/* * Mesa 3-D graphics library * Version: 7.1 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "glheader.h" #include "context.h" #include "get.h" #include "version.h" #include "enums.h" #include "extensions.h" /** * Examine enabled GL extensions to determine GL version. * \return version string */ static const char * compute_version(const GLcontext *ctx) { static const char *version_1_2 = "1.2 Mesa " MESA_VERSION_STRING; static const char *version_1_3 = "1.3 Mesa " MESA_VERSION_STRING; static const char *version_1_4 = "1.4 Mesa " MESA_VERSION_STRING; static const char *version_1_5 = "1.5 Mesa " MESA_VERSION_STRING; static const char *version_2_0 = "2.0 Mesa " MESA_VERSION_STRING; static const char *version_2_1 = "2.1 Mesa " MESA_VERSION_STRING; const GLboolean ver_1_3 = (ctx->Extensions.ARB_multisample && ctx->Extensions.ARB_multitexture && ctx->Extensions.ARB_texture_border_clamp && ctx->Extensions.ARB_texture_compression && ctx->Extensions.ARB_texture_cube_map && ctx->Extensions.EXT_texture_env_add && ctx->Extensions.ARB_texture_env_combine && ctx->Extensions.ARB_texture_env_dot3); const GLboolean ver_1_4 = (ver_1_3 && ctx->Extensions.ARB_depth_texture && ctx->Extensions.ARB_shadow && ctx->Extensions.ARB_texture_env_crossbar && ctx->Extensions.ARB_texture_mirrored_repeat && ctx->Extensions.ARB_window_pos && ctx->Extensions.EXT_blend_color && ctx->Extensions.EXT_blend_func_separate && ctx->Extensions.EXT_blend_minmax && ctx->Extensions.EXT_blend_subtract && ctx->Extensions.EXT_fog_coord && ctx->Extensions.EXT_multi_draw_arrays && ctx->Extensions.EXT_point_parameters && ctx->Extensions.EXT_secondary_color && ctx->Extensions.EXT_stencil_wrap && ctx->Extensions.EXT_texture_lod_bias && ctx->Extensions.SGIS_generate_mipmap); const GLboolean ver_1_5 = (ver_1_4 && ctx->Extensions.ARB_occlusion_query && ctx->Extensions.ARB_vertex_buffer_object && ctx->Extensions.EXT_shadow_funcs); const GLboolean ver_2_0 = (ver_1_5 && ctx->Extensions.ARB_draw_buffers && ctx->Extensions.ARB_point_sprite && ctx->Extensions.ARB_shader_objects && ctx->Extensions.ARB_vertex_shader && ctx->Extensions.ARB_fragment_shader && ctx->Extensions.ARB_texture_non_power_of_two && ctx->Extensions.EXT_blend_equation_separate && /* Technically, 2.0 requires the functionality * of the EXT version. Enable 2.0 if either * extension is available, and assume that a * driver that only exposes the ATI extension * will fallback to software when necessary. */ (ctx->Extensions.EXT_stencil_two_side || ctx->Extensions.ATI_separate_stencil)); const GLboolean ver_2_1 = (ver_2_0 && ctx->Extensions.ARB_shading_language_120 && ctx->Extensions.EXT_pixel_buffer_object && ctx->Extensions.EXT_texture_sRGB); if (ver_2_1) return version_2_1; if (ver_2_0) return version_2_0; if (ver_1_5) return version_1_5; if (ver_1_4) return version_1_4; if (ver_1_3) return version_1_3; return version_1_2; } /** * Query string-valued state. The return value should _not_ be freed by * the caller. * * \param name the state variable to query. * * \sa glGetString(). * * Tries to get the string from dd_function_table::GetString, otherwise returns * the hardcoded strings. */ const GLubyte * GLAPIENTRY _mesa_GetString( GLenum name ) { GET_CURRENT_CONTEXT(ctx); static const char *vendor = "Brian Paul"; static const char *renderer = "Mesa"; if (!ctx) return NULL; ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL); /* this is a required driver function */ assert(ctx->Driver.GetString); { /* Give the driver