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Enable sRGB to gamma correct scaling

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This commit is contained in:
Dušan Poizl
2022-10-16 11:05:15 +02:00
parent 2bc54ea0cc
commit 95c6fc5343
3 changed files with 8 additions and 2 deletions
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imagescrollareagl.cpp
+6 -2
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@@ -24,8 +24,8 @@ const RawImageType rawImageTypes[] = {
{QOpenGLTexture::Red, QOpenGLTexture::R8_UNorm, QOpenGLTexture::UInt8, true},
{QOpenGLTexture::Red, QOpenGLTexture::R16_UNorm, QOpenGLTexture::UInt16, true},
{QOpenGLTexture::Red, QOpenGLTexture::R32F, QOpenGLTexture::Float32, true},
{QOpenGLTexture::RGB, QOpenGLTexture::RGB8_UNorm, QOpenGLTexture::UInt8, false},
{QOpenGLTexture::RGBA,QOpenGLTexture::RGB8_UNorm, QOpenGLTexture::UInt8, false},
{QOpenGLTexture::RGB, QOpenGLTexture::SRGB8, QOpenGLTexture::UInt8, false},
{QOpenGLTexture::RGBA,QOpenGLTexture::SRGB8_Alpha8, QOpenGLTexture::UInt8, false},
{QOpenGLTexture::RGB, QOpenGLTexture::RGB16_UNorm, QOpenGLTexture::UInt16, false},
{QOpenGLTexture::RGBA, QOpenGLTexture::RGB16_UNorm, QOpenGLTexture::UInt16, false},
{QOpenGLTexture::RGB, QOpenGLTexture::RGB32F, QOpenGLTexture::Float32, false}
@@ -79,6 +79,7 @@ ImageWidget::ImageWidget(Database *database, QWidget *parent) : QOpenGLWidget(pa
});
setMouseTracking(true);
setTextureFormat(GL_SRGB8_ALPHA8);
}
ImageWidget::~ImageWidget()
@@ -110,6 +111,7 @@ void ImageWidget::setImage(std::shared_ptr<RawImage> image, int index)
m_image->setLevelOfDetailRange(m_superpixel ? 1 : 0, m_image->mipMaxLevel());
m_image->generateMipMaps();
m_bwImg = rawImageType.bw;
m_srgb = rawImageType.textureFormat == QOpenGLTexture::SRGB8 || rawImageType.textureFormat == QOpenGLTexture::SRGB8_Alpha8;
update();
}
@@ -288,6 +290,7 @@ void ImageWidget::paintGL()
}
else
{
if(m_srgb)f->glEnable(GL_FRAMEBUFFER_SRGB);
m_vao->bind();
m_image->bind(0);
m_program->bind();
@@ -298,6 +301,7 @@ void ImageWidget::paintGL()
m_program->setUniformValue("bw", m_bwImg);
m_program->setUniformValue("invert", m_invert);
f->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
if(m_srgb)f->glDisable(GL_FRAMEBUFFER_SRGB);
}
}