ad5c0d9efa
Return the minimum GLX version supported by all screens. Assume that DRI2 screens have all the required features for GLX 1.4. Assume that everyone else can only support GLX 1.2. Reviewed-by: Kristian Høgsberg <krh@redhat.com> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
514 lines
15 KiB
C
514 lines
15 KiB
C
/*
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* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice including the dates of first publication and
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* either this permission notice or a reference to
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* http://oss.sgi.com/projects/FreeB/
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* shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of Silicon Graphics, Inc.
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* shall not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization from
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* Silicon Graphics, Inc.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <GL/glxtokens.h>
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#include <string.h>
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#include <windowstr.h>
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#include <os.h>
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#include <colormapst.h>
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#include "privates.h"
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#include "glxserver.h"
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#include "glxutil.h"
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#include "glxext.h"
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static int glxScreenPrivateKeyIndex;
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static DevPrivateKey glxScreenPrivateKey = &glxScreenPrivateKeyIndex;
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const char GLServerVersion[] = "1.4";
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static const char GLServerExtensions[] =
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"GL_ARB_depth_texture "
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"GL_ARB_draw_buffers "
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"GL_ARB_fragment_program "
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"GL_ARB_fragment_program_shadow "
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"GL_ARB_imaging "
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"GL_ARB_multisample "
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"GL_ARB_multitexture "
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"GL_ARB_occlusion_query "
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"GL_ARB_point_parameters "
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"GL_ARB_point_sprite "
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"GL_ARB_shadow "
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"GL_ARB_shadow_ambient "
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"GL_ARB_texture_border_clamp "
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"GL_ARB_texture_compression "
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"GL_ARB_texture_cube_map "
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"GL_ARB_texture_env_add "
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"GL_ARB_texture_env_combine "
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"GL_ARB_texture_env_crossbar "
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"GL_ARB_texture_env_dot3 "
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"GL_ARB_texture_mirrored_repeat "
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"GL_ARB_texture_non_power_of_two "
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"GL_ARB_transpose_matrix "
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"GL_ARB_vertex_program "
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"GL_ARB_window_pos "
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"GL_EXT_abgr "
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"GL_EXT_bgra "
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"GL_EXT_blend_color "
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"GL_EXT_blend_equation_separate "
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"GL_EXT_blend_func_separate "
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"GL_EXT_blend_logic_op "
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"GL_EXT_blend_minmax "
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"GL_EXT_blend_subtract "
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"GL_EXT_clip_volume_hint "
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"GL_EXT_copy_texture "
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"GL_EXT_draw_range_elements "
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"GL_EXT_fog_coord "
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"GL_EXT_framebuffer_object "
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"GL_EXT_multi_draw_arrays "
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"GL_EXT_packed_pixels "
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"GL_EXT_paletted_texture "
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"GL_EXT_point_parameters "
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"GL_EXT_polygon_offset "
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"GL_EXT_rescale_normal "
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"GL_EXT_secondary_color "
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"GL_EXT_separate_specular_color "
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"GL_EXT_shadow_funcs "
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"GL_EXT_shared_texture_palette "
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"GL_EXT_stencil_two_side "
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"GL_EXT_stencil_wrap "
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"GL_EXT_subtexture "
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"GL_EXT_texture "
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"GL_EXT_texture3D "
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"GL_EXT_texture_compression_dxt1 "
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"GL_EXT_texture_compression_s3tc "
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"GL_EXT_texture_edge_clamp "
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"GL_EXT_texture_env_add "
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"GL_EXT_texture_env_combine "
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"GL_EXT_texture_env_dot3 "
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"GL_EXT_texture_filter_anisotropic "
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"GL_EXT_texture_lod "
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"GL_EXT_texture_lod_bias "
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"GL_EXT_texture_mirror_clamp "
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"GL_EXT_texture_object "
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"GL_EXT_texture_rectangle "
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"GL_EXT_vertex_array "
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"GL_3DFX_texture_compression_FXT1 "
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"GL_APPLE_packed_pixels "
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"GL_ATI_draw_buffers "
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"GL_ATI_texture_env_combine3 "
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"GL_ATI_texture_mirror_once "
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"GL_HP_occlusion_test "
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"GL_IBM_texture_mirrored_repeat "
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"GL_INGR_blend_func_separate "
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"GL_MESA_pack_invert "
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"GL_MESA_ycbcr_texture "
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"GL_NV_blend_square "
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"GL_NV_depth_clamp "
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"GL_NV_fog_distance "
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"GL_NV_fragment_program "
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"GL_NV_fragment_program_option "
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"GL_NV_fragment_program2 "
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"GL_NV_light_max_exponent "
