mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-27 02:09:14 -05:00
330 lines
8.7 KiB
C++
330 lines
8.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2017 F4HKW //
|
|
// for F4EXB / SDRAngel //
|
|
// //
|
|
// 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 <QOpenGLContext>
|
|
|
|
#include "gui/glshadertvarray.h"
|
|
|
|
const QString GLShaderTVArray::m_strVertexShaderSourceArray = QString(
|
|
"uniform highp mat4 uMatrix;\n"
|
|
"attribute highp vec4 vertex;\n"
|
|
"attribute highp vec2 texCoord;\n"
|
|
"varying mediump vec2 texCoordVar;\n"
|
|
"void main() {\n"
|
|
" gl_Position = uMatrix * vertex;\n"
|
|
" texCoordVar = texCoord;\n"
|
|
"}\n");
|
|
|
|
const QString GLShaderTVArray::m_strFragmentShaderSourceColored = QString(
|
|
"uniform lowp sampler2D uTexture;\n"
|
|
"varying mediump vec2 texCoordVar;\n"
|
|
"void main() {\n"
|
|
" gl_FragColor = texture2D(uTexture, texCoordVar);\n"
|
|
"}\n");
|
|
|
|
GLShaderTVArray::GLShaderTVArray(bool blnColor) : m_blnColor(blnColor)
|
|
{
|
|
m_blnAlphaBlend = false;
|
|
m_blnAlphaReset = false;
|
|
m_objProgram = nullptr;
|
|
m_objImage = nullptr;
|
|
m_objTexture = nullptr;
|
|
m_intCols = 0;
|
|
m_intRows = 0;
|
|
m_blnInitialized = false;
|
|
m_objCurrentRow = nullptr;
|
|
|
|
m_textureLoc = 0;
|
|
m_matrixLoc = 0;
|
|
}
|
|
|
|
GLShaderTVArray::~GLShaderTVArray()
|
|
{
|
|
cleanup();
|
|
}
|
|
|
|
void GLShaderTVArray::initializeGL(int intCols, int intRows)
|
|
{
|
|
QMatrix4x4 objQMatrix;
|
|
|
|
m_blnInitialized = false;
|
|
|
|
m_intCols = 0;
|
|
m_intRows = 0;
|
|
|
|
m_objCurrentRow = nullptr;
|
|
|
|
if (!m_objProgram)
|
|
{
|
|
m_objProgram = new QOpenGLShaderProgram();
|
|
|
|
if (!m_objProgram->addShaderFromSourceCode(QOpenGLShader::Vertex,
|
|
m_strVertexShaderSourceArray))
|
|
{
|
|
qDebug() << "GLShaderArray::initializeGL: error in vertex shader: "
|
|
<< m_objProgram->log();
|
|
}
|
|
|
|
if (!m_objProgram->addShaderFromSourceCode(QOpenGLShader::Fragment,
|
|
m_strFragmentShaderSourceColored))
|
|
{
|
|
qDebug()
|
|
<< "GLShaderArray::initializeGL: error in fragment shader: "
|
|
<< m_objProgram->log();
|
|
}
|
|
|
|
m_objProgram->bindAttributeLocation("vertex", 0);
|
|
|
|
if (!m_objProgram->link())
|
|
{
|
|
qDebug() << "GLShaderArray::initializeGL: error linking shader: "
|
|
<< m_objProgram->log();
|
|
}
|
|
|
|
m_objProgram->bind();
|
|
m_objProgram->setUniformValue(m_matrixLoc, objQMatrix);
|
|
m_objProgram->setUniformValue(m_textureLoc, 0);
|
|
m_objProgram->release();
|
|
}
|
|
|
|
m_matrixLoc = m_objProgram->uniformLocation("uMatrix");
|
|
m_textureLoc = m_objProgram->uniformLocation("uTexture");
|
|
|
|
if (m_objTexture)
|
|
{
|
|
delete m_objTexture;
|
|
m_objTexture = nullptr;
|
|
}
|
|
|
|
//Image container
|
|
m_objImage = new QImage(intCols, intRows, QImage::Format_RGBA8888);
|
|
m_objImage->fill(QColor(0, 0, 0));
|
|
|
|
m_objTexture = new QOpenGLTexture(*m_objImage);
|
|
//m_objTexture->setFormat(QOpenGLTexture::RGBA8_UNorm); avoids OpenGL warning and in fact is useless
|
|
m_objTexture->setMinificationFilter(QOpenGLTexture::Linear);
|
|
m_objTexture->setMagnificationFilter(QOpenGLTexture::Linear);
|
|
m_objTexture->setWrapMode(QOpenGLTexture::ClampToEdge);
|
|
|
|
m_intCols = intCols;
|
|
m_intRows = intRows;
|
|
|
|
m_blnInitialized = true;
|
|
|
|
}
|
|
|
|
QRgb * GLShaderTVArray::GetRowBuffer(int intRow)
|
|
{
|
|
if (!m_blnInitialized) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!m_objImage) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (intRow > m_intRows) {
|
|
return nullptr;
|
|
}
|
|
|
|
return (QRgb *) m_objImage->scanLine(intRow);
|
|
}
|
|
|
|
