diff options
Diffstat (limited to 'src/gallium/winsys/drm/intel/dri/intel_swapbuffers.c')
| -rw-r--r-- | src/gallium/winsys/drm/intel/dri/intel_swapbuffers.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/intel/dri/intel_swapbuffers.c b/src/gallium/winsys/drm/intel/dri/intel_swapbuffers.c new file mode 100644 index 0000000000..8a18bfd9a4 --- /dev/null +++ b/src/gallium/winsys/drm/intel/dri/intel_swapbuffers.c @@ -0,0 +1,261 @@ +/************************************************************************** + * + * 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 "intel_screen.h" +#include "intel_context.h" +#include "intel_swapbuffers.h" + +#include "intel_reg.h" + +#include "pipe/p_context.h" +#include "state_tracker/st_public.h" +#include "state_tracker/st_context.h" +#include "state_tracker/st_cb_fbo.h" + +#include "ws_dri_bufmgr.h" +#include "intel_batchbuffer.h" + +/** + * Display a colorbuffer surface in an X window. + * Used for SwapBuffers and flushing front buffer rendering. + * + * \param dPriv the window/drawable to display into + * \param surf the surface to display + * \param rect optional subrect of surface to display (may be NULL). + */ +void +intelDisplaySurface(__DRIdrawablePrivate *dPriv, + struct pipe_surface *surf, + const drm_clip_rect_t *rect) +{ + struct intel_screen *intelScreen = intel_screen(dPriv->driScreenPriv); + struct intel_context *intel = intelScreen->dummyContext; + + DBG(SWAP, "%s\n", __FUNCTION__); + + if (!intel) { + /* XXX this is where some kind of extra/meta context could be useful */ + return; + } + + if (intel->last_swap_fence) { + driFenceFinish(intel->last_swap_fence, DRM_FENCE_TYPE_EXE, TRUE); + driFenceUnReference(&intel->last_swap_fence); + intel->last_swap_fence = NULL; + } + intel->last_swap_fence = intel->first_swap_fence; + intel->first_swap_fence = NULL; + + /* The LOCK_HARDWARE is required for the cliprects. Buffer offsets + * should work regardless. + */ + LOCK_HARDWARE(intel); + /* if this drawable isn't currently bound the LOCK_HARDWARE done on the + * current context (which is what intelScreenContext should return) might + * not get a contended lock and thus cliprects not updated (tests/manywin) + */ + if (intel_context(dPriv->driContextPriv) != intel) + DRI_VALIDATE_DRAWABLE_INFO(intel->driScreen, dPriv); + + + if (dPriv && dPriv->numClipRects) { + const int srcWidth = surf->width; + const int srcHeight = surf->height; + const int nbox = dPriv->numClipRects; + const drm_clip_rect_t *pbox = dPriv->pClipRects; + const int pitch = intelScreen->front.pitch / intelScreen->front.cpp; + const int cpp = intelScreen->front.cpp; + const int srcpitch = surf->stride / cpp; + int BR13, CMD; + int i; + + ASSERT(surf->buffer); + ASSERT(surf->cpp == cpp); + + DBG(SWAP, "screen pitch %d src surface pitch %d\n", + pitch, surf->stride); + + if (cpp == 2) { + BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24); + CMD = XY_SRC_COPY_BLT_CMD; + } + else { + BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24) | (1 << 25); + CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA | + XY_SRC_COPY_BLT_WRITE_RGB); + } + + for (i = 0; i < nbox; i++, pbox++) { + drm_clip_rect_t box; + drm_clip_rect_t sbox; + + if (pbox->x1 > pbox->x2 || + pbox->y1 > pbox->y2 || + pbox->x2 > intelScreen->front.width || + pbox->y2 > intelScreen->front.height) { + /* invalid cliprect, skip it */ + continue; + } + + box = *pbox; + + if (rect) { + /* intersect cliprect with user-provided src rect */ + drm_clip_rect_t rrect; + + rrect.x1 = dPriv->x + rect->x1; + rrect.y1 = (dPriv->h - rect->y1 - rect->y2) + dPriv->y; + rrect.x2 = rect->x2 + rrect.x1; + rrect.y2 = rect->y2 + rrect.y1; + if (rrect.x1 > box.x1) + box.x1 = rrect.x1; + if (rrect.y1 > box.y1) + box.y1 = rrect.y1; + if (rrect.x2 < box.x2) + box.x2 = rrect.x2; + if (rrect.y2 < box.y2) + box.y2 = rrect.y2; + + if (box.x1 > box.x2 || box.y1 > box.y2) + continue; + } + + /* restrict blit to size of actually rendered area */ + if (box.x2 - box.x1 > srcWidth) + box.x2 = srcWidth + box.x1; + if (box.y2 - box.y1 > srcHeight) + box.y2 = srcHeight + box.y1; + + DBG(SWAP, "box x1 x2 y1 y2 %d %d %d %d\n", + box.x1, box.x2, box.y1, box.y2); + + sbox.x1 = box.x1 - dPriv->x; + sbox.y1 = box.y1 - dPriv->y; + + assert(box.x1 < box.x2); + assert(box.y1 < box.y2); + + /* XXX this could be done with pipe->surface_copy() */ + /* XXX should have its own batch buffer */ + if (!BEGIN_BATCH(8, 2)) { + /* + * Since we share this batch buffer with a context + * we can't flush it since that risks a GPU lockup + */ + assert(0); + continue; + } + + OUT_BATCH(CMD); + OUT_BATCH(BR13); + OUT_BATCH((box.y1 << 16) | box.x1); + OUT_BATCH((box.y2 << 16) | box.x2); + + OUT_RELOC(intelScreen->front.buffer, + DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_WRITE, + DRM_BO_MASK_MEM | DRM_BO_FLAG_WRITE, 0); + OUT_BATCH((sbox.y1 << 16) | sbox.x1); + OUT_BATCH((srcpitch * cpp) & 0xffff); + OUT_RELOC(dri_bo(surf->buffer), + DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_READ, + DRM_BO_MASK_MEM | DRM_BO_FLAG_READ, 0); + + } + + if (intel->first_swap_fence) + driFenceUnReference(&intel->first_swap_fence); + intel->first_swap_fence = intel_be_batchbuffer_flush(intel->base.batch); + } + + UNLOCK_HARDWARE(intel); + + if (intel->lastStamp != dPriv->lastStamp) { + intelUpdateWindowSize(dPriv); + intel->lastStamp = dPriv->lastStamp; + } +} + + + +/** + * This will be called whenever the currently bound window is moved/resized. + */ +void +intelUpdateWindowSize(__DRIdrawablePrivate *dPriv) +{ + struct intel_framebuffer *intelfb = intel_framebuffer(dPriv); + assert(intelfb->stfb); + st_resize_framebuffer(intelfb->stfb, dPriv->w, dPriv->h); +} + + + +void +intelSwapBuffers(__DRIdrawablePrivate * dPriv) +{ + struct intel_framebuffer *intel_fb = intel_framebuffer(dPriv); + struct pipe_surface *back_surf; + + assert(intel_fb); + assert(intel_fb->stfb); + + back_surf = st_get_framebuffer_surface(intel_fb->stfb, + ST_SURFACE_BACK_LEFT); + if (back_surf) { + st_notify_swapbuffers(intel_fb->stfb); + intelDisplaySurface(dPriv, back_surf, NULL); + st_notify_swapbuffers_complete(intel_fb->stfb); + } +} + + +/** + * Called via glXCopySubBufferMESA() to copy a subrect of the back + * buffer to the front buffer/screen. + */ +void +intelCopySubBuffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h) +{ + struct intel_framebuffer *intel_fb = intel_framebuffer(dPriv); + struct pipe_surface *back_surf; + + assert(intel_fb); + assert(intel_fb->stfb); + + back_surf = st_get_framebuffer_surface(intel_fb->stfb, + ST_SURFACE_BACK_LEFT); + if (back_surf) { + drm_clip_rect_t rect; + rect.x1 = x; + rect.y1 = y; + rect.x2 = w; + rect.y2 = h; + + st_notify_swapbuffers(intel_fb->stfb); + intelDisplaySurface(dPriv, back_surf, &rect); + } +} |