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"GL_NV_multisample_filter_hint "
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"GL_NV_point_sprite "
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"GL_NV_texgen_reflection "
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"GL_NV_texture_compression_vtc "
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"GL_NV_texture_env_combine4 "
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"GL_NV_texture_expand_normal "
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"GL_NV_texture_rectangle "
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"GL_NV_vertex_program "
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"GL_NV_vertex_program1_1 "
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"GL_NV_vertex_program2 "
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"GL_NV_vertex_program2_option "
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"GL_NV_vertex_program3 "
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"GL_OES_compressed_paletted_texture "
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"GL_SGI_color_matrix "
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"GL_SGI_color_table "
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"GL_SGIS_generate_mipmap "
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"GL_SGIS_multisample "
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"GL_SGIS_point_parameters "
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"GL_SGIS_texture_border_clamp "
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"GL_SGIS_texture_edge_clamp "
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"GL_SGIS_texture_lod "
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"GL_SGIX_depth_texture "
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"GL_SGIX_shadow "
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"GL_SGIX_shadow_ambient "
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"GL_SUN_slice_accum "
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;
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/*
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** We have made the simplifying assuption that the same extensions are
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** supported across all screens in a multi-screen system.
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*/
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static char GLXServerVendorName[] = "SGI";
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unsigned glxMajorVersion = 1;
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unsigned glxMinorVersion = 4;
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static char GLXServerExtensions[] =
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"GLX_ARB_multisample "
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"GLX_EXT_visual_info "
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"GLX_EXT_visual_rating "
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"GLX_EXT_import_context "
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"GLX_EXT_texture_from_pixmap "
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"GLX_OML_swap_method "
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"GLX_SGI_make_current_read "
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#ifndef __APPLE__
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"GLX_SGIS_multisample "
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"GLX_SGIX_hyperpipe "
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"GLX_SGIX_swap_barrier "
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#endif
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"GLX_SGIX_fbconfig "
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"GLX_SGIX_pbuffer "
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"GLX_MESA_copy_sub_buffer "
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;
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/*
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* If your DDX driver wants to register support for swap barriers or hyperpipe
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* topology, it should call __glXHyperpipeInit() or __glXSwapBarrierInit()
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* with a dispatch table of functions to handle the requests. In the XFree86
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* DDX, for example, you would call these near the bottom of the driver's
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* ScreenInit method, after DRI has been initialized.
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*
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* This should be replaced with a better method when we teach the server how
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* to load DRI drivers.
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*/
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void __glXHyperpipeInit(int screen, __GLXHyperpipeExtensionFuncs *funcs)
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{
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__GLXscreen *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
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pGlxScreen->hyperpipeFuncs = funcs;
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}
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void __glXSwapBarrierInit(int screen, __GLXSwapBarrierExtensionFuncs *funcs)
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{
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__GLXscreen *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
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pGlxScreen->swapBarrierFuncs = funcs;
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}
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static Bool
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glxCloseScreen (int index, ScreenPtr pScreen)
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{
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__GLXscreen *pGlxScreen = glxGetScreen(pScreen);
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pScreen->CloseScreen = pGlxScreen->CloseScreen;
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pScreen->DestroyWindow = pGlxScreen->DestroyWindow;
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pGlxScreen->destroy(pGlxScreen);
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return pScreen->CloseScreen(index, pScreen);
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}
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__GLXscreen *
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glxGetScreen(ScreenPtr pScreen)
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{
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return dixLookupPrivate(&pScreen->devPrivates, glxScreenPrivateKey);
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}
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_X_EXPORT void GlxSetVisualConfigs(int nconfigs,
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void *configs, void **privates)
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{
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/* We keep this stub around for the DDX drivers that still
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* call it. */
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}
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GLint glxConvertToXVisualType(int visualType)
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{
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static const int x_visual_types[] = {
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TrueColor, DirectColor,
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PseudoColor, StaticColor,
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GrayScale, StaticGray
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};
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return ( (unsigned) (visualType - GLX_TRUE_COLOR) < 6 )
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? x_visual_types[ visualType - GLX_TRUE_COLOR ] : -1;
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}
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/* This code inspired by composite/compinit.c. We could move this to
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* mi/ and share it with composite.*/
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static VisualPtr
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AddScreenVisuals(ScreenPtr pScreen, int count, int d)
