[libcamera-devel] [PATCH][RFC 1/2] qcam: viewfinder_gl: set the vertex shader file name in selectFormat()

[Andrey Konovalov]

In preparation to extend the supported formats, make it possible
to use different vertex fragment files depending on the format.
Make "identity.vert" the default choice.

Signed-off-by: Andrey Konovalov <andrey.konovalov at linaro.org>
---
 src/qcam/viewfinder_gl.cpp | 4 +++-
 src/qcam/viewfinder_gl.h   | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/qcam/viewfinder_gl.cpp b/src/qcam/viewfinder_gl.cpp
index 5d9b442e..c74ce77b 100644
--- a/src/qcam/viewfinder_gl.cpp
+++ b/src/qcam/viewfinder_gl.cpp
@@ -114,6 +114,8 @@ bool ViewFinderGL::selectFormat(const libcamera::PixelFormat &format)
 {
 	bool ret = true;
 
+	vertexShaderFile_ = ":identity.vert";
+
 	fragmentShaderDefines_.clear();
 
 	switch (format) {
@@ -219,7 +221,7 @@ bool ViewFinderGL::createVertexShader()
 	vertexShader_ = std::make_unique<QOpenGLShader>(QOpenGLShader::Vertex, this);
 
 	/* Compile the vertex shader */
-	if (!vertexShader_->compileSourceFile(":identity.vert")) {
+	if (!vertexShader_->compileSourceFile(vertexShaderFile_)) {
 		qWarning() << "[ViewFinderGL]:" << vertexShader_->log();
 		return false;
 	}
diff --git a/src/qcam/viewfinder_gl.h b/src/qcam/viewfinder_gl.h
index 150fa4ae..6cf8f347 100644
--- a/src/qcam/viewfinder_gl.h
+++ b/src/qcam/viewfinder_gl.h
@@ -72,6 +72,7 @@ private:
 	QOpenGLShaderProgram shaderProgram_;
 	std::unique_ptr<QOpenGLShader> vertexShader_;
 	std::unique_ptr<QOpenGLShader> fragmentShader_;
+	QString vertexShaderFile_;
 	QString fragmentShaderFile_;
 	QStringList fragmentShaderDefines_;
 
-- 
2.17.1