xenocara/xserver/glx/glxscreens.c

605 lines
17 KiB
C
Raw Normal View History

/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <GL/glxtokens.h>
#include <string.h>
#include <windowstr.h>
#include <os.h>
#include <colormapst.h>
#include "privates.h"
#include "glxserver.h"
#include "glxutil.h"
#include "glxext.h"
static DevPrivateKey glxScreenPrivateKey = &glxScreenPrivateKey;
const char GLServerVersion[] = "1.4";
static const char GLServerExtensions[] =
"GL_ARB_depth_texture "
"GL_ARB_draw_buffers "
"GL_ARB_fragment_program "
"GL_ARB_fragment_program_shadow "
"GL_ARB_imaging "
"GL_ARB_multisample "
"GL_ARB_multitexture "
"GL_ARB_occlusion_query "
"GL_ARB_point_parameters "
"GL_ARB_point_sprite "
"GL_ARB_shadow "
"GL_ARB_shadow_ambient "
"GL_ARB_texture_border_clamp "
"GL_ARB_texture_compression "
"GL_ARB_texture_cube_map "
"GL_ARB_texture_env_add "
"GL_ARB_texture_env_combine "
"GL_ARB_texture_env_crossbar "
"GL_ARB_texture_env_dot3 "
"GL_ARB_texture_mirrored_repeat "
"GL_ARB_texture_non_power_of_two "
"GL_ARB_transpose_matrix "
"GL_ARB_vertex_program "
"GL_ARB_window_pos "
"GL_EXT_abgr "
"GL_EXT_bgra "
"GL_EXT_blend_color "
"GL_EXT_blend_equation_separate "
"GL_EXT_blend_func_separate "
"GL_EXT_blend_logic_op "
"GL_EXT_blend_minmax "
"GL_EXT_blend_subtract "
"GL_EXT_clip_volume_hint "
"GL_EXT_copy_texture "
"GL_EXT_draw_range_elements "
"GL_EXT_fog_coord "
"GL_EXT_framebuffer_object "
"GL_EXT_multi_draw_arrays "
"GL_EXT_packed_pixels "
"GL_EXT_paletted_texture "
"GL_EXT_point_parameters "
"GL_EXT_polygon_offset "
"GL_EXT_rescale_normal "
"GL_EXT_secondary_color "
"GL_EXT_separate_specular_color "
"GL_EXT_shadow_funcs "
"GL_EXT_shared_texture_palette "
"GL_EXT_stencil_two_side "
"GL_EXT_stencil_wrap "
"GL_EXT_subtexture "
"GL_EXT_texture "
"GL_EXT_texture3D "
"GL_EXT_texture_compression_dxt1 "
"GL_EXT_texture_compression_s3tc "
"GL_EXT_texture_edge_clamp "
"GL_EXT_texture_env_add "
"GL_EXT_texture_env_combine "
"GL_EXT_texture_env_dot3 "
"GL_EXT_texture_filter_anisotropic "
"GL_EXT_texture_lod "
"GL_EXT_texture_lod_bias "
"GL_EXT_texture_mirror_clamp "
"GL_EXT_texture_object "
"GL_EXT_texture_rectangle "
"GL_EXT_vertex_array "
"GL_3DFX_texture_compression_FXT1 "
"GL_APPLE_packed_pixels "
"GL_ATI_draw_buffers "
"GL_ATI_texture_env_combine3 "
"GL_ATI_texture_mirror_once "
"GL_HP_occlusion_test "
"GL_IBM_texture_mirrored_repeat "
"GL_INGR_blend_func_separate "
"GL_MESA_pack_invert "
"GL_MESA_ycbcr_texture "
"GL_NV_blend_square "
"GL_NV_depth_clamp "
"GL_NV_fog_distance "
"GL_NV_fragment_program "
"GL_NV_fragment_program_option "
"GL_NV_fragment_program2 "
"GL_NV_light_max_exponent "
"GL_NV_multisample_filter_hint "
"GL_NV_point_sprite "
"GL_NV_texgen_reflection "
"GL_NV_texture_compression_vtc "
"GL_NV_texture_env_combine4 "
"GL_NV_texture_expand_normal "
"GL_NV_texture_rectangle "
"GL_NV_vertex_program "
"GL_NV_vertex_program1_1 "
"GL_NV_vertex_program2 "
"GL_NV_vertex_program2_option "
"GL_NV_vertex_program3 "
"GL_OES_compressed_paletted_texture "
"GL_SGI_color_matrix "
"GL_SGI_color_table "
"GL_SGIS_generate_mipmap "
"GL_SGIS_multisample "
"GL_SGIS_point_parameters "
"GL_SGIS_texture_border_clamp "
"GL_SGIS_texture_edge_clamp "
"GL_SGIS_texture_lod "
"GL_SGIX_depth_texture "
"GL_SGIX_shadow "
"GL_SGIX_shadow_ambient "
"GL_SUN_slice_accum "
;
