mirror of
https://github.com/TomHarte/CLK.git
synced 2024-07-04 18:29:40 +00:00
107 lines
2.6 KiB
C++
107 lines
2.6 KiB
C++
//
|
|
// ScanTargetVertexArrayAttributs.cpp
|
|
// Clock Signal
|
|
//
|
|
// Created by Thomas Harte on 11/11/2018.
|
|
// Copyright © 2018 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#include "ScanTarget.hpp"
|
|
|
|
using namespace Outputs::Display::OpenGL;
|
|
|
|
std::string ScanTarget::globals(ShaderType type) {
|
|
switch(type) {
|
|
case ShaderType::Scan:
|
|
return
|
|
"#version 150\n"
|
|
|
|
"uniform vec2 scale;"
|
|
"uniform float rowHeight;"
|
|
"uniform mat3 lumaChromaToRGB;"
|
|
"uniform mat3 rgbToLumaChroma;"
|
|
|
|
"in vec2 startPoint;"
|
|
"in float startDataX;"
|
|
"in float startCompositeAngle;"
|
|
|
|
"in vec2 endPoint;"
|
|
"in float endDataX;"
|
|
"in float endCompositeAngle;"
|
|
|
|
"in float dataY;"
|
|
"in float lineY;"
|
|
|
|
"void main(void) {"
|
|
"float lateral = float(gl_VertexID & 1);"
|
|
"float longitudinal = float((gl_VertexID & 2) >> 1);"
|
|
|
|
"vec2 centrePoint = mix(startPoint, endPoint, lateral) / scale;"
|
|
"vec2 height = normalize(endPoint - startPoint).yx * (longitudinal - 0.5) * rowHeight;"
|
|
"gl_Position = vec4(centrePoint + height, 0.0, 1.0);"
|
|
"}";
|
|
|
|
case ShaderType::Line:
|
|
return
|
|
"#version 150\n"
|
|
|
|
"in vec2 startPoint;"
|
|
"in vec2 endPoint;";
|
|
}
|
|
}
|
|
|
|
void ScanTarget::enable_vertex_attributes(ShaderType type, Shader &target) {
|
|
switch(type) {
|
|
case ShaderType::Scan:
|
|
for(int c = 0; c < 2; ++c) {
|
|
const std::string prefix = c ? "end" : "start";
|
|
|
|
target.enable_vertex_attribute_with_pointer(
|
|
prefix + "Point",
|
|
2, GL_UNSIGNED_SHORT, GL_FALSE,
|
|
sizeof(Scan),
|
|
reinterpret_cast<void *>(offsetof(Scan, scan.end_points[c].x)),
|
|
1);
|
|
target.enable_vertex_attribute_with_pointer(
|
|
prefix + "DataX",
|
|
1, GL_UNSIGNED_SHORT, GL_FALSE,
|
|
sizeof(Scan),
|
|
reinterpret_cast<void *>(offsetof(Scan, scan.end_points[c].data_offset)),
|
|
1);
|
|
target.enable_vertex_attribute_with_pointer(
|
|
prefix + "CompositeAngle",
|
|
1, GL_UNSIGNED_SHORT, GL_FALSE,
|
|
sizeof(Scan),
|
|
reinterpret_cast<void *>(offsetof(Scan, scan.end_points[c].composite_angle)),
|
|
1);
|
|
}
|
|
|
|
target.enable_vertex_attribute_with_pointer(
|
|
"dataY",
|
|
1, GL_UNSIGNED_SHORT, GL_FALSE,
|
|
sizeof(Scan),
|
|
reinterpret_cast<void *>(offsetof(Scan, data_y)),
|
|
1);
|
|
target.enable_vertex_attribute_with_pointer(
|
|
"lineY",
|
|
1, GL_UNSIGNED_SHORT, GL_FALSE,
|
|
sizeof(Scan),
|
|
reinterpret_cast<void *>(offsetof(Scan, line)),
|
|
1);
|
|
break;
|
|
|
|
case ShaderType::Line:
|
|
for(int c = 0; c < 2; ++c) {
|
|
const std::string prefix = c ? "end" : "start";
|
|
|
|
target.enable_vertex_attribute_with_pointer(
|
|
prefix + "Point",
|
|
2, GL_UNSIGNED_SHORT, GL_FALSE,
|
|
sizeof(Line),
|
|
reinterpret_cast<void *>(offsetof(Line, end_points[c].x)),
|
|
1);
|
|
}
|
|
break;
|
|
}
|
|
}
|