1201 lines
36 KiB
C
1201 lines
36 KiB
C
/*
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* (C) Copyright IBM Corporation 2002, 2004
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* 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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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file dri_util.c
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* DRI utility functions.
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*
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* This module acts as glue between GLX and the actual hardware driver. A DRI
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* driver doesn't really \e have to use any of this - it's optional. But, some
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* useful stuff is done here that otherwise would have to be duplicated in most
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* drivers.
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*
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* Basically, these utility functions take care of some of the dirty details of
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* screen initialization, context creation, context binding, DRM setup, etc.
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*
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* These functions are compiled into each DRI driver so libGL.so knows nothing
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* about them.
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*/
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#include <stdbool.h>
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#include "dri_util.h"
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#include "dri_context.h"
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#include "dri_screen.h"
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#include "util/u_endian.h"
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#include "util/driconf.h"
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#include "main/framebuffer.h"
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#include "main/version.h"
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#include "main/debug_output.h"
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#include "main/errors.h"
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driOptionDescription __dri2ConfigOptions[] = {
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DRI_CONF_SECTION_DEBUG
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DRI_CONF_GLX_EXTENSION_OVERRIDE()
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DRI_CONF_INDIRECT_GL_EXTENSION_OVERRIDE()
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DRI_CONF_SECTION_END
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DRI_CONF_SECTION_PERFORMANCE
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DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1)
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DRI_CONF_SECTION_END
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};
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/*****************************************************************/
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/** \name Screen handling functions */
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/*****************************************************************/
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/*@{*/
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static void
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setupLoaderExtensions(__DRIscreen *psp,
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const __DRIextension **extensions)
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{
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int i;
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for (i = 0; extensions[i]; i++) {
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if (strcmp(extensions[i]->name, __DRI_DRI2_LOADER) == 0)
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psp->dri2.loader = (__DRIdri2LoaderExtension *) extensions[i];
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if (strcmp(extensions[i]->name, __DRI_IMAGE_LOOKUP) == 0)
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psp->dri2.image = (__DRIimageLookupExtension *) extensions[i];
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if (strcmp(extensions[i]->name, __DRI_USE_INVALIDATE) == 0)
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psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i];
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if (strcmp(extensions[i]->name, __DRI_BACKGROUND_CALLABLE) == 0)
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psp->dri2.backgroundCallable = (__DRIbackgroundCallableExtension *) extensions[i];
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if (strcmp(extensions[i]->name, __DRI_SWRAST_LOADER) == 0)
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psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i];
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if (strcmp(extensions[i]->name, __DRI_IMAGE_LOADER) == 0)
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psp->image.loader = (__DRIimageLoaderExtension *) extensions[i];
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if (strcmp(extensions[i]->name, __DRI_MUTABLE_RENDER_BUFFER_LOADER) == 0)
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psp->mutableRenderBuffer.loader = (__DRImutableRenderBufferLoaderExtension *) extensions[i];
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if (strcmp(extensions[i]->name, __DRI_KOPPER_LOADER) == 0)
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psp->kopper_loader = (__DRIkopperLoaderExtension *) extensions[i];
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}
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}
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/**
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* This is the first entrypoint in the driver called by the DRI driver loader
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* after dlopen()ing it.
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*
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* It's used to create global state for the driver across contexts on the same
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* Display.
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*/
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static __DRIscreen *
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driCreateNewScreen2(int scrn, int fd,
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const __DRIextension **extensions,
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const __DRIextension **driver_extensions,
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const __DRIconfig ***driver_configs, void *data)
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{
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static const __DRIextension *emptyExtensionList[] = { NULL };
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__DRIscreen *psp;
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psp = calloc(1, sizeof(*psp));
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if (!psp)
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return NULL;
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assert(driver_extensions);
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for (int i = 0; driver_extensions[i]; i++) {
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if (strcmp(driver_extensions[i]->name, __DRI_DRIVER_VTABLE) == 0) {
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psp->driver =
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((__DRIDriverVtableExtension *)driver_extensions[i])->vtable;
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}
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}
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setupLoaderExtensions(psp, extensions);
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// dri2 drivers require working invalidate
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if (fd != -1 && !psp->dri2.useInvalidate) {
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free(psp);
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return NULL;
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}
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psp->loaderPrivate = data;
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psp->extensions = emptyExtensionList;
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psp->fd = fd;
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psp->myNum = scrn;
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/* Option parsing before ->InitScreen(), as some options apply there. */
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driParseOptionInfo(&psp->optionInfo,
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__dri2ConfigOptions, ARRAY_SIZE(__dri2ConfigOptions));
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driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum,
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"dri2", NULL, NULL, NULL, 0, NULL, 0);
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*driver_configs = psp->driver->InitScreen(psp);
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if (*driver_configs == NULL) {
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free(psp);
