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dce52d740d
For now, just the raw scans, direct to the framebuffer, with no intermediate processing. But it seems to prove that at least some of the proper data is reaching the GPU.
109 lines
2.6 KiB
C++
109 lines
2.6 KiB
C++
//
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// ScanTargetVertexArrayAttributs.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 11/11/2018.
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// Copyright © 2018 Thomas Harte. All rights reserved.
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//
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#include "ScanTarget.hpp"
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using namespace Outputs::Display::OpenGL;
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std::string ScanTarget::globals(ShaderType type) {
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switch(type) {
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case ShaderType::Scan:
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return
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"#version 150\n"
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"uniform vec2 scale;"
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"uniform float rowHeight;"
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"uniform mat3 lumaChromaToRGB;"
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"uniform mat3 rgbToLumaChroma;"
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"in vec2 startPoint;"
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"in float startDataX;"
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"in float startCompositeAngle;"
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"in vec2 endPoint;"
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"in float endDataX;"
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"in float endCompositeAngle;"
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"in float dataY;"
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"in float lineY;"
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"void main(void) {"
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"float lateral = float(gl_VertexID & 1);"
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"float longitudinal = float((gl_VertexID & 2) >> 1);"
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"vec2 vPosition = vec2("
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"mix(startPoint.x, endPoint.x, lateral),"
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"mix(startPoint.y, endPoint.y, longitudinal)"
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") / scale;"
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"gl_Position = vec4(vPosition, 0.0, 1.0);"
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"}";
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case ShaderType::Line:
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return
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"#version 150\n"
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"in vec2 startPoint;"
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"in vec2 endPoint;";
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}
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}
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void ScanTarget::enable_vertex_attributes(ShaderType type, Shader &target) {
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switch(type) {
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case ShaderType::Scan:
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for(int c = 0; c < 2; ++c) {
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const std::string prefix = c ? "end" : "start";
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target.enable_vertex_attribute_with_pointer(
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prefix + "Point",
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2, GL_UNSIGNED_SHORT, GL_FALSE,
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sizeof(Scan),
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reinterpret_cast<void *>(offsetof(Scan, scan.end_points[c].x)),
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1);
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target.enable_vertex_attribute_with_pointer(
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prefix + "DataX",
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1, GL_UNSIGNED_SHORT, GL_FALSE,
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sizeof(Scan),
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reinterpret_cast<void *>(offsetof(Scan, scan.end_points[c].data_offset)),
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1);
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target.enable_vertex_attribute_with_pointer(
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prefix + "CompositeAngle",
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1, GL_UNSIGNED_SHORT, GL_FALSE,
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sizeof(Scan),
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reinterpret_cast<void *>(offsetof(Scan, scan.end_points[c].composite_angle)),
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1);
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}
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target.enable_vertex_attribute_with_pointer(
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"dataY",
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1, GL_UNSIGNED_SHORT, GL_FALSE,
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sizeof(Scan),
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reinterpret_cast<void *>(offsetof(Scan, data_y)),
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1);
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target.enable_vertex_attribute_with_pointer(
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"lineY",
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1, GL_UNSIGNED_SHORT, GL_FALSE,
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sizeof(Scan),
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reinterpret_cast<void *>(offsetof(Scan, line)),
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1);
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break;
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case ShaderType::Line:
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for(int c = 0; c < 2; ++c) {
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const std::string prefix = c ? "end" : "start";
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target.enable_vertex_attribute_with_pointer(
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prefix + "Point",
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2, GL_UNSIGNED_SHORT, GL_FALSE,
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sizeof(Line),
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reinterpret_cast<void *>(offsetof(Line, end_points[c].x)),
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1);
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}
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break;
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}
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}
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