281 lines
11 KiB
C++
281 lines
11 KiB
C++
// Copyright (C) 2020 Jérôme Leclercq
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// This file is part of the "Nazara Engine - OpenGL Renderer"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/OpenGLRenderer/Utils.hpp>
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#include <Nazara/Core/Algorithm.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <Nazara/Core/StringExt.hpp>
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#include <Nazara/OpenGLRenderer/Debug.hpp>
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namespace Nz
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{
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inline std::optional<GLTextureFormat> DescribeTextureFormat(PixelFormat pixelFormat)
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{
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// TODO: Fill this switch
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switch (pixelFormat)
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{
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case PixelFormat::A8: return GLTextureFormat{ GL_R8, GL_RED, GL_UNSIGNED_BYTE, GL_ZERO, GL_ZERO, GL_ZERO, GL_RED };
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case PixelFormat::BGR8: return GLTextureFormat{ GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE, GL_BLUE, GL_GREEN, GL_RED, GL_ONE };
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case PixelFormat::BGR8_SRGB: return GLTextureFormat{ GL_SRGB8, GL_RGB, GL_UNSIGNED_BYTE, GL_BLUE, GL_GREEN, GL_RED, GL_ONE };
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case PixelFormat::BGRA8: return GLTextureFormat{ GL_SRGB8_ALPHA8, GL_RGBA, GL_UNSIGNED_BYTE, GL_BLUE, GL_GREEN, GL_RED, GL_ALPHA };
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case PixelFormat::BGRA8_SRGB: return GLTextureFormat{ GL_SRGB8_ALPHA8, GL_RGBA, GL_UNSIGNED_BYTE, GL_BLUE, GL_GREEN, GL_RED, GL_ALPHA };
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case PixelFormat::Depth16: return GLTextureFormat{ GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, GL_RED, GL_ZERO, GL_ZERO, GL_ZERO };
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case PixelFormat::Depth24Stencil8: return GLTextureFormat{ GL_DEPTH24_STENCIL8, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, GL_RED, GL_GREEN, GL_ZERO, GL_ZERO };
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case PixelFormat::Depth32F: return GLTextureFormat{ GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_FLOAT, GL_RED, GL_ZERO, GL_ZERO, GL_ZERO };
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case PixelFormat::Depth32FStencil8: return GLTextureFormat{ GL_DEPTH32F_STENCIL8, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, GL_RED, GL_GREEN, GL_ZERO, GL_ZERO };
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case PixelFormat::RGB8: return GLTextureFormat{ GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE, GL_RED, GL_GREEN, GL_BLUE, GL_ONE };
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case PixelFormat::RGB8_SRGB: return GLTextureFormat{ GL_SRGB8, GL_RGB, GL_UNSIGNED_BYTE, GL_RED, GL_GREEN, GL_BLUE, GL_ONE };
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case PixelFormat::RGBA8: return GLTextureFormat{ GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA };
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case PixelFormat::RGBA8_SRGB: return GLTextureFormat{ GL_SRGB8_ALPHA8, GL_RGBA, GL_UNSIGNED_BYTE, GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA };
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case PixelFormat::RGBA32F: return GLTextureFormat{ GL_RGBA32F, GL_RGBA, GL_FLOAT, GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA };
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default: break;
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}
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NazaraError("Unhandled PixelFormat 0x" + NumberToString(UnderlyingCast(pixelFormat), 16));
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return {};
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}
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inline GLenum ToOpenGL(BlendEquation blendEquation)
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{
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switch (blendEquation)
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{
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case BlendEquation::Add: return GL_FUNC_ADD;
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case BlendEquation::Max: return GL_MAX;
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case BlendEquation::Min: return GL_MIN;
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case BlendEquation::ReverseSubtract: return GL_FUNC_REVERSE_SUBTRACT;
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case BlendEquation::Subtract: return GL_FUNC_SUBTRACT;
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}
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NazaraError("Unhandled BlendEquation 0x" + NumberToString(UnderlyingCast(blendEquation), 16));
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return {};
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}
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inline GLenum ToOpenGL(BlendFunc blendFunc)
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{
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switch (blendFunc)
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{
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case BlendFunc::ConstantAlpha: return GL_CONSTANT_ALPHA;
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case BlendFunc::ConstantColor: return GL_CONSTANT_COLOR;
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case BlendFunc::DstAlpha: return GL_DST_ALPHA;
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case BlendFunc::DstColor: return GL_DST_COLOR;
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case BlendFunc::InvConstantAlpha: return GL_ONE_MINUS_CONSTANT_ALPHA;
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case BlendFunc::InvConstantColor: return GL_ONE_MINUS_CONSTANT_COLOR;
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case BlendFunc::InvDstAlpha: return GL_ONE_MINUS_DST_ALPHA;
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case BlendFunc::InvDstColor: return GL_ONE_MINUS_DST_COLOR;
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case BlendFunc::InvSrcAlpha: return GL_ONE_MINUS_SRC_ALPHA;
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case BlendFunc::InvSrcColor: return GL_ONE_MINUS_SRC_COLOR;
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case BlendFunc::SrcAlpha: return GL_SRC_ALPHA;
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case BlendFunc::SrcColor: return GL_SRC_COLOR;
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case BlendFunc::One: return GL_ONE;
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case BlendFunc::Zero: return GL_ZERO;
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}
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NazaraError("Unhandled BlendFunc 0x" + NumberToString(UnderlyingCast(blendFunc), 16));
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return {};
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}
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inline GLenum ToOpenGL(FaceFilling side)
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{
