/* $XFree86: xc/lib/GL/mesa/src/drv/radeon/radeon_context.c,v 1.7 2003/02/08 21:26:45 dawes Exp $ */ /************************************************************************** Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and VA Linux Systems Inc., Fremont, California. 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 on the rights to use, copy, modify, merge, publish, distribute, sub license, 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 and this permission notice (including the next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL ATI, VA LINUX SYSTEMS AND/OR THEIR SUPPLIERS 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. **************************************************************************/ /* * Authors: * Kevin E. Martin * Gareth Hughes * Keith Whitwell * */ #include "radeon_context.h" #include "radeon_ioctl.h" #include "radeon_state.h" #include "radeon_span.h" #include "radeon_tex.h" #include "radeon_swtcl.h" #include "radeon_tcl.h" #include "radeon_vtxfmt.h" #include "radeon_maos.h" #include "swrast/swrast.h" #include "swrast_setup/swrast_setup.h" #include "array_cache/acache.h" #include "tnl/tnl.h" #include "tnl/t_pipeline.h" #include "api_arrayelt.h" #include "context.h" #include "simple_list.h" #include "mem.h" #include "matrix.h" #include "extensions.h" #if defined(USE_X86_ASM) #include "X86/common_x86_asm.h" #endif #define RADEON_DATE "20020611" #ifndef RADEON_DEBUG int RADEON_DEBUG = (0); #endif /* Return the width and height of the given buffer. */ static void radeonGetBufferSize( GLframebuffer *buffer, GLuint *width, GLuint *height ) { GET_CURRENT_CONTEXT(ctx); radeonContextPtr rmesa = RADEON_CONTEXT(ctx); LOCK_HARDWARE( rmesa ); *width = rmesa->dri.drawable->w; *height = rmesa->dri.drawable->h; UNLOCK_HARDWARE( rmesa ); } /* Return various strings for glGetString(). */ static const GLubyte *radeonGetString( GLcontext *ctx, GLenum name ) { radeonContextPtr rmesa = RADEON_CONTEXT(ctx); static char buffer[128]; switch ( name ) { case GL_VENDOR: return (GLubyte *)"Tungsten Graphics, Inc."; case GL_RENDERER: sprintf( buffer, "Mesa DRI Radeon " RADEON_DATE); /* Append any chipset-specific information. None yet. */ /* Append any AGP-specific information. */ switch ( rmesa->radeonScreen->AGPMode ) { case 1: strncat( buffer, " AGP 1x", 7 ); break; case 2: strncat( buffer, " AGP 2x", 7 ); break; case 4: strncat( buffer, " AGP 4x", 7 ); break; } /* Append any CPU-specific information. */ #ifdef USE_X86_ASM if ( _mesa_x86_cpu_features ) { strncat( buffer, " x86", 4 ); } #ifdef USE_MMX_ASM if ( cpu_has_mmx ) { strncat( buffer, "/MMX", 4 ); } #endif #ifdef USE_3DNOW_ASM if ( cpu_has_3dnow ) { strncat( buffer, "/3DNow!", 7 ); } #endif #ifdef USE_SSE_ASM if ( cpu_has_xmm ) { strncat( buffer, "/SSE", 4 ); } #endif #endif if ( rmesa->dri.drmMinor < 3 ) { strncat( buffer, " DRM-COMPAT", 11 ); } if ( !