mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-09 23:34:20 +00:00
OpenGLFrameBuffer: Refactor pimpl to completely hide SavedState
This commit is contained in:
parent
0da5827f72
commit
3991089409
2 changed files with 369 additions and 255 deletions
|
|
@ -38,6 +38,190 @@ namespace juce
|
|||
class OpenGLFrameBuffer::Pimpl
|
||||
{
|
||||
public:
|
||||
bool isValid() const noexcept
|
||||
{
|
||||
return transientState != nullptr;
|
||||
}
|
||||
|
||||
bool initialise (OpenGLContext& context, int width, int height)
|
||||
{
|
||||
jassert (context.isActive()); // The context must be active when creating a framebuffer!
|
||||
|
||||
transientState.reset();
|
||||
transientState.reset (new TransientState (context, width, height, false, false));
|
||||
|
||||
if (! transientState->createdOk())
|
||||
transientState.reset();
|
||||
|
||||
return transientState != nullptr;
|
||||
}
|
||||
|
||||
bool initialise (OpenGLContext& context, const Image& image)
|
||||
{
|
||||
if (! image.isARGB())
|
||||
return initialise (context, image.convertedToFormat (Image::ARGB));
|
||||
|
||||
Image::BitmapData bitmap (image, Image::BitmapData::readOnly);
|
||||
|
||||
return initialise (context, bitmap.width, bitmap.height)
|
||||
&& writePixels ((const PixelARGB*) bitmap.data, image.getBounds());
|
||||
}
|
||||
|
||||
bool initialise (OpenGLFrameBuffer& other)
|
||||
{
|
||||
auto* p = other.pimpl->transientState.get();
|
||||
|
||||
if (p == nullptr)
|
||||
{
|
||||
transientState.reset();
|
||||
return true;
|
||||
}
|
||||
|
||||
const Rectangle<int> area (transientState->width, transientState->height);
|
||||
|
||||
if (initialise (p->context, area.getWidth(), area.getHeight()))
|
||||
{
|
||||
transientState->bind();
|
||||
|
||||
#if ! JUCE_ANDROID
|
||||
if (! transientState->context.isCoreProfile())
|
||||
glEnable (GL_TEXTURE_2D);
|
||||
|
||||
clearGLError();
|
||||
#endif
|
||||
{
|
||||
const ScopedTextureBinding scopedTextureBinding;
|
||||
glBindTexture (GL_TEXTURE_2D, p->textureID);
|
||||
transientState->context.copyTexture (area, area, area.getWidth(), area.getHeight(), false);
|
||||
}
|
||||
|
||||
transientState->unbind();
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
void release()
|
||||
{
|
||||
transientState.reset();
|
||||
savedState.reset();
|
||||
}
|
||||
|
||||
void saveAndRelease()
|
||||
{
|
||||
if (transientState != nullptr)
|
||||
{
|
||||
savedState.reset (new SavedState (*this, transientState->width, transientState->height));
|
||||
transientState.reset();
|
||||
}
|
||||
}
|
||||
|
||||
bool reloadSavedCopy (OpenGLContext& context)
|
||||
{
|
||||
if (savedState != nullptr)
|
||||
{
|
||||
std::unique_ptr<SavedState> state;
|
||||
std::swap (state, savedState);
|
||||
|
||||
if (state->restore (context, *this))
|
||||
return true;
|
||||
|
||||
std::swap (state, savedState);
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
int getWidth() const noexcept { return transientState != nullptr ? transientState->width : 0; }
|
||||
int getHeight() const noexcept { return transientState != nullptr ? transientState->height : 0; }
|
||||
GLuint getTextureID() const noexcept { return transientState != nullptr ? transientState->textureID : 0; }
|
||||
|
||||
bool makeCurrentRenderingTarget()
|
||||
{
|
||||
// trying to use a framebuffer after saving it with saveAndRelease()! Be sure to call
|
||||
// reloadSavedCopy() to put it back into GPU memory before using it..
