tdesktop/Telegram/SourceFiles/media/view/media_view_overlay_opengl.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "media/view/media_view_overlay_opengl.h"
#include "ui/gl/gl_shader.h"
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#include "media/streaming/media_streaming_common.h"
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#include "base/platform/base_platform_info.h"
#include "core/crash_reports.h"
#include "styles/style_media_view.h"
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namespace Media::View {
namespace {
using namespace Ui::GL;
constexpr auto kRadialLoadingOffset = 4;
constexpr auto kThemePreviewOffset = kRadialLoadingOffset + 4;
constexpr auto kDocumentBubbleOffset = kThemePreviewOffset + 4;
constexpr auto kSaveMsgOffset = kDocumentBubbleOffset + 4;
constexpr auto kFooterOffset = kSaveMsgOffset + 4;
constexpr auto kCaptionOffset = kFooterOffset + 4;
constexpr auto kGroupThumbsOffset = kCaptionOffset + 4;
constexpr auto kControlsOffset = kGroupThumbsOffset + 4;
constexpr auto kControlValues = 2 * 4 + 4 * 4;
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[[nodiscard]] ShaderPart FragmentPlaceOnTransparentBackground() {
return {
.header = R"(
uniform vec4 transparentBg;
uniform vec4 transparentFg;
uniform float transparentSize;
)",
.body = R"(
vec2 checkboardLadder = floor(gl_FragCoord.xy / transparentSize);
float checkboard = mod(checkboardLadder.x + checkboardLadder.y, 2.0);
vec4 checkboardColor = checkboard * transparentBg
+ (1. - checkboard) * transparentFg;
result += checkboardColor * (1. - result.a);
)",
};
}
} // namespace
OverlayWidget::RendererGL::RendererGL(not_null<OverlayWidget*> owner)
: _owner(owner) {
style::PaletteChanged(
) | rpl::start_with_next([=] {
_radialImage.invalidate();
_documentBubbleImage.invalidate();
_themePreviewImage.invalidate();
_saveMsgImage.invalidate();
_footerImage.invalidate();
_captionImage.invalidate();
invalidateControls();
}, _lifetime);
}
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void OverlayWidget::RendererGL::init(
not_null<QOpenGLWidget*> widget,
QOpenGLFunctions &f) {
constexpr auto kQuads = 8;
constexpr auto kQuadVertices = kQuads * 4;
constexpr auto kQuadValues = kQuadVertices * 4;
constexpr auto kControlsValues = kControlsCount * kControlValues;
constexpr auto kValues = kQuadValues + kControlsValues;
_contentBuffer.emplace();
_contentBuffer->setUsagePattern(QOpenGLBuffer::DynamicDraw);
_contentBuffer->create();
_contentBuffer->bind();
_contentBuffer->allocate(kValues * sizeof(GLfloat));
_textures.ensureCreated(f);
_imageProgram.emplace();
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_texturedVertexShader = LinkProgram(
&*_imageProgram,
VertexShader({
VertexViewportTransform(),
VertexPassTextureCoord(),
}),
FragmentShader({
FragmentSampleARGB32Texture(),
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})).vertex;
_withTransparencyProgram.emplace();
LinkProgram(
&*_withTransparencyProgram,
_texturedVertexShader,
FragmentShader({
FragmentSampleARGB32Texture(),
FragmentPlaceOnTransparentBackground(),
}));
_yuv420Program.emplace();
LinkProgram(
&*_yuv420Program,
_texturedVertexShader,
FragmentShader({
FragmentSampleYUV420Texture(),
}));
_nv12Program.emplace();
LinkProgram(
&*_nv12Program,
_texturedVertexShader,
FragmentShader({
FragmentSampleNV12Texture(),
}));
_fillProgram.emplace();
LinkProgram(
&*_fillProgram,
VertexShader({ VertexViewportTransform() }),
FragmentShader({ FragmentStaticColor() }));
_controlsProgram.emplace();
LinkProgram(
&*_controlsProgram,
_texturedVertexShader,
FragmentShader({
FragmentSampleARGB32Texture(),
FragmentGlobalOpacity(),
}));
const auto renderer = reinterpret_cast<const char*>(
f.glGetString(GL_RENDERER));
CrashReports::SetAnnotation(
"OpenGL Renderer",
renderer ? renderer : "[nullptr]");
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}
void OverlayWidget::RendererGL::deinit(
not_null<QOpenGLWidget*> widget,
QOpenGLFunctions *f) {
_textures.destroy(f);
_imageProgram = std::nullopt;
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_texturedVertexShader = nullptr;
_withTransparencyProgram = std::nullopt;
_yuv420Program = std::nullopt;
_nv12Program = std::nullopt;
_fillProgram = std::nullopt;
_controlsProgram = std::nullopt;
_contentBuffer = std::nullopt;
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}
void OverlayWidget::RendererGL::paint(
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not_null<QOpenGLWidget*> widget,
QOpenGLFunctions &f) {
if (handleHideWorkaround(f)) {
return;
}
const auto factor = widget->devicePixelRatio();
if (_factor != factor) {
_factor = factor;
_controlsImage.invalidate();
}
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_blendingEnabled = false;
_viewport = widget->size();
_uniformViewport = QVector2D(
_viewport.width() * _factor,
_viewport.height() * _factor);
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_f = &f;
_owner->paint(this);
_f = nullptr;
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}
std::optional<QColor> OverlayWidget::RendererGL::clearColor() {
if (Platform::IsWindows() && _owner->_hideWorkaround) {
return QColor(0, 0, 0, 0);
} else if (_owner->_fullScreenVideo) {
return st::mediaviewVideoBg->c;
} else {
return st::mediaviewBg->c;
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}
}
bool OverlayWidget::RendererGL::handleHideWorkaround(QOpenGLFunctions &f) {
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// This is needed on Windows,
// because on reopen it blinks with the last shown content.