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return NULL;
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}
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struct gl_constants consts = { 0 };
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gl_api api;
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unsigned version;
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api = API_OPENGLES2;
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if (_mesa_override_gl_version_contextless(&consts, &api, &version))
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psp->max_gl_es2_version = version;
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api = API_OPENGL_COMPAT;
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if (_mesa_override_gl_version_contextless(&consts, &api, &version)) {
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psp->max_gl_core_version = version;
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if (api == API_OPENGL_COMPAT)
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psp->max_gl_compat_version = version;
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}
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psp->api_mask = 0;
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if (psp->max_gl_compat_version > 0)
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psp->api_mask |= (1 << __DRI_API_OPENGL);
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if (psp->max_gl_core_version > 0)
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psp->api_mask |= (1 << __DRI_API_OPENGL_CORE);
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if (psp->max_gl_es1_version > 0)
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psp->api_mask |= (1 << __DRI_API_GLES);
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if (psp->max_gl_es2_version > 0)
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psp->api_mask |= (1 << __DRI_API_GLES2);
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if (psp->max_gl_es2_version >= 30)
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psp->api_mask |= (1 << __DRI_API_GLES3);
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return psp;
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}
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static __DRIscreen *
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dri2CreateNewScreen(int scrn, int fd,
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const __DRIextension **extensions,
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const __DRIconfig ***driver_configs, void *data)
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{
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return driCreateNewScreen2(scrn, fd, extensions,
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galliumdrm_driver_extensions,
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driver_configs, data);
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}
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static __DRIscreen *
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swkmsCreateNewScreen(int scrn, int fd,
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const __DRIextension **extensions,
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const __DRIconfig ***driver_configs, void *data)
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{
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return driCreateNewScreen2(scrn, fd, extensions,
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dri_swrast_kms_driver_extensions,
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driver_configs, data);
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}
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/** swrast driver createNewScreen entrypoint. */
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static __DRIscreen *
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driSWRastCreateNewScreen(int scrn, const __DRIextension **extensions,
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const __DRIconfig ***driver_configs, void *data)
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{
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return driCreateNewScreen2(scrn, -1, extensions,
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galliumsw_driver_extensions,
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driver_configs, data);
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}
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static __DRIscreen *
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driSWRastCreateNewScreen2(int scrn, const __DRIextension **extensions,
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const __DRIextension **driver_extensions,
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const __DRIconfig ***driver_configs, void *data)
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{
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return driCreateNewScreen2(scrn, -1, extensions, driver_extensions,
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driver_configs, data);
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}
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/**
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* Destroy the per-screen private information.
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*
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* \internal
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* This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls
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* drmClose(), and finally frees \p screenPrivate.
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*/
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static void driDestroyScreen(__DRIscreen *psp)
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{
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if (psp) {
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/* No interaction with the X-server is possible at this point. This
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* routine is called after XCloseDisplay, so there is no protocol
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* stream open to the X-server anymore.
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*/
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psp->driver->DestroyScreen(psp);
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driDestroyOptionCache(&psp->optionCache);
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driDestroyOptionInfo(&psp->optionInfo);
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free(psp);
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}
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}
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static const __DRIextension **driGetExtensions(__DRIscreen *psp)
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{
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return psp->extensions;
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}
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/*@}*/
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/* WARNING: HACK: Local defines to avoid pulling glx.h.
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*/
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#define GLX_NONE 0x8000
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#define GLX_DONT_CARE 0xFFFFFFFF
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#define __ATTRIB(attrib, field) case attrib: *value = config->modes.field; break
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/**
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* Return the value of a configuration attribute. The attribute is
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* indicated by the index.
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*/
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static int
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driGetConfigAttribIndex(const __DRIconfig *config,
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unsigned int index, unsigned int *value)
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{
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switch (index + 1) {
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__ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits);
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__ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits);
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__ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits);
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__ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits);
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case __DRI_ATTRIB_LEVEL:
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case __DRI_ATTRIB_LUMINANCE_SIZE:
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case __DRI_ATTRIB_AUX_BUFFERS:
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*value = 0;
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break;
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__ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits);
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case __DRI_ATTRIB_ALPHA_MASK_SIZE:
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/* I have no idea what this value was ever meant to mean, it's
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* never been set to anything, just say 0.
