mirror of
https://github.com/TomHarte/CLK.git
synced 2024-07-17 13:29:02 +00:00
58 lines
2.1 KiB
C++
58 lines
2.1 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
|
|
|
|
|
|
// Runs are divided discretely by vertical syncs in order to put a usable bounds on the uniform used to track
|
|
// run age; that therefore creates a discrete number of fields that are stored. This number should be the
|
|
// number of historic fields that are required fully to complete a frame. It should be at least two and not
|
|
// more than four.
|
|
const int NumberOfFields = 4;
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* CRTContants_h */
|