mirror of
https://github.com/f4exb/sdrangel.git
synced 2025-11-03 21:20:31 -05:00
8b5a5b7f70
Frees memory allocated in TVScreenAnalog::initializeGL() /home/daniele/Programmazione/ham/sdrangel/sdrgui/gui/tvscreenanalog.cpp:232 in TVScreenAnalog::initializeTextures(TVScreenAnalogBuffer*) /home/daniele/Programmazione/ham/sdrangel/sdrgui/gui/tvscreenanalog.cpp:285 in TVScreenAnalog::initializeTextures(TVScreenAnalogBuffer*) /home/daniele/Programmazione/ham/sdrangel/sdrgui/gui/tvscreenanalog.cpp:286
420 lines
14 KiB
C++
420 lines
14 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2020, 2022 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
|
|
// Copyright (C) 2020 Vort <vvort@yandex.ru> //
|
|
// Copyright (C) 2022-2023 Jon Beniston, M7RCE <jon@beniston.com> //
|
|
// Copyright (C) 2018 F4HKW //
|
|
// for F4EXB / SDRAngel //
|
|
// //
|
|
// OpenGL interface modernization. //
|
|
// //
|
|
// This program is free software; you can redistribute it and/or modify //
|
|
// it under the terms of the GNU General Public License as published by //
|
|
// the Free Software Foundation as version 3 of the License, or //
|
|
// (at your option) any later version. //
|
|
// //
|
|
// This program is distributed in the hope that it will be useful, //
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
|
// GNU General Public License V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "tvscreenanalog.h"
|
|
|
|
static const char* vertexShaderSource2 =
|
|
"attribute highp vec4 vertex;\n"
|
|
"attribute highp vec2 texCoord;\n"
|
|
"varying highp vec2 texCoordVar;\n"
|
|
"void main() {\n"
|
|
" gl_Position = vertex;\n"
|
|
" texCoordVar = texCoord;\n"
|
|
"}\n";
|
|
|
|
static const char* vertexShaderSource =
|
|
"#version 330\n"
|
|
"in highp vec4 vertex;\n"
|
|
"in highp vec2 texCoord;\n"
|
|
"out highp vec2 texCoordVar;\n"
|
|
"void main() {\n"
|
|
" gl_Position = vertex;\n"
|
|
" texCoordVar = texCoord;\n"
|
|
"}\n";
|
|
|
|
static const char* fragmentShaderSource2 =
|
|
"uniform highp sampler2D tex1;\n"
|
|
"uniform highp sampler2D tex2;\n"
|
|
"uniform highp float imw;\n"
|
|
"uniform highp float imh;\n"
|
|
"uniform highp float tlw;\n"
|
|
"uniform highp float tlh;\n"
|
|
"varying highp vec2 texCoordVar;\n"
|
|
"void main() {\n"
|
|
" float tlhw = 0.5 * tlw;"
|
|
" float tlhh = 0.5 * tlh;"
|
|
" float tys = (texCoordVar.y + tlhh) * imh;\n"
|
|
" float p1y = floor(tys) * tlh - tlhh;\n"
|
|
" float p3y = p1y + tlh;\n"
|
|
" float tshift1 = texture2D(tex2, vec2(0.0, p1y)).r;\n"
|
|
" float tshift3 = texture2D(tex2, vec2(0.0, p3y)).r;\n"
|
|
" float shift1 = (1.0 - tshift1 * 2.0) * tlw;\n"
|
|
" float shift3 = (1.0 - tshift3 * 2.0) * tlw;\n"
|
|
" float txs1 = (texCoordVar.x + shift1 + tlhw) * imw;\n"
|
|
" float txs3 = (texCoordVar.x + shift3 + tlhw) * imw;\n"
|
|