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*/
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*value = 0;
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break;
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__ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits);
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__ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits);
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__ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits);
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__ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits);
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__ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits);
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__ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits);
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case __DRI_ATTRIB_SAMPLE_BUFFERS:
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*value = !!config->modes.samples;
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break;
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__ATTRIB(__DRI_ATTRIB_SAMPLES, samples);
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case __DRI_ATTRIB_RENDER_TYPE:
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/* no support for color index mode */
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*value = __DRI_ATTRIB_RGBA_BIT;
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if (config->modes.floatMode)
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*value |= __DRI_ATTRIB_FLOAT_BIT;
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break;
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case __DRI_ATTRIB_CONFIG_CAVEAT:
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if (config->modes.accumRedBits != 0)
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*value = __DRI_ATTRIB_SLOW_BIT;
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else
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*value = 0;
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break;
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case __DRI_ATTRIB_CONFORMANT:
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*value = GL_TRUE;
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break;
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__ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode);
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__ATTRIB(__DRI_ATTRIB_STEREO, stereoMode);
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case __DRI_ATTRIB_TRANSPARENT_TYPE:
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case __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE: /* horrible bc hack */
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*value = GLX_NONE;
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break;
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case __DRI_ATTRIB_TRANSPARENT_RED_VALUE:
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case __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE:
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case __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE:
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case __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE:
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*value = GLX_DONT_CARE;
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break;
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case __DRI_ATTRIB_FLOAT_MODE:
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*value = config->modes.floatMode;
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break;
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__ATTRIB(__DRI_ATTRIB_RED_MASK, redMask);
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__ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask);
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__ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask);
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__ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask);
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case __DRI_ATTRIB_MAX_PBUFFER_WIDTH:
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case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT:
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case __DRI_ATTRIB_MAX_PBUFFER_PIXELS:
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case __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH:
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case __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT:
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case __DRI_ATTRIB_VISUAL_SELECT_GROUP:
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*value = 0;
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break;
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__ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod);
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case __DRI_ATTRIB_MAX_SWAP_INTERVAL:
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*value = INT_MAX;
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break;
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case __DRI_ATTRIB_MIN_SWAP_INTERVAL:
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*value = 0;
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break;
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case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
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case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
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case __DRI_ATTRIB_YINVERTED:
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*value = GL_TRUE;
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break;
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case __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE:
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*value = GL_FALSE;
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break;
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case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS:
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*value = __DRI_ATTRIB_TEXTURE_1D_BIT |
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__DRI_ATTRIB_TEXTURE_2D_BIT |
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__DRI_ATTRIB_TEXTURE_RECTANGLE_BIT;
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break;
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__ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable);
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case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER:
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*value = GL_FALSE;
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break;
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__ATTRIB(__DRI_ATTRIB_RED_SHIFT, redShift);
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__ATTRIB(__DRI_ATTRIB_GREEN_SHIFT, greenShift);
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__ATTRIB(__DRI_ATTRIB_BLUE_SHIFT, blueShift);
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__ATTRIB(__DRI_ATTRIB_ALPHA_SHIFT, alphaShift);
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default:
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/* XXX log an error or smth */
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return GL_FALSE;
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}
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return GL_TRUE;
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}
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/**
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* Get the value of a configuration attribute.
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* \param attrib the attribute (one of the _DRI_ATTRIB_x tokens)
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* \param value returns the attribute's value
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* \return 1 for success, 0 for failure
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*/
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static int
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driGetConfigAttrib(const __DRIconfig *config,
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unsigned int attrib, unsigned int *value)
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{
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return driGetConfigAttribIndex(config, attrib - 1, value);
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}
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/**
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* Get a configuration attribute name and value, given an index.
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* \param index which field of the __DRIconfig to query
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* \param attrib returns the attribute name (one of the _DRI_ATTRIB_x tokens)
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* \param value returns the attribute's value
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* \return 1 for success, 0 for failure
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*/
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static int
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driIndexConfigAttrib(const __DRIconfig *config, int index,
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unsigned int *attrib, unsigned int *value)
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{
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if (driGetConfigAttribIndex(config, index, value)) {
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*attrib = index + 1;
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return GL_TRUE;
