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Diffstat (limited to 'mesalib/src/mesa/main/getstring.c')
-rw-r--r--mesalib/src/mesa/main/getstring.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/getstring.c b/mesalib/src/mesa/main/getstring.c
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+++ b/mesalib/src/mesa/main/getstring.c
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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"
+
+
+/**
+ * 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;
+}
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