diff options
Diffstat (limited to 'src/mesa/main/getstring.c')
| -rw-r--r-- | src/mesa/main/getstring.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/src/mesa/main/getstring.c b/src/mesa/main/getstring.c new file mode 100644 index 0000000000..54db5794bf --- /dev/null +++ b/src/mesa/main/getstring.c @@ -0,0 +1,237 @@ +/* + * 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 "enums.h" +#include "extensions.h" + +static const GLubyte * +shading_laguage_version(GLcontext *ctx) +{ + switch (ctx->API) { +#if FEATURE_ARB_shading_language_100 + case API_OPENGL: + 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 + + case API_OPENGLES2: + return (const GLubyte *) "OpenGL ES GLSL ES 1.0.16"; + + case API_OPENGLES: + default: + error: + _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" ); + return (const GLubyte *) 0; + } +} + + +/** + * 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 || FEATURE_ES2 + case GL_SHADING_LANGUAGE_VERSION: + return shading_laguage_version(ctx); +#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 + 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)); + + 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; +#if FEATURE_point_size_array + case GL_POINT_SIZE_ARRAY_POINTER_OES: + *params = (GLvoid *) ctx->Array.ArrayObj->PointSize.Ptr; + break; +#endif + 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; +} |