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// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <glad/glad.h>
#include "common/common_types.h"
#include "common/logging/log.h"
#include "video_core/engines/maxwell_3d.h"
using GLvec2 = std::array<GLfloat, 2>;
using GLvec3 = std::array<GLfloat, 3>;
using GLvec4 = std::array<GLfloat, 4>;
using GLuvec2 = std::array<GLuint, 2>;
using GLuvec3 = std::array<GLuint, 3>;
using GLuvec4 = std::array<GLuint, 4>;
namespace MaxwellToGL {
using Maxwell = Tegra::Engines::Maxwell3D::Regs;
inline GLenum VertexType(Maxwell::VertexAttribute attrib) {
switch (attrib.type) {
case Maxwell::VertexAttribute::Type::UnsignedNorm: {
switch (attrib.size) {
case Maxwell::VertexAttribute::Size::Size_8_8_8_8:
return GL_UNSIGNED_BYTE;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented vertex size={}", attrib.SizeString());
UNREACHABLE();
return {};
}
case Maxwell::VertexAttribute::Type::SignedNorm: {
switch (attrib.size) {
case Maxwell::VertexAttribute::Size::Size_8_8_8_8:
return GL_BYTE;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented vertex size={}", attrib.SizeString());
UNREACHABLE();
return {};
}
case Maxwell::VertexAttribute::Type::Float:
return GL_FLOAT;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented vertex type={}", attrib.TypeString());
UNREACHABLE();
return {};
}
inline GLenum IndexFormat(Maxwell::IndexFormat index_format) {
switch (index_format) {
case Maxwell::IndexFormat::UnsignedByte:
return GL_UNSIGNED_BYTE;
case Maxwell::IndexFormat::UnsignedShort:
return GL_UNSIGNED_SHORT;
case Maxwell::IndexFormat::UnsignedInt:
return GL_UNSIGNED_INT;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented index_format={}", static_cast<u32>(index_format));
UNREACHABLE();
return {};
}
inline GLenum PrimitiveTopology(Maxwell::PrimitiveTopology topology) {
switch (topology) {
case Maxwell::PrimitiveTopology::Triangles:
return GL_TRIANGLES;
case Maxwell::PrimitiveTopology::TriangleStrip:
return GL_TRIANGLE_STRIP;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented topology={}", static_cast<u32>(topology));
UNREACHABLE();
return {};
}
inline GLenum TextureFilterMode(Tegra::Texture::TextureFilter filter_mode) {
switch (filter_mode) {
case Tegra::Texture::TextureFilter::Linear:
return GL_LINEAR;
case Tegra::Texture::TextureFilter::Nearest:
return GL_NEAREST;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented texture filter mode={}",
static_cast<u32>(filter_mode));
UNREACHABLE();
return {};
}
inline GLenum WrapMode(Tegra::Texture::WrapMode wrap_mode) {
switch (wrap_mode) {
case Tegra::Texture::WrapMode::Wrap:
return GL_REPEAT;
case Tegra::Texture::WrapMode::Mirror:
return GL_MIRRORED_REPEAT;
case Tegra::Texture::WrapMode::ClampToEdge:
return GL_CLAMP_TO_EDGE;
case Tegra::Texture::WrapMode::ClampOGL:
// TODO(Subv): GL_CLAMP was removed as of OpenGL 3.1, to implement GL_CLAMP, we can use
// GL_CLAMP_TO_BORDER to get the border color of the texture, and then sample the edge to
// manually mix them. However the shader part of this is not yet implemented.
return GL_CLAMP_TO_BORDER;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented texture wrap mode={}",
static_cast<u32>(wrap_mode));
UNREACHABLE();
return {};
}
inline GLenum BlendEquation(Maxwell::Blend::Equation equation) {
switch (equation) {
case Maxwell::Blend::Equation::Add:
return GL_FUNC_ADD;
case Maxwell::Blend::Equation::Subtract:
return GL_FUNC_SUBTRACT;
case Maxwell::Blend::Equation::ReverseSubtract:
return GL_FUNC_REVERSE_SUBTRACT;
case Maxwell::Blend::Equation::Min:
return GL_MIN;
case Maxwell::Blend::Equation::Max:
return GL_MAX;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented blend equation={}", static_cast<u32>(equation));
UNREACHABLE();
return {};
}
inline GLenum BlendFunc(Maxwell::Blend::Factor factor) {
switch (factor) {
case Maxwell::Blend::Factor::Zero:
return GL_ZERO;
case Maxwell::Blend::Factor::One:
return GL_ONE;
case Maxwell::Blend::Factor::SourceColor:
return GL_SRC_COLOR;
case Maxwell::Blend::Factor::OneMinusSourceColor:
return GL_ONE_MINUS_SRC_COLOR;
case Maxwell::Blend::Factor::SourceAlpha:
return GL_SRC_ALPHA;
case Maxwell::Blend::Factor::OneMinusSourceAlpha:
return GL_ONE_MINUS_SRC_ALPHA;
case Maxwell::Blend::Factor::DestAlpha:
return GL_DST_ALPHA;
case Maxwell::Blend::Factor::OneMinusDestAlpha:
return GL_ONE_MINUS_DST_ALPHA;
case Maxwell::Blend::Factor::DestColor:
return GL_DST_COLOR;
case Maxwell::Blend::Factor::OneMinusDestColor:
return GL_ONE_MINUS_DST_COLOR;
case Maxwell::Blend::Factor::SourceAlphaSaturate:
return GL_SRC_ALPHA_SATURATE;
case Maxwell::Blend::Factor::Source1Color:
return GL_SRC1_COLOR;
case Maxwell::Blend::Factor::OneMinusSource1Color:
return GL_ONE_MINUS_SRC1_COLOR;
case Maxwell::Blend::Factor::Source1Alpha:
return GL_SRC1_ALPHA;
case Maxwell::Blend::Factor::OneMinusSource1Alpha:
return GL_ONE_MINUS_SRC1_ALPHA;
case Maxwell::Blend::Factor::ConstantColor:
return GL_CONSTANT_COLOR;
case Maxwell::Blend::Factor::OneMinusConstantColor:
return GL_ONE_MINUS_CONSTANT_COLOR;
case Maxwell::Blend::Factor::ConstantAlpha:
return GL_CONSTANT_ALPHA;
case Maxwell::Blend::Factor::OneMinusConstantAlpha:
return GL_ONE_MINUS_CONSTANT_ALPHA;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented blend factor={}", static_cast<u32>(factor));
UNREACHABLE();
return {};
}
inline GLenum SwizzleSource(Tegra::Texture::SwizzleSource source) {
switch (source) {
case Tegra::Texture::SwizzleSource::Zero:
return GL_ZERO;
case Tegra::Texture::SwizzleSource::R:
return GL_RED;
case Tegra::Texture::SwizzleSource::G:
return GL_GREEN;
case Tegra::Texture::SwizzleSource::B:
return GL_BLUE;
case Tegra::Texture::SwizzleSource::A:
return GL_ALPHA;
case Tegra::Texture::SwizzleSource::OneInt:
case Tegra::Texture::SwizzleSource::OneFloat:
return GL_ONE;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented swizzle source={}", static_cast<u32>(source));
UNREACHABLE();
return {};
}
} // namespace MaxwellToGL
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