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Unified Diff: include/gpu/GrPaint.h

Issue 21877006: Add blend optimization helpers and use to convert rect draws to clears. (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: change src to rect in comment Created 7 years, 4 months ago
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Index: include/gpu/GrPaint.h
diff --git a/include/gpu/GrPaint.h b/include/gpu/GrPaint.h
index 9e326f049525c4c5b092570571ef0c417399dbb7..59343e70ec1d4f2b043ca9636c569b583fdfc42d 100644
--- a/include/gpu/GrPaint.h
+++ b/include/gpu/GrPaint.h
@@ -174,7 +174,28 @@ public:
this->resetColorFilter();
}
+ /**
+ * Determines whether the drawing with this paint is opaque with respect to both color blending
+ * and fractional coverage. It does not consider whether AA has been enabled on the paint or
+ * not. Depending upon whether multisampling or coverage-based AA is in use, AA may make the
+ * result only apply to the interior of primitives.
+ *
+ */
+ bool isOpaque() const;
+
+ /**
+ * Returns true if isOpaque would return true and the paint represents a solid constant color
+ * draw. If the result is true, constantColor will be updated to contain the constant color.
+ */
+ bool isOpaqueAndConstantColor(GrColor* constantColor) const;
+
private:
+
+ /**
+ * Helper for isOpaque and isOpaqueAndConstantColor.
+ */
+ bool getOpaqueAndKnownColor(GrColor* solidColor, uint32_t* solidColorKnownComponents) const;
+
/**
* Called when the source coord system from which geometry is rendered changes. It ensures that
* the local coordinates seen by effects remains unchanged. oldToNew gives the transformation
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