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}
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return GL_FALSE;
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}
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static bool
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validate_context_version(__DRIscreen *screen,
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int mesa_api,
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unsigned major_version,
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unsigned minor_version,
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unsigned *dri_ctx_error)
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{
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unsigned req_version = 10 * major_version + minor_version;
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unsigned max_version = 0;
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switch (mesa_api) {
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case API_OPENGL_COMPAT:
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max_version = screen->max_gl_compat_version;
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break;
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case API_OPENGL_CORE:
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max_version = screen->max_gl_core_version;
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break;
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case API_OPENGLES:
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max_version = screen->max_gl_es1_version;
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break;
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case API_OPENGLES2:
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max_version = screen->max_gl_es2_version;
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break;
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default:
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max_version = 0;
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break;
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}
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if (max_version == 0) {
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*dri_ctx_error = __DRI_CTX_ERROR_BAD_API;
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return false;
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} else if (req_version > max_version) {
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*dri_ctx_error = __DRI_CTX_ERROR_BAD_VERSION;
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return false;
|
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}
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|
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return true;
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}
|
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|
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/*****************************************************************/
|
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/** \name Context handling functions */
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/*****************************************************************/
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/*@{*/
|
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|
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static __DRIcontext *
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driCreateContextAttribs(__DRIscreen *screen, int api,
|
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const __DRIconfig *config,
|
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__DRIcontext *shared,
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unsigned num_attribs,
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const uint32_t *attribs,
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unsigned *error,
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void *data)
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{
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__DRIcontext *context;
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const struct gl_config *modes = (config != NULL) ? &config->modes : NULL;
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void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
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gl_api mesa_api;
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struct __DriverContextConfig ctx_config;
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ctx_config.major_version = 1;
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ctx_config.minor_version = 0;
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ctx_config.flags = 0;
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ctx_config.attribute_mask = 0;
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ctx_config.priority = __DRI_CTX_PRIORITY_MEDIUM;
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assert((num_attribs == 0) || (attribs != NULL));
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|
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if (!(screen->api_mask & (1 << api))) {
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*error = __DRI_CTX_ERROR_BAD_API;
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return NULL;
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}
|
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|
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switch (api) {
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case __DRI_API_OPENGL:
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mesa_api = API_OPENGL_COMPAT;
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break;
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case __DRI_API_GLES:
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mesa_api = API_OPENGLES;
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break;
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case __DRI_API_GLES2:
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|
case __DRI_API_GLES3:
|
|
mesa_api = API_OPENGLES2;
|
|
break;
|
|
case __DRI_API_OPENGL_CORE:
|
|
mesa_api = API_OPENGL_CORE;
|
|
break;
|
|
default:
|
|
*error = __DRI_CTX_ERROR_BAD_API;
|
|
return NULL;
|
|
}
|
|
|
|
for (unsigned i = 0; i < num_attribs; i++) {
|
|
switch (attribs[i * 2]) {
|
|
case __DRI_CTX_ATTRIB_MAJOR_VERSION:
|
|
ctx_config.major_version = attribs[i * 2 + 1];
|
|
break;
|
|
case __DRI_CTX_ATTRIB_MINOR_VERSION:
|
|
ctx_config.minor_version = attribs[i * 2 + 1];
|
|
break;
|
|
case __DRI_CTX_ATTRIB_FLAGS:
|
|
ctx_config.flags = attribs[i * 2 + 1];
|
|
break;
|
|
case __DRI_CTX_ATTRIB_RESET_STRATEGY:
|
|
if (attribs[i * 2 + 1] != __DRI_CTX_RESET_NO_NOTIFICATION) {
|
|
ctx_config.attribute_mask |=
|
|
__DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY;
|
|
ctx_config.reset_strategy = attribs[i * 2 + 1];
|
|
} else {
|
|
ctx_config.attribute_mask &=
|
|
~__DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY;
|
|
}
|
|
break;
|
|
case __DRI_CTX_ATTRIB_PRIORITY:
|
|
ctx_config.attribute_mask |= __DRIVER_CONTEXT_ATTRIB_PRIORITY;
|
|
ctx_config.priority = attribs[i * 2 + 1];
|
|
break;
|
|
case __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR:
|
|
if (attribs[i * 2 + 1] != __DRI_CTX_RELEASE_BEHAVIOR_FLUSH) {
|
|
ctx_config.attribute_mask |=
|
|
__DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR;
|
|
ctx_config.release_behavior = attribs[i * 2 + 1];
|
|
} else {
|
|
ctx_config.attribute_mask &=
|
|
~__DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR;
|
|
}
|
|
break;
|
|
case __DRI_CTX_ATTRIB_NO_ERROR:
|
|
if (attribs[i * 2 + 1] != 0) {
|
|
ctx_config.attribute_mask |=
|
|
__DRIVER_CONTEXT_ATTRIB_NO_ERROR;
|
|
ctx_config.no_error = attribs[i * 2 + 1];
|
|
} else {
|
|
ctx_config.attribute_mask &=
|
|
~__DRIVER_CONTEXT_ATTRIB_NO_ERROR;
|
|
}
|
|
break;
|
|
default:
|
|
/* We can't create a context that satisfies the requirements of an
|
|
* attribute that we don't understand. Return failure.
|
|
*/
|
|
assert(!"Should not get here.");
|
|
*error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* The specific Mesa driver may not support the GL_ARB_compatibilty
|
|
* extension or the compatibility profile. In that case, we treat an
|
|
* API_OPENGL_COMPAT 3.1 as API_OPENGL_CORE. We reject API_OPENGL_COMPAT
|
|
* 3.2+ in any case.
|
|
*/
|
|
if (mesa_api == API_OPENGL_COMPAT &&
|
|
ctx_config.major_version == 3 && ctx_config.minor_version == 1 &&
|
|
screen->max_gl_compat_version < 31)
|
|
mesa_api = API_OPENGL_CORE;
|
|
|
|
/* The latest version of EGL_KHR_create_context spec says:
|
|
*
|
|
* "If the EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR flag bit is set in
|
|
* EGL_CONTEXT_FLAGS_KHR, then a <debug context> will be created.
|
|
* [...] This bit is supported for OpenGL and OpenGL ES contexts.
|
|
*
|
|
* No other EGL_CONTEXT_OPENGL_*_BIT is legal for an ES context.
|
|
*
|
|
* However, Mesa's EGL layer translates the context attribute
|
|
* EGL_CONTEXT_OPENGL_ROBUST_ACCESS into the context flag
|
|
* __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS. That attribute is legal for ES
|
|
* (with EGL 1.5 or EGL_EXT_create_context_robustness) and GL (only with
|
|
* EGL 1.5).
|
|
*
|
|
* From the EGL_EXT_create_context_robustness spec:
|
|
*
|
|
* This extension is written against the OpenGL ES 2.0 Specification
|
|
* but can apply to OpenGL ES 1.1 and up.
|
|
*
|
|
* From the EGL 1.5 (2014.08.27) spec, p55:
|
|
*
|
|
* If the EGL_CONTEXT_OPENGL_ROBUST_ACCESS attribute is set to
|
|
* EGL_TRUE, a context supporting robust buffer access will be created.
|
|
* OpenGL contexts must support the GL_ARB_robustness extension, or
|
|
* equivalent core API functional- ity. OpenGL ES contexts must support
|
|
* the GL_EXT_robustness extension, or equivalent core API
|
|
* functionality.