(rmesa->TclFallback & RADEON_TCL_FALLBACK_TCL_DISABLE) ) { strncat( buffer, " TCL", 4 ); } else { strncat( buffer, " NO-TCL", 7 ); } return (GLubyte *)buffer; default: return NULL; } } /* Extension strings exported by the R100 driver. */ static const char * const radeon_extensions[] = { "GL_ARB_multisample", "GL_ARB_multitexture", "GL_ARB_texture_border_clamp", "GL_ARB_texture_compression", "GL_ARB_texture_env_add", "GL_ARB_texture_env_combine", "GL_ARB_texture_env_dot3", "GL_ARB_texture_mirrored_repeat", "GL_EXT_blend_logic_op", "GL_EXT_blend_subtract", /* "GL_EXT_fog_coord", */ "GL_EXT_secondary_color", "GL_EXT_texture_env_add", "GL_EXT_texture_env_combine", "GL_EXT_texture_env_dot3", "GL_EXT_texture_filter_anisotropic", "GL_EXT_texture_lod_bias", "GL_ATI_texture_mirror_once", "GL_IBM_texture_mirrored_repeat", "GL_NV_blend_square", "GL_SGIS_generate_mipmap", "GL_SGIS_texture_border_clamp", NULL }; /* Initialize the extensions supported by this driver. */ static void radeonInitExtensions( GLcontext *ctx ) { unsigned i; _mesa_enable_imaging_extensions( ctx ); for ( i = 0 ; radeon_extensions[i] != NULL ; i++ ) { _mesa_enable_extension( ctx, radeon_extensions[i] ); } } extern const struct gl_pipeline_stage _radeon_render_stage; extern const struct gl_pipeline_stage _radeon_tcl_stage; static const struct gl_pipeline_stage *radeon_pipeline[] = { /* Try and go straight to t&l */ &_radeon_tcl_stage, /* Catch any t&l fallbacks */ &_tnl_vertex_transform_stage, &_tnl_normal_transform_stage, &_tnl_lighting_stage, &_tnl_fog_coordinate_stage, &_tnl_texgen_stage, &_tnl_texture_transform_stage, /* Try again to go to tcl? * - no good for asymmetric-twoside (do with multipass) * - no good for asymmetric-unfilled (do with multipass) * - good for material * - good for texgen * - need to manipulate a bit of state * * - worth it/not worth it? */ /* Else do them here. */ &_radeon_render_stage, &_tnl_render_stage, /* FALLBACK: */ 0, }; /* Initialize the driver's misc functions. */ static void radeonInitDriverFuncs( GLcontext *ctx ) { ctx->Driver.GetBufferSize = radeonGetBufferSize; ctx->Driver.ResizeBuffers = _swrast_alloc_buffers; ctx->Driver.GetString = radeonGetString; ctx->Driver.Error = NULL; ctx->Driver.DrawPixels = NULL; ctx->Driver.Bitmap = NULL; } /* Create the device specific context. */ static GLboolean radeonCreateContext( Display *dpy, const __GLcontextModes *glVisual, __DRIcontextPrivate *driContextPriv, void *sharedContextPrivate) { __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv; radeonScreenPtr radeonScreen = (radeonScreenPtr)(sPriv->private); radeonContextPtr rmesa; GLcontext *ctx, *shareCtx; int i; assert(dpy); assert(glVisual); assert(driContextPriv); assert(radeonScreen); /* Allocate the Radeon context */ rmesa = (radeonContextPtr) CALLOC( sizeof(*rmesa) ); if ( !rmesa ) return GL_FALSE; /* Allocate the Mesa context */ if (sharedContextPrivate) shareCtx = ((radeonContextPtr) sharedContextPrivate)->glCtx; else shareCtx = NULL; rmesa->glCtx = _mesa_create_context(glVisual, shareCtx, rmesa, GL_TRUE); if (!rmesa->glCtx) { FREE(rmesa); return GL_FALSE; } driContextPriv->driverPrivate = rmesa; /* Init radeon context data */ rmesa->dri.display = dpy; rmesa->dri.context = driContextPriv; rmesa->dri.screen = sPriv; rmesa->dri.drawable = NULL; /* Set by