" float p1x = floor(txs1) * tlw - tlhw;\n"
|
|
" float p3x = floor(txs3) * tlw - tlhw;\n"
|
|
" float p2x = p1x + tlw;\n"
|
|
" float p4x = p3x + tlw;\n"
|
|
" float p1 = texture2D(tex1, vec2(p1x, p1y)).r;\n"
|
|
" float p2 = texture2D(tex1, vec2(p2x, p1y)).r;\n"
|
|
" float p3 = texture2D(tex1, vec2(p3x, p3y)).r;\n"
|
|
" float p4 = texture2D(tex1, vec2(p4x, p3y)).r;\n"
|
|
" float p12 = mix(p1, p2, fract(txs1));\n"
|
|
" float p34 = mix(p3, p4, fract(txs3));\n"
|
|
" float p = mix(p12, p34, fract(tys));\n"
|
|
" gl_FragColor = vec4(p);\n"
|
|
"}\n";
|
|
|
|
static const char* fragmentShaderSource =
|
|
"#version 330\n"
|
|
"uniform highp sampler2D tex1;\n"
|
|
"uniform highp sampler2D tex2;\n"
|
|
"uniform highp float imw;\n"
|
|
"uniform highp float imh;\n"
|
|
"uniform highp float tlw;\n"
|
|
"uniform highp float tlh;\n"
|
|
"in highp vec2 texCoordVar;\n"
|
|
"out vec4 fragColor;\n"
|
|
"void main() {\n"
|
|
" float tlhw = 0.5 * tlw;"
|
|
" float tlhh = 0.5 * tlh;"
|
|
" float tys = (texCoordVar.y + tlhh) * imh;\n"
|
|
" float p1y = floor(tys) * tlh - tlhh;\n"
|
|
" float p3y = p1y + tlh;\n"
|
|
" float tshift1 = texture(tex2, vec2(0.0, p1y)).r;\n"
|
|
" float tshift3 = texture(tex2, vec2(0.0, p3y)).r;\n"
|
|
" float shift1 = (1.0 - tshift1 * 2.0) * tlw;\n"
|
|
" float shift3 = (1.0 - tshift3 * 2.0) * tlw;\n"
|
|
" float txs1 = (texCoordVar.x + shift1 + tlhw) * imw;\n"
|
|
" float txs3 = (texCoordVar.x + shift3 + tlhw) * imw;\n"
|
|
" float p1x = floor(txs1) * tlw - tlhw;\n"
|
|
" float p3x = floor(txs3) * tlw - tlhw;\n"
|
|
" float p2x = p1x + tlw;\n"
|
|
" float p4x = p3x + tlw;\n"
|
|
" float p1 = texture(tex1, vec2(p1x, p1y)).r;\n"
|
|
" float p2 = texture(tex1, vec2(p2x, p1y)).r;\n"
|
|
" float p3 = texture(tex1, vec2(p3x, p3y)).r;\n"
|
|
" float p4 = texture(tex1, vec2(p4x, p3y)).r;\n"
|
|
" float p12 = mix(p1, p2, fract(txs1));\n"
|
|
" float p34 = mix(p3, p4, fract(txs3));\n"
|
|
" float p = mix(p12, p34, fract(tys));\n"
|
|
" fragColor = vec4(p);\n"
|
|
"}\n";
|
|
|
|
TVScreenAnalog::TVScreenAnalog(QWidget *parent) :
|
|
QOpenGLWidget(parent),
|
|
m_shader(nullptr),
|
|
m_vao(nullptr),
|
|
m_verticesBuf(nullptr),
|
|
m_textureCoordsBuf(nullptr),
|
|
m_imageTexture(nullptr),
|
|
m_lineShiftsTexture(nullptr)
|
|
{
|
|
m_isDataChanged = false;
|
|
m_frontBuffer = new TVScreenAnalogBuffer(5, 1);
|
|
m_backBuffer = new TVScreenAnalogBuffer(5, 1);
|
|
|
|
connect(&m_updateTimer, SIGNAL(timeout()), this, SLOT(tick()));
|
|
m_updateTimer.start(40); // capped at 25 FPS
|
|
}
|
|
|
|
TVScreenAnalog::~TVScreenAnalog()
|
|
{
|
|
cleanup();
|
|
delete m_backBuffer;
|
|
delete m_frontBuffer;
|
|
}
|
|
|
|
void TVScreenAnalog::cleanup()
|
|
{
|
|
if (!QOpenGLContext::currentContext()) {
|
|
return;
|
|
}
|
|
|
|
if (m_shader)
|
|
{
|
|
delete m_shader;
|
|
m_shader = nullptr;