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switch (side)
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{
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case FaceFilling::Fill: return GL_FILL;
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case FaceFilling::Line: return GL_LINE;
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case FaceFilling::Point: return GL_POINT;
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}
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NazaraError("Unhandled FaceFilling 0x" + NumberToString(UnderlyingCast(side), 16));
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return {};
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}
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inline GLenum ToOpenGL(FaceSide side)
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{
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switch (side)
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{
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case FaceSide::None:
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break;
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case FaceSide::Back: return GL_BACK;
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case FaceSide::Front: return GL_FRONT;
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case FaceSide::FrontAndBack: return GL_FRONT_AND_BACK;
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}
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NazaraError("Unhandled FaceSide 0x" + NumberToString(UnderlyingCast(side), 16));
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return {};
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}
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inline GLenum ToOpenGL(FrontFace face)
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{
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switch (face)
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{
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case FrontFace::Clockwise: return GL_CW;
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case FrontFace::CounterClockwise: return GL_CCW;
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}
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NazaraError("Unhandled FrontFace 0x" + NumberToString(UnderlyingCast(face), 16));
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return {};
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}
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inline GLenum ToOpenGL(PrimitiveMode primitiveMode)
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{
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switch (primitiveMode)
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{
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case PrimitiveMode::LineList: return GL_LINES;
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case PrimitiveMode::LineStrip: return GL_LINE_STRIP;
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case PrimitiveMode::PointList: return GL_POINTS;
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case PrimitiveMode::TriangleList: return GL_TRIANGLES;
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case PrimitiveMode::TriangleStrip: return GL_TRIANGLE_STRIP;
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case PrimitiveMode::TriangleFan: return GL_TRIANGLE_FAN;
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}
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NazaraError("Unhandled PrimitiveMode 0x" + NumberToString(UnderlyingCast(primitiveMode), 16));
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return {};
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}
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inline GLenum ToOpenGL(RendererComparison comparison)
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{
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switch (comparison)
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{
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case RendererComparison::Always: return GL_ALWAYS;
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case RendererComparison::Equal: return GL_EQUAL;
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case RendererComparison::Greater: return GL_GREATER;
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case RendererComparison::GreaterOrEqual: return GL_GEQUAL;
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case RendererComparison::Less: return GL_LESS;
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case RendererComparison::LessOrEqual: return GL_LEQUAL;
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case RendererComparison::Never: return GL_NEVER;
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case RendererComparison::NotEqual: return GL_NOTEQUAL;
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}
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NazaraError("Unhandled RendererComparison 0x" + NumberToString(UnderlyingCast(comparison), 16));
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return {};
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}
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inline GLenum ToOpenGL(SamplerFilter filter)
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{
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switch (filter)
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{
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case SamplerFilter::Linear: return GL_LINEAR;
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case SamplerFilter::Nearest: return GL_NEAREST;
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}
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NazaraError("Unhandled SamplerFilter 0x" + NumberToString(UnderlyingCast(filter), 16));
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return {};
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}
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inline GLenum ToOpenGL(SamplerFilter minFilter, SamplerMipmapMode mipmapFilter)
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{
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switch (minFilter)
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{
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case SamplerFilter::Linear:
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{
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switch (mipmapFilter)
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{
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case SamplerMipmapMode::Linear: return GL_LINEAR_MIPMAP_LINEAR;
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case SamplerMipmapMode::Nearest: return GL_LINEAR_MIPMAP_NEAREST;
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}
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NazaraError("Unhandled SamplerFilter 0x" + NumberToString(UnderlyingCast(mipmapFilter), 16));
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return {};
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}
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case SamplerFilter::Nearest:
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{
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switch (mipmapFilter)
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{
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case SamplerMipmapMode::Linear: return GL_NEAREST_MIPMAP_LINEAR;
