188 lines
7.4 KiB
C++
188 lines
7.4 KiB
C++
// Copyright (C) 2009-2010 Amundis
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// Heavily based on the OpenGL driver implemented by Nikolaus Gebhardt
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// and OpenGL ES driver implemented by Christian Stehno
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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 "IrrCompileConfig.h"
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#ifdef _IRR_COMPILE_WITH_OGLES2_
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#include "COGLES2ExtensionHandler.h"
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#include "COGLES2Driver.h"
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#include "fast_atof.h"
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#include "irrString.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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static const char* const OGLES2FeatureStrings[COGLES2ExtensionHandler::IRR_OGLES2_Feature_Count] =
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{
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"GL_AMD_compressed_3DC_texture",
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"GL_AMD_compressed_ATC_texture",
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"GL_AMD_performance_monitor",
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"GL_AMD_program_binary_Z400",
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"GL_ARB_texture_env_combine",
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"GL_ARB_texture_env_dot3",
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"GL_EXT_multi_draw_arrays",
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"GL_EXT_texture_compression_dxt1",
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"GL_EXT_texture_filter_anisotropic",
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"GL_EXT_texture_format_BGRA8888",
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"GL_EXT_texture_type_2_10_10_10_REV",
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"GL_IMG_read_format",
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"GL_IMG_texture_compression_pvrtc",
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"GL_IMG_texture_env_enhanced_fixed_function",
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"GL_IMG_texture_format_BGRA8888",
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"GL_IMG_user_clip_planes",
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"GL_IMG_vertex_program",
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"GL_NV_fence",
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"GL_OES_blend_equation_separate",
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"GL_OES_blend_func_separate",
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"GL_OES_blend_subtract",
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"GL_OES_byte_coordinates",
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"GL_OES_compressed_ETC1_RGB8_texture",
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"GL_OES_compressed_paletted_texture",
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"GL_OES_depth24",
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"GL_OES_depth32",
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"GL_OES_depth_texture",
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"GL_OES_draw_texture",
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"GL_OES_EGL_image",
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"GL_OES_element_index_uint",
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"GL_OES_extended_matrix_palette",
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"GL_OES_fbo_render_mipmap",
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"GL_OES_fixed_point",
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"GL_OES_fragment_precision_high",
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"GL_OES_framebuffer_object",
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"GL_OES_get_program_binary",
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"GL_OES_mapbuffer",
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"GL_OES_matrix_get",
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"GL_OES_matrix_palette",
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"GL_OES_packed_depth_stencil",
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"GL_OES_point_size_array",
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"GL_OES_point_sprite",
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"GL_OES_query_matrix",
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"GL_OES_read_format",
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"GL_OES_rgb8_rgba8",
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"GL_OES_single_precision",
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"GL_OES_standard_derivatives",
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"GL_OES_stencil1",
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"GL_OES_stencil4",
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"GL_OES_stencil8",
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"GL_OES_stencil_wrap",
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"GL_OES_texture_3D",
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"GL_OES_texture_cube_map",
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"GL_OES_texture_env_crossbar",
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"GL_OES_texture_float",
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"GL_OES_texture_float_linear",
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"GL_OES_texture_half_float",
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"GL_OES_texture_half_float_linear",
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"GL_OES_texture_mirrored_repeat",
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"GL_OES_texture_npot",
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"GL_OES_vertex_half_float",
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"GL_OES_vertex_type_10_10_10_2",
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"GL_QCOM_driver_control",
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"GL_QCOM_performance_monitor_global_mode"
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};
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COGLES2ExtensionHandler::COGLES2ExtensionHandler() :
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EGLVersion( 0 ), Version( 0 ), MaxTextureUnits( 0 ), MaxLights( 0 ), MaxAnisotropy( 1 ),
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MaxUserClipPlanes( 1 ), MaxTextureSize(1), CommonProfile( false ), MultiTextureExtension( false ),
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MultiSamplingExtension( false ), StencilBuffer( false )
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{
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for ( u32 i = 0; i < IRR_OGLES2_Feature_Count; ++i )
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FeatureAvailable[i] = false;
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}
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void COGLES2ExtensionHandler::dump() const
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{
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for ( u32 i = 0; i < IRR_OGLES2_Feature_Count; ++i )
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os::Printer::log( OGLES2FeatureStrings[i], FeatureAvailable[i] ? " true" : " false" );
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}
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void COGLES2ExtensionHandler::initExtensions( COGLES2Driver* driver,
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EGLDisplay display,
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bool withStencil )
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{
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#ifdef EGL_VERSION_1_0
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const f32 egl_ver = core::fast_atof( reinterpret_cast<const c8*>( eglQueryString( display, EGL_VERSION ) ) );
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EGLVersion = static_cast<u16>( core::floor32( egl_ver ) * 100 + core::round32( core::fract( egl_ver ) * 10.0f ) );
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core::stringc eglExtensions = eglQueryString( display, EGL_EXTENSIONS );
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os::Printer::log( eglExtensions.c_str() );
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#endif
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const core::stringc stringVer( glGetString( GL_VERSION ) );
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//CommonProfile = ( stringVer[11] == 'M' );
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const f32 ogl_ver = core::fast_atof( stringVer.c_str() + 13 );
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Version = static_cast<u16>( core::floor32( ogl_ver ) * 100 + core::round32( core::fract( ogl_ver ) * 10.0f ) );
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core::stringc extensions = glGetString( GL_EXTENSIONS );
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os::Printer::log( extensions.c_str() );
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{
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const u32 size = extensions.size() + 1;
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c8* str = new c8[size];
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strncpy( str, extensions.c_str(), extensions.size() );
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str[extensions.size()] = ' ';
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c8* p = str;
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for ( u32 i = 0; i < size; ++i )
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{
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if ( str[i] == ' ' )
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{
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str[i] = 0;
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if ( *p )
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for ( u32 j = 0; j < IRR_OGLES2_Feature_Count; ++j )
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{
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if ( !strcmp( OGLES2FeatureStrings[j], p ) )
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{
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FeatureAvailable[j] = true;
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break;
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}
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}
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p = p + strlen( p ) + 1;
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}
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}
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delete [] str;
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}
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#ifndef GL_BGRA
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// whoa, pretty badly implemented extension...
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if ( FeatureAvailable[IRR_IMG_texture_format_BGRA8888] || FeatureAvailable[IRR_EXT_texture_format_BGRA8888] )
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GL_BGRA = 0x80E1;
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else
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GL_BGRA = GL_RGBA;
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#endif
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GLint val = 0;
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glGetIntegerv( GL_MAX_TEXTURE_IMAGE_UNITS, &val );
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MaxTextureUnits = core::min_( MATERIAL_MAX_TEXTURES, static_cast<u32>( val ) );
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MultiTextureExtension = true;
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//TODO : OpenGL ES 2.0 Port
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//glGetIntegerv(GL_MAX_LIGHTS, &val);
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MaxLights = static_cast<u8>( val );
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#ifdef GL_EXT_texture_filter_anisotropic
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if ( FeatureAvailable[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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glGetIntegerv(GL_MAX_TEXTURE_SIZE, &val);
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MaxTextureSize=static_cast<u32>(val);
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if (( Version > 100 ) || FeatureAvailable[IRR_IMG_user_clip_planes] )
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{
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//TODO : OpenGL ES 2.0 Port
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//glGetIntegerv(GL_MAX_CLIP_PLANES, &val);
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val = 6;
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MaxUserClipPlanes = static_cast<u8>( val );
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}
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}
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} // end namespace video
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} // end namespace irr
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#endif // _IRR_COMPILE_WITH_OGLES21_
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