|
||||
jassert (savedState == nullptr);
|
||||
|
||||
if (transientState == nullptr)
|
||||
return false;
|
||||
|
||||
transientState->bind();
|
||||
return true;
|
||||
}
|
||||
|
||||
GLuint getFrameBufferID() const noexcept
|
||||
{
|
||||
return transientState != nullptr ? transientState->frameBufferID : 0;
|
||||
}
|
||||
|
||||
void releaseAsRenderingTarget()
|
||||
{
|
||||
if (transientState != nullptr)
|
||||
transientState->unbind();
|
||||
}
|
||||
|
||||
void clear (Colour colour)
|
||||
{
|
||||
if (makeCurrentRenderingTarget())
|
||||
{
|
||||
OpenGLHelpers::clear (colour);
|
||||
releaseAsRenderingTarget();
|
||||
}
|
||||
}
|
||||
|
||||
void makeCurrentAndClear()
|
||||
{
|
||||
if (makeCurrentRenderingTarget())
|
||||
{
|
||||
glClearColor (0, 0, 0, 0);
|
||||
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
||||
}
|
||||
}
|
||||
|
||||
bool readPixels (PixelARGB* target, const Rectangle<int>& area)
|
||||
{
|
||||
if (! makeCurrentRenderingTarget())
|
||||
return false;
|
||||
|
||||
glPixelStorei (GL_PACK_ALIGNMENT, 4);
|
||||
glReadPixels (area.getX(), area.getY(), area.getWidth(), area.getHeight(),
|
||||
JUCE_RGBA_FORMAT, GL_UNSIGNED_BYTE, target);
|
||||
|
||||
transientState->unbind();
|
||||
return true;
|
||||
}
|
||||
|
||||
bool writePixels (const PixelARGB* data, const Rectangle<int>& area)
|
||||
{
|
||||
OpenGLTargetSaver ts (transientState->context);
|
||||
|
||||
if (! makeCurrentRenderingTarget())
|
||||
return false;
|
||||
|
||||
glDisable (GL_DEPTH_TEST);
|
||||
glDisable (GL_BLEND);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
|
||||
OpenGLTexture tex;
|
||||
tex.loadARGB (data, area.getWidth(), area.getHeight());
|
||||
|
||||
glViewport (0, 0, transientState->width, transientState->height);
|
||||
transientState->context.copyTexture (area,
|
||||
Rectangle<int> (area.getX(),
|
||||
area.getY(),
|
||||
tex.getWidth(),
|
||||
tex.getHeight()),
|
||||
transientState->width,
|
||||
transientState->height,
|
||||
true,
|
||||
false);
|
||||
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
return true;
|
||||
}
|
||||
|
||||
private:
|
||||
/* Stores the currently-bound texture on construction, and re-binds it on destruction. */
|
||||
struct ScopedTextureBinding
|
||||
{
|
||||
|
|
@ -56,256 +240,249 @@ public:
|
|||
GLint prev{};
|
||||
};
|
||||
|
||||
Pimpl (OpenGLContext& c, const int w, const int h,
|
||||
const bool wantsDepthBuffer, const bool wantsStencilBuffer)
|
||||
: context (c), width (w), height (h),
|
||||
textureID (0), frameBufferID (0), depthOrStencilBuffer (0)
|
||||
class TransientState
|
||||
{
|
||||
// Framebuffer objects can only be created when the current thread has an active OpenGL
|
||||
// context. You'll need to create this object in one of the OpenGLContext's callbacks.
|
||||
jassert (OpenGLHelpers::isContextActive());
|
||||
public:
|
||||
TransientState (OpenGLContext& c,
|
||||
const int w,
|
||||
const int h,
|
||||
const bool wantsDepthBuffer,
|
||||
const bool wantsStencilBuffer)
|
||||
: context (c),
|
||||
width (w),
|
||||
height (h),
|
||||
textureID (0),
|
||||
frameBufferID (0),
|
||||
depthOrStencilBuffer (0)
|
||||
{
|
||||
// Framebuffer objects can only be created when the current thread has an active OpenGL
|
||||
// context. You'll need to create this object in one of the OpenGLContext's callbacks.
