PDGL_API const GLubyte *pdglGetString(GLenum name) { if(pglGetString) { return(pglGetString(name)); } pglGetString=pdglGetProcAddress("glGetString"); return(pglGetString(name)); }
void GL_InitExtensions( void ) { // initialize gl extensions GL_CheckExtension( "OpenGL 1.1.0", opengl_110funcs, NULL, GL_OPENGL_110 ); // get our various GL strings glConfig.vendor_string = pglGetString( GL_VENDOR ); glConfig.renderer_string = pglGetString( GL_RENDERER ); glConfig.version_string = pglGetString( GL_VERSION ); glConfig.extensions_string = pglGetString( GL_EXTENSIONS ); MsgDev( D_INFO, "Video: %s\n", glConfig.renderer_string ); // initalize until base opengl functions loaded GL_CheckExtension( "glDrawRangeElements", drawrangeelementsfuncs, "gl_drawrangeelments", GL_DRAW_RANGEELEMENTS_EXT ); if( !GL_Support( GL_DRAW_RANGEELEMENTS_EXT )) GL_CheckExtension( "GL_EXT_draw_range_elements", drawrangeelementsextfuncs, "gl_drawrangeelments", GL_DRAW_RANGEELEMENTS_EXT ); // multitexture glConfig.max_texture_units = glConfig.max_texture_coords = glConfig.max_teximage_units = 1; GL_CheckExtension( "GL_ARB_multitexture", multitexturefuncs, "gl_arb_multitexture", GL_ARB_MULTITEXTURE ); if( GL_Support( GL_ARB_MULTITEXTURE )) { pglGetIntegerv( GL_MAX_TEXTURE_UNITS_ARB, &glConfig.max_texture_units ); GL_CheckExtension( "GL_ARB_texture_env_combine", NULL, "gl_texture_env_combine", GL_ENV_COMBINE_EXT ); if( !GL_Support( GL_ENV_COMBINE_EXT )) GL_CheckExtension( "GL_EXT_texture_env_combine", NULL, "gl_texture_env_combine", GL_ENV_COMBINE_EXT ); if( GL_Support( GL_ENV_COMBINE_EXT )) GL_CheckExtension( "GL_ARB_texture_env_dot3", NULL, "gl_texture_env_dot3", GL_DOT3_ARB_EXT ); } else { GL_CheckExtension( "GL_SGIS_multitexture", sgis_multitexturefuncs, "gl_sgis_multitexture", GL_ARB_MULTITEXTURE ); if( GL_Support( GL_ARB_MULTITEXTURE )) glConfig.max_texture_units = 2; } if( glConfig.max_texture_units == 1 ) GL_SetExtension( GL_ARB_MULTITEXTURE, false ); // 3d texture support GL_CheckExtension( "GL_EXT_texture3D", texture3dextfuncs, "gl_texture_3d", GL_TEXTURE_3D_EXT ); if( GL_Support( GL_TEXTURE_3D_EXT )) { pglGetIntegerv( GL_MAX_3D_TEXTURE_SIZE, &glConfig.max_3d_texture_size ); if( glConfig.max_3d_texture_size < 32 ) { GL_SetExtension( GL_TEXTURE_3D_EXT, false ); MsgDev( D_ERROR, "GL_EXT_texture3D reported bogus GL_MAX_3D_TEXTURE_SIZE, disabled\n" ); } } GL_CheckExtension( "GL_SGIS_generate_mipmap", NULL, "gl_sgis_generate_mipmaps", GL_SGIS_MIPMAPS_EXT ); // hardware cubemaps GL_CheckExtension( "GL_ARB_texture_cube_map", NULL, "gl_texture_cubemap", GL_TEXTURECUBEMAP_EXT ); if( GL_Support( GL_TEXTURECUBEMAP_EXT )) { pglGetIntegerv( GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, &glConfig.max_cubemap_size ); // check for seamless cubemaps too GL_CheckExtension( "GL_ARB_seamless_cube_map", NULL, "gl_seamless_cubemap", GL_ARB_SEAMLESS_CUBEMAP ); } // point particles extension