return Platform::IsWindows() && _owner->_hideWorkaround;
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}
void OverlayWidget::RendererGL::paintBackground() {
_contentBuffer->bind();
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}
void OverlayWidget::RendererGL::paintTransformedVideoFrame(
ContentGeometry geometry) {
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const auto data = _owner->videoFrameWithInfo();
if (data.format == Streaming::FrameFormat::None) {
return;
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} else if (data.format == Streaming::FrameFormat::ARGB32) {
Assert(!data.image.isNull());
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paintTransformedStaticContent(
data.image,
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geometry,
data.alpha,
data.alpha);
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return;
}
Assert(!data.yuv->size.isEmpty());
const auto program = (data.format == Streaming::FrameFormat::NV12)
? &*_nv12Program
: &*_yuv420Program;
program->bind();
const auto nv12 = (data.format == Streaming::FrameFormat::NV12);
const auto yuv = data.yuv;
const auto nv12changed = (_chromaNV12 != nv12);
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const auto upload = (_trackFrameIndex != data.index)
|| (_streamedIndex != _owner->streamedIndex());
_trackFrameIndex = data.index;
_streamedIndex = _owner->streamedIndex();
_f->glActiveTexture(GL_TEXTURE0);
_textures.bind(*_f, 1);
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if (upload) {
_f->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
uploadTexture(
GL_ALPHA,
GL_ALPHA,
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yuv->size,
_lumaSize,
yuv->y.stride,
yuv->y.data);
_lumaSize = yuv->size;
}
_f->glActiveTexture(GL_TEXTURE1);
_textures.bind(*_f, 2);
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if (upload) {
uploadTexture(
nv12 ? GL_RG : GL_ALPHA,
nv12 ? GL_RG : GL_ALPHA,
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yuv->chromaSize,
nv12changed ? QSize() : _chromaSize,
yuv->u.stride / (nv12 ? 2 : 1),
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yuv->u.data);
if (nv12) {
_chromaSize = yuv->chromaSize;
_f->glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
}
_chromaNV12 = nv12;
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}
if (!nv12) {
_f->glActiveTexture(GL_TEXTURE2);
_textures.bind(*_f, 3);
if (upload) {
uploadTexture(
GL_ALPHA,
GL_ALPHA,
yuv->chromaSize,
_chromaSize,
yuv->v.stride,
yuv->v.data);
_chromaSize = yuv->chromaSize;
_f->glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
}
}
program->setUniformValue("y_texture", GLint(0));
if (nv12) {
program->setUniformValue("uv_texture", GLint(1));
} else {
program->setUniformValue("u_texture", GLint(1));
program->setUniformValue("v_texture", GLint(2));
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}
toggleBlending(false);
paintTransformedContent(program, geometry);
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}
void OverlayWidget::RendererGL::paintTransformedStaticContent(
const QImage &image,
ContentGeometry geometry,
bool semiTransparent,
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bool fillTransparentBackground) {
Expects(image.isNull()
|| image.format() == QImage::Format_RGB32
|| image.format() == QImage::Format_ARGB32_Premultiplied);
if (geometry.rect.isEmpty()) {
return;
}
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auto &program = fillTransparentBackground
? _withTransparencyProgram
: _imageProgram;
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program->bind();
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if (fillTransparentBackground) {
program->setUniformValue(
"transparentBg",
st::mediaviewTransparentBg->c);
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program->setUniformValue(
"transparentFg",
st::mediaviewTransparentFg->c);
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program->setUniformValue(
"transparentSize",
st::transparentPlaceholderSize * _factor);
}
_f->glActiveTexture(GL_TEXTURE0);
_textures.bind(*_f, 0);
const auto cacheKey = image.isNull() ? qint64(-1) : image.cacheKey();
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const auto upload = (_cacheKey != cacheKey);
if (upload) {
_cacheKey = cacheKey;
if (image.isNull()) {
// Upload transparent 2x2 texture.
