mirror of https://github.com/axmolengine/axmol.git
113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
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/****************************************************************************
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Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "DeviceInfoGL.h"
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#include "platform/CCGL.h"
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CC_BACKEND_BEGIN
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bool DeviceInfoGL::init()
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{
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glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &_maxAttributes);
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glGetIntegerv(GL_MAX_TEXTURE_SIZE, &_maxTextureSize);
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glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &_maxTextureUnits);
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_glExtensions = (const char*)glGetString(GL_EXTENSIONS);
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return true;
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}
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const char* DeviceInfoGL::getVendor() const
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{
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return (const char*)glGetString(GL_VENDOR);
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}
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const char* DeviceInfoGL::getRenderer() const
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{
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return (const char*)glGetString(GL_RENDERER);
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}
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const char* DeviceInfoGL::getVersion() const
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{
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return (const char*)glGetString(GL_VERSION);
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}
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const char* DeviceInfoGL::getExtension() const
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{
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return _glExtensions.c_str();
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}
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bool DeviceInfoGL::checkForFeatureSupported(FeatureType feature)
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{
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bool featureSupported = false;
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switch (feature)
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{
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case FeatureType::ETC1:
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#ifdef GL_ETC1_RGB8_OES //GL_ETC1_RGB8_OES is not defined in old opengl version
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featureSupported = checkForGLExtension("GL_OES_compressed_ETC1_RGB8_texture");
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#endif
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break;
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case FeatureType::S3TC:
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#ifdef GL_EXT_texture_compression_s3tc
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featureSupported = checkForGLExtension("GL_EXT_texture_compression_s3tc");
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#endif
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break;
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case FeatureType::AMD_COMPRESSED_ATC:
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featureSupported = checkForGLExtension("GL_AMD_compressed_ATC_texture");
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break;
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case FeatureType::PVRTC:
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featureSupported = checkForGLExtension("GL_IMG_texture_compression_pvrtc");
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break;
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case FeatureType::IMG_FORMAT_BGRA8888:
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featureSupported = checkForGLExtension("GL_IMG_texture_format_BGRA8888");
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break;
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case FeatureType::DISCARD_FRAMEBUFFER:
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featureSupported = checkForGLExtension("GL_EXT_discard_framebuffer");
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break;
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case FeatureType::PACKED_DEPTH_STENCIL:
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featureSupported = checkForGLExtension("GL_OES_packed_depth_stencil");
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break;
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case FeatureType::VAO:
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#ifdef CC_PLATFORM_PC
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featureSupported = checkForGLExtension("vertex_array_object");
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#else
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featureSupported = checkForGLExtension("GL_OES_vertex_array_object");
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#endif
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break;
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case FeatureType::MAPBUFFER:
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featureSupported = checkForGLExtension("GL_OES_mapbuffer");
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break;
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case FeatureType::DEPTH24:
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featureSupported = checkForGLExtension("GL_OES_depth24");
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break;
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default:
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break;
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}
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return featureSupported;
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}
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bool DeviceInfoGL::checkForGLExtension(const std::string &searchName) const
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{
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return _glExtensions.find(searchName) != std::string::npos;
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}
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CC_BACKEND_END
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