diff options
Diffstat (limited to 'mesalib/src/mesa/main/getstring.c')
-rw-r--r-- | mesalib/src/mesa/main/getstring.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/getstring.c b/mesalib/src/mesa/main/getstring.c new file mode 100644 index 000000000..6599ed969 --- /dev/null +++ b/mesalib/src/mesa/main/getstring.c @@ -0,0 +1,271 @@ +/* + * 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; +} |