/*
** We have made the simplifying assuption that the same extensions are
** supported across all screens in a multi-screen system.
*/
static char GLXServerVendorName[] = "SGI";
static char GLXServerVersion[] = "1.2";
static char GLXServerExtensions[] =
"GLX_ARB_multisample "
"GLX_EXT_visual_info "
"GLX_EXT_visual_rating "
"GLX_EXT_import_context "
"GLX_EXT_texture_from_pixmap "
"GLX_OML_swap_method "
"GLX_SGI_make_current_read "
#ifndef __APPLE__
"GLX_SGIS_multisample "
"GLX_SGIX_hyperpipe "
"GLX_SGIX_swap_barrier "
#endif
"GLX_SGIX_fbconfig "
"GLX_MESA_copy_sub_buffer "
;
/*
** This hook gets called when a window moves or changes size.
*/
static Bool glxPositionWindow(WindowPtr pWin, int x, int y)
{
ScreenPtr pScreen;
__GLXdrawable *glxPriv;
Bool ret;
__GLXscreen *pGlxScreen;
/*
** Call wrapped position window routine
*/
pScreen = pWin->drawable.pScreen;
pGlxScreen = glxGetScreen(pScreen);
pScreen->PositionWindow = pGlxScreen->PositionWindow;
ret = (*pScreen->PositionWindow)(pWin, x, y);
pScreen->PositionWindow = glxPositionWindow;
/*
** Tell all contexts rendering into this window that the window size
** has changed.
*/
glxPriv = (__GLXdrawable *) LookupIDByType(pWin->drawable.id,
__glXDrawableRes);
if (glxPriv == NULL) {
/*
** This window is not being used by the OpenGL.
*/
return ret;
}
/*
** resize the drawable
*/
/* first change the drawable size */
if (glxPriv->resize(glxPriv) == GL_FALSE) {
/* resize failed! */
/* XXX: what can we possibly do here? */
ret = False;
}
return ret;
}
/*
* If your DDX driver wants to register support for swap barriers or hyperpipe
* topology, it should call __glXHyperpipeInit() or __glXSwapBarrierInit()
* with a dispatch table of functions to handle the requests. In the XFree86
* DDX, for example, you would call these near the bottom of the driver's
* ScreenInit method, after DRI has been initialized.
*
* This should be replaced with a better method when we teach the server how
* to load DRI drivers.
*/
void __glXHyperpipeInit(int screen, __GLXHyperpipeExtensionFuncs *funcs)
{
__GLXscreen *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
pGlxScreen->hyperpipeFuncs = funcs;
}
void __glXSwapBarrierInit(int screen, __GLXSwapBarrierExtensionFuncs *funcs)
{
__GLXscreen *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
pGlxScreen->swapBarrierFuncs = funcs;
}
static Bool
glxCloseScreen (int index, ScreenPtr pScreen)
{
__GLXscreen *pGlxScreen = glxGetScreen(pScreen);
pScreen->CloseScreen = pGlxScreen->CloseScreen;
pScreen->PositionWindow = pGlxScreen->PositionWindow;
pGlxScreen->destroy(pGlxScreen);
return pScreen->CloseScreen(index, pScreen);
}
__GLXscreen *
glxGetScreen(ScreenPtr pScreen)
{
return dixLookupPrivate(&pScreen->devPrivates, glxScreenPrivateKey);
}
void GlxSetVisualConfigs(int nconfigs,
__GLXvisualConfig *configs, void **privates)
{
/* We keep this stub around for the DDX drivers that still
* call it. */
}
GLint glxConvertToXVisualType(int visualType)
{
static const int x_visual_types[] = {
TrueColor, DirectColor,
PseudoColor, StaticColor,
GrayScale, StaticGray
};
return ( (unsigned) (visualType - GLX_TRUE_COLOR) < 6 )
? x_visual_types[ visualType - GLX_TRUE_COLOR ] : -1;
}
static void
filterOutNativeConfigs(__GLXscreen *pGlxScreen)
{
__GLXconfig *m, *next, **last;
ScreenPtr pScreen = pGlxScreen->pScreen;
int i, depth;
last = &pGlxScreen->fbconfigs;
for (m = pGlxScreen->fbconfigs; m != NULL; m = next) {
next = m->next;
depth = m->redBits + m->blueBits + m->greenBits;
for (i = 0; i < pScreen->numVisuals; i++) {