GL_CheckExtension( "GL_EXT_point_parameters", pointparametersfunc, NULL, GL_EXT_POINTPARAMETERS ); GL_CheckExtension( "GL_ARB_texture_non_power_of_two", NULL, "gl_texture_npot", GL_ARB_TEXTURE_NPOT_EXT ); GL_CheckExtension( "GL_ARB_texture_compression", texturecompressionfuncs, "gl_dds_hardware_support", GL_TEXTURE_COMPRESSION_EXT ); GL_CheckExtension( "GL_EXT_compiled_vertex_array", compiledvertexarrayfuncs, "gl_cva_support", GL_CUSTOM_VERTEX_ARRAY_EXT ); if( !GL_Support( GL_CUSTOM_VERTEX_ARRAY_EXT )) GL_CheckExtension( "GL_SGI_compiled_vertex_array", compiledvertexarrayfuncs, "gl_cva_support", GL_CUSTOM_VERTEX_ARRAY_EXT ); GL_CheckExtension( "GL_EXT_texture_edge_clamp", NULL, "gl_clamp_to_edge", GL_CLAMPTOEDGE_EXT ); if( !GL_Support( GL_CLAMPTOEDGE_EXT )) GL_CheckExtension("GL_SGIS_texture_edge_clamp", NULL, "gl_clamp_to_edge", GL_CLAMPTOEDGE_EXT ); glConfig.max_texture_anisotropy = 0.0f; GL_CheckExtension( "GL_EXT_texture_filter_anisotropic", NULL, "gl_ext_anisotropic_filter", GL_ANISOTROPY_EXT ); if( GL_Support( GL_ANISOTROPY_EXT )) pglGetFloatv( GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &glConfig.max_texture_anisotropy ); GL_CheckExtension( "GL_EXT_texture_lod_bias", NULL, "gl_ext_texture_lodbias", GL_TEXTURE_LODBIAS ); if( GL_Support( GL_TEXTURE_LODBIAS )) pglGetFloatv( GL_MAX_TEXTURE_LOD_BIAS_EXT, &glConfig.max_texture_lodbias ); GL_CheckExtension( "GL_ARB_texture_border_clamp", NULL, "gl_ext_texborder_clamp", GL_CLAMP_TEXBORDER_EXT ); GL_CheckExtension( "GL_EXT_blend_minmax", blendequationfuncs, "gl_ext_customblend", GL_BLEND_MINMAX_EXT ); GL_CheckExtension( "GL_EXT_blend_subtract", blendequationfuncs, "gl_ext_customblend", GL_BLEND_SUBTRACT_EXT ); GL_CheckExtension( "glStencilOpSeparate", gl2separatestencilfuncs, "gl_separate_stencil", GL_SEPARATESTENCIL_EXT ); if( !GL_Support( GL_SEPARATESTENCIL_EXT )) GL_CheckExtension("GL_ATI_separate_stencil", atiseparatestencilfuncs, "gl_separate_stencil", GL_SEPARATESTENCIL_EXT ); GL_CheckExtension( "GL_EXT_stencil_two_side", stenciltwosidefuncs, "gl_stenciltwoside", GL_STENCILTWOSIDE_EXT ); GL_CheckExtension( "GL_ARB_vertex_buffer_object", vbofuncs, "gl_vertex_buffer_object", GL_ARB_VERTEX_BUFFER_OBJECT_EXT ); // we don't care if it's an extension or not, they are identical functions, so keep it simple in the rendering code #ifndef __ANDROID__ if( pglDrawRangeElementsEXT == NULL ) pglDrawRangeElementsEXT = pglDrawRangeElements; #endif GL_CheckExtension( "GL_ARB_texture_env_add", NULL, "gl_texture_env_add", GL_TEXTURE_ENV_ADD_EXT ); // vp and fp shaders GL_CheckExtension( "GL_ARB_shader_objects", shaderobjectsfuncs, "gl_shaderobjects", GL_SHADER_OBJECTS_EXT ); GL_CheckExtension( "GL_ARB_shading_language_100", NULL, "gl_glslprogram", GL_SHADER_GLSL100_EXT ); GL_CheckExtension( "GL_ARB_vertex_shader", vertexshaderfuncs, "gl_vertexshader", GL_VERTEX_SHADER_EXT ); GL_CheckExtension( "GL_ARB_fragment_shader", NULL, "gl_pixelshader", GL_FRAGMENT_SHADER_EXT ); GL_CheckExtension( "GL_ARB_depth_texture", NULL, "gl_depthtexture", GL_DEPTH_TEXTURE ); GL_CheckExtension( "GL_ARB_shadow", NULL, "gl_arb_shadow", GL_SHADOW_EXT ); GL_CheckExtension( "GL_ARB_texture_float", NULL, "gl_arb_texture_float", GL_ARB_TEXTURE_FLOAT_EXT ); GL_CheckExtension( "GL_ARB_depth_buffer_float", NULL, "gl_arb_depth_float", GL_ARB_DEPTH_FLOAT_EXT ); // occlusion queries GL_CheckExtension( "GL_ARB_occlusion_query", occlusionfunc, "gl_occlusion_queries", GL_OCCLUSION_QUERIES_EXT ); if( GL_Support( GL_SHADER_GLSL100_EXT )) { pglGetIntegerv( GL_MAX_TEXTURE_COORDS_ARB, &glConfig.max_texture_coords ); pglGetIntegerv( GL_MAX_TEXTURE_IMAGE_UNITS_ARB, &glConfig.max_teximage_units ); } else { // just get from multitexturing glConfig.max_texture_coords = glConfig.max_teximage_units = glConfig.max_texture_units; } // rectangle textures support if( Q_strstr( glConfig.extensions_string, "GL_NV_texture_rectangle" )) { glConfig.texRectangle = GL_TEXTURE_RECTANGLE_NV; pglGetIntegerv( GL_MAX_RECTANGLE_TEXTURE_SIZE_NV, &glConfig.max_2d_rectangle_size ); } #ifndef __ANDROID__ else if( Q_strstr( glConfig.extensions_string, "GL_EXT_texture_rectangle" )) { glConfig.texRectangle = GL_TEXTURE_RECTANGLE_EXT; pglGetIntegerv( GL_MAX_RECTANGLE_TEXTURE_SIZE_EXT, &glConfig.max_2d_rectangle_size ); } #endif else glConfig.texRectangle = glConfig.max_2d_rectangle_size = 0; // no rectangle glConfig.max_2d_texture_size = 0; pglGetIntegerv( GL_MAX_TEXTURE_SIZE, &glConfig.max_2d_texture_size ); if( glConfig.max_2d_texture_size <= 0 ) glConfig.max_2d_texture_size = 256; Cvar_Get( "gl_max_texture_size", "0", CVAR_INIT, "opengl texture max dims" ); Cvar_Set( "gl_max_texture_size", va( "%i", glConfig.max_2d_texture_size )); pglGetIntegerv( GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB, &glConfig.max_vertex_uniforms ); pglGetIntegerv( GL_MAX_VERTEX_ATTRIBS_ARB, &glConfig.max_vertex_attribs ); // MCD has buffering issues if(Q_strstr( glConfig.renderer_string, "gdi" )) Cvar_SetFloat( "gl_finish", 1 ); Cvar_Set( "gl_anisotropy", va( "%f", bound( 0, gl_texture_anisotropy->value, glConfig.max_texture_anisotropy ))); // software mipmap generator does wrong result with NPOT textures ... if( !GL_Support( GL_SGIS_MIPMAPS_EXT )) GL_SetExtension( GL_ARB_TEXTURE_NPOT_EXT, false ); if( GL_Support( GL_TEXTURE_COMPRESSION_EXT )) Image_AddCmdFlags( IL_DDS_HARDWARE ); glw_state.initialized = true; tr.framecount = tr.visframecount = 1; }
void GL_InitExtensions( void ) { // initialize gl extensions GL_CheckExtension( "OpenGL 1.1.0", opengl_110funcs, NULL, GL_OPENGL_110 ); // get our various GL strings glConfig.vendor_string = pglGetString( GL_VENDOR ); glConfig.renderer_string = pglGetString( GL_RENDERER ); glConfig.version_string = pglGetString( GL_VERSION ); glConfig.extensions_string = pglGetString( GL_EXTENSIONS ); MsgDev( D_INFO, "Video: %s\n", glConfig.renderer_string ); // initalize until base opengl functions