|
|
*/
|
|
if (mesa_api != API_OPENGL_COMPAT
|
|
&& mesa_api != API_OPENGL_CORE
|
|
&& (ctx_config.flags & ~(__DRI_CTX_FLAG_DEBUG |
|
|
__DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS))) {
|
|
*error = __DRI_CTX_ERROR_BAD_FLAG;
|
|
return NULL;
|
|
}
|
|
|
|
/* There are no forward-compatible contexts before OpenGL 3.0. The
|
|
* GLX_ARB_create_context spec says:
|
|
*
|
|
* "Forward-compatible contexts are defined only for OpenGL versions
|
|
* 3.0 and later."
|
|
*
|
|
* Forward-looking contexts are supported by silently converting the
|
|
* requested API to API_OPENGL_CORE.
|
|
*
|
|
* In Mesa, a debug context is the same as a regular context.
|
|
*/
|
|
if ((ctx_config.flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) {
|
|
mesa_api = API_OPENGL_CORE;
|
|
}
|
|
|
|
const uint32_t allowed_flags = (__DRI_CTX_FLAG_DEBUG
|
|
| __DRI_CTX_FLAG_FORWARD_COMPATIBLE
|
|
| __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
|
|
| __DRI_CTX_FLAG_RESET_ISOLATION);
|
|
if (ctx_config.flags & ~allowed_flags) {
|
|
*error = __DRI_CTX_ERROR_UNKNOWN_FLAG;
|
|
return NULL;
|
|
}
|
|
|
|
if (!validate_context_version(screen, mesa_api,
|
|
ctx_config.major_version,
|
|
ctx_config.minor_version,
|
|
error))
|
|
return NULL;
|
|
|
|
context = calloc(1, sizeof *context);
|
|
if (!context) {
|
|
*error = __DRI_CTX_ERROR_NO_MEMORY;
|
|
return NULL;
|
|
}
|
|
|
|
context->loaderPrivate = data;
|
|
|
|
context->driScreenPriv = screen;
|
|
context->driDrawablePriv = NULL;
|
|
context->driReadablePriv = NULL;
|
|
|
|
if (!dri_create_context(mesa_api, modes, context, &ctx_config, error,
|
|
shareCtx)) {
|
|
free(context);
|
|
return NULL;
|
|
}
|
|
|
|
*error = __DRI_CTX_ERROR_SUCCESS;
|
|
return context;
|
|
}
|
|
|
|
static __DRIcontext *
|
|
driCreateNewContextForAPI(__DRIscreen *screen, int api,
|
|
const __DRIconfig *config,
|
|
__DRIcontext *shared, void *data)
|
|
{
|
|
unsigned error;
|
|
|
|
return driCreateContextAttribs(screen, api, config, shared, 0, NULL,
|
|
&error, data);
|
|
}
|
|
|
|
static __DRIcontext *
|
|
driCreateNewContext(__DRIscreen *screen, const __DRIconfig *config,
|
|
__DRIcontext *shared, void *data)
|
|
{
|
|
return driCreateNewContextForAPI(screen, __DRI_API_OPENGL,
|
|
config, shared, data);
|
|
}
|
|
|
|
/**
|
|
* Destroy the per-context private information.
|
|
*
|
|
* \internal
|
|
* This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls
|
|
* drmDestroyContext(), and finally frees \p contextPrivate.
|
|
*/
|
|
static void
|
|
driDestroyContext(__DRIcontext *pcp)
|
|
{
|
|
if (pcp) {
|
|
dri_destroy_context(pcp);
|
|
free(pcp);
|
|
}
|
|
}
|
|
|
|
static int
|
|
driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)
|
|
{
|
|
(void) dest;
|
|
(void) src;
|
|
(void) mask;
|
|
return GL_FALSE;
|
|
}
|
|
|
|
/*@}*/
|
|
|
|
|
|
/*****************************************************************/
|
|
/** \name Context (un)binding functions */
|
|
/*****************************************************************/
|
|
/*@{*/
|
|
|
|
static void dri_get_drawable(__DRIdrawable *pdp);
|
|
static void dri_put_drawable(__DRIdrawable *pdp);
|
|
|
|
/**
|
|
* This function takes both a read buffer and a draw buffer. This is needed
|
|
* for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent
|
|
* function.
|
|
*/
|
|
static int driBindContext(__DRIcontext *pcp,
|
|
__DRIdrawable *pdp,
|
|
__DRIdrawable *prp)
|
|
{
|
|
/*
|
|
** Assume error checking is done properly in glXMakeCurrent before
|
|
** calling driUnbindContext.
|
|
*/
|
|
|
|
if (!pcp)
|
|
return GL_FALSE;
|
|
|
|
/* Bind the drawable to the context */
|
|
pcp->driDrawablePriv = pdp;
|
|
pcp->driReadablePriv = prp;
|
|
if (pdp) {
|
|
pdp->driContextPriv = pcp;
|
|
dri_get_drawable(pdp);
|
|
}
|
|
if (prp && pdp != prp) {
|
|
dri_get_drawable(prp);
|
|
}
|
|
|
|
return dri_make_current(pcp, pdp, prp);
|
|
}
|
|
|
|
/**
|
|
* Unbind context.
|
|
*
|
|
* \param scrn the screen.
|
|
* \param gc context.
|
|
*
|
|
* \return \c GL_TRUE on success, or \c GL_FALSE on failure.
