/* * Mesa 3-D graphics library * * 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 * THE AUTHORS OR COPYRIGHT HOLDERS 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 <stdbool.h> #include "glheader.h" #include "context.h" #include "get.h" #include "enums.h" #include "extensions.h" #include "mtypes.h" /** * Return the string for a glGetString(GL_SHADING_LANGUAGE_VERSION) query. */ static const GLubyte * shading_language_version(struct gl_context *ctx) { switch (ctx->API) { case API_OPENGL_COMPAT: case API_OPENGL_CORE: switch (ctx->Const.GLSLVersion) { case 120: return (const GLubyte *) "1.20"; case 130: return (const GLubyte *) "1.30"; case 140: return (const GLubyte *) "1.40"; case 150: return (const GLubyte *) "1.50"; case 330: return (const GLubyte *) "3.30"; case 400: return (const GLubyte *) "4.00"; case 410: return (const GLubyte *) "4.10"; case 420: return (const GLubyte *) "4.20"; default: _mesa_problem(ctx, "Invalid GLSL version in shading_language_version()"); return (const GLubyte *) 0; } break; case API_OPENGLES2: return (ctx->Version < 30) ? (const GLubyte *) "OpenGL ES GLSL ES 1.0.16" : (const GLubyte *) "OpenGL ES GLSL ES 3.0"; case API_OPENGLES: /* fall-through */ default: _mesa_problem(ctx, "Unexpected API value in shading_language_version()"); 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->API == API_OPENGL_CORE) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetString(GL_EXTENSIONS)"); return (const GLubyte *) 0; } return (const GLubyte *) ctx->Extensions.String; case GL_SHADING_LANGUAGE_VERSION: if (ctx->API == API_OPENGLES) break; return shading_language_version(ctx); case GL_PROGRAM_ERROR_STRING_ARB: if (ctx->API == API_OPENGL_COMPAT && (ctx->Extensions.ARB_fragment_program || ctx->Extensions.ARB_vertex_program)) { return (const GLubyte *) ctx->Program.ErrorString; } break; default: break; } _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; 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: if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_POS].Ptr; break; case GL_NORMAL_ARRAY_POINTER: if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_NORMAL].Ptr; break; case GL_COLOR_ARRAY_POINTER: if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR0].Ptr; break; case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT: if (ctx->API != API_OPENGL_COMPAT) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR1].Ptr; break; case GL_FOG_COORDINATE_ARRAY_POINTER_EXT: if (ctx->API != API_OPENGL_COMPAT) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_FOG].Ptr; break; case GL_INDEX_ARRAY_POINTER: if (ctx->API != API_OPENGL_COMPAT) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Ptr; break; case GL_TEXTURE_COORD_ARRAY_POINTER: if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_TEX(clientUnit)].Ptr; break; case GL_EDGE_FLAG_ARRAY_POINTER: if (ctx->API != API_OPENGL_COMPAT) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Ptr; break; case GL_FEEDBACK_BUFFER_POINTER: if (ctx->API != API_OPENGL_COMPAT) goto invalid_pname; *params = ctx->Feedback.Buffer; break; case GL_SELECTION_BUFFER_POINTER: if (ctx->API != API_OPENGL_COMPAT) goto invalid_pname; *params = ctx->Select.Buffer; break; case GL_POINT_SIZE_ARRAY_POINTER_OES: if (ctx->API != API_OPENGLES) goto invalid_pname; *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Ptr; break; case GL_DEBUG_CALLBACK_FUNCTION_ARB: if (!_mesa_is_desktop_gl(ctx)) { goto invalid_pname; } else { struct gl_debug_state *debug = _mesa_get_debug_state(ctx); *params = debug ? (void *) debug->Callback : NULL; } break; case GL_DEBUG_CALLBACK_USER_PARAM_ARB: if (!_mesa_is_desktop_gl(ctx)) { goto invalid_pname; } else { struct gl_debug_state *debug = _mesa_get_debug_state(ctx); *params = debug ? (void *) debug->CallbackData : NULL; } break; default: goto invalid_pname; } return; invalid_pname: _mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerv" ); return; } /** * Returns the current GL error code, or GL_NO_ERROR. * \return current error code * * Returns __struct gl_contextRec::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; } /** * Returns an error code specified by GL_ARB_robustness, or GL_NO_ERROR. * \return current context status */ GLenum GLAPIENTRY _mesa_GetGraphicsResetStatusARB( void ) { GET_CURRENT_CONTEXT(ctx); GLenum status = GL_NO_ERROR; /* The ARB_robustness specification says: * * "If the reset notification behavior is NO_RESET_NOTIFICATION_ARB, * then the implementation will never deliver notification of reset * events, and GetGraphicsResetStatusARB will always return NO_ERROR." */ if (ctx->Const.ResetStrategy == GL_NO_RESET_NOTIFICATION_ARB) { if (MESA_VERBOSE & VERBOSE_API) _mesa_debug(ctx, "glGetGraphicsResetStatusARB always returns GL_NO_ERROR " "because reset notifictation was not requested at context " "creation.\n"); return GL_NO_ERROR; } if (ctx->Driver.GetGraphicsResetStatus) { /* Query the reset status of this context from the driver core. */ status = ctx->Driver.GetGraphicsResetStatus(ctx); mtx_lock(&ctx->Shared->Mutex); /* If this context has not been affected by a GPU reset, check to see if * some other context in the share group has been affected by a reset. * If another context saw a reset but this context did not, assume that * this context was not guilty. */ if (status != GL_NO_ERROR) { ctx->Shared->ShareGroupReset = true; } else if (ctx->Shared->ShareGroupReset && !ctx->ShareGroupReset) { status = GL_INNOCENT_CONTEXT_RESET_ARB; } ctx->ShareGroupReset = ctx->Shared->ShareGroupReset; mtx_unlock(&ctx->Shared->Mutex); } if (!ctx->Driver.GetGraphicsResetStatus && (MESA_VERBOSE & VERBOSE_API)) _mesa_debug(ctx, "glGetGraphicsResetStatusARB always returns GL_NO_ERROR " "because the driver doesn't track reset status.\n"); return status; }