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plugins/screenshot: do color transformations if necessary

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BUG: 471874
This commit is contained in:
Xaver Hugl 2023-08-01 17:33:51 +02:00
parent 85237fe7a7
commit 7be6aa73f2
1 changed files with 19 additions and 15 deletions
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34
src/plugins/screenshot/screenshot.cpp
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@ -366,22 +366,26 @@ QImage ScreenShotEffect::blitScreenshot(const RenderTarget &renderTarget, const
const QSize nativeSize = renderTarget.applyTransformation(geometry, screenGeometry).size() * devicePixelRatio;
image = QImage(nativeSize, QImage::Format_ARGB32);
if (GLFramebuffer::blitSupported() && !GLPlatform::instance()->isGLES()) {
const auto texture = GLTexture::allocate(GL_RGBA8, nativeSize);
if (!texture) {
return {};
}
GLFramebuffer target(texture.get());
target.blitFromFramebuffer(viewport.mapToRenderTarget(geometry));
// copy content from framebuffer into image
texture->bind();
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE,
static_cast<GLvoid *>(image.bits()));
texture->unbind();
} else {
glReadPixels(0, 0, nativeSize.width(), nativeSize.height(), GL_RGBA,
GL_UNSIGNED_BYTE, static_cast<GLvoid *>(image.bits()));
const auto texture = GLTexture::allocate(GL_RGBA8, nativeSize);
if (!texture) {
return {};
}
GLFramebuffer target(texture.get());
if (renderTarget.texture()) {
GLFramebuffer::pushFramebuffer(&target);
ShaderBinder binder(ShaderTrait::MapTexture | ShaderTrait::TransformColorspace);
binder.shader()->setColorspaceUniformsToSRGB(renderTarget.colorDescription());
QMatrix4x4 projectionMatrix = renderTarget.texture()->contentTransformMatrix().inverted();
projectionMatrix.ortho(QRect(QPoint(), nativeSize));
binder.shader()->setUniform(GLShader::ModelViewProjectionMatrix, projectionMatrix);
renderTarget.texture()->render(viewport.mapToRenderTargetTexture(geometry), infiniteRegion(), nativeSize, 1);
} else {
target.blitFromFramebuffer(viewport.mapToRenderTarget(geometry));
GLFramebuffer::pushFramebuffer(&target);
}
glReadPixels(0, 0, nativeSize.width(), nativeSize.height(), GL_RGBA,
GL_UNSIGNED_BYTE, static_cast<GLvoid *>(image.bits()));
GLFramebuffer::popFramebuffer();
convertFromGLImage(image, nativeSize.width(), nativeSize.height(), renderTarget.transformation());
}