|
|
*
|
|
* \internal
|
|
* This function calls __DriverAPIRec::UnbindContext, and then decrements
|
|
* __DRIdrawableRec::refcount which must be non-zero for a successful
|
|
* return.
|
|
*
|
|
* While casting the opaque private pointers associated with the parameters
|
|
* into their respective real types it also assures they are not \c NULL.
|
|
*/
|
|
static int driUnbindContext(__DRIcontext *pcp)
|
|
{
|
|
__DRIdrawable *pdp;
|
|
__DRIdrawable *prp;
|
|
|
|
/*
|
|
** Assume error checking is done properly in glXMakeCurrent before
|
|
** calling driUnbindContext.
|
|
*/
|
|
|
|
if (pcp == NULL)
|
|
return GL_FALSE;
|
|
|
|
/*
|
|
** Call dri_unbind_context before checking for valid drawables
|
|
** to handle surfaceless contexts properly.
|
|
*/
|
|
dri_unbind_context(pcp);
|
|
|
|
pdp = pcp->driDrawablePriv;
|
|
prp = pcp->driReadablePriv;
|
|
|
|
/* already unbound */
|
|
if (!pdp && !prp)
|
|
return GL_TRUE;
|
|
|
|
assert(pdp);
|
|
if (pdp->refcount == 0) {
|
|
/* ERROR!!! */
|
|
return GL_FALSE;
|
|
}
|
|
|
|
dri_put_drawable(pdp);
|
|
|
|
if (prp != pdp) {
|
|
if (prp->refcount == 0) {
|
|
/* ERROR!!! */
|
|
return GL_FALSE;
|
|
}
|
|
|
|
dri_put_drawable(prp);
|
|
}
|
|
|
|
pcp->driDrawablePriv = NULL;
|
|
pcp->driReadablePriv = NULL;
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
/*@}*/
|
|
|
|
|
|
static void dri_get_drawable(__DRIdrawable *pdp)
|
|
{
|
|
pdp->refcount++;
|
|
}
|
|
|
|
static void dri_put_drawable(__DRIdrawable *pdp)
|
|
{
|
|
if (pdp) {
|
|
pdp->refcount--;
|
|
if (pdp->refcount)
|
|
return;
|
|
|
|
pdp->driScreenPriv->driver->DestroyBuffer(pdp);
|
|
free(pdp);
|
|
}
|
|
}
|
|
|
|
static __DRIdrawable *
|
|
driCreateNewDrawable(__DRIscreen *screen,
|
|
const __DRIconfig *config,
|
|
void *data)
|
|
{
|
|
__DRIdrawable *pdraw;
|
|
|
|
assert(data != NULL);
|
|
|
|
pdraw = malloc(sizeof *pdraw);
|
|
if (!pdraw)
|
|
return NULL;
|
|
|
|
pdraw->loaderPrivate = data;
|
|
|
|
pdraw->driScreenPriv = screen;
|
|
pdraw->driContextPriv = NULL;
|
|
pdraw->refcount = 0;
|
|
pdraw->lastStamp = 0;
|
|
pdraw->w = 0;
|
|
pdraw->h = 0;
|
|
|
|
dri_get_drawable(pdraw);
|
|
|
|
if (!screen->driver->CreateBuffer(screen, pdraw, &config->modes,
|
|
GL_FALSE)) {
|
|
free(pdraw);
|
|
return NULL;
|
|
}
|
|
|
|
pdraw->dri2.stamp = pdraw->lastStamp + 1;
|
|
|
|
return pdraw;
|
|
}
|
|
|
|
static void
|
|
driDestroyDrawable(__DRIdrawable *pdp)
|
|
{
|
|
/*
|
|
* The loader's data structures are going away, even if pdp itself stays
|
|
* around for the time being because it is currently bound. This happens
|
|
* when a currently bound GLX pixmap is destroyed.
|
|
*
|
|
* Clear out the pointer back into the loader's data structures to avoid
|
|
* accessing an outdated pointer.
|
|
*/
|
|
pdp->loaderPrivate = NULL;
|
|
|
|
dri_put_drawable(pdp);
|
|
}
|
|
|
|
static __DRIbuffer *
|
|
dri2AllocateBuffer(__DRIscreen *screen,
|
|
unsigned int attachment, unsigned int format,
|
|
int width, int height)
|
|
{
|
|
return screen->driver->AllocateBuffer(screen, attachment, format,
|
|
width, height);
|
|
}
|
|
|
|
static void
|
|
dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
|
|
{
|
|
screen->driver->ReleaseBuffer(screen, buffer);
|
|
}
|
|
|
|
|
|
static int
|
|
dri2ConfigQueryb(__DRIscreen *screen, const char *var, unsigned char *val)
|
|
{
|
|
if (!driCheckOption(&screen->optionCache, var, DRI_BOOL))
|
|
return -1;
|
|
|
|
*val = driQueryOptionb(&screen->optionCache, var);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
dri2ConfigQueryi(__DRIscreen *screen, const char *var, int *val)
|
|
{
|
|
if (!driCheckOption(&screen->optionCache, var, DRI_INT) &&
|
|
!driCheckOption(&screen->optionCache, var, DRI_ENUM))
|
|
return -1;
|
|
|
|
*val = driQueryOptioni(&screen->optionCache, var);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
dri2ConfigQueryf(__DRIscreen *screen, const char *var, float *val)
|
|
{
|
|
if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT))
|
|
return -1;
|
|
|
|
*val = driQueryOptionf(&screen->optionCache, var);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
dri2ConfigQuerys(__DRIscreen *screen, const char *var, char **val)
|
|
{
|
|
if (!driCheckOption(&screen->optionCache, var, DRI_STRING))
|
|
return -1;
|
|
|
|
*val = driQueryOptionstr(&screen->optionCache, var);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int
|
|
driGetAPIMask(__DRIscreen *screen)
|
|
{
|
|
return screen->api_mask;
|
|
}
|
|
|
|
/**
|
|
* swrast swapbuffers entrypoint.
