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CLK/Outputs/CRT/Internals/CRTConstants.hpp
2016-04-27 22:48:37 -04:00

51 lines
1.7 KiB
C++

//
// CRTContants.hpp
// Clock Signal
//
// Created by Thomas Harte on 19/03/2016.
// Copyright © 2016 Thomas Harte. All rights reserved.
//
#ifndef CRTConstants_h
#define CRTConstants_h
#include "OpenGL.hpp"
#include <cstddef>
namespace Outputs {
namespace CRT {
// Output vertices are those used to copy from an input buffer — whether it describes data that maps directly to RGB
// or is one of the intermediate buffers that we've used to convert from composite towards RGB.
const GLsizei OutputVertexOffsetOfPosition = 0;
const GLsizei OutputVertexOffsetOfTexCoord = 4;
const GLsizei OutputVertexOffsetOfLateral = 8;
const GLsizei OutputVertexSize = 12;
// Input vertices, used only in composite mode, map from the input buffer to temporary buffer locations; such
// remapping occurs to ensure a continous stream of data for each scan, giving correct out-of-bounds behaviour
const GLsizei SourceVertexOffsetOfInputPosition = 0;
const GLsizei SourceVertexOffsetOfOutputPosition = 4;
const GLsizei SourceVertexOffsetOfPhaseAmplitudeAndOffset = 8;
const GLsizei SourceVertexOffsetOfPhaseTime = 12;
const GLsizei SourceVertexSize = 16;
// These constants hold the size of the rolling buffer to which the CPU writes
const GLsizei InputBufferBuilderWidth = 2048;
const GLsizei InputBufferBuilderHeight = 1024;
// This is the size of the intermediate buffers used during composite to RGB conversion
const GLsizei IntermediateBufferWidth = 2048;
const GLsizei IntermediateBufferHeight = 2048;
// Some internal buffer sizes
const GLsizeiptr OutputVertexBufferDataSize = 89856; // a multiple of 6 * OutputVertexSize
const GLsizeiptr SourceVertexBufferDataSize = 87360; // a multiple of 2 * SourceVertexSize
}
}
#endif /* CRTContants_h */