const auto stride = 2;
const uint32_t data[4] = { 0 };
uploadTexture(
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Ui::GL::kFormatRGBA,
Ui::GL::kFormatRGBA,
QSize(2, 2),
_rgbaSize,
stride,
data);
} else {
const auto stride = image.bytesPerLine() / 4;
const auto data = image.constBits();
uploadTexture(
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Ui::GL::kFormatRGBA,
Ui::GL::kFormatRGBA,
image.size(),
_rgbaSize,
stride,
data);
_rgbaSize = image.size();
}
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}
program->setUniformValue("s_texture", GLint(0));
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toggleBlending(semiTransparent && !fillTransparentBackground);
paintTransformedContent(&*program, geometry);
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}
void OverlayWidget::RendererGL::paintTransformedContent(
not_null<QOpenGLShaderProgram*> program,
ContentGeometry geometry) {
const auto rect = transformRect(geometry.rect);
const auto centerx = rect.x() + rect.width() / 2;
const auto centery = rect.y() + rect.height() / 2;
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const auto rsin = float(std::sin(geometry.rotation * M_PI / 180.));
const auto rcos = float(std::cos(geometry.rotation * M_PI / 180.));
const auto rotated = [&](float x, float y) -> std::array<float, 2> {
x -= centerx;
y -= centery;
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return std::array<float, 2>{
centerx + (x * rcos + y * rsin),
centery + (y * rcos - x * rsin)
};
};
const auto topleft = rotated(rect.left(), rect.top());
const auto topright = rotated(rect.right(), rect.top());
const auto bottomright = rotated(rect.right(), rect.bottom());
const auto bottomleft = rotated(rect.left(), rect.bottom());
const GLfloat coords[] = {
topleft[0], topleft[1],
0.f, 1.f,
topright[0], topright[1],
1.f, 1.f,
bottomright[0], bottomright[1],
1.f, 0.f,
bottomleft[0], bottomleft[1],
0.f, 0.f,
};
_contentBuffer->write(0, coords, sizeof(coords));
program->setUniformValue("viewport", _uniformViewport);
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FillTexturedRectangle(*_f, &*program);
}
void OverlayWidget::RendererGL::uploadTexture(
GLint internalformat,
GLint format,
QSize size,
QSize hasSize,
int stride,
const void *data) const {
_f->glPixelStorei(GL_UNPACK_ROW_LENGTH, stride);
if (hasSize != size) {
_f->glTexImage2D(
GL_TEXTURE_2D,
0,
internalformat,
size.width(),
size.height(),
0,
format,
GL_UNSIGNED_BYTE,
data);
} else {
_f->glTexSubImage2D(
GL_TEXTURE_2D,
0,
0,
0,
size.width(),
size.height(),
format,
GL_UNSIGNED_BYTE,
data);
}
_f->glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
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}
void OverlayWidget::RendererGL::paintRadialLoading(
QRect inner,
bool radial,
float64 radialOpacity) {
paintUsingRaster(_radialImage, inner, [&](Painter &&p) {
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const auto newInner = QRect(QPoint(), inner.size());
_owner->paintRadialLoadingContent(p, newInner, radial, radialOpacity);
}, kRadialLoadingOffset, true);
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}
void OverlayWidget::RendererGL::paintThemePreview(QRect outer) {
paintUsingRaster(_themePreviewImage, outer, [&](Painter &&p) {
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const auto newOuter = QRect(QPoint(), outer.size());
_owner->paintThemePreviewContent(p, newOuter, newOuter);
}, kThemePreviewOffset);
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}
void OverlayWidget::RendererGL::paintDocumentBubble(
QRect outer,
QRect icon) {
paintUsingRaster(_documentBubbleImage, outer, [&](Painter &&p) {
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const auto newOuter = QRect(QPoint(), outer.size());
const auto newIcon = icon.translated(-outer.topLeft());
_owner->paintDocumentBubbleContent(p, newOuter, newIcon, newOuter);
}, kDocumentBubbleOffset);
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_owner->paintRadialLoading(this);
}
void OverlayWidget::RendererGL::paintSaveMsg(QRect outer) {
paintUsingRaster(_saveMsgImage, outer, [&](Painter &&p) {