|
||||
jassert (OpenGLHelpers::isContextActive());
|
||||
|
||||
#if JUCE_WINDOWS || JUCE_LINUX || JUCE_BSD
|
||||
if (context.extensions.glGenFramebuffers == nullptr)
|
||||
#if JUCE_WINDOWS || JUCE_LINUX || JUCE_BSD
|
||||
if (context.extensions.glGenFramebuffers == nullptr)
|
||||
return;
|
||||
#endif
|
||||
#endif
|
||||
|
||||
context.extensions.glGenFramebuffers (1, &frameBufferID);
|
||||
bind();
|
||||
context.extensions.glGenFramebuffers (1, &frameBufferID);
|
||||
bind();
|
||||
|
||||
{
|
||||
const ScopedTextureBinding scopedTextureBinding;
|
||||
|
||||
glGenTextures (1, &textureID);
|
||||
glBindTexture (GL_TEXTURE_2D, textureID);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
|
||||
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
}
|
||||
|
||||
context.extensions.glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textureID, 0);
|
||||
|
||||
if (wantsDepthBuffer || wantsStencilBuffer)
|
||||
{
|
||||
context.extensions.glGenRenderbuffers (1, &depthOrStencilBuffer);
|
||||
context.extensions.glBindRenderbuffer (GL_RENDERBUFFER, depthOrStencilBuffer);
|
||||
jassert (context.extensions.glIsRenderbuffer (depthOrStencilBuffer));
|
||||
|
||||
#if JUCE_OPENGL_ES
|
||||
constexpr auto depthComponentConstant = (GLenum) GL_DEPTH_COMPONENT16;
|
||||
#else
|
||||
constexpr auto depthComponentConstant = (GLenum) GL_DEPTH_COMPONENT;
|
||||
#endif
|
||||
|
||||
context.extensions.glRenderbufferStorage (GL_RENDERBUFFER,
|
||||
(wantsDepthBuffer && wantsStencilBuffer) ? (GLenum) GL_DEPTH24_STENCIL8
|
||||
: depthComponentConstant,
|
||||
width, height);
|
||||
|
||||
GLint params = 0;
|
||||
context.extensions.glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_DEPTH_SIZE, ¶ms);
|
||||
context.extensions.glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthOrStencilBuffer);
|
||||
|
||||
if (wantsStencilBuffer)
|
||||
context.extensions.glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, depthOrStencilBuffer);
|
||||
}
|
||||
|
||||
unbind();
|
||||
}
|
||||
|
||||
~TransientState()
|
||||
{
|
||||
const ScopedTextureBinding scopedTextureBinding;
|
||||
if (OpenGLHelpers::isContextActive())
|
||||
{
|
||||
if (textureID != 0)
|
||||
glDeleteTextures (1, &textureID);
|
||||
|
||||
glGenTextures (1, &textureID);
|
||||
glBindTexture (GL_TEXTURE_2D, textureID);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
if (depthOrStencilBuffer != 0)
|
||||
context.extensions.glDeleteRenderbuffers (1, &depthOrStencilBuffer);
|
||||
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
if (frameBufferID != 0)
|
||||
context.extensions.glDeleteFramebuffers (1, &frameBufferID);
|
||||
|
||||
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
}
|
||||
}
|
||||
|
||||
bool createdOk() const
|
||||
{
|
||||
return frameBufferID != 0 && textureID != 0;
|
||||
}
|
||||
|
||||
void bind()
|
||||
{
|
||||
glGetIntegerv (GL_FRAMEBUFFER_BINDING, &prevFramebuffer);
|
||||
context.extensions.glBindFramebuffer (GL_FRAMEBUFFER, frameBufferID);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
