feat: Add OpenGLEnums.h for unified enum conversion
Add OpenGLEnums.h providing centralized OpenGL enum conversion functions: - ToOpenGL() for primitive types - ToOpenGLClearBuffer() for clear buffer flags - Simplifies OpenGL backend code by removing local enum mapping functions
This commit is contained in:
290
engine/include/XCEngine/RHI/OpenGL/OpenGLEnums.h
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290
engine/include/XCEngine/RHI/OpenGL/OpenGLEnums.h
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#pragma once
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#include <glad/glad.h>
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#include "../RHIEnums.h"
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#include "../RHITypes.h"
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#include "OpenGLTexture.h"
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#include "OpenGLBuffer.h"
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#include "OpenGLVertexArray.h"
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#include "OpenGLRenderTargetView.h"
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#include "OpenGLSampler.h"
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#include "OpenGLCommandList.h"
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namespace XCEngine {
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namespace RHI {
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inline GLenum ToOpenGL(PrimitiveTopology topology) {
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switch (topology) {
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case PrimitiveTopology::PointList: return GL_POINTS;
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case PrimitiveTopology::LineList: return GL_LINES;
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case PrimitiveTopology::LineStrip: return GL_LINE_STRIP;
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case PrimitiveTopology::TriangleList: return GL_TRIANGLES;
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case PrimitiveTopology::TriangleStrip: return GL_TRIANGLE_STRIP;
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case PrimitiveTopology::LineListAdj: return GL_LINES_ADJACENCY;
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case PrimitiveTopology::LineStripAdj: return GL_LINE_STRIP_ADJACENCY;
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case PrimitiveTopology::TriangleListAdj: return GL_TRIANGLES_ADJACENCY;
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case PrimitiveTopology::TriangleStripAdj: return GL_TRIANGLE_STRIP_ADJACENCY;
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case PrimitiveTopology::PatchList: return GL_PATCHES;
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default: return GL_TRIANGLES;
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}
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}
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inline GLenum ToOpenGL(PrimitiveType type) {
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switch (type) {
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case PrimitiveType::Points: return GL_POINTS;
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case PrimitiveType::Lines: return GL_LINES;
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case PrimitiveType::LineStrip: return GL_LINE_STRIP;
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case PrimitiveType::Triangles: return GL_TRIANGLES;
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case PrimitiveType::TriangleStrip: return GL_TRIANGLE_STRIP;
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case PrimitiveType::TriangleFan: return GL_TRIANGLE_FAN;
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case PrimitiveType::LineListAdj: return GL_LINES_ADJACENCY;
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case PrimitiveType::TriangleListAdj: return GL_TRIANGLES_ADJACENCY;
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case PrimitiveType::Patch: return GL_PATCHES;
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default: return GL_TRIANGLES;
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}
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}
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inline GLenum ToOpenGL(ComparisonFunc func) {
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switch (func) {
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case ComparisonFunc::Never: return GL_NEVER;
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case ComparisonFunc::Less: return GL_LESS;
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case ComparisonFunc::Equal: return GL_EQUAL;
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case ComparisonFunc::LessEqual: return GL_LEQUAL;
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case ComparisonFunc::Greater: return GL_GREATER;
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case ComparisonFunc::NotEqual: return GL_NOTEQUAL;
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case ComparisonFunc::GreaterEqual: return GL_GEQUAL;
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case ComparisonFunc::Always: return GL_ALWAYS;
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default: return GL_LESS;
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}
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}
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inline GLenum ToOpenGL(StencilOp op) {
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switch (op) {
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case StencilOp::Keep: return GL_KEEP;
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case StencilOp::Zero: return GL_ZERO;
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case StencilOp::Replace: return GL_REPLACE;
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case StencilOp::IncrSat: return GL_INCR;
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case StencilOp::DecrSat: return GL_DECR;
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case StencilOp::Invert: return GL_INVERT;