XMesaMakeCurrent */ rmesa->dri.hwContext = driContextPriv->hHWContext; rmesa->dri.hwLock = &sPriv->pSAREA->lock; rmesa->dri.fd = sPriv->fd; /* If we don't have 1.3, fallback to the 1.1 interfaces. */ if (getenv("RADEON_COMPAT") || sPriv->drmMinor < 3 ) rmesa->dri.drmMinor = 1; else rmesa->dri.drmMinor = sPriv->drmMinor; rmesa->radeonScreen = radeonScreen; rmesa->sarea = (RADEONSAREAPrivPtr)((GLubyte *)sPriv->pSAREA + radeonScreen->sarea_priv_offset); rmesa->dma.buf0_address = rmesa->radeonScreen->buffers->list[0].address; for ( i = 0 ; i < radeonScreen->numTexHeaps ; i++ ) { make_empty_list( &rmesa->texture.objects[i] ); rmesa->texture.heap[i] = mmInit( 0, radeonScreen->texSize[i] ); rmesa->texture.age[i] = -1; } rmesa->texture.numHeaps = radeonScreen->numTexHeaps; make_empty_list( &rmesa->texture.swapped ); rmesa->swtcl.RenderIndex = ~0; rmesa->lost_context = 1; /* KW: Set the maximum texture size small enough that we can * guarentee that both texture units can bind a maximal texture * and have them both in on-card memory at once. * Test for 2 textures * 4 bytes/texel * size * size. */ ctx = rmesa->glCtx; if (radeonScreen->texSize[RADEON_CARD_HEAP] >= 2 * 4 * 2048 * 2048) { ctx->Const.MaxTextureLevels = 12; /* 2048x2048 */ } else if (radeonScreen->texSize[RADEON_CARD_HEAP] >= 2 * 4 * 1024 * 1024) { ctx->Const.MaxTextureLevels = 11; /* 1024x1024 */ } else if (radeonScreen->texSize[RADEON_CARD_HEAP] >= 2 * 4 * 512 * 512) { ctx->Const.MaxTextureLevels = 10; /* 512x512 */ } else { ctx->Const.MaxTextureLevels = 9; /* 256x256 */ } ctx->Const.MaxTextureUnits = 2; ctx->Const.MaxTextureMaxAnisotropy = 16.0; /* No wide points. */ ctx->Const.MinPointSize = 1.0; ctx->Const.MinPointSizeAA = 1.0; ctx->Const.MaxPointSize = 1.0; ctx->Const.MaxPointSizeAA = 1.0; ctx->Const.MinLineWidth = 1.0; ctx->Const.MinLineWidthAA = 1.0; ctx->Const.MaxLineWidth = 10.0; ctx->Const.MaxLineWidthAA = 10.0; ctx->Const.LineWidthGranularity = 0.0625; /* Set maxlocksize (and hence vb size) small enough to avoid * fallbacks in radeon_tcl.c. ie. guarentee that all vertices can * fit in a single dma buffer for indexed rendering of quad strips, * etc. */ ctx->Const.MaxArrayLockSize = MIN2( ctx->Const.MaxArrayLockSize, RADEON_BUFFER_SIZE / RADEON_MAX_TCL_VERTSIZE ); if (getenv("LIBGL_PERFORMANCE_BOXES")) rmesa->boxes = 1; else rmesa->boxes = 0; /* Initialize the software rasterizer and helper modules. */ _swrast_CreateContext( ctx ); _ac_CreateContext( ctx ); _tnl_CreateContext( ctx ); _swsetup_CreateContext( ctx ); _ae_create_context( ctx ); /* Install the customized pipeline: */ _tnl_destroy_pipeline( ctx ); _tnl_install_pipeline( ctx, radeon_pipeline ); /* Try and keep materials and vertices separate: */ _tnl_isolate_materials( ctx, GL_TRUE ); /* _mesa_allow_light_in_model( ctx, GL_FALSE ); */ /* Configure swrast to match hardware characteristics: */ _swrast_allow_pixel_fog( ctx, GL_FALSE ); _swrast_allow_vertex_fog( ctx, GL_TRUE ); _math_matrix_ctr( &rmesa->TexGenMatrix[0] ); _math_matrix_ctr( &rmesa->TexGenMatrix[1] ); _math_matrix_ctr( &rmesa->tmpmat ); _math_matrix_set_identity( &rmesa->TexGenMatrix[0] ); _math_matrix_set_identity( &rmesa->TexGenMatrix[1] ); _math_matrix_set_identity( &rmesa->tmpmat ); radeonInitExtensions( ctx ); radeonInitDriverFuncs( ctx ); radeonInitIoctlFuncs( ctx ); radeonInitStateFuncs( ctx ); radeonInitSpanFuncs( ctx ); radeonInitTextureFuncs( ctx ); radeonInitState( rmesa ); radeonInitSwtcl( ctx ); rmesa->do_irqs = (rmesa->radeonScreen->irq && !getenv("RADEON_NO_IRQS")); rmesa->irqsEmitted = 0; rmesa->iw.irq_seq = -1; rmesa->do_usleeps = !getenv("RADEON_NO_USLEEPS"); #if DO_DEBUG if (getenv("RADEON_DEBUG_FALLBACKS")) RADEON_DEBUG |= DEBUG_FALLBACKS; if (getenv("RADEON_DEBUG_TEXTURE")) RADEON_DEBUG |= DEBUG_TEXTURE; if (getenv("RADEON_DEBUG_IOCTL")) RADEON_DEBUG |= DEBUG_IOCTL; if (getenv("RADEON_DEBUG_PRIMS")) RADEON_DEBUG |= DEBUG_PRIMS; if (getenv("RADEON_DEBUG_VERTS")) RADEON_DEBUG |= DEBUG_VERTS; if (getenv("RADEON_DEBUG_STATE")) RADEON_DEBUG |= DEBUG_STATE; if (getenv("RADEON_DEBUG_CODEGEN")) RADEON_DEBUG |= DEBUG_CODEGEN; if (getenv("RADEON_DEBUG_VTXFMT")) RADEON_DEBUG |= DEBUG_VFMT; if (getenv("RADEON_DEBUG_VERBOSE")) RADEON_DEBUG |= DEBUG_VERBOSE; if (getenv("RADEON_DEBUG_DRI")) RADEON_DEBUG |= DEBUG_DRI; if (getenv("RADEON_DEBUG_DMA")) RADEON_DEBUG |= DEBUG_DMA; if (getenv("RADEON_DEBUG_SANITY")) RADEON_DEBUG |= DEBUG_SANITY; if (getenv("RADEON_DEBUG")) { const char *debug = getenv("RADEON_DEBUG"); if (strstr(debug, "fall")) RADEON_DEBUG |= DEBUG_FALLBACKS; if (strstr(debug, "tex")) RADEON_DEBUG |= DEBUG_TEXTURE; if (strstr(debug, "ioctl")) RADEON_DEBUG |= DEBUG_IOCTL; if (strstr(debug, "prim")) RADEON_DEBUG |= DEBUG_PRIMS; if (strstr(debug, "vert")) RADEON_DEBUG |= DEBUG_VERTS; if (strstr(debug, "state")) RADEON_DEBUG |= DEBUG_STATE; if (strstr(debug, "code")) RADEON_DEBUG |= DEBUG_CODEGEN; if (strstr(debug, "vfmt") || strstr(debug, "vtxf")) RADEON_DEBUG |= DEBUG_VFMT; if (strstr(debug, "verb")) RADEON_DEBUG |= DEBUG_VERBOSE; if (strstr(debug, "dri")) RADEON_DEBUG |= DEBUG_DRI; if (strstr(debug, "dma")) RADEON_DEBUG |= DEBUG_DMA; if (strstr(debug, "san")) RADEON_DEBUG |= DEBUG_SANITY; } #endif if (getenv("RADEON_NO_RAST")) { fprintf(stderr, "disabling 3D acceleration\n"); FALLBACK(rmesa, RADEON_FALLBACK_DISABLE, 1); } else if (getenv("RADEON_TCL_FORCE_ENABLE")) { fprintf(stderr, "Enabling TCL support... this will probably crash\n"); fprintf(stderr, " your card if it isn't capable of TCL!\n"); rmesa->radeonScreen->chipset |= RADEON_CHIPSET_TCL; } else if (getenv("RADEON_TCL_FORCE_DISABLE") || rmesa->dri.drmMinor < 3 || !(rmesa->radeonScreen->chipset & RADEON_CHIPSET_TCL)) { rmesa->radeonScreen->chipset &= ~RADEON_CHIPSET_TCL; fprintf(stderr, "disabling TCL support\n"); TCL_FALLBACK(rmesa->glCtx, RADEON_TCL_FALLBACK_TCL_DISABLE, 1); } if (rmesa->radeonScreen->chipset & RADEON_CHIPSET_TCL) { if (!getenv("RADEON_NO_VTXFMT")) radeonVtxfmtInit( ctx ); _tnl_need_dlist_norm_lengths( ctx, GL_FALSE ); } return GL_TRUE; } /* Destroy the device specific context. */ /* Destroy the Mesa and driver specific context data. */ static void radeonDestroyContext( __DRIcontextPrivate *driContextPriv ) { GET_CURRENT_CONTEXT(ctx); radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate; radeonContextPtr current = ctx ? RADEON_CONTEXT(ctx) : NULL; /* check if we're deleting the currently bound context */ if (rmesa == current) { RADEON_FIREVERTICES( rmesa ); _mesa_make_current2(NULL, NULL, NULL); } /* Free radeon context resources */ assert(rmesa); /* should never be null */ if ( rmesa ) { if (rmesa->glCtx->Shared->RefCount == 1) { /* This share group is about to go away, free our private * texture object data. */ radeonTexObjPtr t, next_t; int i; for ( i = 0 ; i < rmesa->texture.numHeaps ; i++ ) { foreach_s ( t, next_t, &rmesa->texture.objects[i] ) { radeonDestroyTexObj( rmesa, t ); } mmDestroy( rmesa->texture.heap[i] ); rmesa->texture.heap[i] = NULL; } foreach_s ( t, next_t, &rmesa->texture.swapped ) { radeonDestroyTexObj( rmesa, t ); } } _swsetup_DestroyContext( rmesa->glCtx ); _tnl_DestroyContext( rmesa->glCtx ); _ac_DestroyContext( rmesa->glCtx ); _swrast_DestroyContext( rmesa->glCtx ); radeonDestroySwtcl( rmesa->glCtx ); radeonReleaseArrays( rmesa->glCtx, ~0 ); if (rmesa->dma.current.buf) { radeonReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ ); radeonFlushCmdBuf( rmesa, __FUNCTION__ ); } if (!rmesa->TclFallback & RADEON_TCL_FALLBACK_TCL_DISABLE) if (!getenv("RADEON_NO_VTXFMT")) radeonVtxfmtDestroy( rmesa->glCtx ); /* free the Mesa context */ rmesa->glCtx->DriverCtx = NULL; _mesa_destroy_context( rmesa->glCtx ); if (rmesa->state.scissor.pClipRects) { FREE(rmesa->state.scissor.pClipRects); rmesa->state.scissor.pClipRects = 0; } FREE( rmesa ); } #if 0 /* Use this to force shared object profiling. */ glx_fini_prof(); #endif } /* Initialize the driver specific screen private data. */ static GLboolean radeonInitDriver( __DRIscreenPrivate *sPriv ) { sPriv->private = (void *) radeonCreateScreen( sPriv ); if ( !sPriv->private ) { radeonDestroyScreen( sPriv ); return GL_FALSE; } return GL_TRUE; } /* Create and initialize the Mesa and driver specific pixmap buffer * data. */ static GLboolean radeonCreateBuffer( Display *dpy, __DRIscreenPrivate *driScrnPriv, __DRIdrawablePrivate *driDrawPriv, const __GLcontextModes *mesaVis, GLboolean isPixmap ) { if (isPixmap) { return GL_FALSE; /* not implemented */ } else { const GLboolean swDepth = GL_FALSE; const GLboolean swAlpha = GL_FALSE; const GLboolean swAccum = mesaVis->accumRedBits > 0; const GLboolean swStencil = mesaVis->stencilBits > 0 && mesaVis->depthBits != 24; driDrawPriv->driverPrivate = (void *) _mesa_create_framebuffer( mesaVis, swDepth, swStencil, swAccum, swAlpha ); return (driDrawPriv->driverPrivate != NULL); } } static void radeonDestroyBuffer(__DRIdrawablePrivate *driDrawPriv) { _mesa_destroy_framebuffer((GLframebuffer *) (driDrawPriv->driverPrivate)); } static void radeonSwapBuffers(Display *dpy, void *drawablePrivate) { __DRIdrawablePrivate *dPriv = (__DRIdrawablePrivate *) drawablePrivate; (void) dpy; if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) { radeonContextPtr rmesa; GLcontext *ctx; rmesa = (radeonContextPtr) dPriv->driContextPriv->driverPrivate; ctx = rmesa->glCtx; if (ctx->Visual.doubleBufferMode) { _mesa_swapbuffers( ctx ); /* flush pending rendering comands */ if ( rmesa->doPageFlip ) { radeonPageFlip( dPriv ); } else { radeonCopyBuffer( dPriv ); } } } else { /* XXX this shouldn't be an error but we can't handle it for now */ _mesa_problem(NULL, "radeonSwapBuffers: drawable has no context!