forked from Mirrorlandia_minetest/irrlicht
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
// Copyright (C) 2015 Patryk Nadrowski
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// Copyright (C) 2009-2010 Amundis
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// 2017 modified by Michael Zeilfelder (unifying extension handlers)
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in Irrlicht.h
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#include "ExtensionHandler.h"
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#include "irrString.h"
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#include "SMaterial.h"
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#include "fast_atof.h"
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#include <mt_opengl.h>
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namespace irr
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{
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namespace video
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{
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void COpenGL3ExtensionHandler::initExtensions()
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{
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GLint major, minor;
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glGetIntegerv(GL_MAJOR_VERSION, &major);
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glGetIntegerv(GL_MINOR_VERSION, &minor);
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Version = 100 * major + 10 * minor;
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GLint ext_count = 0;
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GL.GetIntegerv(GL_NUM_EXTENSIONS, &ext_count);
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for (int k = 0; k < ext_count; k++) {
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auto ext_name = (char *)GL.GetStringi(GL_EXTENSIONS, k);
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for (size_t j=0; j<IRR_OGLES_Feature_Count; ++j) {
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if (!strcmp(getFeatureString(j), ext_name)) {
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FeatureAvailable[j] = true;
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break;
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}
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}
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}
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GLint val=0;
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glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &val);
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Feature.MaxTextureUnits = static_cast<u8>(val);
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#ifdef GL_EXT_texture_filter_anisotropic
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if (FeatureAvailable[IRR_GL_EXT_texture_filter_anisotropic])
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{
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glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &val);
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MaxAnisotropy = static_cast<u8>(val);
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}
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#endif
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#ifdef GL_MAX_ELEMENTS_INDICES
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glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &val);
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MaxIndices=val;
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#endif
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glGetIntegerv(GL_MAX_TEXTURE_SIZE, &val);
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MaxTextureSize=static_cast<u32>(val);
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#ifdef GL_EXT_texture_lod_bias
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if (FeatureAvailable[IRR_GL_EXT_texture_lod_bias])
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glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS_EXT, &MaxTextureLODBias);
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#endif
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glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine);
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glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, DimAliasedPoint);
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Feature.MaxTextureUnits = core::min_(Feature.MaxTextureUnits, static_cast<u8>(MATERIAL_MAX_TEXTURES));
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Feature.ColorAttachment = 1;
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}
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} // end namespace video
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} // end namespace irr
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