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case StencilOp::Incr: return GL_INCR_WRAP;
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case StencilOp::Decr: return GL_DECR_WRAP;
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default: return GL_KEEP;
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}
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}
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inline GLenum ToOpenGL(BlendFactor factor) {
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switch (factor) {
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case BlendFactor::Zero: return GL_ZERO;
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case BlendFactor::One: return GL_ONE;
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case BlendFactor::SrcColor: return GL_SRC_COLOR;
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case BlendFactor::InvSrcColor: return GL_ONE_MINUS_SRC_COLOR;
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case BlendFactor::SrcAlpha: return GL_SRC_ALPHA;
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case BlendFactor::InvSrcAlpha: return GL_ONE_MINUS_SRC_ALPHA;
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case BlendFactor::DstAlpha: return GL_DST_ALPHA;
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case BlendFactor::InvDstAlpha: return GL_ONE_MINUS_DST_ALPHA;
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case BlendFactor::DstColor: return GL_DST_COLOR;
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case BlendFactor::InvDstColor: return GL_ONE_MINUS_DST_COLOR;
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case BlendFactor::SrcAlphaSat: return GL_SRC_ALPHA_SATURATE;
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case BlendFactor::BlendFactor: return GL_CONSTANT_COLOR;
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case BlendFactor::InvBlendFactor: return GL_ONE_MINUS_CONSTANT_COLOR;
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case BlendFactor::Src1Color: return GL_SRC1_COLOR;
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case BlendFactor::InvSrc1Color: return GL_ONE_MINUS_SRC1_COLOR;
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case BlendFactor::Src1Alpha: return GL_SRC1_ALPHA;
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case BlendFactor::InvSrc1Alpha: return GL_ONE_MINUS_SRC1_ALPHA;
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default: return GL_ONE;
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}
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}
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inline GLenum ToOpenGL(BlendOp op) {
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switch (op) {
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case BlendOp::Add: return GL_FUNC_ADD;
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case BlendOp::Subtract: return GL_FUNC_SUBTRACT;
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case BlendOp::ReverseSubtract: return GL_FUNC_REVERSE_SUBTRACT;
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case BlendOp::Min: return GL_MIN;
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case BlendOp::Max: return GL_MAX;
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default: return GL_FUNC_ADD;
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}
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}
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inline GLenum ToOpenGL(OpenGLTextureType type) {
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switch (type) {
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case OpenGLTextureType::Texture1D: return GL_TEXTURE_1D;
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case OpenGLTextureType::Texture2D: return GL_TEXTURE_2D;
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case OpenGLTextureType::Texture2DArray: return GL_TEXTURE_2D_ARRAY;
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case OpenGLTextureType::Texture3D: return GL_TEXTURE_3D;
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case OpenGLTextureType::TextureCube: return GL_TEXTURE_CUBE_MAP;
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case OpenGLTextureType::TextureCubeArray: return GL_TEXTURE_CUBE_MAP_ARRAY;
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default: return GL_TEXTURE_2D;
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}
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}
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inline void ToOpenGLFormat(OpenGLFormat fmt, GLint& internalFormat, GLenum& glFormat, GLenum& glType) {
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switch (fmt) {
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case OpenGLFormat::R8:
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internalFormat = GL_R8; glFormat = GL_RED; glType = GL_UNSIGNED_BYTE;
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break;
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case OpenGLFormat::RG8:
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internalFormat = GL_RG8; glFormat = GL_RG; glType = GL_UNSIGNED_BYTE;
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break;
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case OpenGLFormat::RGBA8:
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internalFormat = GL_RGBA8; glFormat = GL_RGBA; glType = GL_UNSIGNED_BYTE;
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break;
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case OpenGLFormat::RGBA16F:
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internalFormat = GL_RGBA16F; glFormat = GL_RGBA; glType = GL_HALF_FLOAT;
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break;
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case OpenGLFormat::RGBA32F:
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internalFormat = GL_RGBA32F; glFormat = GL_RGBA; glType = GL_FLOAT;
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break;
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case OpenGLFormat::Depth24Stencil8:
