec2 v_textureCoordinates;
-in flat float v_textureIndex;
+in flat uint v_textureIndex;
 
 uniform sampler2D u_textures[32];
 
 void main()
 {
 	vec4 textureColor = vec4(1.0f);
-	switch(int(v_textureIndex)) {
+	switch(v_textureIndex) {
 		case 0:  break; // Texture unit 0 is reserved for no texture
 		case 1:  textureColor *= texture(u_textures[1],  v_textureCoordinates); break;
 		case 2:  textureColor *= texture(u_textures[2],  v_textureCoordinates); break;

assets/glsl/batch-3d.vert

@@ -3,11 +3,11 @@
 layout(location = 0) in vec3 a_position;
 layout(location = 1) in vec3 a_normal;
 layout(location = 2) in vec2 a_textureCoordinates;
-layout(location = 3) in float a_textureIndex;
+layout(location = 3) in uint a_textureIndex;
 
 out vec3 v_normal;
 out vec2 v_textureCoordinates;
-out flat float v_textureIndex;
+out flat uint v_textureIndex;
 
 uniform mat4 u_projectionView;
 

assets/glsl/batch-cubemap.frag

@@ -4,14 +4,14 @@ layout(location = 0) out vec4 color;
 
 in vec4 v_color;
 in vec3 v_textureCoordinates;
-in flat float v_textureIndex;
+in flat uint v_textureIndex;
 
 uniform samplerCube u_textures[32];
 
 void main()
 {
 	vec4 textureColor = v_color;
-	switch(int(v_textureIndex)) {
+	switch(v_textureIndex) {
 		case 0:  break; // Texture unit 0 is reserved for no texture
 		case 1:  textureColor *= texture(u_textures[1],  v_textureCoordinates); break;
 		case 2:  textureColor *= texture(u_textures[2],  v_textureCoordinates); break;

assets/glsl/batch-cubemap.vert

@@ -2,11 +2,11 @@
 
 layout(location = 0) in vec3 a_position;
 layout(location = 1) in vec4 a_color;
-layout(location = 2) in float a_textureIndex;
+layout(location = 2) in uint a_textureIndex;
 
 out vec4 v_color;
 out vec3 v_textureCoordinates;
-out flat float v_textureIndex;
+out flat uint v_textureIndex;
 
 uniform mat4 u_projectionView;
 

assets/glsl/batch-font.frag

@@ -4,7 +4,7 @@ layout(location = 0) out vec4 color;
 
 in vec4 v_color;
 in vec2 v_textureCoordinates;
-in flat float v_textureIndex;
+in flat uint v_textureIndex;
 in float v_width;
 in float v_edge;
 in float v_borderWidth;
@@ -25,7 +25,7 @@ float alpha(float textureAlpha)
 void main()
 {
 	vec4 textureColor = v_color;
-	switch(int(v_textureIndex)) {
+	switch(v_textureIndex) {
 		case 0:  break; // Texture unit 0 is reserved for no texture
 		// case 1: textureColor.a = 1; break;
 		case 1:  textureColor.a = alpha(texture(u_textures[1], v_textureCoordinates).a); break;

assets/glsl/batch-font.vert

@@ -3,7 +3,7 @@
 layout(location = 0) in vec3 a_position;
 layout(location = 1) in vec4 a_color;
 layout(location = 2) in vec2 a_textureCoordinates;
-layout(location = 3) in float a_textureIndex;
+layout(location = 3) in uint a_textureIndex;
 layout(location = 4) in float a_width;
 layout(location = 5) in float a_edge;
 layout(location = 6) in float a_borderWidth;
@@ -13,7 +13,7 @@ layout(location = 9) in float a_offset;
 
 out vec4 v_color;
 out vec2 v_textureCoordinates;
-out flat float v_textureIndex;
+out flat uint v_textureIndex;
 out float v_width;
 out float v_edge;
 out float v_borderWidth;

assets/glsl/batch-quad.frag

@@ -4,14 +4,14 @@ layout(location = 0) out vec4 color;
 
 in vec4 v_color;
 in vec2 v_textureCoordinates;
-in flat float v_textureIndex;
+in flat uint v_textureIndex;
 
 uniform sampler2D u_textures[32];
 