the chance to handle this query */ const GLubyte *str = (*ctx->Driver.GetString)(ctx, name); if (str) return str; } switch (name) { case GL_VENDOR: return (const GLubyte *) vendor; case GL_RENDERER: return (const GLubyte *) renderer; case GL_VERSION: return (const GLubyte *) compute_version(ctx); case GL_EXTENSIONS: if (!ctx->Extensions.String) ctx->Extensions.String = _mesa_make_extension_string(ctx); return (const GLubyte *) ctx->Extensions.String; #if FEATURE_ARB_shading_language_100 case GL_SHADING_LANGUAGE_VERSION_ARB: if (ctx->Extensions.ARB_shading_language_120) return (const GLubyte *) "1.20"; else if (ctx->Extensions.ARB_shading_language_100) return (const GLubyte *) "1.10"; goto error; #endif #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program || \ FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program case GL_PROGRAM_ERROR_STRING_NV: if (ctx->Extensions.NV_fragment_program || ctx->Extensions.ARB_fragment_program || ctx->Extensions.NV_vertex_program || ctx->Extensions.ARB_vertex_program) { return (const GLubyte *) ctx->Program.ErrorString; } /* FALL-THROUGH */ #endif #if FEATURE_ARB_shading_language_100 error: #endif default: _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" ); return (const GLubyte *) 0; } } /** * Return pointer-valued state, such as a vertex array pointer. * * \param pname names state to be queried * \param params returns the pointer value * * \sa glGetPointerv(). * * Tries to get the specified pointer via dd_function_table::GetPointerv, * otherwise gets the specified pointer from the current context. */ void GLAPIENTRY _mesa_GetPointerv( GLenum pname, GLvoid **params ) { GET_CURRENT_CONTEXT(ctx); const GLuint clientUnit = ctx->Array.ActiveTexture; ASSERT_OUTSIDE_BEGIN_END(ctx); if (!params) return; if (MESA_VERBOSE & VERBOSE_API) _mesa_debug(ctx, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname)); if (ctx->Driver.GetPointerv && (*ctx->Driver.GetPointerv)(ctx, pname, params)) return; switch (pname) { case GL_VERTEX_ARRAY_POINTER: *params = (GLvoid *) ctx->Array.ArrayObj->Vertex.Ptr; break; case GL_NORMAL_ARRAY_POINTER: *params = (GLvoid *) ctx->Array.ArrayObj->Normal.Ptr; break; case GL_COLOR_ARRAY_POINTER: *params = (GLvoid *) ctx->Array.ArrayObj->Color.Ptr; break; case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT: *params = (GLvoid *) ctx->Array.ArrayObj->SecondaryColor.Ptr; break; case GL_FOG_COORDINATE_ARRAY_POINTER_EXT: *params = (GLvoid *) ctx->Array.ArrayObj->FogCoord.Ptr; break; case GL_INDEX_ARRAY_POINTER: *params = (GLvoid *) ctx->Array.ArrayObj->Index.Ptr; break; case GL_TEXTURE_COORD_ARRAY_POINTER: *params = (GLvoid *) ctx->Array.ArrayObj->TexCoord[clientUnit].Ptr; break; case GL_EDGE_FLAG_ARRAY_POINTER: *params = (GLvoid *) ctx->Array.ArrayObj->EdgeFlag.Ptr; break; case GL_FEEDBACK_BUFFER_POINTER: *params = ctx->Feedback.Buffer; break; case GL_SELECTION_BUFFER_POINTER: *params = ctx->Select.Buffer; break; default: _mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerv" ); return; } } /** * Returns the current GL error code, or GL_NO_ERROR. * \return current error code * * Returns __GLcontextRec::ErrorValue. */ GLenum GLAPIENTRY _mesa_GetError( void ) { GET_CURRENT_CONTEXT(ctx); GLenum e = ctx->ErrorValue; ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); if (MESA_VERBOSE & VERBOSE_API) _mesa_debug(ctx, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e)); ctx->ErrorValue = (GLenum) GL_NO_ERROR; ctx->ErrorDebugCount = 0; return e; }