4ee0a53de8
new license. If we want to, later we can import 4.4RC3 again and pick
up the files that have the new license, but for now the vendor branch
is "pure."
402 lines
11 KiB
C
402 lines
11 KiB
C
/* $XFree86: xc/programs/Xserver/GL/glx/glxscreens.c,v 1.15 2004/02/12 02:25:01 torrey Exp $ */
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/*
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** License Applicability. Except to the extent portions of this file are
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** made subject to an alternative license as permitted in the SGI Free
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** Software License B, Version 1.1 (the "License"), the contents of this
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** file are subject only to the provisions of the License. You may not use
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** this file except in compliance with the License. You may obtain a copy
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** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
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** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
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**
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** http://oss.sgi.com/projects/FreeB
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**
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** Note that, as provided in the License, the Software is distributed on an
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** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
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** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
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** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
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** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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**
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** Original Code. The Original Code is: OpenGL Sample Implementation,
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** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
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** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
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** Copyright in any portions created by third parties is as indicated
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** elsewhere herein. All Rights Reserved.
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**
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** Additional Notice Provisions: The application programming interfaces
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** established by SGI in conjunction with the Original Code are The
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** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
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** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
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** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
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** Window System(R) (Version 1.3), released October 19, 1998. This software
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** was created using the OpenGL(R) version 1.2.1 Sample Implementation
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** published by SGI, but has not been independently verified as being
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** compliant with the OpenGL(R) version 1.2.1 Specification.
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**
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*/
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#ifdef IN_MODULE
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#include <xf86_ansic.h>
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#else
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#include <string.h>
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#include <signal.h>
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#endif
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#include <windowstr.h>
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#include "glxserver.h"
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#include "glxutil.h"
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const char GLServerVersion[] = "1.2";
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static const char GLServerExtensions[] =
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"GL_ARB_depth_texture "
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"GL_ARB_imaging "
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"GL_ARB_multitexture "
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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_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_transpose_matrix "
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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_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_multi_draw_arrays "
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"GL_EXT_packed_pixels "
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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_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_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_lod "
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"GL_EXT_texture_lod_bias "
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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_APPLE_packed_pixels "
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"GL_ATI_texture_mirror_once "
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"GL_ATI_texture_env_combine3 "
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#if 0
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/* This is currently removed because there seem to be some problems with
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* it and the software-only indirect rendering path. At this point, I'm
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* not sure which side (client or server) has the problem. - idr
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*/
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"GL_HP_occlusion_test "
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#endif
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"GL_IBM_texture_mirrored_repeat "
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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_point_sprite "
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"GL_NV_texgen_reflection "
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"GL_NV_texture_rectangle "
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"GL_SGIS_generate_mipmap "
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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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;
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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_SGI_make_current_read "
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#ifndef __DARWIN__
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"GLX_SGIS_multisample "
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#endif
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;
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/*
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** This comes from the GL library that the server will link with. Right
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** now, that is the DDX Sample OpenGL.
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*/
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extern __GLXscreenInfo __glDDXScreenInfo;
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__GLXscreenInfo *__glXScreens[] = {
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&__glDDXScreenInfo,
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};
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GLint __glXNumStaticScreens = (sizeof __glXScreens / sizeof __glXScreens[0]);
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__GLXscreenInfo *__glXActiveScreens;
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GLint __glXNumActiveScreens;
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RESTYPE __glXDrawableRes;
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#if 0
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static int
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CountBits(unsigned long mask)
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{
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int count = 0;
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while(mask) {
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count += (mask&1);
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mask >>= 1;
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}
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return count;
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}
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#endif
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#if 0
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/*
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** A typical implementation would not probably not run through the screen's
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** visuals to find ones that match the visual configs supplied by the DDX
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** Sample OpenGL as we do here; we have done this to make this code easy to
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** drop into an existing X server.
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*/
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static int matchVisuals(__GLXvisualConfig *pGlxVisual, int numVisuals,
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int screen)
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{
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int i, j;
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__GLXvisualConfig *pvis = pGlxVisual;
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ScreenPtr pScreen = screenInfo.screens[screen];
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VisualPtr pVisual;
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int numMatchingVisuals = 0;
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int *used;
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used = (int *)__glXMalloc(pScreen->numVisuals*sizeof(int));
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__glXMemset(used, 0, pScreen->numVisuals*sizeof(int));
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for (i=0; i < numVisuals; i++, pvis++) {
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/*
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** Look through all the server's visuals to see which match.
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*/
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pvis->vid = 0;
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pVisual = pScreen->visuals;
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for (j=0; j < pScreen->numVisuals; j++, pVisual++) {
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if (pvis->class == pVisual->class &&
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pvis->bufferSize == pVisual->nplanes &&
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!used[j]) {
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int rBits, gBits, bBits, aBits;
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/* count bits per rgb */
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rBits = CountBits(pVisual->redMask);
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gBits = CountBits(pVisual->greenMask);
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bBits = CountBits(pVisual->blueMask);
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aBits = 0;
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if ((pvis->redSize == rBits) &&
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(pvis->greenSize == gBits) &&
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(pvis->blueSize == bBits) &&
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(pvis->alphaSize == aBits)) {
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/*
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** We'll consider this a match.
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*/
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pvis->vid = pVisual->vid;
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pvis->redMask = pVisual->redMask;
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pvis->greenMask = pVisual->greenMask;
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pvis->blueMask = pVisual->blueMask;
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pvis->alphaMask = 0;
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numMatchingVisuals++;
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used[j] = 1;
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break;
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}
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}
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}
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}
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__glXFree(used);
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return numMatchingVisuals;
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}
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#endif
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/*
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** Destroy routine that gets called when a drawable is freed. A drawable
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** contains the ancillary buffers needed for rendering.