}
|
||||
|
||||
context.extensions.glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textureID, 0);
|
||||
|
||||
if (wantsDepthBuffer || wantsStencilBuffer)
|
||||
void unbind()
|
||||
{
|
||||
context.extensions.glGenRenderbuffers (1, &depthOrStencilBuffer);
|
||||
context.extensions.glBindRenderbuffer (GL_RENDERBUFFER, depthOrStencilBuffer);
|
||||
jassert (context.extensions.glIsRenderbuffer (depthOrStencilBuffer));
|
||||
|
||||
context.extensions.glRenderbufferStorage (GL_RENDERBUFFER,
|
||||
(wantsDepthBuffer && wantsStencilBuffer) ? (GLenum) GL_DEPTH24_STENCIL8
|
||||
#if JUCE_OPENGL_ES
|
||||
: (GLenum) GL_DEPTH_COMPONENT16,
|
||||
#else
|
||||
: (GLenum) GL_DEPTH_COMPONENT,
|
||||
#endif
|
||||
width, height);
|
||||
|
||||
GLint params = 0;
|
||||
context.extensions.glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_DEPTH_SIZE, ¶ms);
|
||||
context.extensions.glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthOrStencilBuffer);
|
||||
|
||||
if (wantsStencilBuffer)
|
||||
context.extensions.glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, depthOrStencilBuffer);
|
||||
}
|
||||
|
||||
unbind();
|
||||
}
|
||||
|
||||
~Pimpl()
|
||||
{
|
||||
if (OpenGLHelpers::isContextActive())
|
||||
{
|
||||
if (textureID != 0)
|
||||
glDeleteTextures (1, &textureID);
|
||||
|
||||
if (depthOrStencilBuffer != 0)
|
||||
context.extensions.glDeleteRenderbuffers (1, &depthOrStencilBuffer);
|
||||
|
||||
if (frameBufferID != 0)
|
||||
context.extensions.glDeleteFramebuffers (1, &frameBufferID);
|
||||
|
||||
context.extensions.glBindFramebuffer (GL_FRAMEBUFFER, (GLuint) prevFramebuffer);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
}
|
||||
}
|
||||
|
||||
bool createdOk() const
|
||||
OpenGLContext& context;
|
||||
const int width, height;
|
||||
GLuint textureID, frameBufferID, depthOrStencilBuffer;
|
||||
|
||||
private:
|
||||
GLint prevFramebuffer{};
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE (TransientState)
|
||||
};
|
||||
|
||||
class SavedState
|
||||
{
|
||||
return frameBufferID != 0 && textureID != 0;
|
||||
}
|
||||
public:
|
||||
SavedState (Pimpl& buffer, const int w, const int h)
|
||||
: width (w),
|
||||
height (h),
|
||||
data ((size_t) (w * h))
|
||||
{
|
||||
buffer.readPixels (data, Rectangle<int> (w, h));
|
||||
}
|
||||
|
||||
void bind()
|
||||
{
|
||||
glGetIntegerv (GL_FRAMEBUFFER_BINDING, &prevFramebuffer);
|
||||
context.extensions.glBindFramebuffer (GL_FRAMEBUFFER, frameBufferID);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
}
|
||||
bool restore (OpenGLContext& context, Pimpl& buffer)
|
||||
{
|
||||
if (buffer.initialise (context, width, height))
|
||||
{
|
||||
buffer.writePixels (data, Rectangle<int> (width, height));
|
||||
return true;
|
||||
}
|
||||
|
||||
void unbind()
|
||||
{
|
||||
context.extensions.glBindFramebuffer (GL_FRAMEBUFFER, (GLuint) prevFramebuffer);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
OpenGLContext& context;
|
||||
const int width, height;
|
||||
GLuint textureID, frameBufferID, depthOrStencilBuffer;
