From 9870f7bccc55f9b1728fa8b9ed78a72ab15d7f4f Mon Sep 17 00:00:00 2001 From: Roland Scheidegger Date: Wed, 11 Jul 2007 20:18:51 +0200 Subject: restrict blitted area to size of rendered area --- src/mesa/drivers/dri/i915tex/intel_blit.c | 38 ++++++++++++++++++++----------- 1 file changed, 25 insertions(+), 13 deletions(-) (limited to 'src/mesa/drivers/dri/i915tex/intel_blit.c') diff --git a/src/mesa/drivers/dri/i915tex/intel_blit.c b/src/mesa/drivers/dri/i915tex/intel_blit.c index c755eac6b2..3e42d79980 100644 --- a/src/mesa/drivers/dri/i915tex/intel_blit.c +++ b/src/mesa/drivers/dri/i915tex/intel_blit.c @@ -49,7 +49,7 @@ * Used for SwapBuffers(). */ void -intelCopyBuffer(const __DRIdrawablePrivate * dPriv, +intelCopyBuffer(__DRIdrawablePrivate * dPriv, const drm_clip_rect_t * rect) { @@ -94,6 +94,8 @@ intelCopyBuffer(const __DRIdrawablePrivate * dPriv, = intel->ctx.DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT ? intel_get_rb_region(&intel_fb->Base, BUFFER_FRONT_LEFT) : intel_get_rb_region(&intel_fb->Base, BUFFER_BACK_LEFT); + const int backWidth = intel_fb->Base.Width; + const int backHeight = intel_fb->Base.Height; const int nbox = dPriv->numClipRects; const drm_clip_rect_t *pbox = dPriv->pClipRects; const int pitch = frontRegion->pitch; @@ -134,32 +136,42 @@ intelCopyBuffer(const __DRIdrawablePrivate * dPriv, box = *pbox; if (rect) { - if (rect->x1 > box.x1) - box.x1 = rect->x1; - if (rect->y1 > box.y1) - box.y1 = rect->y1; - if (rect->x2 < box.x2) - box.x2 = rect->x2; - if (rect->y2 < box.y2) - box.y2 = rect->y2; + 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 > backWidth) + box.x2 = backWidth + box.x1; + if (box.y2 - box.y1 > backHeight) + box.y2 = backHeight + box.y1; + DBG("box x1 x2 y1 y2 %d %d %d %d\n", box.x1, box.x2, box.y1, box.y2); - /* XXX should make sure only the minimum area based on - old draw buffer and new front clip rects is copied */ sbox.x1 = box.x1 - dPriv->x; sbox.y1 = box.y1 - dPriv->y; BEGIN_BATCH(8, INTEL_BATCH_NO_CLIPRECTS); OUT_BATCH(CMD); OUT_BATCH(BR13); - OUT_BATCH((pbox->y1 << 16) | pbox->x1); - OUT_BATCH((pbox->y2 << 16) | pbox->x2); + OUT_BATCH((box.y1 << 16) | box.x1); + OUT_BATCH((box.y2 << 16) | box.x2); OUT_RELOC(frontRegion->buffer, DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_WRITE, DRM_BO_MASK_MEM | DRM_BO_FLAG_WRITE, 0); -- cgit v1.2.3