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LowLevelGraphicsContext: Add preferred image type for temporary images

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Co-authored-by: Matt Gonzalez <matt@echoaudio.com>
This commit is contained in:
Oli 2025-04-15 13:27:15 +01:00
parent bf940ae42a
commit 250abe9cf4
6 changed files with 40 additions and 1 deletions
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10
modules/juce_graphics/contexts/juce_LowLevelGraphicsContext.h
View file

@ -137,6 +137,16 @@ public:
Span<const Point<float>>,
const AffineTransform&) = 0;
/** Returns the optimal ImageType for creating temporary images in this GraphicsContext.
While this typically matches the GraphicsContext's native ImageType, certain scenarios
may benefit from using a different format for temporary operations (e.g., for
performance, memory efficiency, or specific rendering requirements).
@return A unique_ptr to the recommended ImageType instance for temporary images
*/
virtual std::unique_ptr<ImageType> getPreferredImageTypeForTemporaryImages() const = 0;
virtual void drawRoundedRectangle (const Rectangle<float>& r, float cornerSize, float lineThickness)
{
Path p;

5
modules/juce_graphics/contexts/juce_LowLevelGraphicsSoftwareRenderer.h
View file

@ -59,6 +59,11 @@ public:
/** Destructor. */
~LowLevelGraphicsSoftwareRenderer() override;
std::unique_ptr<ImageType> getPreferredImageTypeForTemporaryImages() const override
{
return std::make_unique<SoftwareImageType>();
}
private:
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (LowLevelGraphicsSoftwareRenderer)
};

5
modules/juce_graphics/native/juce_CoreGraphicsContext_mac.h
View file

@ -99,6 +99,11 @@ public:
uint64_t getFrameId() const override { return 0; }
std::unique_ptr<ImageType> getPreferredImageTypeForTemporaryImages() const override
{
return std::make_unique<NativeImageType>();
}
void drawEllipse (const Rectangle<float>& area, float lineThickness) override;
void fillEllipse (const Rectangle<float>& area) override;

5
modules/juce_graphics/native/juce_Direct2DGraphicsContext_windows.h
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@ -106,6 +106,11 @@ public:
uint64_t getFrameId() const override { return frame; }
std::unique_ptr<ImageType> getPreferredImageTypeForTemporaryImages() const override
{
return std::make_unique<NativeImageType>();
}
Direct2DMetrics::Ptr metrics;
protected:

4
modules/juce_graphics/native/juce_Direct2DImage_windows.cpp
View file

@ -729,6 +729,10 @@ std::unique_ptr<LowLevelGraphicsContext> Direct2DPixelData::createLowLevelContex
void drawGlyphs (Span<const uint16_t>, Span<const Point<float>>, const AffineTransform&) override {}
uint64_t getFrameId() const override { return 0; }
Font font { FontOptions{} };
std::unique_ptr<ImageType> getPreferredImageTypeForTemporaryImages() const override
{
return std::make_unique<NativeImageType>();
}
};
return std::make_unique<InertContext>();

12
modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp
View file

@ -1839,6 +1839,11 @@ struct ShaderContext final : public RenderingHelpers::StackBasedLowLevelGraphics
static_cast<SavedState&> (*stack).fillRectWithCustomShader (shader, area);
}
std::unique_ptr<ImageType> getPreferredImageTypeForTemporaryImages() const override
{
return std::make_unique<OpenGLImageType>();
}
GLState glState;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ShaderContext)
@ -1850,7 +1855,7 @@ struct NonShaderContext final : public LowLevelGraphicsSoftwareRenderer
: LowLevelGraphicsSoftwareRenderer (im), target (t), image (im)
{}
~NonShaderContext()
~NonShaderContext() override
{
JUCE_CHECK_OPENGL_ERROR
auto previousFrameBufferTarget = OpenGLFrameBuffer::getCurrentFrameBufferTarget();
@ -1883,6 +1888,11 @@ struct NonShaderContext final : public LowLevelGraphicsSoftwareRenderer
JUCE_CHECK_OPENGL_ERROR
}
std::unique_ptr<ImageType> getPreferredImageTypeForTemporaryImages() const noexcept override
{
return std::make_unique<OpenGLImageType>();
}
private:
Target target;
Image image;