 void main()
 {
 	vec4 textureColor = v_color;
-	switch(int(v_textureIndex)) {
+	switch(v_textureIndex) {
 		case 0:  break; // Texture unit 0 is reserved for no texture
 		case 1:  textureColor *= texture(u_textures[1],  v_textureCoordinates); break;
 		case 2:  textureColor *= texture(u_textures[2],  v_textureCoordinates); break;

assets/glsl/batch-quad.vert

@@ -3,11 +3,11 @@
 layout(location = 0) in vec3 a_position;
 layout(location = 1) in vec4 a_color;
 layout(location = 2) in vec2 a_textureCoordinates;
-layout(location = 3) in float a_textureIndex;
+layout(location = 3) in uint a_textureIndex;
 
 out vec4 v_color;
 out vec2 v_textureCoordinates;
-out flat float v_textureIndex;
+out flat uint v_textureIndex;
 
 uniform mat4 u_projectionView;
 

src/inferno/render/buffer.cpp

@@ -306,13 +306,63 @@ void VertexArray::addVertexBuffer(std::shared_ptr<VertexBuffer> vertexBuffer)
 	uint32_t index = 0;
 	for (const auto& element : layout) {
 		glEnableVertexAttribArray(index);
-		glVertexAttribPointer(
-			index,
-			element.getTypeCount(),
-			element.getTypeGL(),
-			element.getNormalized() ? GL_TRUE : GL_FALSE,
-			layout.getStride(),
-			reinterpret_cast<const void*>(element.getOffset()));
+		switch (element.getType()) {
+		case BufferElementType::None:
+			break;
+		case BufferElementType::Int:
+		case BufferElementType::Int2:
+		case BufferElementType::Int3:
+		case BufferElementType::Int4:
+		case BufferElementType::Uint:
+		case BufferElementType::Uint2:
+		case BufferElementType::Uint3:
+		case BufferElementType::Uint4: {
+			glVertexAttribIPointer(
+				index,
+				element.getTypeCount(),
+				element.getTypeGL(),
+				layout.getStride(),
+				reinterpret_cast<const void*>(element.getOffset()));
+			break;
+		}
+		case BufferElementType::Bool:
+		case BufferElementType::Bool2:
+		case BufferElementType::Bool3:
+		case BufferElementType::Bool4:
+		case BufferElementType::Float:
+		case BufferElementType::Vec2:
+		case BufferElementType::Vec3:
+		case BufferElementType::Vec4:
+		case BufferElementType::Mat2:
+		case BufferElementType::Mat3:
+		case BufferElementType::Mat4: {
+			glVertexAttribPointer(
+				index,
+				element.getTypeCount(),
+				element.getTypeGL(),
+				element.getNormalized() ? GL_TRUE : GL_FALSE,
+				layout.getStride(),
+				reinterpret_cast<const void*>(element.getOffset()));
+			break;
+		}
+		case BufferElementType::VecDouble:
+		case BufferElementType::VecDouble2:
+		case BufferElementType::VecDouble3:
+		case BufferElementType::VecDouble4:
+		case BufferElementType::MatDouble2:
+		case BufferElementType::MatDouble3:
+		case BufferElementType::MatDouble4: {
+			glVertexAttribLPointer(
+				index,
+				element.getTypeCount(),
+				element.getTypeGL(),
+				layout.getStride(),
+				reinterpret_cast<const void*>(element.getOffset()));
+			break;
+		}
+		default:
+			VERIFY_NOT_REACHED();
+		};
 
 		index++;
 	}

src/inferno/render/renderer.cpp

@@ -221,7 +221,7 @@ Renderer2D::Renderer2D(s)
 		{ BufferElementType::Vec3, "a_position" },
 		{ BufferElementType::Vec4, "a_color" },
 		{ BufferElementType::Vec2, "a_textureCoordinates" },
-		{ BufferElementType::Float, "a_textureIndex" },
+		{ BufferElementType::Uint, "a_textureIndex" },
 	});
 	m_vertexArray->addVertexBuffer(vertexBuffer);
 
