228 lines
8.5 KiB
C++
228 lines
8.5 KiB
C++
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Hardware renderer module.
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*
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*
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*
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* Authors: Joakim L. Gilje <jgilje@jgilje.net>
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* Cacodemon345
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* Teemu Korhonen
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*
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* Copyright 2021 Joakim L. Gilje
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* Copyright 2021-2022 Cacodemon345
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* Copyright 2021-2022 Teemu Korhonen
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*/
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#include "qt_hardwarerenderer.hpp"
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#include <QApplication>
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#include <QVector2D>
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#include <atomic>
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#include <vector>
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extern "C" {
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#include <86box/86box.h>
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#include <86box/plat.h>
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#include <86box/video.h>
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}
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void HardwareRenderer::resizeGL(int w, int h)
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{
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m_context->makeCurrent(this);
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glViewport(0, 0, qRound(w * devicePixelRatio()), qRound(h * devicePixelRatio()));
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}
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#define PROGRAM_VERTEX_ATTRIBUTE 0
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#define PROGRAM_TEXCOORD_ATTRIBUTE 1
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void HardwareRenderer::initializeGL()
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{
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m_context->makeCurrent(this);
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initializeOpenGLFunctions();
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m_texture = new QOpenGLTexture(QImage(2048,2048, QImage::Format::Format_RGB32));
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m_blt = new QOpenGLTextureBlitter;
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m_blt->setRedBlueSwizzle(true);
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m_blt->create();
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QOpenGLShader *vshader = new QOpenGLShader(QOpenGLShader::Vertex, this);
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const char *vsrc =
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"attribute highp vec4 VertexCoord;\n"
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"attribute mediump vec4 TexCoord;\n"
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"varying mediump vec4 texc;\n"
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"uniform mediump mat4 MVPMatrix;\n"
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"void main(void)\n"
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"{\n"
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" gl_Position = MVPMatrix * VertexCoord;\n"
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" texc = TexCoord;\n"
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"}\n";
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QString vsrccore =
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"in highp vec4 VertexCoord;\n"
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"in mediump vec4 TexCoord;\n"
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"out mediump vec4 texc;\n"
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"uniform mediump mat4 MVPMatrix;\n"
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"void main(void)\n"
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"{\n"
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" gl_Position = MVPMatrix * VertexCoord;\n"
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" texc = TexCoord;\n"
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"}\n";
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if (m_context->isOpenGLES() && m_context->format().version() >= qMakePair(3, 0))
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{
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vsrccore.prepend("#version 300 es\n");
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vshader->compileSourceCode(vsrccore);
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}
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else if (m_context->format().version() >= qMakePair(3, 0) && m_context->format().profile() == QSurfaceFormat::CoreProfile)
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{
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vsrccore.prepend("#version 130\n");
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vshader->compileSourceCode(vsrccore);
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}
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else vshader->compileSourceCode(vsrc);
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QOpenGLShader *fshader = new QOpenGLShader(QOpenGLShader::Fragment, this);
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const char *fsrc =
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"uniform sampler2D texture;\n"
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"varying mediump vec4 texc;\n"
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"void main(void)\n"
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"{\n"
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" gl_FragColor = texture2D(texture, texc.st).bgra;\n"
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"}\n";
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QString fsrccore =
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"uniform sampler2D texture;\n"
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"in mediump vec4 texc;\n"
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"out highp vec4 FragColor;\n"
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"void main(void)\n"
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"{\n"
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" FragColor = texture2D(texture, texc.st).bgra;\n"
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"}\n";
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if (m_context->isOpenGLES() && m_context->format().version() >= qMakePair(3, 0))
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{
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fsrccore.prepend("#version 300 es\n");
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fshader->compileSourceCode(fsrccore);
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}
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else if (m_context->format().version() >= qMakePair(3, 0) && m_context->format().profile() == QSurfaceFormat::CoreProfile)
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{
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fsrccore.prepend("#version 130\n");
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fshader->compileSourceCode(fsrccore);
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}
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else fshader->compileSourceCode(fsrc);
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m_prog = new QOpenGLShaderProgram;
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m_prog->addShader(vshader);
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m_prog->addShader(fshader);
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m_prog->bindAttributeLocation("VertexCoord", PROGRAM_VERTEX_ATTRIBUTE);
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m_prog->bindAttributeLocation("TexCoord", PROGRAM_TEXCOORD_ATTRIBUTE);
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m_prog->link();
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m_prog->bind();
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m_prog->setUniformValue("texture", 0);
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if (m_context->format().version() >= qMakePair(3, 0) && m_vao.create()) {
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m_vao.bind();
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}
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m_vbo[PROGRAM_VERTEX_ATTRIBUTE].create();
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m_vbo[PROGRAM_VERTEX_ATTRIBUTE].bind();