|
|
}
|
|
|
|
if (m_imageTexture)
|
|
{
|
|
delete m_imageTexture;
|
|
m_imageTexture = nullptr;
|
|
}
|
|
|
|
if (m_lineShiftsTexture)
|
|
{
|
|
delete m_lineShiftsTexture;
|
|
m_lineShiftsTexture = nullptr;
|
|
}
|
|
|
|
delete m_verticesBuf;
|
|
m_verticesBuf = nullptr;
|
|
delete m_textureCoordsBuf;
|
|
m_textureCoordsBuf = nullptr;
|
|
delete m_vao;
|
|
m_vao = nullptr;
|
|
}
|
|
|
|
TVScreenAnalogBuffer *TVScreenAnalog::getBackBuffer()
|
|
{
|
|
return m_backBuffer;
|
|
}
|
|
|
|
void TVScreenAnalog::resizeTVScreen(int intCols, int intRows)
|
|
{
|
|
qDebug("TVScreenAnalog::resizeTVScreen: cols: %d, rows: %d", intCols, intRows);
|
|
|
|
int colsAdj = intCols + 4;
|
|
QMutexLocker lock(&m_buffersMutex);
|
|
if (m_frontBuffer->getWidth() != colsAdj || m_frontBuffer->getHeight() != intRows)
|
|
{
|
|
delete m_backBuffer;
|
|
delete m_frontBuffer;
|
|
m_frontBuffer = new TVScreenAnalogBuffer(colsAdj, intRows);
|
|
m_backBuffer = new TVScreenAnalogBuffer(colsAdj, intRows);
|
|
}
|
|
}
|
|
|
|
void TVScreenAnalog::resizeGL(int intWidth, int intHeight)
|
|
{
|
|
glViewport(0, 0, intWidth, intHeight);
|
|
}
|
|
|
|
void TVScreenAnalog::initializeGL()
|
|
{
|
|
initializeOpenGLFunctions();
|
|
|
|
connect(
|
|
QOpenGLContext::currentContext(),
|
|
&QOpenGLContext::aboutToBeDestroyed,
|
|
this,
|
|
&TVScreenAnalog::cleanup
|
|
);
|
|
|
|
m_shader = new QOpenGLShaderProgram(this);
|
|
|
|
int majorVersion = 0, minorVersion = 0;
|
|
if (QOpenGLContext::currentContext())
|
|
{
|
|
majorVersion = QOpenGLContext::currentContext()->format().majorVersion();
|
|
minorVersion = QOpenGLContext::currentContext()->format().minorVersion();
|
|
}
|
|
if ((majorVersion > 3) || ((majorVersion == 3) && (minorVersion >= 3)))
|
|
{
|
|
if (!m_shader->addShaderFromSourceCode(QOpenGLShader::Vertex, vertexShaderSource))
|
|
{
|
|
qWarning()
|
|
<< "TVScreenAnalog::initializeGL: error in vertex shader:"
|
|
<< m_shader->log();
|
|
return;
|
|
}
|
|
|
|
if (!m_shader->addShaderFromSourceCode(QOpenGLShader::Fragment, fragmentShaderSource))
|
|
{
|
|
qWarning()
|
|
<< "TVScreenAnalog::initializeGL: error in fragment shader:"
|
|
<< m_shader->log();
|
|
return;
|
|
}
|
|
|
|
m_vao = new QOpenGLVertexArrayObject();
|
|
m_vao->create();
|
|
m_vao->bind();
|
|
}
|
|
else
|
|
{
|
|
if (!m_shader->addShaderFromSourceCode(QOpenGLShader::Vertex, vertexShaderSource2))
|
|
{
|
|
qWarning()
|
|
<< "TVScreenAnalog::initializeGL: error in vertex shader:"
|
|
<< m_shader->log();
|
|
return;
|
|
}
|
|
|
|
if (!m_shader->addShaderFromSourceCode(QOpenGLShader::Fragment, fragmentShaderSource2))
|
|
{
|
|
qWarning()
|
|
<< "TVScreenAnalog::initializeGL: error in fragment shader:"
|
|
<< m_shader->log();
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (!m_shader->link())
|
|
{
|
|
qWarning()
|
|