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{
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XID *installedCmaps, *vids, vid;
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int numInstalledCmaps, numVisuals, i, j;
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VisualPtr visuals;
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ColormapPtr installedCmap;
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DepthPtr depth;
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int rc;
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depth = NULL;
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for (i = 0; i < pScreen->numDepths; i++) {
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if (pScreen->allowedDepths[i].depth == d) {
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depth = &pScreen->allowedDepths[i];
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break;
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}
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}
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if (depth == NULL)
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return NULL;
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/* Find the installed colormaps */
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installedCmaps = xalloc (pScreen->maxInstalledCmaps * sizeof (XID));
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if (!installedCmaps)
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return NULL;
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numInstalledCmaps = pScreen->ListInstalledColormaps(pScreen, installedCmaps);
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/* realloc the visual array to fit the new one in place */
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numVisuals = pScreen->numVisuals;
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visuals = xrealloc(pScreen->visuals, (numVisuals + count) * sizeof(VisualRec));
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if (!visuals) {
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xfree(installedCmaps);
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return NULL;
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}
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vids = xrealloc(depth->vids, (depth->numVids + count) * sizeof(XID));
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if (vids == NULL) {
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xfree(installedCmaps);
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xfree(visuals);
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return NULL;
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}
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/*
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* Fix up any existing installed colormaps -- we'll assume that
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* the only ones created so far have been installed. If this
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* isn't true, we'll have to walk the resource database looking
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* for all colormaps.
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*/
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for (i = 0; i < numInstalledCmaps; i++) {
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rc = dixLookupResourceByType((pointer *)&installedCmap,
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installedCmaps[i], RT_COLORMAP,
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serverClient, DixReadAccess);
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if (rc != Success)
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continue;
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j = installedCmap->pVisual - pScreen->visuals;
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installedCmap->pVisual = &visuals[j];
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}
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xfree(installedCmaps);
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for (i = 0; i < count; i++) {
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vid = FakeClientID(0);
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visuals[pScreen->numVisuals + i].vid = vid;
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vids[depth->numVids + i] = vid;
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}
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pScreen->visuals = visuals;
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pScreen->numVisuals += count;
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depth->vids = vids;
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depth->numVids += count;
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/* Return a pointer to the first of the added visuals. */
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return pScreen->visuals + pScreen->numVisuals - count;
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}
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static int
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findFirstSet(unsigned int v)
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{
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int i;
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for (i = 0; i < 32; i++)
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if (v & (1 << i))
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return i;
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return -1;
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}
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static void
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initGlxVisual(VisualPtr visual, __GLXconfig *config)
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{
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int maxBits;
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maxBits = max(config->redBits, max(config->greenBits, config->blueBits));
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config->visualID = visual->vid;
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visual->class = glxConvertToXVisualType(config->visualType);
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visual->bitsPerRGBValue = maxBits;
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visual->ColormapEntries = 1 << maxBits;
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visual->nplanes = config->redBits + config->greenBits + config->blueBits;
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visual->redMask = config->redMask;
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visual->greenMask = config->greenMask;
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visual->blueMask = config->blueMask;
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visual->offsetRed = findFirstSet(config->redMask);
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visual->offsetGreen = findFirstSet(config->greenMask);
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visual->offsetBlue = findFirstSet(config->blueMask);
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}
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static __GLXconfig *
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pickFBConfig(__GLXscreen *pGlxScreen, VisualPtr visual)
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{
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__GLXconfig *best = NULL, *config;
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int best_score = 0;
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for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {
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int score = 0;
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if (config->redMask != visual->redMask ||
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config->greenMask != visual->greenMask ||
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config->blueMask != visual->blueMask)
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continue;
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if (config->visualRating != GLX_NONE)
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continue;
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if (glxConvertToXVisualType(config->visualType) != visual->class)
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continue;
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/* If it's the 32-bit RGBA visual, demand a 32-bit fbconfig. */
