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/*
* 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"
/**
* 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 *) ctx->VersionString;
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;
}
}
/**
* GL3
*/
const GLubyte * GLAPIENTRY
_mesa_GetStringi(GLenum name, GLuint index)
{
GET_CURRENT_CONTEXT(ctx);
if (!ctx)
return NULL;
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
switch (name) {
case GL_EXTENSIONS:
if (index >= _mesa_get_extension_count(ctx)) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGetStringi(index=%u)", index);
return (const GLubyte *) 0;
}
return _mesa_get_enabled_extension(ctx, index);
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;
}
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