0baaac5e9a
This reverts commit a8557d2169e14997637f57bc897640c8882d4a46. Change-Id: I36d4883d548fc47ba6c0b4a42012107d0d2f85a6
72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <GLES2/gl2.h>
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#include "Properties.h"
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#include "Stencil.h"
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namespace android {
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namespace uirenderer {
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Stencil::Stencil(): mState(kDisabled) {
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}
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uint32_t Stencil::getStencilSize() {
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return STENCIL_BUFFER_SIZE;
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}
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void Stencil::clear() {
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glClearStencil(0);
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glClear(GL_STENCIL_BUFFER_BIT);
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}
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void Stencil::enableTest() {
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if (mState != kTest) {
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enable();
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glStencilFunc(GL_LESS, 0x0, 0x1);
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// We only want to test, let's keep everything
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glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
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mState = kTest;
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}
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}
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void Stencil::enableWrite() {
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if (mState != kWrite) {
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enable();
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glStencilFunc(GL_ALWAYS, 0x1, 0x1);
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// The test always passes so the first two values are meaningless
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glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
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mState = kWrite;
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}
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}
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void Stencil::enable() {
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if (!mState == kDisabled) {
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glEnable(GL_STENCIL_TEST);
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}
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}
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void Stencil::disable() {
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if (mState != kDisabled) {
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glDisable(GL_STENCIL_TEST);
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mState = kDisabled;
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}
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}
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}; // namespace uirenderer
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}; // namespace android
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