@@ -271,7 +271,7 @@ void Renderer2D::drawQuad(const TransformComponent& transform, glm::mat4 color,
 		m_vertexBufferPtr->position = transform.transform * m_vertexPositions[i];
 		m_vertexBufferPtr->color = color[i];
 		m_vertexBufferPtr->textureCoordinates = textureCoordinates[i];
-		m_vertexBufferPtr->textureIndex = static_cast<float>(textureUnitIndex);
+		m_vertexBufferPtr->textureIndex = textureUnitIndex;
 		m_vertexBufferPtr++;
 	}
 
@@ -345,7 +345,7 @@ RendererCubemap::RendererCubemap(s)
 	vertexBuffer->setLayout({
 		{ BufferElementType::Vec3, "a_position" },
 		{ BufferElementType::Vec4, "a_color" },
-		{ BufferElementType::Float, "a_textureIndex" },
+		{ BufferElementType::Uint, "a_textureIndex" },
 	});
 	m_vertexArray->addVertexBuffer(vertexBuffer);
 
@@ -386,7 +386,7 @@ void RendererCubemap::drawCubemap(const TransformComponent& transform, glm::mat4
 	for (uint32_t i = 0; i < vertexPerQuad * quadPerCube; i++) {
 		m_vertexBufferPtr->position = transform.transform * m_vertexPositions[i];
 		m_vertexBufferPtr->color = color[i % 4];
-		m_vertexBufferPtr->textureIndex = static_cast<float>(textureUnitIndex);
+		m_vertexBufferPtr->textureIndex = textureUnitIndex;
 		m_vertexBufferPtr++;
 	}
 
@@ -423,7 +423,7 @@ RendererFont::RendererFont(s)
 		{ BufferElementType::Vec3, "a_position" },
 		{ BufferElementType::Vec4, "a_color" },
 		{ BufferElementType::Vec2, "a_textureCoordinates" },
-		{ BufferElementType::Float, "a_textureIndex" },
+		{ BufferElementType::Uint, "a_textureIndex" },
 		{ BufferElementType::Float, "a_width" },
 		{ BufferElementType::Float, "a_edge" },
 		{ BufferElementType::Float, "a_borderWidth" },
@@ -450,7 +450,7 @@ void RendererFont::drawSymbol(std::array<SymbolVertex, vertexPerQuad>& symbolQua
 		m_vertexBufferPtr->quad.position = symbolQuad[i].quad.position;
 		m_vertexBufferPtr->quad.color = symbolQuad[i].quad.color;
 		m_vertexBufferPtr->quad.textureCoordinates = symbolQuad[i].quad.textureCoordinates;
-		m_vertexBufferPtr->quad.textureIndex = static_cast<float>(textureUnitIndex);
+		m_vertexBufferPtr->quad.textureIndex = textureUnitIndex;
 
 		m_vertexBufferPtr->width = symbolQuad[i].width;
 		m_vertexBufferPtr->edge = symbolQuad[i].edge;
@@ -495,7 +495,7 @@ Renderer3D::Renderer3D(s)
 		{ BufferElementType::Vec3, "a_position" },
 		{ BufferElementType::Vec3, "a_normal" },
 		{ BufferElementType::Vec2, "a_textureCoordinates" },
-		{ BufferElementType::Float, "a_textureIndex" },
+		{ BufferElementType::Uint, "a_textureIndex" },
 	});
 	m_vertexArray->addVertexBuffer(vertexBuffer);
 
@@ -521,7 +521,7 @@ void Renderer3D::drawModel(std::span<const Vertex> vertices, std::span<const uin
 		m_vertexBufferPtr->position = transform.transform * glm::vec4(vertex.position, 1.0f);
 		m_vertexBufferPtr->normal = vertex.normal;
 		m_vertexBufferPtr->textureCoordinates = vertex.textureCoordinates;
-		m_vertexBufferPtr->textureIndex = static_cast<float>(textureUnitIndex);
+		m_vertexBufferPtr->textureIndex = textureUnitIndex;
 		m_vertexBufferPtr++;
 	}
 

src/inferno/render/renderer.h

@@ -27,13 +27,13 @@ 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 };
-	float textureIndex = 0;
+	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 };
-	float textureIndex = 0;
+	uint32_t textureIndex = 0;
 };
 
 struct SymbolVertex {
@@ -54,7 +54,7 @@ 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 };
-	float textureIndex = 0;
+	uint32_t textureIndex = 0;
 };
 
 // -------------------------------------