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m_vbo[PROGRAM_VERTEX_ATTRIBUTE].allocate(sizeof(QVector2D) * 4);
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m_vbo[PROGRAM_TEXCOORD_ATTRIBUTE].create();
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m_vbo[PROGRAM_TEXCOORD_ATTRIBUTE].bind();
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m_vbo[PROGRAM_TEXCOORD_ATTRIBUTE].allocate(sizeof(QVector2D) * 4);
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pclog("OpenGL vendor: %s\n", glGetString(GL_VENDOR));
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pclog("OpenGL renderer: %s\n", glGetString(GL_RENDERER));
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pclog("OpenGL version: %s\n", glGetString(GL_VERSION));
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pclog("OpenGL shader language version: %s\n", glGetString(GL_SHADING_LANGUAGE_VERSION));
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glClearColor(0, 0, 0, 1);
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m_texture->setWrapMode(QOpenGLTexture::ClampToEdge);
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}
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void HardwareRenderer::paintGL() {
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m_context->makeCurrent(this);
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glClear(GL_COLOR_BUFFER_BIT);
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QVector<QVector2D> verts, texcoords;
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QMatrix4x4 mat;
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mat.setToIdentity();
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mat.ortho(QRectF(0, 0, (qreal)width(), (qreal)height()));
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verts.push_back(QVector2D((float)destination.x(), (float)destination.y()));
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verts.push_back(QVector2D((float)destination.x(), (float)destination.y() + (float)destination.height()));
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verts.push_back(QVector2D((float)destination.x() + (float)destination.width(), (float)destination.y() + (float)destination.height()));
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verts.push_back(QVector2D((float)destination.x() + (float)destination.width(), (float)destination.y()));
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texcoords.push_back(QVector2D((float)source.x() / 2048.f, (float)(source.y()) / 2048.f));
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texcoords.push_back(QVector2D((float)source.x() / 2048.f, (float)(source.y() + source.height()) / 2048.f));
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texcoords.push_back(QVector2D((float)(source.x() + source.width()) / 2048.f, (float)(source.y() + source.height()) / 2048.f));
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texcoords.push_back(QVector2D((float)(source.x() + source.width()) / 2048.f, (float)(source.y()) / 2048.f));
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m_vbo[PROGRAM_VERTEX_ATTRIBUTE].bind(); m_vbo[PROGRAM_VERTEX_ATTRIBUTE].write(0, verts.data(), sizeof(QVector2D) * 4); m_vbo[PROGRAM_VERTEX_ATTRIBUTE].release();
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m_vbo[PROGRAM_TEXCOORD_ATTRIBUTE].bind(); m_vbo[PROGRAM_TEXCOORD_ATTRIBUTE].write(0, texcoords.data(), sizeof(QVector2D) * 4); m_vbo[PROGRAM_TEXCOORD_ATTRIBUTE].release();
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m_prog->setUniformValue("MVPMatrix", mat);
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m_prog->enableAttributeArray(PROGRAM_VERTEX_ATTRIBUTE);
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m_prog->enableAttributeArray(PROGRAM_TEXCOORD_ATTRIBUTE);
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m_vbo[PROGRAM_VERTEX_ATTRIBUTE].bind(); m_prog->setAttributeBuffer(PROGRAM_VERTEX_ATTRIBUTE, GL_FLOAT, 0, 2, 0); m_vbo[PROGRAM_VERTEX_ATTRIBUTE].release();
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m_vbo[PROGRAM_TEXCOORD_ATTRIBUTE].bind(); m_prog->setAttributeBuffer(PROGRAM_TEXCOORD_ATTRIBUTE, GL_FLOAT, 0, 2, 0); m_vbo[PROGRAM_TEXCOORD_ATTRIBUTE].release();
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m_texture->bind();
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m_texture->setMinMagFilters(video_filter_method ? QOpenGLTexture::Linear : QOpenGLTexture::Nearest, video_filter_method ? QOpenGLTexture::Linear : QOpenGLTexture::Nearest);
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glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
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}
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void HardwareRenderer::setRenderType(RenderType type) {
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QSurfaceFormat format;
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switch (type) {
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case RenderType::OpenGL3:
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format.setVersion(3, 0);
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format.setProfile(QSurfaceFormat::CoreProfile);
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case RenderType::OpenGL:
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format.setRenderableType(QSurfaceFormat::OpenGL);
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break;
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case RenderType::OpenGLES:
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format.setRenderableType(QSurfaceFormat::OpenGLES);
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break;
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}
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format.setSwapInterval(0);
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setFormat(format);
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}
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void HardwareRenderer::onBlit(int buf_idx, int x, int y, int w, int h) {
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auto tval = this;
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void* nuldata = 0;
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if (memcmp(&tval, &nuldata, sizeof(void*)) == 0) return;
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auto origSource = source;
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if (!m_texture || !m_texture->isCreated())
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{
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buf_usage[buf_idx].clear();
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source.setRect(x, y, w, h);
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return;
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}
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m_context->makeCurrent(this);
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m_texture->setData(QOpenGLTexture::PixelFormat::RGBA, QOpenGLTexture::PixelType::UInt8, (const void*)imagebufs[buf_idx].get());
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buf_usage[buf_idx].clear();
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source.setRect(x, y, w, h);
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if (origSource != source) onResize(this->width(), this->height());
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update();
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}
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void HardwareRenderer::resizeEvent(QResizeEvent *event) {
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onResize(width(), height());
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QOpenGLWindow::resizeEvent(event);
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}
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bool HardwareRenderer::event(QEvent *event)
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{
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bool res = false;
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if (!eventDelegate(event, res)) return QOpenGLWindow::event(event);
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return res;
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}
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std::vector<std::tuple<uint8_t*, std::atomic_flag*>> HardwareRenderer::getBuffers()
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{
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std::vector<std::tuple<uint8_t*, std::atomic_flag*>> buffers;
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buffers.push_back(std::make_tuple(imagebufs[0].get(), &buf_usage[0]));
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buffers.push_back(std::make_tuple(imagebufs[1].get(), &buf_usage[1]));
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return buffers;
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}
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