| |
| /* |
| * Mesa 3-D graphics library |
| * Version: 4.1 |
| * |
| * Copyright (C) 1999-2002 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 "enums.h" |
| #include "context.h" |
| #include "hint.h" |
| #include "imports.h" |
| |
| |
| |
| void GLAPIENTRY |
| _mesa_Hint( GLenum target, GLenum mode ) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| if (MESA_VERBOSE & VERBOSE_API) |
| _mesa_debug(ctx, "glHint %s %d\n", |
| _mesa_lookup_enum_by_nr(target), mode); |
| |
| if (mode != GL_NICEST && mode != GL_FASTEST && mode != GL_DONT_CARE) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glHint(mode)"); |
| return; |
| } |
| |
| switch (target) { |
| case GL_FOG_HINT: |
| if (ctx->Hint.Fog == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.Fog = mode; |
| break; |
| case GL_LINE_SMOOTH_HINT: |
| if (ctx->Hint.LineSmooth == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.LineSmooth = mode; |
| break; |
| case GL_PERSPECTIVE_CORRECTION_HINT: |
| if (ctx->Hint.PerspectiveCorrection == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.PerspectiveCorrection = mode; |
| break; |
| case GL_POINT_SMOOTH_HINT: |
| if (ctx->Hint.PointSmooth == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.PointSmooth = mode; |
| break; |
| case GL_POLYGON_SMOOTH_HINT: |
| if (ctx->Hint.PolygonSmooth == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.PolygonSmooth = mode; |
| break; |
| |
| /* GL_EXT_clip_volume_hint */ |
| case GL_CLIP_VOLUME_CLIPPING_HINT_EXT: |
| if (ctx->Hint.ClipVolumeClipping == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.ClipVolumeClipping = mode; |
| break; |
| |
| /* GL_ARB_texture_compression */ |
| case GL_TEXTURE_COMPRESSION_HINT_ARB: |
| if (!ctx->Extensions.ARB_texture_compression) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)"); |
| return; |
| } |
| if (ctx->Hint.TextureCompression == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.TextureCompression = mode; |
| break; |
| |
| /* GL_SGIS_generate_mipmap */ |
| case GL_GENERATE_MIPMAP_HINT_SGIS: |
| if (!ctx->Extensions.SGIS_generate_mipmap) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)"); |
| return; |
| } |
| if (ctx->Hint.GenerateMipmap == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.GenerateMipmap = mode; |
| break; |
| |
| /* GL_ARB_fragment_shader */ |
| case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB: |
| if (!ctx->Extensions.ARB_fragment_shader) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)"); |
| return; |
| } |
| if (ctx->Hint.FragmentShaderDerivative == mode) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_HINT); |
| ctx->Hint.FragmentShaderDerivative = mode; |
| break; |
| |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)"); |
| return; |
| } |
| |
| if (ctx->Driver.Hint) { |
| (*ctx->Driver.Hint)( ctx, target, mode ); |
| } |
| } |
| |
| |
| /**********************************************************************/ |
| /***** Initialization *****/ |
| /**********************************************************************/ |
| |
| void _mesa_init_hint( GLcontext * ctx ) |
| { |
| /* Hint group */ |
| ctx->Hint.PerspectiveCorrection = GL_DONT_CARE; |
| ctx->Hint.PointSmooth = GL_DONT_CARE; |
| ctx->Hint.LineSmooth = GL_DONT_CARE; |
| ctx->Hint.PolygonSmooth = GL_DONT_CARE; |
| ctx->Hint.Fog = GL_DONT_CARE; |
| ctx->Hint.ClipVolumeClipping = GL_DONT_CARE; |
| ctx->Hint.TextureCompression = GL_DONT_CARE; |
| ctx->Hint.GenerateMipmap = GL_DONT_CARE; |
| ctx->Hint.FragmentShaderDerivative = GL_DONT_CARE; |
| } |