619c4d60eb
With trying to match depths so that you didn't end up with a depth 24 fbconfig for the 32-bit composite visual, I broke the alpha bits on the depth 24 X visual, which angered other applications. But in fixing that, the pickFBconfigs code for "minimal" also could end up breaking GLX visuals if the same FBconfig was chosen for more than one X visual. We have no reason to not expose as many visuals as possible, but the old "all" mode didn't match any existing X visuals to GLX visuals, so normal GL apps didn't work at all. Instead, replace it with a simple combination of the two modes: Create GLX visuals by picking unique FBconfigs with as many features as possible for each X visual in order. Then, for all remaining FBconfigs that are appropriate for display, add a corresponding X and GLX visual. This gets all applications (even ones that aren't smart enough to do FBconfigs) get all the options to get the visual configuration they want. The only potential downside is that the composite ARGB visual is unique and gets a nearly full-featured GLX visual (except that the root visual might have taken the tastiest FBconfig), which means that a dumb compositing manager could waste resources. Write compositing managers using FBconfigs instead, please.
481 lines
14 KiB
C
481 lines
14 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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static char GLXServerVersion[] = "1.2";
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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_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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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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__GLXvisualConfig *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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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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installedCmap = LookupIDByType (installedCmaps[i], RT_COLORMAP);
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if (!installedCmap)
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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;
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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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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->GLXversion = xstrdup(GLXServerVersion);
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pGlxScreen->GLXextensions = xstrdup(GLXServerExtensions);
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pGlxScreen->CloseScreen = pScreen->CloseScreen;
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pScreen->CloseScreen = glxCloseScreen;
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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)
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continue;
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/* Create a new X visual for our FBconfig. */
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visual = AddScreenVisuals(pScreen, 1, depth);
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if (visual == NULL)
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continue;
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pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;
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initGlxVisual(visual, config);
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}
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dixSetPrivate(&pScreen->devPrivates, glxScreenPrivateKey, pGlxScreen);
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}
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void __glXScreenDestroy(__GLXscreen *screen)
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{
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xfree(screen->GLXvendor);
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xfree(screen->GLXversion);
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xfree(screen->GLXextensions);
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xfree(screen->GLextensions);
|
|
}
|