/************************************************************************** * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * 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, 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 TUNGSTEN GRAPHICS AND/OR ITS 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. * **************************************************************************/ #include "glheader.h" #include "context.h" #include "matrix.h" #include "simple_list.h" #include "extensions.h" #include "framebuffer.h" #include "imports.h" #include "points.h" #include "swrast/swrast.h" #include "swrast_setup/swrast_setup.h" #include "tnl/tnl.h" #include "tnl/t_pipeline.h" #include "tnl/t_vertex.h" #include "drivers/common/driverfuncs.h" #include "intel_screen.h" #include "i830_dri.h" #include "intel_buffers.h" #include "intel_tex.h" #include "intel_span.h" #include "intel_tris.h" #include "intel_ioctl.h" #include "intel_batchbuffer.h" #include "intel_blit.h" #include "intel_pixel.h" #include "intel_regions.h" #include "intel_buffer_objects.h" #include "intel_fbo.h" #include "i915_disasm.h" #include "drirenderbuffer.h" #include "vblank.h" #include "utils.h" #include "xmlpool.h" /* for symbolic values of enum-type options */ #ifndef INTEL_DEBUG int INTEL_DEBUG = (0); #endif #define need_GL_ARB_multisample #define need_GL_ARB_point_parameters #define need_GL_ARB_texture_compression #define need_GL_ARB_vertex_buffer_object #define need_GL_ARB_vertex_program #define need_GL_ARB_window_pos #define need_GL_EXT_blend_color #define need_GL_EXT_blend_equation_separate #define need_GL_EXT_blend_func_separate #define need_GL_EXT_blend_minmax #define need_GL_EXT_cull_vertex #define need_GL_EXT_fog_coord #define need_GL_EXT_framebuffer_object #define need_GL_EXT_multi_draw_arrays #define need_GL_EXT_secondary_color #define need_GL_NV_vertex_program #include "extension_helper.h" #define DRIVER_DATE "20061102" _glthread_Mutex lockMutex; static GLboolean lockMutexInit = GL_FALSE; static const GLubyte * intelGetString(GLcontext * ctx, GLenum name) { const char *chipset; static char buffer[128]; switch (name) { case GL_VENDOR: return (GLubyte *) "Tungsten Graphics, Inc"; break; case GL_RENDERER: switch (intel_context(ctx)->intelScreen->deviceID) { case PCI_CHIP_845_G: chipset = "Intel(R) 845G"; break; case PCI_CHIP_I830_M: chipset = "Intel(R) 830M"; break; case PCI_CHIP_I855_GM: chipset = "Intel(R) 852GM/855GM"; break; case PCI_CHIP_I865_G: chipset = "Intel(R) 865G"; break; case PCI_CHIP_I915_G: chipset = "Intel(R) 915G"; break; case PCI_CHIP_I915_GM: chipset = "Intel(R) 915GM"; break; case PCI_CHIP_I945_G: chipset = "Intel(R) 945G"; break; case PCI_CHIP_I945_GM: chipset = "Intel(R) 945GM"; break; case PCI_CHIP_I945_GME: chipset = "Intel(R) 945GME"; break; case PCI_CHIP_G33_G: chipset = "Intel(R) G33"; break; case PCI_CHIP_Q35_G: chipset = "Intel(R) Q35"; break; case PCI_CHIP_Q33_G: chipset = "Intel(R) Q33"; break; default: chipset = "Unknown Intel Chipset"; break; } (void) driGetRendererString(buffer, chipset, DRIVER_DATE, 0); return (GLubyte *) buffer; default: return NULL; } } /** * Extension strings exported by the intel driver. * * \note * It appears that ARB_texture_env_crossbar has "disappeared" compared to the * old i830-specific driver. */ const struct dri_extension