aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/glx/glxscreens.c
diff options
context:
space:
mode:
Diffstat (limited to 'xorg-server/glx/glxscreens.c')
-rw-r--r--xorg-server/glx/glxscreens.c843
1 files changed, 425 insertions, 418 deletions
diff --git a/xorg-server/glx/glxscreens.c b/xorg-server/glx/glxscreens.c
index 060dfaccd..c4ad42648 100644
--- a/xorg-server/glx/glxscreens.c
+++ b/xorg-server/glx/glxscreens.c
@@ -1,418 +1,425 @@
-/*
- * 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 (i == pScreen->numVisuals)
- continue;
-
- /* Create a new X visual for our FBconfig. */
- visual = AddScreenVisuals(pScreen, 1, depth);
- if (visual == NULL)
- continue;
-
- pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;
- initGlxVisual(visual, config);
- }
-
- dixSetPrivate(&pScreen->devPrivates, glxScreenPrivateKey, pGlxScreen);
-}
-
-void __glXScreenDestroy(__GLXscreen *screen)
-{
- free(screen->GLXvendor);
- free(screen->GLXextensions);
- free(screen->GLextensions);
-}
+/*
+ * 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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 10:52:40 +0000