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internalFormat = GL_DEPTH24_STENCIL8; glFormat = GL_DEPTH_STENCIL; glType = GL_UNSIGNED_INT_24_8;
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break;
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case OpenGLFormat::Depth32F:
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internalFormat = GL_DEPTH_COMPONENT32F; glFormat = GL_DEPTH_COMPONENT; glType = GL_FLOAT;
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break;
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default:
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internalFormat = GL_RGBA8; glFormat = GL_RGBA; glType = GL_UNSIGNED_BYTE;
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break;
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}
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}
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inline GLenum ToOpenGL(OpenGLBufferType type) {
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switch (type) {
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case OpenGLBufferType::Vertex: return GL_ARRAY_BUFFER;
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case OpenGLBufferType::Index: return GL_ELEMENT_ARRAY_BUFFER;
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case OpenGLBufferType::Uniform: return GL_UNIFORM_BUFFER;
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case OpenGLBufferType::CopyRead: return GL_COPY_READ_BUFFER;
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case OpenGLBufferType::CopyWrite: return GL_COPY_WRITE_BUFFER;
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case OpenGLBufferType::AtomicCounter: return GL_ATOMIC_COUNTER_BUFFER;
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case OpenGLBufferType::DispatchIndirect: return GL_DISPATCH_INDIRECT_BUFFER;
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case OpenGLBufferType::DrawIndirect: return GL_DRAW_INDIRECT_BUFFER;
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case OpenGLBufferType::ShaderBindingTable: return GL_SHADER_STORAGE_BUFFER;
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default: return GL_ARRAY_BUFFER;
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}
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}
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inline GLenum ToOpenGL(VertexAttributeType type) {
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switch (type) {
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case VertexAttributeType::Float: return GL_FLOAT;
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case VertexAttributeType::Int: return GL_INT;
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case VertexAttributeType::UnsignedInt: return GL_UNSIGNED_INT;
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case VertexAttributeType::Short: return GL_SHORT;
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case VertexAttributeType::UnsignedShort: return GL_UNSIGNED_SHORT;
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case VertexAttributeType::Byte: return GL_BYTE;
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case VertexAttributeType::UnsignedByte: return GL_UNSIGNED_BYTE;
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case VertexAttributeType::Double: return GL_DOUBLE;
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case VertexAttributeType::HalfFloat: return GL_HALF_FLOAT;
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case VertexAttributeType::Fixed: return GL_FIXED;
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case VertexAttributeType::Int2101010Rev: return GL_INT_2_10_10_10_REV;
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case VertexAttributeType::UnsignedInt2101010Rev: return GL_UNSIGNED_INT_2_10_10_10_REV;
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case VertexAttributeType::UnsignedInt10F11F11FRev: return GL_UNSIGNED_INT_10F_11F_11F_REV;
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default: return GL_FLOAT;
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}
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}
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inline GLenum ToOpenGL(RenderTargetType type) {
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switch (type) {
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case RenderTargetType::Texture2D: return GL_TEXTURE_2D;
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case RenderTargetType::Texture2DArray: return GL_TEXTURE_2D_ARRAY;
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case RenderTargetType::Texture3D: return GL_TEXTURE_3D;
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case RenderTargetType::TextureCube: return GL_TEXTURE_CUBE_MAP;
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case RenderTargetType::TextureCubeArray: return GL_TEXTURE_CUBE_MAP_ARRAY;
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default: return GL_TEXTURE_2D;
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}
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}
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inline GLenum ToOpenGL(SamplerWrapMode mode) {
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switch (mode) {
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case SamplerWrapMode::Repeat: return GL_REPEAT;
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case SamplerWrapMode::MirroredRepeat: return GL_MIRRORED_REPEAT;
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case SamplerWrapMode::ClampToEdge: return GL_CLAMP_TO_EDGE;
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case SamplerWrapMode::ClampToBorder: return GL_CLAMP_TO_BORDER;
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default: return GL_REPEAT;
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}
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}
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inline GLenum ToOpenGL(SamplerFilter filter) {
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switch (filter) {
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case SamplerFilter::Nearest: return GL_NEAREST;
