2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 #include "extensions.h"
36 * Examine enabled GL extensions to determine GL version.
37 * \return version string
40 compute_version(const GLcontext
*ctx
)
42 static const char *version_1_2
= "1.2 Mesa " MESA_VERSION_STRING
;
43 static const char *version_1_3
= "1.3 Mesa " MESA_VERSION_STRING
;
44 static const char *version_1_4
= "1.4 Mesa " MESA_VERSION_STRING
;
45 static const char *version_1_5
= "1.5 Mesa " MESA_VERSION_STRING
;
46 static const char *version_2_0
= "2.0 Mesa " MESA_VERSION_STRING
;
47 static const char *version_2_1
= "2.1 Mesa " MESA_VERSION_STRING
;
49 const GLboolean ver_1_3
= (ctx
->Extensions
.ARB_multisample
&&
50 ctx
->Extensions
.ARB_multitexture
&&
51 ctx
->Extensions
.ARB_texture_border_clamp
&&
52 ctx
->Extensions
.ARB_texture_compression
&&
53 ctx
->Extensions
.ARB_texture_cube_map
&&
54 ctx
->Extensions
.EXT_texture_env_add
&&
55 ctx
->Extensions
.ARB_texture_env_combine
&&
56 ctx
->Extensions
.ARB_texture_env_dot3
);
57 const GLboolean ver_1_4
= (ver_1_3
&&
58 ctx
->Extensions
.ARB_depth_texture
&&
59 ctx
->Extensions
.ARB_shadow
&&
60 ctx
->Extensions
.ARB_texture_env_crossbar
&&
61 ctx
->Extensions
.ARB_texture_mirrored_repeat
&&
62 ctx
->Extensions
.ARB_window_pos
&&
63 ctx
->Extensions
.EXT_blend_color
&&
64 ctx
->Extensions
.EXT_blend_func_separate
&&
65 ctx
->Extensions
.EXT_blend_minmax
&&
66 ctx
->Extensions
.EXT_blend_subtract
&&
67 ctx
->Extensions
.EXT_fog_coord
&&
68 ctx
->Extensions
.EXT_multi_draw_arrays
&&
69 ctx
->Extensions
.EXT_point_parameters
&&
70 ctx
->Extensions
.EXT_secondary_color
&&
71 ctx
->Extensions
.EXT_stencil_wrap
&&
72 ctx
->Extensions
.EXT_texture_lod_bias
&&
73 ctx
->Extensions
.SGIS_generate_mipmap
);
74 const GLboolean ver_1_5
= (ver_1_4
&&
75 ctx
->Extensions
.ARB_occlusion_query
&&
76 ctx
->Extensions
.ARB_vertex_buffer_object
&&
77 ctx
->Extensions
.EXT_shadow_funcs
);
78 const GLboolean ver_2_0
= (ver_1_5
&&
79 ctx
->Extensions
.ARB_draw_buffers
&&
80 ctx
->Extensions
.ARB_point_sprite
&&
81 ctx
->Extensions
.ARB_shader_objects
&&
82 ctx
->Extensions
.ARB_vertex_shader
&&
83 ctx
->Extensions
.ARB_fragment_shader
&&
84 ctx
->Extensions
.ARB_texture_non_power_of_two
&&
85 ctx
->Extensions
.EXT_blend_equation_separate
&&
87 /* Technically, 2.0 requires the functionality
88 * of the EXT version. Enable 2.0 if either
89 * extension is available, and assume that a
90 * driver that only exposes the ATI extension
91 * will fallback to software when necessary.
93 (ctx
->Extensions
.EXT_stencil_two_side
94 || ctx
->Extensions
.ATI_separate_stencil
));
95 const GLboolean ver_2_1
= (ver_2_0
&&
96 ctx
->Extensions
.ARB_shading_language_120
&&
97 ctx
->Extensions
.EXT_pixel_buffer_object
&&
98 ctx
->Extensions
.EXT_texture_sRGB
);
115 * Query string-valued state. The return value should _not_ be freed by
118 * \param name the state variable to query.
122 * Tries to get the string from dd_function_table::GetString, otherwise returns
123 * the hardcoded strings.