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*/
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static Bool DrawableGone(__GLXdrawablePrivate *glxPriv, XID xid)
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{
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__GLXcontext *cx, *cx1;
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/*
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** Use glxPriv->type to figure out what kind of drawable this is. Don't
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** use glxPriv->pDraw->type because by the time this routine is called,
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** the pDraw might already have been freed.
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*/
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if (glxPriv->type == DRAWABLE_WINDOW) {
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/*
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** When a window is destroyed, notify all context bound to
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** it, that there are no longer bound to anything.
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*/
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for (cx = glxPriv->drawGlxc; cx; cx = cx1) {
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cx1 = cx->nextDrawPriv;
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cx->pendingState |= __GLX_PENDING_DESTROY;
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}
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for (cx = glxPriv->readGlxc; cx; cx = cx1) {
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cx1 = cx->nextReadPriv;
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cx->pendingState |= __GLX_PENDING_DESTROY;
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}
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}
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/*
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** set the size to 0, so that context that may still be using this
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** drawable not do anything harmful
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*/
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glxPriv->xorigin = 0;
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glxPriv->yorigin = 0;
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glxPriv->width = 0;
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glxPriv->height = 0;
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__glXUnrefDrawablePrivate(glxPriv);
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return True;
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}
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/*
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** This hook gets called when a window moves or changes size.
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*/
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static Bool PositionWindow(WindowPtr pWin, int x, int y)
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{
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ScreenPtr pScreen;
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__GLXcontext *glxc;
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__GLXdrawablePrivate *glxPriv;
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Bool ret;
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/*
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** Call wrapped position window routine
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*/
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pScreen = pWin->drawable.pScreen;
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pScreen->PositionWindow =
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__glXActiveScreens[pScreen->myNum].WrappedPositionWindow;
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ret = (*pScreen->PositionWindow)(pWin, x, y);
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pScreen->PositionWindow = PositionWindow;
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/*
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** Tell all contexts rendering into this window that the window size
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** has changed.
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*/
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glxPriv = (__GLXdrawablePrivate *) LookupIDByType(pWin->drawable.id,
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__glXDrawableRes);
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if (glxPriv == NULL) {
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/*
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** This window is not being used by the OpenGL.
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*/
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return ret;
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}
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/*
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** resize the drawable
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*/
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/* first change the drawable size */
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if (__glXResizeDrawableBuffers(glxPriv) == GL_FALSE) {
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/* resize failed! */
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/* XXX: what can we possibly do here? */
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ret = False;
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}
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/* mark contexts as needing resize */
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for (glxc = glxPriv->drawGlxc; glxc; glxc = glxc->nextDrawPriv) {
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glxc->pendingState |= __GLX_PENDING_RESIZE;
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}
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for (glxc = glxPriv->readGlxc; glxc; glxc = glxc->nextReadPriv) {
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glxc->pendingState |= __GLX_PENDING_RESIZE;
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}
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return ret;
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}
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/*
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** Wrap our own PositionWindow routine around the server's, so we can
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** be notified when a window changes size
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*/
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static void wrapPositionWindow(int screen)
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{
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ScreenPtr pScreen = screenInfo.screens[screen];
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__glXActiveScreens[screen].WrappedPositionWindow = pScreen->PositionWindow;
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pScreen->PositionWindow = PositionWindow;
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}
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void __glXScreenInit(GLint numscreens)
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{
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GLint i,j;
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/*
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** This alloc has to work or else the server might as well core dump.
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*/
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__glXActiveScreens =
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(__GLXscreenInfo *) __glXMalloc(sizeof(__GLXscreenInfo) * numscreens);
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for (i=0; i < numscreens; i++) {
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/*
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** Probe each static screen to see which exists.
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*/
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for (j=0; j < __glXNumStaticScreens; j++) {
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if ((*__glXScreens[j]->screenProbe)(i)) {
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__glXActiveScreens[i] = *__glXScreens[j];
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#if 0
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/* we don't use this since matchVisuals doesn't allow alpha */
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__glXActiveScreens[i].numUsableVisuals =
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matchVisuals(__glXActiveScreens[i].pGlxVisual,
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__glXActiveScreens[i].numVisuals, i);
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#else
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__glXActiveScreens[i].numUsableVisuals = __glXActiveScreens[i].numVisuals;
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#endif
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__glXActiveScreens[i].GLextensions = __glXStrdup(GLServerExtensions);
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__glXActiveScreens[i].GLXvendor = __glXStrdup(GLXServerVendorName);
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__glXActiveScreens[i].GLXversion = __glXStrdup(GLXServerVersion);
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__glXActiveScreens[i].GLXextensions = __glXStrdup(GLXServerExtensions);
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#ifdef X11R5
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__glXDrawableRes = CreateNewResourceType(DrawableGone);
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#else
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__glXDrawableRes = CreateNewResourceType((DeleteType)DrawableGone);
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#endif
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wrapPositionWindow(i);
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}
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}
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}
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__glXNumActiveScreens = numscreens;
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}
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void __glXScreenReset(void)
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{
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int i;
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for (i = 0; i < __glXNumActiveScreens; i++) {
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__glXFree(__glXActiveScreens[i].GLXvendor);
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__glXFree(__glXActiveScreens[i].GLXversion);
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__glXFree(__glXActiveScreens[i].GLXextensions);
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__glXFree(__glXActiveScreens[i].GLextensions);
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}
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xfree(__glXActiveScreens);
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__glXActiveScreens = NULL;
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__glXNumActiveScreens = 0;
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}
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