125 lines
2.6 KiB
C++
125 lines
2.6 KiB
C++
// 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 "ui/gl/gl_math.h"
|
|
|
|
#include <QtGui/QOpenGLFunctions>
|
|
|
|
namespace Ui::GL {
|
|
namespace details {
|
|
|
|
void GenerateTextures(QOpenGLFunctions &f, gsl::span<GLuint> values);
|
|
void DestroyTextures(QOpenGLFunctions &f, gsl::span<GLuint> values);
|
|
|
|
void GenerateFramebuffers(QOpenGLFunctions &f, gsl::span<GLuint> values);
|
|
void DestroyFramebuffers(QOpenGLFunctions &f, gsl::span<GLuint> values);
|
|
|
|
} // namespace details
|
|
|
|
template <size_t Count>
|
|
class Textures final {
|
|
public:
|
|
static_assert(Count > 0);
|
|
|
|
void ensureCreated(QOpenGLFunctions &f) {
|
|
if (!created()) {
|
|
details::GenerateTextures(f, gsl::make_span(_values));
|
|
}
|
|
}
|
|
void destroy(QOpenGLFunctions &f) {
|
|
if (created()) {
|
|
details::DestroyTextures(f, gsl::make_span(_values));
|
|
}
|
|
}
|
|
|
|
void bind(QOpenGLFunctions &f, int index) const {
|
|
Expects(index >= 0 && index < Count);
|
|
|
|
f.glBindTexture(GL_TEXTURE_2D, _values[index]);
|
|
}
|
|
|
|
[[nodiscard]] GLuint id(int index) const {
|
|
Expects(index >= 0 && index < Count);
|
|
|
|
return _values[index];
|
|
}
|
|
|
|
[[nodiscard]] bool created() const {
|
|
return (_values[0] != 0);
|
|
}
|
|
|
|
private:
|
|
std::array<GLuint, Count> _values = { { 0 } };
|
|
|
|
};
|
|
|
|
template <size_t Count>
|
|
class Framebuffers final {
|
|
public:
|
|
static_assert(Count > 0);
|
|
|
|
void ensureCreated(QOpenGLFunctions &f) {
|
|
if (!created()) {
|
|
details::GenerateFramebuffers(f, gsl::make_span(_values));
|
|
}
|
|
}
|
|
void destroy(QOpenGLFunctions &f) {
|
|
if (created()) {
|
|
details::DestroyFramebuffers(f, gsl::make_span(_values));
|
|
}
|
|
}
|
|
|
|
void bind(QOpenGLFunctions &f, int index) const {
|
|
Expects(index >= 0 && index < Count);
|
|
|
|
f.glBindFramebuffer(GL_FRAMEBUFFER, _values[index]);
|
|
}
|
|
|
|
[[nodiscard]] bool created() const {
|
|
return (_values[0] != 0);
|
|
}
|
|
|
|
private:
|
|
std::array<GLuint, Count> _values = { { 0 } };
|
|
|
|
};
|
|
|
|
struct TexturedRect {
|
|
Rect geometry;
|
|
Rect texture;
|
|
};
|
|
|
|
class Image final {
|
|
public:
|
|
void setImage(QImage image);
|
|
[[nodiscard]] const QImage &image() const;
|
|
[[nodiscard]] QImage takeImage();
|
|
void invalidate();
|
|
|
|
void bind(QOpenGLFunctions &f, QSize subimage = QSize());
|
|
void destroy(QOpenGLFunctions &f);
|
|
|
|
[[nodiscard]] TexturedRect texturedRect(
|
|
const QRect &geometry,
|
|
const QRect &texture,
|
|
const QRect &clip = QRect());
|
|
|
|
explicit operator bool() const {
|
|
return !_image.isNull();
|
|
}
|
|
|
|
private:
|
|
QImage _image;
|
|
QImage _storage;
|
|
Textures<1> _textures;
|
|
qint64 _cacheKey = 0;
|
|
QSize _textureSize;
|
|
|
|
};
|
|
|
|
} // namespace Ui::GL
|