a5aed0d589
This adds the ability to blend with the framebuffer using Darken, Lighten, Add, Multiply, Overlay and Screen. Change-Id: Iae01a53797d4ad39c373cba6ff2a42293129da1a
97 lines
2.7 KiB
C++
97 lines
2.7 KiB
C++
/*
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* Copyright (C) 2010 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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#ifndef ANDROID_UI_EXTENSIONS_H
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#define ANDROID_UI_EXTENSIONS_H
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#include <utils/SortedVector.h>
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#include <utils/String8.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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namespace android {
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namespace uirenderer {
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///////////////////////////////////////////////////////////////////////////////
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// Defines
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///////////////////////////////////////////////////////////////////////////////
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// Debug
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#define DEBUG_EXTENSIONS 0
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// Debug
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#if DEBUG_EXTENSIONS
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#define EXT_LOGD(...) LOGD(__VA_ARGS__)
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#else
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#define EXT_LOGD(...)
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#endif
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class Extensions {
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public:
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Extensions() {
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const char* buffer = (const char*) glGetString(GL_EXTENSIONS);
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const char* current = buffer;
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const char* head = current;
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EXT_LOGD("Available GL extensions:");
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do {
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head = strchr(current, ' ');
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String8 s(current, head ? head - current : strlen(current));
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if (s.length()) {
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mExtensionList.add(s);
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EXT_LOGD(" %s", s.string());
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}
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current = head + 1;
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} while (head);
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mHasNPot = hasExtension("GL_OES_texture_npot");
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mHasDrawPath = hasExtension("GL_NV_draw_path");
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mHasCoverageSample = hasExtension("GL_NV_coverage_sample");
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mHasFramebufferFetch = hasExtension("GL_NV_shader_framebuffer_fetch");
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mExtensions = buffer;
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}
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inline bool hasNPot() const { return mHasNPot; }
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inline bool hasDrawPath() const { return mHasDrawPath; }
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inline bool hasCoverageSample() const { return mHasCoverageSample; }
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inline bool hasFramebufferFetch() const { return mHasFramebufferFetch; }
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bool hasExtension(const char* extension) const {
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const String8 s(extension);
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return mExtensionList.indexOf(s) >= 0;
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}
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void dump() {
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LOGD("Supported extensions:\n%s", mExtensions);
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}
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private:
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SortedVector<String8> mExtensionList;
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const char* mExtensions;
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bool mHasNPot;
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bool mHasDrawPath;
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bool mHasCoverageSample;
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bool mHasFramebufferFetch;
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}; // class Extensions
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_UI_EXTENSIONS_H
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