| /************************************************************************** |
| |
| Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and |
| VA Linux Systems Inc., Fremont, California. |
| Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved. |
| |
| The Weather Channel (TM) funded Tungsten Graphics to develop the |
| initial release of the Radeon 8500 driver under the XFree86 license. |
| This notice must be preserved. |
| |
| All Rights Reserved. |
| |
| Permission is hereby granted, free of charge, to any person obtaining |
| a copy of this software and associated documentation files (the |
| "Software"), to deal in the Software without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Software, and to |
| permit persons to whom the Software is furnished to do so, subject to |
| the following conditions: |
| |
| The above copyright notice 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 NONINFRINGEMENT. |
| IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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. |
| |
| **************************************************************************/ |
| |
| /* |
| * Authors: |
| * Gareth Hughes <gareth@valinux.com> |
| * Keith Whitwell <keith@tungstengraphics.com> |
| * Kevin E. Martin <martin@valinux.com> |
| */ |
| |
| #include "radeon_lock.h" |
| #include "radeon_ioctl.h" |
| #include "radeon_state.h" |
| #include "r300_context.h" |
| #include "r300_state.h" |
| |
| #include "framebuffer.h" |
| |
| #include "drirenderbuffer.h" |
| |
| #if DEBUG_LOCKING |
| char *prevLockFile = NULL; |
| int prevLockLine = 0; |
| #endif |
| |
| /* Turn on/off page flipping according to the flags in the sarea: |
| */ |
| void radeonUpdatePageFlipping(radeonContextPtr rmesa) |
| { |
| int use_back; |
| |
| rmesa->doPageFlip = rmesa->sarea->pfState; |
| if (rmesa->glCtx->WinSysDrawBuffer) { |
| driFlipRenderbuffers(rmesa->glCtx->WinSysDrawBuffer, |
| rmesa->sarea->pfCurrentPage); |
| r300UpdateDrawBuffer(rmesa->glCtx); |
| } |
| |
| use_back = rmesa->glCtx->DrawBuffer ? |
| (rmesa->glCtx->DrawBuffer->_ColorDrawBufferIndexes[0] == |
| BUFFER_BACK_LEFT) : 1; |
| use_back ^= (rmesa->sarea->pfCurrentPage == 1); |
| |
| if (use_back) { |
| rmesa->state.color.drawOffset = |
| rmesa->radeonScreen->backOffset; |
| rmesa->state.color.drawPitch = rmesa->radeonScreen->backPitch; |
| } else { |
| rmesa->state.color.drawOffset = |
| rmesa->radeonScreen->frontOffset; |
| rmesa->state.color.drawPitch = |
| rmesa->radeonScreen->frontPitch; |
| } |
| } |
| |
| /* Update the hardware state. This is called if another context has |
| * grabbed the hardware lock, which includes the X server. This |
| * function also updates the driver's window state after the X server |
| * moves, resizes or restacks a window -- the change will be reflected |
| * in the drawable position and clip rects. Since the X server grabs |
| * the hardware lock when it changes the window state, this routine will |
| * automatically be called after such a change. |
| */ |
| void radeonGetLock(radeonContextPtr rmesa, GLuint flags) |
| { |
| __DRIdrawablePrivate *const drawable = rmesa->dri.drawable; |
| __DRIdrawablePrivate *const readable = rmesa->dri.readable; |
| __DRIscreenPrivate *sPriv = rmesa->dri.screen; |
| drm_radeon_sarea_t *sarea = rmesa->sarea; |
| r300ContextPtr r300 = (r300ContextPtr) rmesa; |
| |
| assert(drawable != NULL); |
| |
| drmGetLock(rmesa->dri.fd, rmesa->dri.hwContext, flags); |
| |
| /* The window might have moved, so we might need to get new clip |
| * rects. |
| * |
| * NOTE: This releases and regrabs the hw lock to allow the X server |
| * to respond to the DRI protocol request for new drawable info. |
| * Since the hardware state depends on having the latest drawable |
| * clip rects, all state checking must be done _after_ this call. |
| */ |
| DRI_VALIDATE_DRAWABLE_INFO(sPriv, drawable); |
| if (drawable != readable) { |
| DRI_VALIDATE_DRAWABLE_INFO(sPriv, readable); |
| } |
| |
| if (rmesa->lastStamp != drawable->lastStamp) { |
| radeonUpdatePageFlipping(rmesa); |
| radeonSetCliprects(rmesa); |
| r300UpdateViewportOffset(rmesa->glCtx); |
| driUpdateFramebufferSize(rmesa->glCtx, drawable); |
| } |
| |
| if (sarea->ctx_owner != rmesa->dri.hwContext) { |
| int i; |
| |
| sarea->ctx_owner = rmesa->dri.hwContext; |
| for (i = 0; i < r300->nr_heaps; i++) { |
| DRI_AGE_TEXTURES(r300->texture_heaps[i]); |
| } |
| } |
| |
| rmesa->lost_context = GL_TRUE; |
| } |