|
|
*
|
|
* DRI2 implements this inside the loader with only flushes handled by the
|
|
* driver.
|
|
*/
|
|
static void
|
|
driSwapBuffers(__DRIdrawable *pdp)
|
|
{
|
|
assert(pdp->driScreenPriv->swrast_loader);
|
|
|
|
pdp->driScreenPriv->driver->SwapBuffers(pdp);
|
|
}
|
|
|
|
/** Core interface */
|
|
const __DRIcoreExtension driCoreExtension = {
|
|
.base = { __DRI_CORE, 2 },
|
|
|
|
.createNewScreen = NULL,
|
|
.destroyScreen = driDestroyScreen,
|
|
.getExtensions = driGetExtensions,
|
|
.getConfigAttrib = driGetConfigAttrib,
|
|
.indexConfigAttrib = driIndexConfigAttrib,
|
|
.createNewDrawable = NULL,
|
|
.destroyDrawable = driDestroyDrawable,
|
|
.swapBuffers = driSwapBuffers, /* swrast */
|
|
.createNewContext = driCreateNewContext, /* swrast */
|
|
.copyContext = driCopyContext,
|
|
.destroyContext = driDestroyContext,
|
|
.bindContext = driBindContext,
|
|
.unbindContext = driUnbindContext
|
|
};
|
|
|
|
#if HAVE_DRI2
|
|
|
|
/** DRI2 interface */
|
|
const __DRIdri2Extension driDRI2Extension = {
|
|
.base = { __DRI_DRI2, 4 },
|
|
|
|
.createNewScreen = dri2CreateNewScreen,
|
|
.createNewDrawable = driCreateNewDrawable,
|
|
.createNewContext = driCreateNewContext,
|
|
.getAPIMask = driGetAPIMask,
|
|
.createNewContextForAPI = driCreateNewContextForAPI,
|
|
.allocateBuffer = dri2AllocateBuffer,
|
|
.releaseBuffer = dri2ReleaseBuffer,
|
|
.createContextAttribs = driCreateContextAttribs,
|
|
.createNewScreen2 = driCreateNewScreen2,
|
|
};
|
|
|
|
const __DRIdri2Extension swkmsDRI2Extension = {
|
|
.base = { __DRI_DRI2, 4 },
|
|
|
|
.createNewScreen = swkmsCreateNewScreen,
|
|
.createNewDrawable = driCreateNewDrawable,
|
|
.createNewContext = driCreateNewContext,
|
|
.getAPIMask = driGetAPIMask,
|
|
.createNewContextForAPI = driCreateNewContextForAPI,
|
|
.allocateBuffer = dri2AllocateBuffer,
|
|
.releaseBuffer = dri2ReleaseBuffer,
|
|
.createContextAttribs = driCreateContextAttribs,
|
|
.createNewScreen2 = driCreateNewScreen2,
|
|
};
|
|
|
|
#endif
|
|
|
|
const __DRIswrastExtension driSWRastExtension = {
|
|
.base = { __DRI_SWRAST, 4 },
|
|
|
|
.createNewScreen = driSWRastCreateNewScreen,
|
|
.createNewDrawable = driCreateNewDrawable,
|
|
.createNewContextForAPI = driCreateNewContextForAPI,
|
|
.createContextAttribs = driCreateContextAttribs,
|
|
.createNewScreen2 = driSWRastCreateNewScreen2,
|
|
};
|
|
|
|
const __DRI2configQueryExtension dri2ConfigQueryExtension = {
|
|
.base = { __DRI2_CONFIG_QUERY, 2 },
|
|
|
|
.configQueryb = dri2ConfigQueryb,
|
|
.configQueryi = dri2ConfigQueryi,
|
|
.configQueryf = dri2ConfigQueryf,
|
|
.configQuerys = dri2ConfigQuerys,
|
|
};
|
|
|
|
const __DRI2flushControlExtension dri2FlushControlExtension = {
|
|
.base = { __DRI2_FLUSH_CONTROL, 1 }
|
|
};
|
|
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/*
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* Note: the first match is returned, which is important for formats like
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* __DRI_IMAGE_FORMAT_R8 which maps to both MESA_FORMAT_{R,L}_UNORM8
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*/
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static const struct {
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uint32_t image_format;
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mesa_format mesa_format;
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GLenum internal_format;
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} format_mapping[] = {
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{
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.image_format = __DRI_IMAGE_FORMAT_RGB565,
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.mesa_format = MESA_FORMAT_B5G6R5_UNORM,
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.internal_format = GL_RGB565,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_ARGB1555,
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.mesa_format = MESA_FORMAT_B5G5R5A1_UNORM,
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.internal_format = GL_RGB5_A1,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_XRGB8888,
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.mesa_format = MESA_FORMAT_B8G8R8X8_UNORM,
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.internal_format = GL_RGB8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_ABGR16161616F,
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.mesa_format = MESA_FORMAT_RGBA_FLOAT16,
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.internal_format = GL_RGBA16F,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_XBGR16161616F,
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.mesa_format = MESA_FORMAT_RGBX_FLOAT16,
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.internal_format = GL_RGBA16F,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_ABGR16161616,
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.mesa_format = MESA_FORMAT_RGBA_UNORM16,
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.internal_format = GL_RGBA16,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_XBGR16161616,
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.mesa_format = MESA_FORMAT_RGBX_UNORM16,
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.internal_format = GL_RGBA16,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_ARGB2101010,
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.mesa_format = MESA_FORMAT_B10G10R10A2_UNORM,
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.internal_format = GL_RGB10_A2,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_XRGB2101010,
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.mesa_format = MESA_FORMAT_B10G10R10X2_UNORM,
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.internal_format = GL_RGB10_A2,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_ABGR2101010,
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.mesa_format = MESA_FORMAT_R10G10B10A2_UNORM,
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.internal_format = GL_RGB10_A2,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_XBGR2101010,
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.mesa_format = MESA_FORMAT_R10G10B10X2_UNORM,
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.internal_format = GL_RGB10_A2,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_ARGB8888,
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.mesa_format = MESA_FORMAT_B8G8R8A8_UNORM,
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.internal_format = GL_RGBA8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_ABGR8888,
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.mesa_format = MESA_FORMAT_R8G8B8A8_UNORM,