<< "TVScreenAnalog::initializeGL: error linking shader:"
|
|
<< m_shader->log();
|
|
return;
|
|
}
|
|
|
|
m_vertexAttribIndex = m_shader->attributeLocation("vertex");
|
|
m_texCoordAttribIndex = m_shader->attributeLocation("texCoord");
|
|
m_textureLoc1 = m_shader->uniformLocation("tex1");
|
|
m_textureLoc2 = m_shader->uniformLocation("tex2");
|
|
m_imageWidthLoc = m_shader->uniformLocation("imw");
|
|
m_imageHeightLoc = m_shader->uniformLocation("imh");
|
|
m_texelWidthLoc = m_shader->uniformLocation("tlw");
|
|
m_texelHeightLoc = m_shader->uniformLocation("tlh");
|
|
if (m_vao)
|
|
{
|
|
m_verticesBuf = new QOpenGLBuffer(QOpenGLBuffer::VertexBuffer);
|
|
m_verticesBuf->setUsagePattern(QOpenGLBuffer::DynamicDraw);
|
|
m_verticesBuf->create();
|
|
m_textureCoordsBuf = new QOpenGLBuffer(QOpenGLBuffer::VertexBuffer);
|
|
m_textureCoordsBuf->setUsagePattern(QOpenGLBuffer::DynamicDraw);
|
|
m_textureCoordsBuf->create();
|
|
m_vao->release();
|
|
}
|
|
}
|
|
|
|
void TVScreenAnalog::initializeTextures(TVScreenAnalogBuffer *buffer)
|
|
{
|
|
m_imageTexture = new QOpenGLTexture(QOpenGLTexture::Target2D);
|
|
m_lineShiftsTexture = new QOpenGLTexture(QOpenGLTexture::Target2D);
|
|
m_imageTexture->setSize(buffer->getWidth(), buffer->getHeight());
|
|
m_lineShiftsTexture->setSize(1, buffer->getHeight());
|
|
m_imageTexture->setFormat(QOpenGLTexture::RGBA8_UNorm);
|
|
m_lineShiftsTexture->setFormat(QOpenGLTexture::RGBA8_UNorm);
|
|
m_imageTexture->setAutoMipMapGenerationEnabled(false);
|
|
m_lineShiftsTexture->setAutoMipMapGenerationEnabled(false);
|
|
m_imageTexture->allocateStorage(QOpenGLTexture::RGBA, QOpenGLTexture::UInt8);
|
|
m_lineShiftsTexture->allocateStorage(QOpenGLTexture::RGBA, QOpenGLTexture::UInt8);
|
|
|
|
m_imageTexture->setMinificationFilter(QOpenGLTexture::Nearest);
|
|
m_imageTexture->setMagnificationFilter(QOpenGLTexture::Nearest);
|
|
m_lineShiftsTexture->setMinificationFilter(QOpenGLTexture::Nearest);
|
|
m_lineShiftsTexture->setMagnificationFilter(QOpenGLTexture::Nearest);
|
|
m_imageTexture->setWrapMode(QOpenGLTexture::DirectionS, QOpenGLTexture::ClampToBorder);
|
|
m_imageTexture->setWrapMode(QOpenGLTexture::DirectionT, QOpenGLTexture::ClampToEdge);
|
|
m_lineShiftsTexture->setWrapMode(QOpenGLTexture::DirectionS, QOpenGLTexture::Repeat);
|
|
m_lineShiftsTexture->setWrapMode(QOpenGLTexture::DirectionT, QOpenGLTexture::ClampToEdge);
|
|
}
|
|
|
|
TVScreenAnalogBuffer *TVScreenAnalog::swapBuffers()
|
|
{
|
|
QMutexLocker lock(&m_buffersMutex);
|
|
std::swap(m_frontBuffer, m_backBuffer);
|
|
m_isDataChanged = true;
|
|
return m_backBuffer;
|
|
}
|
|
|
|
void TVScreenAnalog::tick()
|
|
{
|
|
if (m_isDataChanged)
|
|
{
|
|
update();
|
|
}
|
|
}
|
|
|
|
void TVScreenAnalog::paintGL()
|
|
{
|
|
m_isDataChanged = false;
|
|
|
|
if (!m_shader)
|
|
{
|
|