|
||||
private:
|
||||
const int width, height;
|
||||
HeapBlock<PixelARGB> data;
|
||||
|
||||
private:
|
||||
GLint prevFramebuffer{};
|
||||
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SavedState)
|
||||
};
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE (Pimpl)
|
||||
std::unique_ptr<TransientState> transientState;
|
||||
std::unique_ptr<SavedState> savedState;
|
||||
};
|
||||
|
||||
//==============================================================================
|
||||
class OpenGLFrameBuffer::SavedState
|
||||
OpenGLFrameBuffer::OpenGLFrameBuffer()
|
||||
: pimpl (std::make_unique<Pimpl>())
|
||||
{
|
||||
public:
|
||||
SavedState (OpenGLFrameBuffer& buffer, const int w, const int h)
|
||||
: width (w), height (h),
|
||||
data ((size_t) (w * h))
|
||||
{
|
||||
buffer.readPixels (data, Rectangle<int> (w, h));
|
||||
}
|
||||
}
|
||||
|
||||
bool restore (OpenGLContext& context, OpenGLFrameBuffer& buffer)
|
||||
{
|
||||
if (buffer.initialise (context, width, height))
|
||||
{
|
||||
buffer.writePixels (data, Rectangle<int> (width, height));
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
private:
|
||||
const int width, height;
|
||||
HeapBlock<PixelARGB> data;
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SavedState)
|
||||
};
|
||||
|
||||
//==============================================================================
|
||||
OpenGLFrameBuffer::OpenGLFrameBuffer() {}
|
||||
OpenGLFrameBuffer::~OpenGLFrameBuffer() {}
|
||||
OpenGLFrameBuffer::~OpenGLFrameBuffer() = default;
|
||||
|
||||
bool OpenGLFrameBuffer::initialise (OpenGLContext& context, int width, int height)
|
||||
{
|
||||
jassert (context.isActive()); // The context must be active when creating a framebuffer!
|
||||
|
||||
pimpl.reset();
|
||||
pimpl.reset (new Pimpl (context, width, height, false, false));
|
||||
|
||||
if (! pimpl->createdOk())
|
||||
pimpl.reset();
|
||||
|
||||
return pimpl != nullptr;
|
||||
return pimpl->initialise (context, width, height);
|
||||
}
|
||||
|
||||
bool OpenGLFrameBuffer::initialise (OpenGLContext& context, const Image& image)
|
||||
bool OpenGLFrameBuffer::initialise (OpenGLContext& context, const Image& content)
|
||||
{
|
||||
if (! image.isARGB())
|
||||
return initialise (context, image.convertedToFormat (Image::ARGB));
|
||||
|
||||
Image::BitmapData bitmap (image, Image::BitmapData::readOnly);
|
||||
|
||||
return initialise (context, bitmap.width, bitmap.height)
|
||||
&& writePixels ((const PixelARGB*) bitmap.data, image.getBounds());
|
||||
return pimpl->initialise (context, content);
|
||||
}
|
||||
|
||||
bool OpenGLFrameBuffer::initialise (OpenGLFrameBuffer& other)
|
||||
{
|
||||
auto* p = other.pimpl.get();
|
||||
|
||||
if (p == nullptr)
|
||||
{
|
||||
pimpl.reset();
|
||||
return true;
|
||||
}
|
||||
|
||||
const Rectangle<int> area (pimpl->width, pimpl->height);
|
||||
|
||||
if (initialise (p->context, area.getWidth(), area.getHeight()))
|
||||
{
|
||||
pimpl->bind();
|
||||
|
||||
#if ! JUCE_ANDROID
|
||||