loaded GL_SetExtension( GL_DRAW_RANGEELEMENTS_EXT, false ); GL_SetExtension( GL_ARB_MULTITEXTURE, false ); GL_SetExtension( GL_ENV_COMBINE_EXT, false ); GL_SetExtension( GL_DOT3_ARB_EXT, false ); GL_SetExtension( GL_TEXTURE_3D_EXT, false ); GL_SetExtension( GL_SGIS_MIPMAPS_EXT, true ); // gles specs // hardware cubemaps GL_CheckExtension( "GL_OES_texture_cube_map", NULL, "gl_texture_cubemap", GL_TEXTURECUBEMAP_EXT ); if( GL_Support( GL_TEXTURECUBEMAP_EXT )) { pglGetIntegerv( GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, &glConfig.max_cubemap_size ); } GL_SetExtension( GL_ARB_SEAMLESS_CUBEMAP, false ); GL_SetExtension( GL_EXT_POINTPARAMETERS, false ); GL_CheckExtension( "GL_OES_texture_npot", NULL, "gl_texture_npot", GL_ARB_TEXTURE_NPOT_EXT ); GL_SetExtension( GL_TEXTURE_COMPRESSION_EXT, false ); GL_SetExtension( GL_CUSTOM_VERTEX_ARRAY_EXT, false ); GL_SetExtension( GL_CLAMPTOEDGE_EXT, true ); // by gles1 specs GL_SetExtension( GL_ANISOTROPY_EXT, false ); GL_SetExtension( GL_TEXTURE_LODBIAS, false ); GL_SetExtension( GL_CLAMP_TEXBORDER_EXT, false ); GL_SetExtension( GL_BLEND_MINMAX_EXT, false ); GL_SetExtension( GL_BLEND_SUBTRACT_EXT, false ); GL_SetExtension( GL_SEPARATESTENCIL_EXT, false ); GL_SetExtension( GL_STENCILTWOSIDE_EXT, false ); GL_SetExtension( GL_ARB_VERTEX_BUFFER_OBJECT_EXT, false ); GL_SetExtension( GL_TEXTURE_ENV_ADD_EXT,false ); GL_SetExtension( GL_SHADER_OBJECTS_EXT, false ); GL_SetExtension( GL_SHADER_GLSL100_EXT, false ); GL_SetExtension( GL_VERTEX_SHADER_EXT,false ); GL_SetExtension( GL_FRAGMENT_SHADER_EXT, false ); GL_SetExtension( GL_SHADOW_EXT, false ); GL_SetExtension( GL_ARB_DEPTH_FLOAT_EXT, false ); GL_SetExtension( GL_OCCLUSION_QUERIES_EXT,false ); GL_CheckExtension( "GL_OES_depth_texture", NULL, "gl_depthtexture", GL_DEPTH_TEXTURE ); glConfig.texRectangle = glConfig.max_2d_rectangle_size = 0; // no rectangle glConfig.max_2d_texture_size = 0; pglGetIntegerv( GL_MAX_TEXTURE_SIZE, &glConfig.max_2d_texture_size ); if( glConfig.max_2d_texture_size <= 0 ) glConfig.max_2d_texture_size = 256; Cvar_Get( "gl_max_texture_size", "0", CVAR_INIT, "opengl texture max dims" ); Cvar_Set( "gl_max_texture_size", va( "%i", glConfig.max_2d_texture_size )); pglGetIntegerv( GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB, &glConfig.max_vertex_uniforms ); pglGetIntegerv( GL_MAX_VERTEX_ATTRIBS_ARB, &glConfig.max_vertex_attribs ); // MCD has buffering issues if(Q_strstr( glConfig.renderer_string, "gdi" )) Cvar_SetFloat( "gl_finish", 1 ); Cvar_Set( "gl_anisotropy", va( "%f", bound( 0, gl_texture_anisotropy->value, glConfig.max_texture_anisotropy ))); // software mipmap generator does wrong result with NPOT textures ... if( !GL_Support( GL_SGIS_MIPMAPS_EXT )) GL_SetExtension( GL_ARB_TEXTURE_NPOT_EXT, false ); if( GL_Support( GL_TEXTURE_COMPRESSION_EXT )) Image_AddCmdFlags( IL_DDS_HARDWARE ); glw_state.initialized = true; tr.framecount = tr.visframecount = 1; }