forked from suyu/suyu
221 lines
7.2 KiB
C++
221 lines
7.2 KiB
C++
// Copyright 2015 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <cstddef>
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#include <glad/glad.h>
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#include "common/assert.h"
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#include "common/bit_field.h"
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#include "common/common_funcs.h"
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "video_core/regs_framebuffer.h"
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#include "video_core/regs_lighting.h"
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#include "video_core/regs_texturing.h"
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using GLvec2 = std::array<GLfloat, 2>;
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using GLvec3 = std::array<GLfloat, 3>;
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using GLvec4 = std::array<GLfloat, 4>;
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namespace PicaToGL {
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inline GLenum TextureFilterMode(Pica::TexturingRegs::TextureConfig::TextureFilter mode) {
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static const GLenum filter_mode_table[] = {
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GL_NEAREST, // TextureFilter::Nearest
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GL_LINEAR, // TextureFilter::Linear
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};
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// Range check table for input
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if (static_cast<size_t>(mode) >= ARRAY_SIZE(filter_mode_table)) {
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LOG_CRITICAL(Render_OpenGL, "Unknown texture filtering mode %d", mode);
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UNREACHABLE();
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return GL_LINEAR;
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}
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GLenum gl_mode = filter_mode_table[mode];
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// Check for dummy values indicating an unknown mode
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if (gl_mode == 0) {
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LOG_CRITICAL(Render_OpenGL, "Unknown texture filtering mode %d", mode);
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UNIMPLEMENTED();
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return GL_LINEAR;
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}
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return gl_mode;
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}
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inline GLenum WrapMode(Pica::TexturingRegs::TextureConfig::WrapMode mode) {
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static const GLenum wrap_mode_table[] = {
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GL_CLAMP_TO_EDGE, // WrapMode::ClampToEdge
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GL_CLAMP_TO_BORDER, // WrapMode::ClampToBorder
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GL_REPEAT, // WrapMode::Repeat
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GL_MIRRORED_REPEAT, // WrapMode::MirroredRepeat
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};
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// Range check table for input
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if (static_cast<size_t>(mode) >= ARRAY_SIZE(wrap_mode_table)) {
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LOG_CRITICAL(Render_OpenGL, "Unknown texture wrap mode %d", mode);
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UNREACHABLE();
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return GL_CLAMP_TO_EDGE;
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}
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GLenum gl_mode = wrap_mode_table[mode];
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// Check for dummy values indicating an unknown mode
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if (gl_mode == 0) {
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LOG_CRITICAL(Render_OpenGL, "Unknown texture wrap mode %d", mode);
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UNIMPLEMENTED();
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return GL_CLAMP_TO_EDGE;
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}
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return gl_mode;
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}
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inline GLenum BlendEquation(Pica::FramebufferRegs::BlendEquation equation) {
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static const GLenum blend_equation_table[] = {
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GL_FUNC_ADD, // BlendEquation::Add
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GL_FUNC_SUBTRACT, // BlendEquation::Subtract
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GL_FUNC_REVERSE_SUBTRACT, // BlendEquation::ReverseSubtract
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GL_MIN, // BlendEquation::Min
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GL_MAX, // BlendEquation::Max
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};
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// Range check table for input
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if (static_cast<size_t>(equation) >= ARRAY_SIZE(blend_equation_table)) {
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LOG_CRITICAL(Render_OpenGL, "Unknown blend equation %d", equation);
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UNREACHABLE();
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return GL_FUNC_ADD;
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}
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return blend_equation_table[(unsigned)equation];
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}
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inline GLenum BlendFunc(Pica::FramebufferRegs::BlendFactor factor) {
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static const GLenum blend_func_table[] = {
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GL_ZERO, // BlendFactor::Zero
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GL_ONE, // BlendFactor::One
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GL_SRC_COLOR, // BlendFactor::SourceColor
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GL_ONE_MINUS_SRC_COLOR, // BlendFactor::OneMinusSourceColor
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GL_DST_COLOR, // BlendFactor::DestColor
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GL_ONE_MINUS_DST_COLOR, // BlendFactor::OneMinusDestColor
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GL_SRC_ALPHA, // BlendFactor::SourceAlpha
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GL_ONE_MINUS_SRC_ALPHA, // BlendFactor::OneMinusSourceAlpha
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GL_DST_ALPHA, // BlendFactor::DestAlpha
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GL_ONE_MINUS_DST_ALPHA, // BlendFactor::OneMinusDestAlpha
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GL_CONSTANT_COLOR, // BlendFactor::ConstantColor
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GL_ONE_MINUS_CONSTANT_COLOR, // BlendFactor::OneMinusConstantColor