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const auto newOuter = QRect(QPoint(), outer.size());
_owner->paintSaveMsgContent(p, newOuter, newOuter);
}, kSaveMsgOffset, true);
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}
void OverlayWidget::RendererGL::paintControlsStart() {
validateControls();
_f->glActiveTexture(GL_TEXTURE0);
_controlsImage.bind(*_f);
toggleBlending(true);
}
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void OverlayWidget::RendererGL::paintControl(
OverState control,
QRect outer,
float64 outerOpacity,
QRect inner,
float64 innerOpacity,
const style::icon &icon) {
const auto meta = ControlMeta(control);
Assert(meta.icon == &icon);
const auto &bg = st::mediaviewControlBg->c;
const auto bgAlpha = int(base::SafeRound(bg.alpha() * outerOpacity));
const auto offset = kControlsOffset + (meta.index * kControlValues) / 4;
const auto fgOffset = offset + 2;
const auto bgRect = transformRect(outer);
const auto iconRect = _controlsImage.texturedRect(
inner,
_controlsTextures[meta.index]);
const auto iconGeometry = transformRect(iconRect.geometry);
const GLfloat coords[] = {
bgRect.left(), bgRect.top(),
bgRect.right(), bgRect.top(),
bgRect.right(), bgRect.bottom(),
bgRect.left(), bgRect.bottom(),
iconGeometry.left(), iconGeometry.top(),
iconRect.texture.left(), iconRect.texture.bottom(),
iconGeometry.right(), iconGeometry.top(),
iconRect.texture.right(), iconRect.texture.bottom(),
iconGeometry.right(), iconGeometry.bottom(),
iconRect.texture.right(), iconRect.texture.top(),
iconGeometry.left(), iconGeometry.bottom(),
iconRect.texture.left(), iconRect.texture.top(),
};
if (!outer.isEmpty() && bgAlpha > 0) {
_contentBuffer->write(
offset * 4 * sizeof(GLfloat),
coords,
sizeof(coords));
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_fillProgram->bind();
_fillProgram->setUniformValue("viewport", _uniformViewport);
FillRectangle(
*_f,
&*_fillProgram,
offset,
QColor(bg.red(), bg.green(), bg.blue(), bgAlpha));
} else {
_contentBuffer->write(
fgOffset * 4 * sizeof(GLfloat),
coords + (fgOffset - offset) * 4,
sizeof(coords) - (fgOffset - offset) * 4 * sizeof(GLfloat));
}
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_controlsProgram->bind();
_controlsProgram->setUniformValue("g_opacity", GLfloat(innerOpacity));
_controlsProgram->setUniformValue("viewport", _uniformViewport);
FillTexturedRectangle(*_f, &*_controlsProgram, fgOffset);
}
auto OverlayWidget::RendererGL::ControlMeta(OverState control)
-> Control {
switch (control) {
case OverLeftNav: return { 0, &st::mediaviewLeft };
case OverRightNav: return { 1, &st::mediaviewRight };
case OverClose: return { 2, &st::mediaviewClose };
case OverSave: return { 3, &st::mediaviewSave };
case OverRotate: return { 4, &st::mediaviewRotate };
case OverMore: return { 5, &st::mediaviewMore };
}
Unexpected("Control value in OverlayWidget::RendererGL::ControlIndex.");
}
void OverlayWidget::RendererGL::validateControls() {
if (!_controlsImage.image().isNull()) {
return;
}
const auto metas = {
ControlMeta(OverLeftNav),
ControlMeta(OverRightNav),
ControlMeta(OverClose),
ControlMeta(OverSave),
ControlMeta(OverRotate),
ControlMeta(OverMore),
};
auto maxWidth = 0;
auto fullHeight = 0;
for (const auto &meta : metas) {
maxWidth = std::max(meta.icon->width(), maxWidth);
fullHeight += meta.icon->height();
}
auto image = QImage(
QSize(maxWidth, fullHeight) * _factor,
QImage::Format_ARGB32_Premultiplied);
image.fill(Qt::transparent);
image.setDevicePixelRatio(_factor);
{
auto p = QPainter(&image);
auto index = 0;
auto height = 0;
for (const auto &meta : metas) {
meta.icon->paint(p, 0, height, maxWidth);
_controlsTextures[index++] = QRect(
QPoint(0, height) * _factor,
meta.icon->size() * _factor);
height += meta.icon->height();
}
}
_controlsImage.setImage(std::move(image));
}
void OverlayWidget::RendererGL::invalidateControls() {
_controlsImage.invalidate();
ranges::fill(_controlsTextures, QRect());
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}
void OverlayWidget::RendererGL::paintFooter(QRect outer, float64 opacity) {
paintUsingRaster(_footerImage, outer, [&](Painter &&p) {