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if (visual->nplanes == 32 && config->rgbBits != 32)
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continue;
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/* Can't use the same FBconfig for multiple X visuals. I think. */
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if (config->visualID != 0)
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continue;
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if (config->doubleBufferMode > 0)
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score += 8;
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if (config->depthBits > 0)
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score += 4;
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if (config->stencilBits > 0)
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score += 2;
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if (config->alphaBits > 0)
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score++;
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if (score > best_score) {
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best = config;
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best_score = score;
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}
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}
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return best;
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}
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static Bool
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glxDestroyWindow(WindowPtr pWin)
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{
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ScreenPtr pScreen = pWin->drawable.pScreen;
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__GLXscreen *pGlxScreen = glxGetScreen(pScreen);
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Bool retval = TRUE;
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FreeResource(pWin->drawable.id, FALSE);
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/* call lower wrapped functions */
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if (pGlxScreen->DestroyWindow) {
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/* unwrap */
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pScreen->DestroyWindow = pGlxScreen->DestroyWindow;
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/* call lower layers */
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retval = (*pScreen->DestroyWindow)(pWin);
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/* rewrap */
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pGlxScreen->DestroyWindow = pScreen->DestroyWindow;
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pScreen->DestroyWindow = glxDestroyWindow;
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}
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return retval;
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}
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void __glXScreenInit(__GLXscreen *pGlxScreen, ScreenPtr pScreen)
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{
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__GLXconfig *m;
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__GLXconfig *config;
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int i;
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pGlxScreen->pScreen = pScreen;
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pGlxScreen->GLextensions = xstrdup(GLServerExtensions);
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pGlxScreen->GLXvendor = xstrdup(GLXServerVendorName);
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pGlxScreen->GLXextensions = xstrdup(GLXServerExtensions);
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pGlxScreen->GLXmajor = 1;
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pGlxScreen->GLXminor = 2;
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pGlxScreen->CloseScreen = pScreen->CloseScreen;
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pScreen->CloseScreen = glxCloseScreen;
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pGlxScreen->DestroyWindow = pScreen->DestroyWindow;
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pScreen->DestroyWindow = glxDestroyWindow;
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i = 0;
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for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next) {
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m->fbconfigID = FakeClientID(0);
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m->visualID = 0;
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i++;
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}
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pGlxScreen->numFBConfigs = i;
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pGlxScreen->visuals =
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xcalloc(pGlxScreen->numFBConfigs, sizeof (__GLXconfig *));
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/* First, try to choose featureful FBconfigs for the existing X visuals.
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* Note that if multiple X visuals end up with the same FBconfig being
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* chosen, the later X visuals don't get GLX visuals (because we want to
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* prioritize the root visual being GLX).
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*/
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for (i = 0; i < pScreen->numVisuals; i++) {
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VisualPtr visual = &pScreen->visuals[i];
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config = pickFBConfig(pGlxScreen, visual);
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if (config) {
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pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;
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config->visualID = visual->vid;
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}
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}
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/* Then, add new visuals corresponding to all FBconfigs that didn't have
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* an existing, appropriate visual.
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*/
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for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {
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int depth;
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VisualPtr visual;
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if (config->visualID != 0)
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continue;
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/* Only count RGB bits and not alpha, as we're not trying to create
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* visuals for compositing (that's what the 32-bit composite visual
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* set up above is for.
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*/
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depth = config->redBits + config->greenBits + config->blueBits;
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/* Make sure that our FBconfig's depth can actually be displayed
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* (corresponds to an existing visual).
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*/
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for (i = 0; i < pScreen->numVisuals; i++) {
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if (depth == pScreen->visuals[i].nplanes)
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break;
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}
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if (i == pScreen->numVisuals)
|
|
continue;
|
|
|
|
/* Create a new X visual for our FBconfig. */
|
|
visual = AddScreenVisuals(pScreen, 1, depth);
|
|
if (visual == NULL)
|
|
continue;
|
|
|
|
pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;
|
|
initGlxVisual(visual, config);
|
|
}
|
|
|
|
dixSetPrivate(&pScreen->devPrivates, glxScreenPrivateKey, pGlxScreen);
|
|
}
|
|
|
|
void __glXScreenDestroy(__GLXscreen *screen)
|
|
{
|
|
xfree(screen->GLXvendor);
|
|
xfree(screen->GLXextensions);
|
|
xfree(screen->GLextensions);
|
|
}
|