if (pScreen->visuals[i].nplanes == depth) {
*last = m;
last = &m->next;
break;
}
}
}
*last = NULL;
}
static XID
findVisualForConfig(ScreenPtr pScreen, __GLXconfig *m)
{
int i;
for (i = 0; i < pScreen->numVisuals; i++) {
if (glxConvertToXVisualType(m->visualType) == pScreen->visuals[i].class)
return pScreen->visuals[i].vid;
}
return 0;
}
/* This code inspired by composite/compinit.c. We could move this to
* mi/ and share it with composite.*/
static VisualPtr
AddScreenVisuals(ScreenPtr pScreen, int count, int d)
{
XID *installedCmaps, *vids, vid;
int numInstalledCmaps, numVisuals, i, j;
VisualPtr visuals;
ColormapPtr installedCmap;
DepthPtr depth;
depth = NULL;
for (i = 0; i < pScreen->numDepths; i++) {
if (pScreen->allowedDepths[i].depth == d) {
depth = &pScreen->allowedDepths[i];
break;
}
}
if (depth == NULL)
return NULL;
/* Find the installed colormaps */
installedCmaps = xalloc (pScreen->maxInstalledCmaps * sizeof (XID));
if (!installedCmaps)
return NULL;
numInstalledCmaps = pScreen->ListInstalledColormaps(pScreen, installedCmaps);
/* realloc the visual array to fit the new one in place */
numVisuals = pScreen->numVisuals;
visuals = xrealloc(pScreen->visuals, (numVisuals + count) * sizeof(VisualRec));
if (!visuals) {
xfree(installedCmaps);
return NULL;
}
vids = xrealloc(depth->vids, (depth->numVids + count) * sizeof(XID));
if (vids == NULL) {
xfree(installedCmaps);
xfree(visuals);
return NULL;
}
/*
* Fix up any existing installed colormaps -- we'll assume that
* the only ones created so far have been installed. If this
* isn't true, we'll have to walk the resource database looking
* for all colormaps.
*/
for (i = 0; i < numInstalledCmaps; i++) {
installedCmap = LookupIDByType (installedCmaps[i], RT_COLORMAP);
if (!installedCmap)
continue;
j = installedCmap->pVisual - pScreen->visuals;
installedCmap->pVisual = &visuals[j];
}
xfree(installedCmaps);
for (i = 0; i < count; i++) {
vid = FakeClientID(0);
visuals[pScreen->numVisuals + i].vid = vid;
vids[depth->numVids + i] = vid;
}
pScreen->visuals = visuals;
pScreen->numVisuals += count;
depth->vids = vids;
depth->numVids += count;
/* Return a pointer to the first of the added visuals. */
return pScreen->visuals + pScreen->numVisuals - count;
}
static int
findFirstSet(unsigned int v)
{
int i;
for (i = 0; i < 32; i++)
if (v & (1 << i))
return i;
return -1;
}
static void
initGlxVisual(VisualPtr visual, __GLXconfig *config)
{
int maxBits;
maxBits = max(config->redBits, max(config->greenBits, config->blueBits));
config->visualID = visual->vid;
visual->class = glxConvertToXVisualType(config->visualType);
visual->bitsPerRGBValue = maxBits;
visual->ColormapEntries = 1 << maxBits;
visual->nplanes = config->redBits + config->greenBits + config->blueBits;
visual->redMask = config->redMask;
visual->greenMask = config->greenMask;
visual->blueMask = config->blueMask;
visual->offsetRed = findFirstSet(config->redMask);
visual->offsetGreen = findFirstSet(config->greenMask);
visual->offsetBlue = findFirstSet(config->blueMask);
}
typedef struct {
GLboolean doubleBuffer;
GLboolean depthBuffer;
GLboolean stencilBuffer;
} FBConfigTemplateRec, *FBConfigTemplatePtr;
static __GLXconfig *
pickFBConfig(__GLXscreen *pGlxScreen, FBConfigTemplatePtr template, int class)
{
__GLXconfig *config;
for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {
if (config->visualRating != GLX_NONE)
continue;
if (glxConvertToXVisualType(config->visualType) != class)
continue;
if ((config->doubleBufferMode > 0) != template->doubleBuffer)
continue;
if ((config->depthBits > 0) != template->depthBuffer)
