426 lines
12 KiB
C
426 lines
12 KiB
C
/*
|
|
* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
|
|
* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice including the dates of first publication and
|
|
* either this permission notice or a reference to
|
|
* http://oss.sgi.com/projects/FreeB/
|
|
* shall be included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
|
|
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
* Except as contained in this notice, the name of Silicon Graphics, Inc.
|
|
* shall not be used in advertising or otherwise to promote the sale, use or
|
|
* other dealings in this Software without prior written authorization from
|
|
* Silicon Graphics, Inc.
|
|
*/
|
|
|
|
#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"
|
|
#include "protocol-versions.h"
|
|
|
|
static DevPrivateKeyRec glxScreenPrivateKeyRec;
|
|
#define glxScreenPrivateKey (&glxScreenPrivateKeyRec)
|
|
|
|
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";
|
|
unsigned glxMajorVersion = SERVER_GLX_MAJOR_VERSION;
|
|
unsigned glxMinorVersion = SERVER_GLX_MINOR_VERSION;
|
|
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 "
|
|
#endif
|
|
"GLX_SGIX_fbconfig "
|
|
"GLX_SGIX_pbuffer "
|
|
"GLX_MESA_copy_sub_buffer "
|
|
"GLX_INTEL_swap_event"
|
|
;
|
|
|
|
static Bool
|
|
glxCloseScreen (int index, ScreenPtr pScreen)
|
|
{
|
|
__GLXscreen *pGlxScreen = glxGetScreen(pScreen);
|
|
|
|
pScreen->CloseScreen = pGlxScreen->CloseScreen;
|
|
|
|
pGlxScreen->destroy(pGlxScreen);
|
|
|
|
return pScreen->CloseScreen(index, pScreen);
|
|
}
|
|
|
|
__GLXscreen *
|
|
glxGetScreen(ScreenPtr pScreen)
|
|
{
|
|
return dixLookupPrivate(&pScreen->devPrivates, glxScreenPrivateKey);
|
|
}
|
|
|
|
_X_EXPORT void GlxSetVisualConfigs(int nconfigs,
|
|
void *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;
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
int i;
|
|
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;
|
|
|
|
if (ResizeVisualArray(pScreen, count, depth) == FALSE)
|
|
return NULL;
|
|
|
|
/* 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);
|
|
}
|
|
|
|
static __GLXconfig *
|
|
pickFBConfig(__GLXscreen *pGlxScreen, VisualPtr visual)
|
|
{
|
|
__GLXconfig *best = NULL, *config;
|
|
int best_score = 0;
|
|
|
|
for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {
|
|
int score = 0;
|
|
|
|
if (config->redMask != visual->redMask ||
|
|
config->greenMask != visual->greenMask ||
|
|
config->blueMask != visual->blueMask)
|
|
continue;
|
|
if (config->visualRating != GLX_NONE)
|
|
continue;
|
|
if (glxConvertToXVisualType(config->visualType) != visual->class)
|
|
continue;
|
|
/* If it's the 32-bit RGBA visual, demand a 32-bit fbconfig. */
|
|
if (visual->nplanes == 32 && config->rgbBits != 32)
|
|
continue;
|
|
/* Can't use the same FBconfig for multiple X visuals. I think. */
|
|
if (config->visualID != 0)
|
|
continue;
|
|
|
|
if (config->doubleBufferMode > 0)
|
|
score += 8;
|
|
if (config->depthBits > 0)
|
|
score += 4;
|
|
if (config->stencilBits > 0)
|
|
score += 2;
|
|
if (config->alphaBits > 0)
|
|
score++;
|
|
|
|
if (score > best_score) {
|
|
best = config;
|
|
best_score = score;
|
|
}
|
|
}
|
|
|
|
return best;
|
|
}
|
|
|
|
void __glXScreenInit(__GLXscreen *pGlxScreen, ScreenPtr pScreen)
|
|
{
|
|
__GLXconfig *m;
|
|
__GLXconfig *config;
|
|
int i;
|
|
|
|
if (!dixRegisterPrivateKey(&glxScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
|
|
return;
|
|
|
|
pGlxScreen->pScreen = pScreen;
|
|
pGlxScreen->GLextensions = strdup(GLServerExtensions);
|
|
pGlxScreen->GLXvendor = strdup(GLXServerVendorName);
|
|
pGlxScreen->GLXextensions = strdup(GLXServerExtensions);
|
|
|
|
/* All GLX providers must support all of the functionality required for at
|
|
* least GLX 1.2. If the provider supports a higher version, the GLXminor
|
|
* version can be changed in the provider's screen-probe routine. For
|
|
* most providers, the screen-probe routine is the caller of this
|
|
* function.
|
|
*/
|
|
pGlxScreen->GLXmajor = 1;
|
|
pGlxScreen->GLXminor = 2;
|
|
|
|
pGlxScreen->CloseScreen = pScreen->CloseScreen;
|
|
pScreen->CloseScreen = glxCloseScreen;
|
|
|
|
i = 0;
|
|
for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next) {
|
|
m->fbconfigID = FakeClientID(0);
|
|
m->visualID = 0;
|
|
i++;
|
|
}
|
|
pGlxScreen->numFBConfigs = i;
|
|
|
|
pGlxScreen->visuals =
|
|
calloc(pGlxScreen->numFBConfigs, sizeof (__GLXconfig *));
|
|
|
|
/* First, try to choose featureful FBconfigs for the existing X visuals.
|
|
* Note that if multiple X visuals end up with the same FBconfig being
|
|
* chosen, the later X visuals don't get GLX visuals (because we want to
|
|
* prioritize the root visual being GLX).
|
|
*/
|
|
for (i = 0; i < pScreen->numVisuals; i++) {
|
|
VisualPtr visual = &pScreen->visuals[i];
|
|
|
|
config = pickFBConfig(pGlxScreen, visual);
|
|
if (config) {
|
|
pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;
|
|
config->visualID = visual->vid;
|
|
}
|
|
}
|
|
|
|
/* Then, add new visuals corresponding to all FBconfigs that didn't have
|
|
* an existing, appropriate visual.
|
|
*/
|
|
for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {
|
|
int depth;
|
|
|
|
VisualPtr visual;
|
|
|
|
if (config->visualID != 0)
|
|
continue;
|
|
|
|
/* Only count RGB bits and not alpha, as we're not trying to create
|
|
* visuals for compositing (that's what the 32-bit composite visual
|
|
* set up above is for.
|
|
*/
|
|
depth = config->redBits + config->greenBits + config->blueBits;
|
|
|
|
/* Make sure that our FBconfig's depth can actually be displayed
|
|
* (corresponds to an existing visual).
|
|
*/
|
|
for (i = 0; i < pScreen->numVisuals; i++) {
|
|
if (depth == pScreen->visuals[i].nplanes)
|
|
break;
|
|
}
|
|
/* if it can't, fix up the fbconfig to not advertise window support */
|
|
if (i == pScreen->numVisuals)
|
|
config->drawableType &= ~(GLX_WINDOW_BIT);
|
|
|
|
/* fbconfig must support window drawables */
|
|
if (!(config->drawableType & GLX_WINDOW_BIT)) {
|
|
config->visualID = 0;
|
|
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)
|
|
{
|
|
free(screen->GLXvendor);
|
|
free(screen->GLXextensions);
|
|
free(screen->GLextensions);
|
|
}
|