glClearColor(0.2f, 0.0f, 0.0f, 1.0f);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
return;
|
|
}
|
|
|
|
TVScreenAnalogBuffer *buffer = m_frontBuffer;
|
|
|
|
if (!m_imageTexture ||
|
|
m_imageTexture->width() != buffer->getWidth() ||
|
|
m_imageTexture->height() != buffer->getHeight())
|
|
{
|
|
initializeTextures(buffer);
|
|
}
|
|
|
|
float imageWidth = buffer->getWidth();
|
|
float imageHeight = buffer->getHeight();
|
|
float texelWidth = 1.0f / imageWidth;
|
|
float texelHeight = 1.0f / imageHeight;
|
|
|
|
m_shader->bind();
|
|
m_shader->setUniformValue(m_textureLoc1, 0);
|
|
m_shader->setUniformValue(m_textureLoc2, 1);
|
|
m_shader->setUniformValue(m_imageWidthLoc, imageWidth);
|
|
m_shader->setUniformValue(m_imageHeightLoc, imageHeight);
|
|
m_shader->setUniformValue(m_texelWidthLoc, texelWidth);
|
|
m_shader->setUniformValue(m_texelHeightLoc, texelHeight);
|
|
|
|
glActiveTexture(GL_TEXTURE0);
|
|
m_imageTexture->bind();
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0,
|
|
buffer->getWidth(), buffer->getHeight(), GL_RGBA, GL_UNSIGNED_BYTE, buffer->getImageData());
|
|
|
|
glActiveTexture(GL_TEXTURE1);
|
|
m_lineShiftsTexture->bind();
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0,
|
|
1, buffer->getHeight(), GL_RGBA, GL_UNSIGNED_BYTE, buffer->getLineShiftData());
|
|
|
|
float rectHalfWidth = 1.0f + 4.0f / (imageWidth - 4.0f);
|
|
GLfloat vertices[] =
|
|
{
|
|
-rectHalfWidth, -1.0f,
|
|
-rectHalfWidth, 1.0f,
|
|
rectHalfWidth, 1.0f,
|
|
rectHalfWidth, -1.0f
|
|
};
|
|
|
|
static const GLfloat arrTextureCoords[] =
|
|
{
|
|
0.0f, 1.0f,
|
|
0.0f, 0.0f,
|
|
1.0f, 0.0f,
|
|
1.0f, 1.0f
|
|
};
|
|
|
|
if (m_vao)
|
|
{
|
|
m_vao->bind();
|
|
|
|
m_verticesBuf->bind();
|
|
m_verticesBuf->allocate(vertices, 4 * 2 * sizeof(GL_FLOAT));
|
|
m_shader->enableAttributeArray(m_vertexAttribIndex);
|
|
m_shader->setAttributeBuffer(m_vertexAttribIndex, GL_FLOAT, 0, 2);
|
|
|
|
// As these coords are constant, this could be moved into the init method
|
|
m_textureCoordsBuf->bind();
|
|
m_textureCoordsBuf->allocate(arrTextureCoords, 4 * 2 * sizeof(GL_FLOAT));
|
|
m_shader->enableAttributeArray(m_texCoordAttribIndex);
|
|
m_shader->setAttributeBuffer(m_texCoordAttribIndex, GL_FLOAT, 0, 2);
|
|
}
|
|
else
|
|
{
|
|
glVertexAttribPointer(m_vertexAttribIndex, 2, GL_FLOAT, GL_FALSE, 0, vertices);
|
|
glEnableVertexAttribArray(m_vertexAttribIndex);
|
|
glVertexAttribPointer(m_texCoordAttribIndex, 2, GL_FLOAT, GL_FALSE, 0, arrTextureCoords);
|
|
glEnableVertexAttribArray(m_texCoordAttribIndex);
|
|
}
|
|
|
|
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
|
|
|
|
if (m_vao)
|
|
{
|
|
m_vao->release();
|
|
}
|
|
else
|
|
{
|
|
glDisableVertexAttribArray(m_vertexAttribIndex);
|
|
glDisableVertexAttribArray(m_texCoordAttribIndex);
|
|
}
|
|
|
|
m_shader->release();
|
|
}
|