28 lines
845 B
C
28 lines
845 B
C
// dvx_comp.h — Layer 3: Dirty rectangle compositor for DV/X GUI
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#ifndef DVX_COMP_H
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#define DVX_COMP_H
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#include "dvxTypes.h"
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// Initialize the dirty list
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void dirtyListInit(DirtyListT *dl);
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// Add a rectangle to the dirty list
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void dirtyListAdd(DirtyListT *dl, int32_t x, int32_t y, int32_t w, int32_t h);
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// Merge overlapping/adjacent dirty rects to reduce redraw work
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void dirtyListMerge(DirtyListT *dl);
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// Clear the dirty list
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void dirtyListClear(DirtyListT *dl);
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// Flush a single rectangle from backbuffer to LFB
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void flushRect(DisplayT *d, const BlitOpsT *ops, const RectT *r);
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// Intersect two rectangles, returns true if intersection is non-empty
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bool rectIntersect(const RectT *a, const RectT *b, RectT *result);
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// Test if a rectangle is empty (zero or negative area)
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bool rectIsEmpty(const RectT *r);
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#endif // DVX_COMP_H
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