if (! pimpl->context.isCoreProfile())
|
||||
glEnable (GL_TEXTURE_2D);
|
||||
|
||||
clearGLError();
|
||||
#endif
|
||||
{
|
||||
const Pimpl::ScopedTextureBinding scopedTextureBinding;
|
||||
glBindTexture (GL_TEXTURE_2D, p->textureID);
|
||||
pimpl->context.copyTexture (area, area, area.getWidth(), area.getHeight(), false);
|
||||
}
|
||||
|
||||
pimpl->unbind();
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
return pimpl->initialise (other);
|
||||
}
|
||||
|
||||
void OpenGLFrameBuffer::release()
|
||||
{
|
||||
pimpl.reset();
|
||||
savedState.reset();
|
||||
pimpl->release();
|
||||
}
|
||||
|
||||
void OpenGLFrameBuffer::saveAndRelease()
|
||||
{
|
||||
if (pimpl != nullptr)
|
||||
{
|
||||
savedState.reset (new SavedState (*this, pimpl->width, pimpl->height));
|
||||
pimpl.reset();
|
||||
}
|
||||
pimpl->saveAndRelease();
|
||||
}
|
||||
|
||||
bool OpenGLFrameBuffer::reloadSavedCopy (OpenGLContext& context)
|
||||
{
|
||||
if (savedState != nullptr)
|
||||
{
|
||||
std::unique_ptr<SavedState> state;
|
||||
std::swap (state, savedState);
|
||||
|
||||
if (state->restore (context, *this))
|
||||
return true;
|
||||
|
||||
std::swap (state, savedState);
|
||||
}
|
||||
|
||||
return false;
|
||||
return pimpl->reloadSavedCopy (context);
|
||||
}
|
||||
|
||||
int OpenGLFrameBuffer::getWidth() const noexcept { return pimpl != nullptr ? pimpl->width : 0; }
|
||||
int OpenGLFrameBuffer::getHeight() const noexcept { return pimpl != nullptr ? pimpl->height : 0; }
|
||||
GLuint OpenGLFrameBuffer::getTextureID() const noexcept { return pimpl != nullptr ? pimpl->textureID : 0; }
|
||||
bool OpenGLFrameBuffer::isValid() const noexcept
|
||||
{
|
||||
return pimpl->isValid();
|
||||
}
|
||||
|
||||
int OpenGLFrameBuffer::getWidth() const noexcept
|
||||
{
|
||||
return pimpl->getWidth();
|
||||
}
|
||||
|
||||
int OpenGLFrameBuffer::getHeight() const noexcept
|
||||
{
|
||||
return pimpl->getHeight();
|
||||
}
|
||||
|
||||
GLuint OpenGLFrameBuffer::getTextureID() const noexcept
|
||||
{
|
||||
return pimpl->getTextureID();
|
||||
}
|
||||
|
||||
bool OpenGLFrameBuffer::makeCurrentRenderingTarget()
|
||||
{
|
||||
// trying to use a framebuffer after saving it with saveAndRelease()! Be sure to call
|
||||
// reloadSavedCopy() to put it back into GPU memory before using it..
|
||||
jassert (savedState == nullptr);
|
||||
return pimpl->makeCurrentRenderingTarget();
|
||||
}
|
||||
|
||||
if (pimpl == nullptr)
|
||||
return false;
|
||||
|
||||
pimpl->bind();
|
||||
return true;
|
||||
void OpenGLFrameBuffer::releaseAsRenderingTarget()
|
||||
{
|
||||
pimpl->releaseAsRenderingTarget();
|
||||
}
|
||||
|
||||
GLuint OpenGLFrameBuffer::getFrameBufferID() const noexcept
|
||||
{
|
||||
return pimpl != nullptr ? pimpl->frameBufferID : 0;
|
||||
return pimpl->getFrameBufferID();
|
||||
}
|
||||
|
||||
void OpenGLFrameBuffer::clear (Colour colour)
|
||||
{
|
||||
pimpl->clear (colour);
|
||||
}
|
||||
|
||||
void OpenGLFrameBuffer::makeCurrentAndClear()
|
||||
{
|
||||
pimpl->makeCurrentAndClear();
|
||||
}
|