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case SamplerFilter::Linear: return GL_LINEAR;
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case SamplerFilter::NearestMipmapNearest: return GL_NEAREST_MIPMAP_NEAREST;
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case SamplerFilter::LinearMipmapNearest: return GL_LINEAR_MIPMAP_NEAREST;
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case SamplerFilter::NearestMipmapLinear: return GL_NEAREST_MIPMAP_LINEAR;
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case SamplerFilter::LinearMipmapLinear: return GL_LINEAR_MIPMAP_LINEAR;
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default: return GL_LINEAR;
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}
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}
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inline GLenum ToOpenGL(TextureAddressMode mode) {
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switch (mode) {
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case TextureAddressMode::Wrap: return GL_REPEAT;
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case TextureAddressMode::Mirror: return GL_MIRRORED_REPEAT;
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case TextureAddressMode::Clamp: return GL_CLAMP_TO_EDGE;
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case TextureAddressMode::Border: return GL_CLAMP_TO_BORDER;
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case TextureAddressMode::MirrorOnce: return GL_MIRROR_CLAMP_TO_EDGE;
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default: return GL_REPEAT;
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}
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}
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inline GLenum ToOpenGL(FilterMode mode) {
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switch (mode) {
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case FilterMode::Point: return GL_NEAREST;
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case FilterMode::Linear: return GL_LINEAR;
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case FilterMode::Anisotropic: return GL_LINEAR;
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case FilterMode::ComparisonPoint: return GL_NEAREST;
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case FilterMode::ComparisonLinear: return GL_LINEAR;
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case FilterMode::ComparisonAnisotropic: return GL_LINEAR;
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default: return GL_LINEAR;
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}
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}
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inline GLenum ToOpenGL(CullMode mode) {
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switch (mode) {
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case CullMode::None: return 0;
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case CullMode::Front: return GL_FRONT;
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case CullMode::Back: return GL_BACK;
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default: return GL_BACK;
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}
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}
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inline GLenum ToOpenGL(FrontFace face) {
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switch (face) {
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case FrontFace::Clockwise: return GL_CW;
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case FrontFace::CounterClockwise: return GL_CCW;
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default: return GL_CCW;
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}
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}
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inline GLenum ToOpenGL(FillMode mode) {
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switch (mode) {
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case FillMode::Wireframe: return GL_LINE;
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case FillMode::Solid: return GL_FILL;
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default: return GL_FILL;
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}
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}
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inline GLbitfield ToOpenGLClearBuffer(uint32_t buffers) {
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GLbitfield glBuffers = 0;
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if (buffers & 1) glBuffers |= GL_COLOR_BUFFER_BIT;
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if (buffers & 2) glBuffers |= GL_DEPTH_BUFFER_BIT;
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if (buffers & 4) glBuffers |= GL_STENCIL_BUFFER_BIT;
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return glBuffers;
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}
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inline GLenum ToOpenGLDepthAttachment() {
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return GL_DEPTH_ATTACHMENT;
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}
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inline GLenum ToOpenGLStencilAttachment() {
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return GL_STENCIL_ATTACHMENT;
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}
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inline GLenum ToOpenGLDepthStencilAttachment() {
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return GL_DEPTH_STENCIL_ATTACHMENT;
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}
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inline GLenum ToOpenGLColorAttachment(uint32_t index) {
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return GL_COLOR_ATTACHMENT0 + index;
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}
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} // namespace RHI
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} // namespace XCEngine
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