\n"); } } /* Force the context `c' to be the current context and associate with it * buffer `b'. */ static GLboolean radeonMakeCurrent( __DRIcontextPrivate *driContextPriv, __DRIdrawablePrivate *driDrawPriv, __DRIdrawablePrivate *driReadPriv ) { if ( driContextPriv ) { radeonContextPtr newRadeonCtx = (radeonContextPtr) driContextPriv->driverPrivate; if (RADEON_DEBUG & DEBUG_DRI) fprintf(stderr, "%s ctx %p\n", __FUNCTION__, newRadeonCtx->glCtx); if ( newRadeonCtx->dri.drawable != driDrawPriv ) { newRadeonCtx->dri.drawable = driDrawPriv; radeonUpdateWindow( newRadeonCtx->glCtx ); radeonUpdateViewportOffset( newRadeonCtx->glCtx ); } _mesa_make_current2( newRadeonCtx->glCtx, (GLframebuffer *) driDrawPriv->driverPrivate, (GLframebuffer *) driReadPriv->driverPrivate ); if ( !newRadeonCtx->glCtx->Viewport.Width ) { _mesa_set_viewport( newRadeonCtx->glCtx, 0, 0, driDrawPriv->w, driDrawPriv->h ); } if (newRadeonCtx->vb.enabled) radeonVtxfmtMakeCurrent( newRadeonCtx->glCtx ); } else { if (RADEON_DEBUG & DEBUG_DRI) fprintf(stderr, "%s ctx %p\n", __FUNCTION__, NULL); _mesa_make_current( 0, 0 ); } if (RADEON_DEBUG & DEBUG_DRI) fprintf(stderr, "End %s\n", __FUNCTION__); return GL_TRUE; } /* Force the context `c' to be unbound from its buffer. */ static GLboolean radeonUnbindContext( __DRIcontextPrivate *driContextPriv ) { radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate; if (RADEON_DEBUG & DEBUG_DRI) fprintf(stderr, "%s ctx %p\n", __FUNCTION__, rmesa->glCtx); radeonVtxfmtUnbindContext( rmesa->glCtx ); return GL_TRUE; } /* Fullscreen mode isn't used for much -- could be a way to shrink * front/back buffers & get more texture memory if the client has * changed the video resolution. * * Pageflipping is now done automatically whenever there is a single * 3d client. */ static GLboolean radeonOpenCloseFullScreen( __DRIcontextPrivate *driContextPriv ) { return GL_TRUE; } /* This function is called by libGL.so as soon as libGL.so is loaded. * This is where we'd register new extension functions with the dispatcher. */ void __driRegisterExtensions( void ) { } static struct __DriverAPIRec radeonAPI = { radeonInitDriver, radeonDestroyScreen, radeonCreateContext, radeonDestroyContext, radeonCreateBuffer, radeonDestroyBuffer, radeonSwapBuffers, radeonMakeCurrent, radeonUnbindContext, radeonOpenCloseFullScreen, radeonOpenCloseFullScreen }; /* * This is the bootstrap function for the driver. * The __driCreateScreen name is the symbol that libGL.so fetches. * Return: pointer to a __DRIscreenPrivate. */ void *__driCreateScreen(Display *dpy, int scrn, __DRIscreen *psc, int numConfigs, __GLXvisualConfig *config) { __DRIscreenPrivate *psp; psp = __driUtilCreateScreen(dpy, scrn, psc, numConfigs, config, &radeonAPI); return (void *) psp; }