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.internal_format = GL_RGBA8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_XBGR8888,
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.mesa_format = MESA_FORMAT_R8G8B8X8_UNORM,
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.internal_format = GL_RGB8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_R8,
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.mesa_format = MESA_FORMAT_R_UNORM8,
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.internal_format = GL_R8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_R8,
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.mesa_format = MESA_FORMAT_L_UNORM8,
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.internal_format = GL_R8,
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},
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#if UTIL_ARCH_LITTLE_ENDIAN
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{
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.image_format = __DRI_IMAGE_FORMAT_GR88,
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.mesa_format = MESA_FORMAT_RG_UNORM8,
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.internal_format = GL_RG8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_GR88,
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.mesa_format = MESA_FORMAT_LA_UNORM8,
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.internal_format = GL_RG8,
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},
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#endif
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{
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.image_format = __DRI_IMAGE_FORMAT_SABGR8,
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.mesa_format = MESA_FORMAT_R8G8B8A8_SRGB,
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.internal_format = GL_SRGB8_ALPHA8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_SARGB8,
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.mesa_format = MESA_FORMAT_B8G8R8A8_SRGB,
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.internal_format = GL_SRGB8_ALPHA8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_SXRGB8,
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.mesa_format = MESA_FORMAT_B8G8R8X8_SRGB,
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.internal_format = GL_SRGB8_ALPHA8,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_R16,
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.mesa_format = MESA_FORMAT_R_UNORM16,
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.internal_format = GL_R16,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_R16,
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.mesa_format = MESA_FORMAT_L_UNORM16,
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.internal_format = GL_R16,
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},
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#if UTIL_ARCH_LITTLE_ENDIAN
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{
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.image_format = __DRI_IMAGE_FORMAT_GR1616,
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.mesa_format = MESA_FORMAT_RG_UNORM16,
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.internal_format = GL_RG16,
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},
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{
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.image_format = __DRI_IMAGE_FORMAT_GR1616,
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.mesa_format = MESA_FORMAT_LA_UNORM16,
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.internal_format = GL_RG16,
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},
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#endif
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};
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uint32_t
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driGLFormatToImageFormat(mesa_format format)
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{
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for (size_t i = 0; i < ARRAY_SIZE(format_mapping); i++)
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if (format_mapping[i].mesa_format == format)
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return format_mapping[i].image_format;
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return __DRI_IMAGE_FORMAT_NONE;
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}
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uint32_t
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driGLFormatToSizedInternalGLFormat(mesa_format format)
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{
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for (size_t i = 0; i < ARRAY_SIZE(format_mapping); i++)
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if (format_mapping[i].mesa_format == format)
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return format_mapping[i].internal_format;
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return GL_NONE;
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}
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mesa_format
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driImageFormatToGLFormat(uint32_t image_format)
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{
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for (size_t i = 0; i < ARRAY_SIZE(format_mapping); i++)
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if (format_mapping[i].image_format == image_format)
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return format_mapping[i].mesa_format;
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return MESA_FORMAT_NONE;
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}
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/** Image driver interface */
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const __DRIimageDriverExtension driImageDriverExtension = {
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.base = { __DRI_IMAGE_DRIVER, 1 },
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.createNewScreen2 = driCreateNewScreen2,
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.createNewDrawable = driCreateNewDrawable,
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.getAPIMask = driGetAPIMask,
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.createContextAttribs = driCreateContextAttribs,
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};
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