void GLShaderTVArray::RenderPixels(unsigned char *chrData)
|
|
{
|
|
QOpenGLFunctions *ptrF;
|
|
int intI;
|
|
int intJ;
|
|
int intNbVertices = 6;
|
|
|
|
QMatrix4x4 objQMatrix;
|
|
|
|
GLfloat arrVertices[] =
|
|
// 2 3
|
|
// 1 4
|
|
//1 2 3 3 4 1
|
|
{ -1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, -1.0f, -1.0f };
|
|
|
|
GLfloat arrTextureCoords[] =
|
|
// 1 4
|
|
// 2 3
|
|
//1 2 3 3 4 1
|
|
{ 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f };
|
|
|
|
QRgb *ptrLine;
|
|
int intVal;
|
|
|
|
if (!m_blnInitialized) {
|
|
return;
|
|
}
|
|
|
|
if (!m_objImage) {
|
|
return;
|
|
}
|
|
|
|
if (chrData != 0)
|
|
{
|
|
for (intJ = 0; intJ < m_intRows; intJ++)
|
|
{
|
|
ptrLine = (QRgb *) m_objImage->scanLine(intJ);
|
|
|
|
for (intI = 0; intI < m_intCols; intI++)
|
|
{
|
|
if (m_blnColor)
|
|
{
|
|
*ptrLine = qRgb((int) (*(chrData+2)), (int) (*(chrData+1)), (int) (*chrData));
|
|
chrData+=3;
|
|
}
|
|
else
|
|
{
|
|
intVal = (int) (*chrData);
|
|
*ptrLine = qRgb(intVal, intVal, intVal);
|
|
chrData++;
|
|
}
|
|
|
|
ptrLine++;
|
|
}
|
|
}
|
|
}
|
|
|
|
//Affichage
|
|
ptrF = QOpenGLContext::currentContext()->functions();
|
|
|
|
m_objProgram->bind();
|
|
|
|
m_objProgram->setUniformValue(m_matrixLoc, objQMatrix);
|
|
m_objProgram->setUniformValue(m_textureLoc, 0);
|
|
|
|
if (m_blnAlphaReset)
|
|
{
|
|
ptrF->glClear(GL_COLOR_BUFFER_BIT);
|
|
m_blnAlphaReset = false;
|
|
}
|
|
|
|
if (m_blnAlphaBlend)
|
|
{
|
|
ptrF->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
ptrF->glEnable(GL_BLEND);
|
|
}
|
|
else
|
|
{
|
|
ptrF->glDisable(GL_BLEND);
|
|
}
|
|
|
|
m_objTexture->bind();
|
|
|
|
ptrF->glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, m_intCols, m_intRows, GL_RGBA,
|
|
GL_UNSIGNED_BYTE, m_objImage->bits());
|
|
|
|
ptrF->glEnableVertexAttribArray(0); // vertex
|
|
ptrF->glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, arrVertices);
|
|
|
|
ptrF->glEnableVertexAttribArray(1); // texture coordinates
|
|
ptrF->glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, arrTextureCoords);
|
|
|
|
ptrF->glDrawArrays(GL_TRIANGLES, 0, intNbVertices);
|
|
|
|
//cleanup
|
|
ptrF->glDisableVertexAttribArray(0);
|
|
ptrF->glDisableVertexAttribArray(1);
|
|
|
|
//*********************//
|
|
|
|
m_objTexture->release();
|
|
m_objProgram->release();
|
|
}
|
|
|
|
void GLShaderTVArray::ResetPixels()
|
|
{
|
|
if (m_objImage) {
|
|
m_objImage->fill(0);
|
|
}
|
|
}
|
|
|
|
void GLShaderTVArray::ResetPixels(int alpha)
|
|
{
|
|
if (m_objImage) {
|
|
m_objImage->fill(qRgba(0, 0, 0, alpha));
|
|
}
|
|
}
|
|
|
|
void GLShaderTVArray::cleanup()
|
|
{
|
|
m_blnInitialized = false;
|
|
|
|
m_intCols = 0;
|
|
m_intRows = 0;
|
|
|
|
m_objCurrentRow = nullptr;
|
|
|
|
if (m_objProgram)
|
|
{
|
|
delete m_objProgram;
|
|
m_objProgram = nullptr;
|
|
}
|
|
|
|
if (m_objTexture)
|
|
{
|
|
delete m_objTexture;
|
|
m_objTexture = nullptr;
|
|
}
|
|
|
|
if (m_objImage)
|
|
{
|
|
delete m_objImage;
|
|
m_objImage = nullptr;
|
|
}
|
|
}
|
|
|
|
bool GLShaderTVArray::SelectRow(int intLine)
|
|
{
|
|
bool blnRslt = false;
|
|
|
|
if (m_blnInitialized)
|
|
{
|
|
if ((intLine < m_intRows) && (intLine >= 0))
|
|
{
|
|
m_objCurrentRow = (QRgb *) m_objImage->scanLine(intLine);
|
|
blnRslt = true;
|
|
}
|
|
else
|
|
{
|
|
m_objCurrentRow = nullptr;
|
|
}
|
|
}
|
|
|
|
return blnRslt;
|
|
}
|
|
|
|
bool GLShaderTVArray::SetDataColor(int intCol, QRgb objColor)
|
|
{
|
|
bool blnRslt = false;
|
|
|
|
if (m_blnInitialized)
|
|
{
|
|
if ((intCol < m_intCols) && (intCol >= 0) && m_objCurrentRow)
|
|
{
|
|
m_objCurrentRow[intCol] = objColor;
|
|
blnRslt = true;
|
|
}
|
|
}
|
|
|
|
return blnRslt;
|
|
}
|
|
|