void VideoShader::compile(QOpenGLShaderProgram *shaderProgram)
{
Q_ASSERT_X(!shaderProgram->isLinked(), "VideoShader::compile()", "Compile called multiple times!");
shaderProgram->addShaderFromSourceCode(QOpenGLShader::Vertex, vertexShader());
shaderProgram->addShaderFromSourceCode(QOpenGLShader::Fragment, fragmentShader());
int maxVertexAttribs = 0;
glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxVertexAttribs);
char const *const *attr = attributeNames();
for (int i = 0; attr[i]; ++i) {
if (i >= maxVertexAttribs) {
qFatal("List of attribute names is either too long or not null-terminated.\n"
"Maximum number of attributes on this hardware is %i.\n"
"Vertex shader:\n%s\n"
"Fragment shader:\n%s\n",
maxVertexAttribs, vertexShader(), fragmentShader());
}
// why must min location == 0?
if (*attr[i])
shaderProgram->bindAttributeLocation(attr[i], i);
}
if (!shaderProgram->link()) {
qWarning("QSGMaterialShader: Shader compilation failed:");
qWarning() << shaderProgram->log();
}
}
void QSGMaterialShader::compile()
{
Q_ASSERT_X(!m_program.isLinked(), "QSGSMaterialShader::compile()", "Compile called multiple times!");
program()->addShaderFromSourceCode(QOpenGLShader::Vertex, vertexShader());
program()->addShaderFromSourceCode(QOpenGLShader::Fragment, fragmentShader());
char const *const *attr = attributeNames();
#ifndef QT_NO_DEBUG
int maxVertexAttribs = 0;
QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
funcs->glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &maxVertexAttribs);
for (int i = 0; attr[i]; ++i) {
if (i >= maxVertexAttribs) {
qFatal("List of attribute names is either too long or not null-terminated.\n"
"Maximum number of attributes on this hardware is %i.\n"
"Vertex shader:\n%s\n"
"Fragment shader:\n%s\n",
maxVertexAttribs, vertexShader(), fragmentShader());
}
if (*attr[i])
program()->bindAttributeLocation(attr[i], i);
}
#else
for (int i = 0; attr[i]; ++i) {
if (*attr[i])
program()->bindAttributeLocation(attr[i], i);
}
#endif
if (!program()->link()) {
qWarning("QSGMaterialShader: Shader compilation failed:");
qWarning() << program()->log();
}
}