||||
|
||||
bool OpenGLFrameBuffer::readPixels (PixelARGB* targetData, const Rectangle<int>& sourceArea)
|
||||
{
|
||||
return pimpl->readPixels (targetData, sourceArea);
|
||||
}
|
||||
|
||||
bool OpenGLFrameBuffer::writePixels (const PixelARGB* srcData, const Rectangle<int>& targetArea)
|
||||
{
|
||||
return pimpl->writePixels (srcData, targetArea);
|
||||
}
|
||||
|
||||
GLuint OpenGLFrameBuffer::getCurrentFrameBufferTarget() noexcept
|
||||
|
|
@ -315,64 +492,4 @@ GLuint OpenGLFrameBuffer::getCurrentFrameBufferTarget() noexcept
|
|||
return (GLuint) fb;
|
||||
}
|
||||
|
||||
void OpenGLFrameBuffer::releaseAsRenderingTarget()
|
||||
{
|
||||
if (pimpl != nullptr)
|
||||
pimpl->unbind();
|
||||
}
|
||||
|
||||
void OpenGLFrameBuffer::clear (Colour colour)
|
||||
{
|
||||
if (makeCurrentRenderingTarget())
|
||||
{
|
||||
OpenGLHelpers::clear (colour);
|
||||
releaseAsRenderingTarget();
|
||||
}
|
||||
}
|
||||
|
||||
void OpenGLFrameBuffer::makeCurrentAndClear()
|
||||
{
|
||||
if (makeCurrentRenderingTarget())
|
||||
{
|
||||
glClearColor (0, 0, 0, 0);
|
||||
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
|
||||
}
|
||||
}
|
||||
|
||||
bool OpenGLFrameBuffer::readPixels (PixelARGB* target, const Rectangle<int>& area)
|
||||
{
|
||||
if (! makeCurrentRenderingTarget())
|
||||
return false;
|
||||
|
||||
glPixelStorei (GL_PACK_ALIGNMENT, 4);
|
||||
glReadPixels (area.getX(), area.getY(), area.getWidth(), area.getHeight(),
|
||||
JUCE_RGBA_FORMAT, GL_UNSIGNED_BYTE, target);
|
||||
|
||||
pimpl->unbind();
|
||||
return true;
|
||||
}
|
||||
|
||||
bool OpenGLFrameBuffer::writePixels (const PixelARGB* data, const Rectangle<int>& area)
|
||||
{
|
||||
OpenGLTargetSaver ts (pimpl->context);
|
||||
|
||||
if (! makeCurrentRenderingTarget())
|
||||
return false;
|
||||
|
||||
glDisable (GL_DEPTH_TEST);
|
||||
glDisable (GL_BLEND);
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
|
||||
OpenGLTexture tex;
|
||||
tex.loadARGB (data, area.getWidth(), area.getHeight());
|
||||
|
||||
glViewport (0, 0, pimpl->width, pimpl->height);
|
||||
pimpl->context.copyTexture (area, Rectangle<int> (area.getX(), area.getY(),
|
||||
tex.getWidth(), tex.getHeight()),
|
||||
pimpl->width, pimpl->height, true, false);
|
||||
|
||||
JUCE_CHECK_OPENGL_ERROR
|
||||
return true;
|
||||
}
|
||||
|
||||
} // namespace juce
|
||||
|
|
|
|||
|
|
@ -86,7 +86,7 @@ public:
|
|||
|
||||
//==============================================================================
|
||||
/** Returns true if a valid buffer has been allocated. */
|
||||
bool isValid() const noexcept { return pimpl != nullptr; }
|
||||
bool isValid() const noexcept;
|
||||
|
||||
/** Returns the width of the buffer. */
|
||||
int getWidth() const noexcept;
|
||||
|
|
@ -132,9 +132,6 @@ private:
|
|||
class Pimpl;
|
||||
std::unique_ptr<Pimpl> pimpl;
|
||||
|
||||
class SavedState;
|
||||
std::unique_ptr<SavedState> savedState;
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (OpenGLFrameBuffer)
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue