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Cogl Reference Manual | |
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void cogl_clip_push (float x_offset,float y_offset,float width,float height); void cogl_clip_push_window_rect (float x_offset,float y_offset,float width,float height); void cogl_clip_ensure (void); void cogl_clip_stack_save (void); void cogl_clip_stack_restore (void);
void cogl_clip_push (float x_offset,float y_offset,float width,float height);
cogl_clip_push has been deprecated since version 1.16 and should not be used in newly-written code. The x, y, width, height arguments are inconsistent
with other API that specify rectangles in model space, and when used
with a coordinate space that puts the origin at the center and y+
extending up, it's awkward to use. Please use
cogl_framebuffer_push_rectangle_clip()
Specifies a rectangular clipping area for all subsequent drawing operations. Any drawing commands that extend outside the rectangle will be clipped so that only the portion inside the rectangle will be displayed. The rectangle dimensions are transformed by the current model-view matrix.
The rectangle is intersected with the current clip region. To undo
the effect of this function, call cogl_clip_pop().
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left edge of the clip rectangle |
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top edge of the clip rectangle |
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width of the clip rectangle |
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height of the clip rectangle |
void cogl_clip_push_window_rect (float x_offset,float y_offset,float width,float height);
cogl_clip_push_window_rect has been deprecated since version 1.16 and should not be used in newly-written code. Use cogl_framebuffer_push_scissor_clip() instead
Specifies a rectangular clipping area for all subsequent drawing operations. Any drawing commands that extend outside the rectangle will be clipped so that only the portion inside the rectangle will be displayed. The rectangle dimensions are not transformed by the current model-view matrix.
The rectangle is intersected with the current clip region. To undo
the effect of this function, call cogl_clip_pop().
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left edge of the clip rectangle in window coordinates |
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top edge of the clip rectangle in window coordinates |
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width of the clip rectangle |
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height of the clip rectangle |
void cogl_clip_ensure (void);
cogl_clip_ensure has been deprecated since version 1.2 and should not be used in newly-written code. Calling this function has no effect
Ensures that the current clipping region has been set in GL. This will automatically be called before any Cogl primitives but it maybe be neccessary to call if you are using raw GL calls with clipping.
Since 1.0
void cogl_clip_stack_save (void);
cogl_clip_stack_save has been deprecated since version 1.2 and should not be used in newly-written code. This was originally added to allow us to save the
clip stack when switching to an offscreen framebuffer, but it's
not necessary anymore given that framebuffers now own separate
clip stacks which will be automatically switched between when a
new buffer is set. Calling this function has no effect
Save the entire state of the clipping stack and then clear all
clipping. The previous state can be returned to with
cogl_clip_stack_restore(). Each call to cogl_clip_push() after this
must be matched by a call to cogl_clip_pop() before calling
cogl_clip_stack_restore().
Since 0.8.2
void cogl_clip_stack_restore (void);
cogl_clip_stack_restore has been deprecated since version 1.2 and should not be used in newly-written code. This was originally added to allow us to restore
the clip stack when switching back from an offscreen framebuffer,
but it's not necessary anymore given that framebuffers now own
separate clip stacks which will be automatically switched between
when a new buffer is set. Calling this function has no effect
Restore the state of the clipping stack that was previously saved
by cogl_clip_stack_save().
Since 0.8.2