continue;
if ((config->stencilBits > 0) != template->stencilBuffer)
continue;
return config;
}
return NULL;
}
static void
addMinimalSet(__GLXscreen *pGlxScreen)
{
__GLXconfig *config;
VisualPtr visuals;
int i, j;
FBConfigTemplateRec best = { GL_TRUE, GL_TRUE, GL_TRUE };
FBConfigTemplateRec good = { GL_TRUE, GL_TRUE, GL_FALSE };
FBConfigTemplateRec minimal = { GL_FALSE, GL_FALSE, GL_FALSE };
pGlxScreen->visuals = xcalloc(pGlxScreen->pScreen->numVisuals,
sizeof (__GLXconfig *));
if (pGlxScreen->visuals == NULL) {
ErrorF("Failed to allocate for minimal set of GLX visuals\n");
return;
}
visuals = pGlxScreen->pScreen->visuals;
for (i = 0, j = 0; i < pGlxScreen->pScreen->numVisuals; i++) {
if (visuals[i].nplanes == 32)
config = pickFBConfig(pGlxScreen, &minimal, visuals[i].class);
else {
config = pickFBConfig(pGlxScreen, &best, visuals[i].class);
if (config == NULL)
config = pickFBConfig(pGlxScreen, &good, visuals[i].class);
}
if (config == NULL)
config = pGlxScreen->fbconfigs;
if (config == NULL)
continue;
pGlxScreen->visuals[j] = config;
config->visualID = visuals[i].vid;
j++;
}
pGlxScreen->numVisuals = j;
}
static void
addTypicalSet(__GLXscreen *pGlxScreen)
{
addMinimalSet(pGlxScreen);
}
static void
addFullSet(__GLXscreen *pGlxScreen)
{
__GLXconfig *config;
VisualPtr visuals;
int i, depth;
pGlxScreen->visuals =
xcalloc(pGlxScreen->numFBConfigs, sizeof (__GLXconfig *));
if (pGlxScreen->visuals == NULL) {
ErrorF("Failed to allocate for full set of GLX visuals\n");
return;
}
config = pGlxScreen->fbconfigs;
depth = config->redBits + config->greenBits + config->blueBits;
visuals = AddScreenVisuals(pGlxScreen->pScreen, pGlxScreen->numFBConfigs, depth);
if (visuals == NULL) {
xfree(pGlxScreen->visuals);
return;
}
pGlxScreen->numVisuals = pGlxScreen->numFBConfigs;
for (i = 0, config = pGlxScreen->fbconfigs; config; config = config->next, i++) {
pGlxScreen->visuals[i] = config;
initGlxVisual(&visuals[i], config);
}
}
static int glxVisualConfig = GLX_ALL_VISUALS;
void GlxSetVisualConfig(int config)
{
glxVisualConfig = config;
}
void __glXScreenInit(__GLXscreen *pGlxScreen, ScreenPtr pScreen)
{
__GLXconfig *m;
int i;
pGlxScreen->pScreen = pScreen;
pGlxScreen->GLextensions = xstrdup(GLServerExtensions);
pGlxScreen->GLXvendor = xstrdup(GLXServerVendorName);
pGlxScreen->GLXversion = xstrdup(GLXServerVersion);
pGlxScreen->GLXextensions = xstrdup(GLXServerExtensions);
pGlxScreen->PositionWindow = pScreen->PositionWindow;
pScreen->PositionWindow = glxPositionWindow;
pGlxScreen->CloseScreen = pScreen->CloseScreen;
pScreen->CloseScreen = glxCloseScreen;
filterOutNativeConfigs(pGlxScreen);
i = 0;
for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next) {
m->fbconfigID = FakeClientID(0);
m->visualID = findVisualForConfig(pScreen, m);
i++;
}
pGlxScreen->numFBConfigs = i;
/* Select a subset of fbconfigs that we send to the client when it
* asks for the glx visuals. All the fbconfigs here have a valid
* value for visual ID and each visual ID is only present once.
* This runs before composite adds its extra visual so we have to
* remember the number of visuals here.*/
switch (glxVisualConfig) {
case GLX_MINIMAL_VISUALS:
addMinimalSet(pGlxScreen);
break;
case GLX_TYPICAL_VISUALS:
addTypicalSet(pGlxScreen);
break;
case GLX_ALL_VISUALS:
addFullSet(pGlxScreen);
break;
}
dixSetPrivate(&pScreen->devPrivates, glxScreenPrivateKey, pGlxScreen);
}
void __glXScreenDestroy(__GLXscreen *screen)
{
xfree(screen->GLXvendor);
xfree(screen->GLXversion);
xfree(screen->GLXextensions);
xfree(screen->GLextensions);
}