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GL_CONSTANT_ALPHA, // BlendFactor::ConstantAlpha
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GL_ONE_MINUS_CONSTANT_ALPHA, // BlendFactor::OneMinusConstantAlpha
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GL_SRC_ALPHA_SATURATE, // BlendFactor::SourceAlphaSaturate
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};
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// Range check table for input
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if (static_cast<size_t>(factor) >= ARRAY_SIZE(blend_func_table)) {
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LOG_CRITICAL(Render_OpenGL, "Unknown blend factor %d", factor);
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UNREACHABLE();
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return GL_ONE;
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}
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return blend_func_table[(unsigned)factor];
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}
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inline GLenum LogicOp(Pica::FramebufferRegs::LogicOp op) {
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static const GLenum logic_op_table[] = {
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GL_CLEAR, // Clear
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GL_AND, // And
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GL_AND_REVERSE, // AndReverse
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GL_COPY, // Copy
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GL_SET, // Set
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GL_COPY_INVERTED, // CopyInverted
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GL_NOOP, // NoOp
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GL_INVERT, // Invert
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GL_NAND, // Nand
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GL_OR, // Or
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GL_NOR, // Nor
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GL_XOR, // Xor
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GL_EQUIV, // Equiv
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GL_AND_INVERTED, // AndInverted
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GL_OR_REVERSE, // OrReverse
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GL_OR_INVERTED, // OrInverted
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};
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// Range check table for input
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if (static_cast<size_t>(op) >= ARRAY_SIZE(logic_op_table)) {
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LOG_CRITICAL(Render_OpenGL, "Unknown logic op %d", op);
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UNREACHABLE();
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return GL_COPY;
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}
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return logic_op_table[(unsigned)op];
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}
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inline GLenum CompareFunc(Pica::FramebufferRegs::CompareFunc func) {
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static const GLenum compare_func_table[] = {
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GL_NEVER, // CompareFunc::Never
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GL_ALWAYS, // CompareFunc::Always
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GL_EQUAL, // CompareFunc::Equal
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GL_NOTEQUAL, // CompareFunc::NotEqual
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GL_LESS, // CompareFunc::LessThan
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GL_LEQUAL, // CompareFunc::LessThanOrEqual
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GL_GREATER, // CompareFunc::GreaterThan
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GL_GEQUAL, // CompareFunc::GreaterThanOrEqual
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};
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// Range check table for input
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if (static_cast<size_t>(func) >= ARRAY_SIZE(compare_func_table)) {
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LOG_CRITICAL(Render_OpenGL, "Unknown compare function %d", func);
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UNREACHABLE();
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return GL_ALWAYS;
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}
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return compare_func_table[(unsigned)func];
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}
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inline GLenum StencilOp(Pica::FramebufferRegs::StencilAction action) {
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static const GLenum stencil_op_table[] = {
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GL_KEEP, // StencilAction::Keep
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GL_ZERO, // StencilAction::Zero
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GL_REPLACE, // StencilAction::Replace
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GL_INCR, // StencilAction::Increment
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GL_DECR, // StencilAction::Decrement
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GL_INVERT, // StencilAction::Invert
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GL_INCR_WRAP, // StencilAction::IncrementWrap
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GL_DECR_WRAP, // StencilAction::DecrementWrap
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};
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// Range check table for input
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if (static_cast<size_t>(action) >= ARRAY_SIZE(stencil_op_table)) {
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LOG_CRITICAL(Render_OpenGL, "Unknown stencil op %d", action);
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UNREACHABLE();
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return GL_KEEP;
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}
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return stencil_op_table[(unsigned)action];
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}
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inline GLvec4 ColorRGBA8(const u32 color) {
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return {{
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(color >> 0 & 0xFF) / 255.0f, (color >> 8 & 0xFF) / 255.0f, (color >> 16 & 0xFF) / 255.0f,
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(color >> 24 & 0xFF) / 255.0f,
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}};
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}
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inline std::array<GLfloat, 3> LightColor(const Pica::LightingRegs::LightColor& color) {
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return {{
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color.r / 255.0f, color.g / 255.0f, color.b / 255.0f,
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}};
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}
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} // namespace
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