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C++ GrDrawState::setEdgeAAData方法代码示例

本文整理汇总了C++中GrDrawState::setEdgeAAData方法的典型用法代码示例。如果您正苦于以下问题:C++ GrDrawState::setEdgeAAData方法的具体用法?C++ GrDrawState::setEdgeAAData怎么用?C++ GrDrawState::setEdgeAAData使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在GrDrawState的用法示例。


在下文中一共展示了GrDrawState::setEdgeAAData方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: onDrawPath


//.........这里部分代码省略.........
        if (drawState->getViewInverse(&vmi)) {
            vmi.mapRect(&bounds);
        }
        *vert++ = GrPoint::Make(bounds.fLeft, bounds.fTop);
        *vert++ = GrPoint::Make(bounds.fLeft, bounds.fBottom);
        *vert++ = GrPoint::Make(bounds.fRight, bounds.fBottom);
        *vert++ = GrPoint::Make(bounds.fRight, bounds.fTop);
        subpathVertCount[subpath++] = 4;
    }

    GrAssert(subpath == subpathCnt);
    GrAssert((vert - base) <= maxPts);

    size_t count = vert - base;

    if (count < 3) {
        return true;
    }

    if (subpathCnt == 1 && !inverted && path.isConvex()) {
        if (antiAlias) {
            GrEdgeArray edges;
            GrMatrix inverse, matrix = drawState->getViewMatrix();
            drawState->getViewInverse(&inverse);

            count = computeEdgesAndIntersect(matrix, inverse, base, count, &edges, 0.0f);
            size_t maxEdges = target->getMaxEdges();
            if (count == 0) {
                return true;
            }
            if (count <= maxEdges) {
                // All edges fit; upload all edges and draw all verts as a fan
                target->setVertexSourceToArray(layout, base, count);
                drawState->setEdgeAAData(&edges[0], count);
                target->drawNonIndexed(kTriangleFan_PrimitiveType, 0, count);
            } else {
                // Upload "maxEdges" edges and verts at a time, and draw as
                // separate fans
                for (size_t i = 0; i < count - 2; i += maxEdges - 2) {
                    edges[i] = edges[0];
                    base[i] = base[0];
                    int size = GR_CT_MIN(count - i, maxEdges);
                    target->setVertexSourceToArray(layout, &base[i], size);
                    drawState->setEdgeAAData(&edges[i], size);
                    target->drawNonIndexed(kTriangleFan_PrimitiveType, 0, size);
                }
            }
            drawState->setEdgeAAData(NULL, 0);
        } else {
            target->setVertexSourceToArray(layout, base, count);
            target->drawNonIndexed(kTriangleFan_PrimitiveType, 0, count);
        }
        return true;
    }

    if (antiAlias) {
        // Run the tesselator once to get the boundaries.
        GrBoundaryTess btess(count, fill_type_to_glu_winding_rule(fill));
        btess.addVertices(base, subpathVertCount, subpathCnt);

        GrMatrix inverse, matrix = drawState->getViewMatrix();
        if (!drawState->getViewInverse(&inverse)) {
            return false;
        }

        if (btess.vertices().count() > USHRT_MAX) {
开发者ID:0omega,项目名称:platform_external_skia,代码行数:67,代码来源:GrTesselatedPathRenderer.cpp


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