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case SamplerMipmapMode::Nearest: return GL_NEAREST_MIPMAP_NEAREST;
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}
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NazaraError("Unhandled SamplerFilter 0x" + NumberToString(UnderlyingCast(mipmapFilter), 16));
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return {};
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}
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}
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NazaraError("Unhandled SamplerFilter 0x" + NumberToString(UnderlyingCast(minFilter), 16));
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return {};
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}
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inline GLenum ToOpenGL(SamplerWrap wrapMode)
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{
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switch (wrapMode)
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{
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case SamplerWrap::Clamp: return GL_CLAMP_TO_EDGE;
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case SamplerWrap::MirroredRepeat: return GL_MIRRORED_REPEAT;
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case SamplerWrap::Repeat: return GL_REPEAT;
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}
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NazaraError("Unhandled SamplerWrap 0x" + NumberToString(UnderlyingCast(wrapMode), 16));
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return {};
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}
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inline GLenum ToOpenGL(ShaderStageType stageType)
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{
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switch (stageType)
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{
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case ShaderStageType::Fragment: return GL_FRAGMENT_SHADER;
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case ShaderStageType::Vertex: return GL_VERTEX_SHADER;
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}
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NazaraError("Unhandled ShaderStageType 0x" + NumberToString(UnderlyingCast(stageType), 16));
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return {};
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}
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inline GLenum ToOpenGL(StencilOperation stencilOp)
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{
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switch (stencilOp)
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{
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case StencilOperation::Decrement: return GL_DECR;
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case StencilOperation::DecrementNoClamp: return GL_DECR_WRAP;
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case StencilOperation::Increment: return GL_INCR;
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case StencilOperation::IncrementNoClamp: return GL_INCR_WRAP;
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case StencilOperation::Invert: return GL_INVERT;
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case StencilOperation::Keep: return GL_KEEP;
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case StencilOperation::Replace: return GL_REPLACE;
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case StencilOperation::Zero: return GL_ZERO;
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}
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NazaraError("Unhandled StencilOperation 0x" + NumberToString(UnderlyingCast(stencilOp), 16));
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return {};
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}
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inline GLenum ToOpenGL(GL::BufferTarget bufferTarget)
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{
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switch (bufferTarget)
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{
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case GL::BufferTarget::Array: return GL_ARRAY_BUFFER;
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case GL::BufferTarget::CopyRead: return GL_COPY_READ_BUFFER;
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case GL::BufferTarget::CopyWrite: return GL_COPY_WRITE_BUFFER;
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case GL::BufferTarget::ElementArray: return GL_ELEMENT_ARRAY_BUFFER;
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case GL::BufferTarget::PixelPack: return GL_PIXEL_PACK_BUFFER;
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case GL::BufferTarget::PixelUnpack: return GL_PIXEL_UNPACK_BUFFER;
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case GL::BufferTarget::TransformFeedback: return GL_TRANSFORM_FEEDBACK_BUFFER;
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case GL::BufferTarget::Uniform: return GL_UNIFORM_BUFFER;
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}
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NazaraError("Unhandled GL::BufferTarget 0x" + NumberToString(UnderlyingCast(bufferTarget), 16));
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return {};
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}
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inline GLenum ToOpenGL(GL::TextureTarget textureTarget)
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{
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switch (textureTarget)
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{
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case GL::TextureTarget::Cubemap: return GL_TEXTURE_CUBE_MAP;
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case GL::TextureTarget::CubemapNegativeX: return GL_TEXTURE_CUBE_MAP_NEGATIVE_X;
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case GL::TextureTarget::CubemapNegativeY: return GL_TEXTURE_CUBE_MAP_NEGATIVE_Y;
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case GL::TextureTarget::CubemapNegativeZ: return GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
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case GL::TextureTarget::CubemapPositiveX: return GL_TEXTURE_CUBE_MAP_POSITIVE_X;
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case GL::TextureTarget::CubemapPositiveY: return GL_TEXTURE_CUBE_MAP_POSITIVE_Y;
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case GL::TextureTarget::CubemapPositiveZ: return GL_TEXTURE_CUBE_MAP_POSITIVE_Z;
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case GL::TextureTarget::Target2D: return GL_TEXTURE_2D;
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case GL::TextureTarget::Target2D_Array: return GL_TEXTURE_2D_ARRAY;
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case GL::TextureTarget::Target3D: return GL_TEXTURE_3D;
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}
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NazaraError("Unhandled GL::TextureTarget 0x" + NumberToString(UnderlyingCast(textureTarget), 16));
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return {};
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}
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}
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#include <Nazara/OpenGLRenderer/DebugOff.hpp>
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