card_extensions[] = { {"GL_ARB_multisample", GL_ARB_multisample_functions}, {"GL_ARB_multitexture", NULL}, {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions}, {"GL_ARB_texture_border_clamp", NULL}, {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions}, {"GL_ARB_texture_cube_map", NULL}, {"GL_ARB_texture_env_add", NULL}, {"GL_ARB_texture_env_combine", NULL}, {"GL_ARB_texture_env_dot3", NULL}, {"GL_ARB_texture_mirrored_repeat", NULL}, {"GL_ARB_texture_rectangle", NULL}, {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions}, {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions}, {"GL_ARB_window_pos", GL_ARB_window_pos_functions}, {"GL_EXT_blend_color", GL_EXT_blend_color_functions}, {"GL_EXT_blend_equation_separate", GL_EXT_blend_equation_separate_functions}, {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions}, {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions}, {"GL_EXT_blend_subtract", NULL}, {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions}, {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions}, {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions}, #if 1 /* XXX FBO temporary? */ {"GL_EXT_packed_depth_stencil", NULL}, #endif {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions}, {"GL_EXT_stencil_wrap", NULL}, {"GL_EXT_texture_edge_clamp", NULL}, {"GL_EXT_texture_env_combine", NULL}, {"GL_EXT_texture_env_dot3", NULL}, {"GL_EXT_texture_filter_anisotropic", NULL}, {"GL_EXT_texture_lod_bias", NULL}, {"GL_3DFX_texture_compression_FXT1", NULL}, {"GL_APPLE_client_storage", NULL}, {"GL_MESA_pack_invert", NULL}, {"GL_MESA_ycbcr_texture", NULL}, {"GL_NV_blend_square", NULL}, {"GL_NV_vertex_program", GL_NV_vertex_program_functions}, {"GL_NV_vertex_program1_1", NULL}, /* { "GL_SGIS_generate_mipmap", NULL }, */ {NULL, NULL} }; const struct dri_extension ttm_extensions[] = { {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions}, {"GL_ARB_pixel_buffer_object", NULL}, {NULL, NULL} }; extern const struct tnl_pipeline_stage _intel_render_stage; static const struct tnl_pipeline_stage *intel_pipeline[] = { &_tnl_vertex_transform_stage, &_tnl_vertex_cull_stage, &_tnl_normal_transform_stage, &_tnl_lighting_stage, &_tnl_fog_coordinate_stage, &_tnl_texgen_stage, &_tnl_texture_transform_stage, &_tnl_point_attenuation_stage, &_tnl_vertex_program_stage, #if 1 &_intel_render_stage, /* ADD: unclipped rastersetup-to-dma */ #endif &_tnl_render_stage, 0, }; static const struct dri_debug_control debug_control[] = { {"tex", DEBUG_TEXTURE}, {"state", DEBUG_STATE}, {"ioctl", DEBUG_IOCTL}, {"blit", DEBUG_BLIT}, {"mip", DEBUG_MIPTREE}, {"fall", DEBUG_FALLBACKS}, {"verb", DEBUG_VERBOSE}, {"bat", DEBUG_BATCH}, {"pix", DEBUG_PIXEL}, {"buf", DEBUG_BUFMGR}, {"reg", DEBUG_REGION}, {"fbo", DEBUG_FBO}, {"lock", DEBUG_LOCK}, {NULL, 0} }; static void intelInvalidateState(GLcontext * ctx, GLuint new_state) { _swrast_InvalidateState(ctx, new_state); _swsetup_InvalidateState(ctx, new_state); _vbo_InvalidateState(ctx, new_state); _tnl_InvalidateState(ctx, new_state); _tnl_invalidate_vertex_state(ctx, new_state); intel_context(ctx)->NewGLState |= new_state; } void intelFlush(GLcontext * ctx) { struct intel_context *intel = intel_context(ctx); if (intel->Fallback) _swrast_flush(ctx); INTEL_FIREVERTICES(intel); if (intel->batch->map != intel->batch->ptr) intel_batchbuffer_flush(intel->batch); /* XXX: Need to do an MI_FLUSH here. */ } /** * Check if we need to rotate/warp the front color buffer to the * rotated screen. We generally need to do this when we get a glFlush * or glFinish after drawing to the front color buffer. */ static void intelCheckFrontRotate(GLcontext * ctx) { struct intel_context *intel = intel_context(ctx); if (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT) { intelScreenPrivate *screen = intel->intelScreen; if (screen->current_rotation != 0) { __DRIdrawablePrivate *dPriv = intel->driDrawable; intelRotateWindow(intel, dPriv, BUFFER_BIT_FRONT_LEFT); } } } /** * Called via glFlush. */ static void intelglFlush(GLcontext * ctx) { intelFlush(ctx); intelCheckFrontRotate(ctx); } void intelFinish(GLcontext * ctx) { struct intel_context *intel = intel_context(ctx); intelFlush(ctx); if (intel->batch->last_fence) { dri_fence_wait(intel->batch->last_fence); dri_fence_unreference(intel->batch->last_fence); intel->batch->last_fence = NULL; } intelCheckFrontRotate(ctx); } void intelInitDriverFunctions(struct dd_function_table *functions) { _mesa_init_driver_functions(functions); functions->Flush = intelglFlush; functions->Finish = intelFinish; functions->GetString = intelGetString; functions->UpdateState = intelInvalidateState; functions->CopyColorTable = _swrast_CopyColorTable; functions->CopyColorSubTable = _swrast_CopyColorSubTable; functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D; functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D; intelInitTextureFuncs(functions); intelInitPixelFuncs(functions); intelInitStateFuncs(functions); intelInitBufferFuncs(functions); } GLboolean intelInitContext(struct intel_context *intel, const __GLcontextModes * mesaVis, __DRIcontextPrivate * driContextPriv, void *sharedContextPrivate, struct dd_function_table *functions) { GLcontext *ctx = &intel->ctx; GLcontext *shareCtx = (GLcontext *) sharedContextPrivate; __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv; intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private; drmI830Sarea *saPriv = (drmI830Sarea *) (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset); int fthrottle_mode; if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx, functions, (void *) intel)) return GL_FALSE; driContextPriv->driverPrivate = intel; intel->intelScreen = intelScreen; intel->driScreen = sPriv; intel->sarea = saPriv; intel->width = intelScreen->width; intel->height = intelScreen->height; intel->current_rotation = intelScreen->current_rotation; if (!lockMutexInit) { lockMutexInit = GL_TRUE; _glthread_INIT_MUTEX(lockMutex); } driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache, intel->driScreen->myNum, "i915"); ctx->Const.MaxTextureMaxAnisotropy = 2.0; /* This doesn't yet catch all non-conformant rendering, but it's a * start. */ if (getenv("INTEL_STRICT_CONFORMANCE")) { intel->strict_conformance = 1; } ctx->Const.MinLineWidth = 1.0; ctx->Const.MinLineWidthAA = 1.0; ctx->Const.MaxLineWidth = 3.0; ctx->Const.MaxLineWidthAA = 3.0; ctx->Const.LineWidthGranularity = 1.0; ctx->Const.MinPointSize = 1.0; ctx->Const.MinPointSizeAA = 1.0; ctx->Const.MaxPointSize = 255.0; ctx->Const.MaxPointSizeAA = 3.0; ctx->Const.PointSizeGranularity = 1.0; /* reinitialize the context point state. * It depend on constants in __GLcontextRec::Const */ _mesa_init_point(ctx); ctx->Const.MaxColorAttachments = 4; /* XXX FBO: review this */ /* Initialize the software rasterizer and helper modules. */ _swrast_CreateContext(ctx); _vbo_CreateContext(ctx); _tnl_CreateContext(ctx); _swsetup_CreateContext(ctx); /* Install the customized pipeline: */ _tnl_destroy_pipeline(ctx); _tnl_install_pipeline(ctx, intel_pipeline); /* Configure swrast to match hardware characteristics: */ _swrast_allow_pixel_fog(ctx, GL_FALSE); _swrast_allow_vertex_fog(ctx, GL_TRUE); /* Dri stuff */ intel->hHWContext = driContextPriv->hHWContext; intel->driFd = sPriv->fd; intel->driHwLock = (drmLock *) & sPriv->pSAREA->lock; intel->hw_stipple = 1; /* XXX FBO: this doesn't seem to be used anywhere */ switch (mesaVis->depthBits) { case 0: /* what to do in this case? */ case 16: intel->polygon_offset_scale = 1.0 / 0xffff; break; case 24: intel->polygon_offset_scale = 2.0 / 0xffffff; /* req'd to pass glean */ break; default: assert(0); break; } /* Initialize swrast, tnl driver tables: */ intelInitSpanFuncs(ctx); intelInitTriFuncs(ctx); intel->RenderIndex = ~0; fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode"); intel->irqsEmitted = 0; intel->do_irqs = (intel->intelScreen->irq_active && fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS); intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS); _math_matrix_ctr(&intel->ViewportMatrix); /* Disable imaging extension until convolution is working in * teximage paths: */ driInitExtensions(ctx, card_extensions, /* GL_TRUE, */ GL_FALSE); if (intelScreen->ttm) driInitExtensions(ctx, ttm_extensions, GL_FALSE); intel->batch = intel_batchbuffer_alloc(intel); intel->last_swap_fence = NULL; intel->first_swap_fence = NULL; intel_bufferobj_init(intel); intel_fbo_init(intel); if (intel->ctx.Mesa_DXTn) { _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); _mesa_enable_extension(ctx, "GL_S3_s3tc"); } else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) { _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); } intel->prim.primitive = ~0; #if DO_DEBUG INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control); #endif if (getenv("INTEL_NO_RAST")) { fprintf(stderr, "disabling 3D rasterization\n"); FALLBACK(intel, INTEL_FALLBACK_USER, 1); } return GL_TRUE; } void intelDestroyContext(__DRIcontextPrivate * driContextPriv) { struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate; assert(intel); /* should never be null */ if (intel) { GLboolean release_texture_heaps; INTEL_FIREVERTICES(intel); intel->vtbl.destroy(intel); release_texture_heaps = (intel->ctx.Shared->RefCount == 1); _swsetup_DestroyContext(&intel->ctx); _tnl_DestroyContext(&intel->ctx); _vbo_DestroyContext(&intel->ctx); _swrast_DestroyContext(&intel->ctx); intel->Fallback = 0; /* don't call _swrast_Flush later */ intel_batchbuffer_free(intel->batch); if (intel->last_swap_fence) { dri_fence_wait(intel->last_swap_fence); dri_fence_unreference(intel->last_swap_fence); intel->last_swap_fence = NULL; } if (intel->first_swap_fence) { dri_fence_wait(intel->first_swap_fence); dri_fence_unreference(intel->first_swap_fence); intel->first_swap_fence = NULL; } if (release_texture_heaps) { /* This share group is about to go away, free our private * texture object data. */ if (INTEL_DEBUG & DEBUG_TEXTURE) fprintf(stderr, "do something to free texture heaps\n"); } /* free the Mesa context */ _mesa_free_context_data(&intel->ctx); } } GLboolean intelUnbindContext(__DRIcontextPrivate * driContextPriv) { return GL_TRUE; } GLboolean intelMakeCurrent(__DRIcontextPrivate * driContextPriv, __DRIdrawablePrivate * driDrawPriv, __DRIdrawablePrivate * driReadPriv) { if (driContextPriv) { struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate; struct intel_framebuffer *intel_fb = (struct intel_framebuffer *) driDrawPriv->driverPrivate; GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate; /* XXX FBO temporary fix-ups! */ /* if the renderbuffers don't have regions, init them from the context */ { struct intel_renderbuffer *irbDepth = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH); struct intel_renderbuffer *irbStencil = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL); if (intel_fb->color_rb[0] && !intel_fb->color_rb[0]->region) { intel_region_reference(&intel_fb->color_rb[0]->region, intel->intelScreen->front_region); } if (intel_fb->color_rb[1] && !intel_fb->color_rb[1]->region) { intel_region_reference(&intel_fb->color_rb[1]->region, intel->intelScreen->back_region); } if (intel_fb->color_rb[2] && !intel_fb->color_rb[2]->region) { intel_region_reference(&intel_fb->color_rb[2]->region, intel->intelScreen->third_region); } if (irbDepth && !irbDepth->region) { intel_region_reference(&irbDepth->region, intel->intelScreen->depth_region); } if (irbStencil && !irbStencil->region) { intel_region_reference(&irbStencil->region, intel->intelScreen->depth_region); } } /* set GLframebuffer size to match window, if needed */ driUpdateFramebufferSize(&intel->ctx, driDrawPriv); if (driReadPriv != driDrawPriv) { driUpdateFramebufferSize(&intel->ctx, driReadPriv); } _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb); /* The drawbuffer won't always be updated by _mesa_make_current: */ if (intel->ctx.DrawBuffer == &intel_fb->Base) { if (intel->driDrawable != driDrawPriv) { intel_fb->vblank_flags = (intel->intelScreen->irq_active != 0) ? driGetDefaultVBlankFlags(&intel->optionCache) : VBLANK_FLAG_NO_IRQ; (*dri_interface->getUST) (&intel_fb->swap_ust); driDrawableInitVBlank(driDrawPriv, intel_fb->vblank_flags, &intel_fb->vbl_seq); intel->driDrawable = driDrawPriv; intelWindowMoved(intel); } intel_draw_buffer(&intel->ctx, &intel_fb->Base); } } else { _mesa_make_current(NULL, NULL, NULL); } return GL_TRUE; } static void intelContendedLock(struct intel_context *intel, GLuint flags) { __DRIdrawablePrivate *dPriv = intel->driDrawable; __DRIscreenPrivate *sPriv = intel->driScreen; intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private; drmI830Sarea *sarea = intel->sarea; drmGetLock(intel->driFd, intel->hHWContext, flags); if (INTEL_DEBUG & DEBUG_LOCK) _mesa_printf("%s - got contended lock\n", __progname); /* If the window moved, may need to set a new cliprect now. * * NOTE: This releases and regains the hw lock, so all state * checking must be done *after* this call: */ if (dPriv) DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv); /* If the last consumer of the texture memory wasn't us, notify the fake * bufmgr and record the new owner. We should have the memory shared * between contexts of a single fake bufmgr, but this will at least make * things correct for now. */ if (!intel->intelScreen->ttm && sarea->texAge != intel->hHWContext) { sarea->texAge = intel->hHWContext; dri_bufmgr_fake_contended_lock_take(intel->intelScreen->bufmgr); if (INTEL_DEBUG & DEBUG_BATCH) i915_disasm_context_reset(); } if (sarea->width != intelScreen->width || sarea->height != intelScreen->height || sarea->rotation != intelScreen->current_rotation) { intelUpdateScreenRotation(sPriv, sarea); } if (sarea->width != intel->width || sarea->height != intel->height || sarea->rotation != intel->current_rotation) { void *batchMap = intel->batch->map; /* * FIXME: Really only need to do this when drawing to a * common back- or front buffer. */ /* * This will drop the outstanding batchbuffer on the floor */ if (batchMap != NULL) { dri_bo_unmap(intel->batch->buf); intel->batch->map = NULL; } intel_batchbuffer_reset(intel->batch); if (batchMap == NULL) { dri_bo_unmap(intel->batch->buf); intel->batch->map = NULL; } /* lose all primitives */ intel->prim.primitive = ~0; intel->prim.start_ptr = 0; intel->prim.flush = 0; /* re-emit all state */ intel->vtbl.lost_hardware(intel); /* force window update */ intel->lastStamp = 0; intel->width = sarea->width; intel->height = sarea->height; intel->current_rotation = sarea->rotation; } /* Drawable changed? */ if (dPriv && intel->lastStamp != dPriv->lastStamp) { intelWindowMoved(intel); intel->lastStamp = dPriv->lastStamp; } } /* Lock the hardware and validate our state. */ void LOCK_HARDWARE( struct intel_context *intel ) { char __ret=0; struct intel_framebuffer *intel_fb = NULL; struct intel_renderbuffer *intel_rb = NULL; _glthread_LOCK_MUTEX(lockMutex); assert(!intel->locked); if (intel->driDrawable) { intel_fb = intel->driDrawable->driverPrivate; if (intel_fb) intel_rb = intel_get_renderbuffer(&intel_fb->Base, intel_fb->Base._ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT ? BUFFER_FRONT_LEFT : BUFFER_BACK_LEFT); } if (intel_rb && (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) { drmVBlank vbl; vbl.request.type = DRM_VBLANK_ABSOLUTE; if ( intel_fb->vblank_flags & VBLANK_FLAG_SECONDARY ) { vbl.request.type |= DRM_VBLANK_SECONDARY; } vbl.request.sequence = intel_rb->vbl_pending; drmWaitVBlank(intel->driFd, &vbl); intel_fb->vbl_waited = vbl.reply.sequence; } DRM_CAS(intel->driHwLock, intel->hHWContext, (DRM_LOCK_HELD|intel->hHWContext), __ret); if (__ret) intelContendedLock( intel, 0 ); if (INTEL_DEBUG & DEBUG_LOCK) _mesa_printf("%s - locked\n", __progname); intel->locked = 1; } /* Unlock the hardware using the global current context */ void UNLOCK_HARDWARE( struct intel_context *intel ) { intel->locked = 0; DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext); _glthread_UNLOCK_MUTEX(lockMutex); if (INTEL_DEBUG & DEBUG_LOCK) _mesa_printf("%s - unlocked\n", __progname); }