125 const GLubyte
* GLAPIENTRY
126 _mesa_GetString( GLenum name
)
128 GET_CURRENT_CONTEXT(ctx
);
129 static const char *vendor
= "Brian Paul";
130 static const char *renderer
= "Mesa";
135 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
137 /* this is a required driver function */
138 assert(ctx
->Driver
.GetString
);
140 /* Give the driver the chance to handle this query */
141 const GLubyte
*str
= (*ctx
->Driver
.GetString
)(ctx
, name
);
148 return (const GLubyte
*) vendor
;
150 return (const GLubyte
*) renderer
;
152 return (const GLubyte
*) compute_version(ctx
);
154 if (!ctx
->Extensions
.String
)
155 ctx
->Extensions
.String
= _mesa_make_extension_string(ctx
);
156 return (const GLubyte
*) ctx
->Extensions
.String
;
157 #if FEATURE_ARB_shading_language_100
158 case GL_SHADING_LANGUAGE_VERSION_ARB
:
159 if (ctx
->Extensions
.ARB_shading_language_120
)
160 return (const GLubyte
*) "1.20";
161 else if (ctx
->Extensions
.ARB_shading_language_100
)
162 return (const GLubyte
*) "1.10";
165 #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program || \
166 FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
167 case GL_PROGRAM_ERROR_STRING_NV
:
168 if (ctx
->Extensions
.NV_fragment_program
||
169 ctx
->Extensions
.ARB_fragment_program
||
170 ctx
->Extensions
.NV_vertex_program
||
171 ctx
->Extensions
.ARB_vertex_program
) {
172 return (const GLubyte
*) ctx
->Program
.ErrorString
;
176 #if FEATURE_ARB_shading_language_100
180 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetString" );
181 return (const GLubyte
*) 0;
187 * Return pointer-valued state, such as a vertex array pointer.
189 * \param pname names state to be queried
190 * \param params returns the pointer value
192 * \sa glGetPointerv().
194 * Tries to get the specified pointer via dd_function_table::GetPointerv,
195 * otherwise gets the specified pointer from the current context.
198 _mesa_GetPointerv( GLenum pname
, GLvoid
**params
)
200 GET_CURRENT_CONTEXT(ctx
);
201 const GLuint clientUnit
= ctx
->Array
.ActiveTexture
;
202 ASSERT_OUTSIDE_BEGIN_END(ctx
);
207 if (MESA_VERBOSE
& VERBOSE_API
)
208 _mesa_debug(ctx
, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname
));
210 if (ctx
->Driver
.GetPointerv
211 && (*ctx
->Driver
.GetPointerv
)(ctx
, pname
, params
))
215 case GL_VERTEX_ARRAY_POINTER
:
216 *params
= (GLvoid
*) ctx
->Array
.ArrayObj
->Vertex
.Ptr
;
218 case GL_NORMAL_ARRAY_POINTER
:
219 *params
= (GLvoid
*) ctx
->Array
.ArrayObj
->Normal
.Ptr
;
221 case GL_COLOR_ARRAY_POINTER
:
222 *params
= (GLvoid
*) ctx
->Array
.ArrayObj
->Color
.Ptr
;
224 case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT
:
225 *params
= (GLvoid
*) ctx
->Array
.ArrayObj
->SecondaryColor
.Ptr
;
227 case GL_FOG_COORDINATE_ARRAY_POINTER_EXT
:
228 *params
= (GLvoid
*) ctx
->Array
.ArrayObj
->FogCoord
.Ptr
;
230 case GL_INDEX_ARRAY_POINTER
:
231 *params
= (GLvoid
*) ctx
->Array
.ArrayObj
->Index
.Ptr
;
233 case GL_TEXTURE_COORD_ARRAY_POINTER
:
234 *params
= (GLvoid
*) ctx
->Array
.ArrayObj
->TexCoord
[clientUnit
].Ptr
;
236 case GL_EDGE_FLAG_ARRAY_POINTER
:
237 *params
= (GLvoid
*) ctx
->Array
.ArrayObj
->EdgeFlag
.Ptr
;
239 case GL_FEEDBACK_BUFFER_POINTER
:
240 *params
= ctx
->Feedback
.Buffer
;
242 case GL_SELECTION_BUFFER_POINTER
:
243 *params
= ctx
->Select
.Buffer
;
246 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetPointerv" );
253 * Returns the current GL error code, or GL_NO_ERROR.
254 * \return current error code
256 * Returns __GLcontextRec::ErrorValue.
259 _mesa_GetError( void )
261 GET_CURRENT_CONTEXT(ctx
);
262 GLenum e
= ctx
->ErrorValue
;
263 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
265 if (MESA_VERBOSE
& VERBOSE_API
)
266 _mesa_debug(ctx
, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e
));
268 ctx
->ErrorValue
= (GLenum
) GL_NO_ERROR
;
269 ctx
->ErrorDebugCount
= 0;