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const auto newOuter = QRect(QPoint(), outer.size());
_owner->paintFooterContent(p, newOuter, newOuter, opacity);
}, kFooterOffset, true);
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}
void OverlayWidget::RendererGL::paintCaption(QRect outer, float64 opacity) {
paintUsingRaster(_captionImage, outer, [&](Painter &&p) {
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const auto newOuter = QRect(QPoint(), outer.size());
_owner->paintCaptionContent(p, newOuter, newOuter, opacity);
}, kCaptionOffset, true);
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}
void OverlayWidget::RendererGL::paintGroupThumbs(
QRect outer,
float64 opacity) {
paintUsingRaster(_groupThumbsImage, outer, [&](Painter &&p) {
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const auto newOuter = QRect(QPoint(), outer.size());
_owner->paintGroupThumbsContent(p, newOuter, newOuter, opacity);
}, kGroupThumbsOffset, true);
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}
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void OverlayWidget::RendererGL::invalidate() {
_trackFrameIndex = -1;
_streamedIndex = -1;
const auto images = {
&_radialImage,
&_documentBubbleImage,
&_themePreviewImage,
&_saveMsgImage,
&_footerImage,
&_captionImage,
&_groupThumbsImage,
&_controlsImage,
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};
for (const auto image : images) {
image->setImage(QImage());
}
invalidateControls();
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}
void OverlayWidget::RendererGL::paintUsingRaster(
Ui::GL::Image &image,
QRect rect,
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Fn<void(Painter&&)> method,
int bufferOffset,
bool transparent) {
auto raster = image.takeImage();
const auto size = rect.size() * _factor;
if (raster.width() < size.width() || raster.height() < size.height()) {
raster = QImage(size, QImage::Format_ARGB32_Premultiplied);
raster.setDevicePixelRatio(_factor);
if (!transparent
&& (raster.width() > size.width()
|| raster.height() > size.height())) {
raster.fill(Qt::transparent);
}
} else if (raster.devicePixelRatio() != _factor) {
raster.setDevicePixelRatio(_factor);
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}
if (transparent) {
raster.fill(Qt::transparent);
}
method(Painter(&raster));
_f->glActiveTexture(GL_TEXTURE0);
image.setImage(std::move(raster), size);
image.bind(*_f);
const auto textured = image.texturedRect(rect, QRect(QPoint(), size));
const auto geometry = transformRect(textured.geometry);
const GLfloat coords[] = {
geometry.left(), geometry.top(),
textured.texture.left(), textured.texture.bottom(),
geometry.right(), geometry.top(),
textured.texture.right(), textured.texture.bottom(),
geometry.right(), geometry.bottom(),
textured.texture.right(), textured.texture.top(),
geometry.left(), geometry.bottom(),
textured.texture.left(), textured.texture.top(),
};
_contentBuffer->write(
bufferOffset * 4 * sizeof(GLfloat),
coords,
sizeof(coords));
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_imageProgram->bind();
_imageProgram->setUniformValue("viewport", _uniformViewport);
_imageProgram->setUniformValue("s_texture", GLint(0));
toggleBlending(transparent);
FillTexturedRectangle(*_f, &*_imageProgram, bufferOffset);
}
void OverlayWidget::RendererGL::toggleBlending(bool enabled) {
if (_blendingEnabled == enabled) {
return;
} else if (enabled) {
_f->glEnable(GL_BLEND);
_f->glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
} else {
_f->glDisable(GL_BLEND);
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}
_blendingEnabled = enabled;
}
Rect OverlayWidget::RendererGL::transformRect(const Rect &raster) const {
return TransformRect(raster, _viewport, _factor);
}
Rect OverlayWidget::RendererGL::transformRect(const QRectF &raster) const {
return TransformRect(raster, _viewport, _factor);
}
Rect OverlayWidget::RendererGL::transformRect(const QRect &raster) const {
return TransformRect(Rect(raster), _viewport, _factor);
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}
} // namespace Media::View