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Telegram/lib_ui/ui/gl/gl_shader.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include <QtCore/QString>
+#include <QOpenGLShader>
+
+class OpenGLShaderProgram;
+
+namespace Ui::GL {
+
+struct ShaderPart {
+	QString header;
+	QString body;
+};
+
+[[nodiscard]] QString VertexShader(const std::vector<ShaderPart> &parts);
+[[nodiscard]] QString FragmentShader(const std::vector<ShaderPart> &parts);
+
+[[nodiscard]] ShaderPart VertexPassTextureCoord(char prefix = 'v');
+[[nodiscard]] ShaderPart FragmentSampleARGB32Texture();
+[[nodiscard]] ShaderPart FragmentSampleYUV420Texture();
+[[nodiscard]] ShaderPart FragmentSampleNV12Texture();
+[[nodiscard]] ShaderPart FragmentGlobalOpacity();
+[[nodiscard]] ShaderPart VertexViewportTransform();
+[[nodiscard]] ShaderPart FragmentRoundCorners();
+[[nodiscard]] ShaderPart FragmentStaticColor();
+
+not_null<QOpenGLShader*> MakeShader(
+	not_null<QOpenGLShaderProgram*> program,
+	QOpenGLShader::ShaderType type,
+	const QString &source);
+
+struct Program {
+	not_null<QOpenGLShader*> vertex;
+	not_null<QOpenGLShader*> fragment;
+};
+
+Program LinkProgram(
+	not_null<QOpenGLShaderProgram*> program,
+	std::variant<QString, not_null<QOpenGLShader*>> vertex,
+	std::variant<QString, not_null<QOpenGLShader*>> fragment);
+
+} // namespace Ui::GL