forked from Minki/linux
vmwgfx: Clip cliprects against screen boundaries in present and dirty
Signed-off-by: Jakob Bornecrantz <jakob@vmware.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jakob Bornecrantz
Dave Airlie
parent
bfc2638dc0
commit
6abff3c780
@ -31,6 +31,44 @@
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/* Might need a hrtimer here? */
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#define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
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struct vmw_clip_rect {
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int x1, x2, y1, y2;
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};
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/**
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* Clip @num_rects number of @rects against @clip storing the
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* results in @out_rects and the number of passed rects in @out_num.
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*/
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void vmw_clip_cliprects(struct drm_clip_rect *rects,
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int num_rects,
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struct vmw_clip_rect clip,
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SVGASignedRect *out_rects,
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int *out_num)
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{
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int i, k;
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for (i = 0, k = 0; i < num_rects; i++) {
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int x1 = max_t(int, clip.x1, rects[i].x1);
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int y1 = max_t(int, clip.y1, rects[i].y1);
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int x2 = min_t(int, clip.x2, rects[i].x2);
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int y2 = min_t(int, clip.y2, rects[i].y2);
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if (x1 >= x2)
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continue;
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if (y1 >= y2)
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continue;
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out_rects[k].left = x1;
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out_rects[k].top = y1;
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out_rects[k].right = x2;
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out_rects[k].bottom = y2;
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k++;
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}
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*out_num = k;
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}
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void vmw_display_unit_cleanup(struct vmw_display_unit *du)
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{
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if (du->cursor_surface)
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@ -386,8 +424,9 @@ static int do_surface_dirty_sou(struct vmw_private *dev_priv,
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struct drm_clip_rect *clips,
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unsigned num_clips, int inc)
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{
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struct drm_clip_rect *clips_ptr;
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struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
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struct drm_clip_rect *clips_ptr;
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struct drm_clip_rect *tmp;
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struct drm_crtc *crtc;
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size_t fifo_size;
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int i, num_units;
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@ -400,7 +439,6 @@ static int do_surface_dirty_sou(struct vmw_private *dev_priv,
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} *cmd;
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SVGASignedRect *blits;
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num_units = 0;
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list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list,
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head) {
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@ -411,13 +449,24 @@ static int do_surface_dirty_sou(struct vmw_private *dev_priv,
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BUG_ON(!clips || !num_clips);
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tmp = kzalloc(sizeof(*tmp) * num_clips, GFP_KERNEL);
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if (unlikely(tmp == NULL)) {
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DRM_ERROR("Temporary cliprect memory alloc failed.\n");
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return -ENOMEM;
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}
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fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num_clips;
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cmd = kzalloc(fifo_size, GFP_KERNEL);
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Temporary fifo memory alloc failed.\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto out_free_tmp;
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}
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/* setup blits pointer */
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blits = (SVGASignedRect *)&cmd[1];
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/* initial clip region */
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left = clips->x1;
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right = clips->x2;
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top = clips->y1;
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@ -443,45 +492,60 @@ static int do_surface_dirty_sou(struct vmw_private *dev_priv,
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cmd->body.srcRect.bottom = bottom;
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clips_ptr = clips;
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blits = (SVGASignedRect *)&cmd[1];
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for (i = 0; i < num_clips; i++, clips_ptr += inc) {
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blits[i].left = clips_ptr->x1 - left;
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blits[i].right = clips_ptr->x2 - left;
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blits[i].top = clips_ptr->y1 - top;
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blits[i].bottom = clips_ptr->y2 - top;
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tmp[i].x1 = clips_ptr->x1 - left;
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tmp[i].x2 = clips_ptr->x2 - left;
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tmp[i].y1 = clips_ptr->y1 - top;
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tmp[i].y2 = clips_ptr->y2 - top;
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}
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/* do per unit writing, reuse fifo for each */
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for (i = 0; i < num_units; i++) {
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struct vmw_display_unit *unit = units[i];
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int clip_x1 = left - unit->crtc.x;
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int clip_y1 = top - unit->crtc.y;
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int clip_x2 = right - unit->crtc.x;
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int clip_y2 = bottom - unit->crtc.y;
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struct vmw_clip_rect clip;
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int num;
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clip.x1 = left - unit->crtc.x;
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clip.y1 = top - unit->crtc.y;
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clip.x2 = right - unit->crtc.x;
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clip.y2 = bottom - unit->crtc.y;
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/* skip any crtcs that misses the clip region */
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if (clip_x1 >= unit->crtc.mode.hdisplay ||
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clip_y1 >= unit->crtc.mode.vdisplay ||
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clip_x2 <= 0 || clip_y2 <= 0)
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if (clip.x1 >= unit->crtc.mode.hdisplay ||
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clip.y1 >= unit->crtc.mode.vdisplay ||
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clip.x2 <= 0 || clip.y2 <= 0)
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continue;
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/*
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* In order for the clip rects to be correctly scaled
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* the src and dest rects needs to be the same size.
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*/
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cmd->body.destRect.left = clip.x1;
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cmd->body.destRect.right = clip.x2;
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cmd->body.destRect.top = clip.y1;
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cmd->body.destRect.bottom = clip.y2;
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/* create a clip rect of the crtc in dest coords */
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clip.x2 = unit->crtc.mode.hdisplay - clip.x1;
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clip.y2 = unit->crtc.mode.vdisplay - clip.y1;
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clip.x1 = 0 - clip.x1;
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clip.y1 = 0 - clip.y1;
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/* need to reset sid as it is changed by execbuf */
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cmd->body.srcImage.sid = cpu_to_le32(framebuffer->user_handle);
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cmd->body.destScreenId = unit->unit;
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/*
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* The blit command is a lot more resilient then the
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* readback command when it comes to clip rects. So its
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* okay to go out of bounds.
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*/
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/* clip and write blits to cmd stream */
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vmw_clip_cliprects(tmp, num_clips, clip, blits, &num);
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cmd->body.destRect.left = clip_x1;
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cmd->body.destRect.right = clip_x2;
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cmd->body.destRect.top = clip_y1;
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cmd->body.destRect.bottom = clip_y2;
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/* if no cliprects hit skip this */
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if (num == 0)
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continue;
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/* recalculate package length */
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fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num;
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cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
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ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
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fifo_size, 0, NULL);
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@ -489,7 +553,10 @@ static int do_surface_dirty_sou(struct vmw_private *dev_priv,
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break;
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}
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kfree(cmd);
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out_free_tmp:
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kfree(tmp);
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return ret;
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}
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@ -795,6 +862,7 @@ static int do_dmabuf_dirty_sou(struct drm_file *file_priv,
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int clip_y1 = clips_ptr->y1 - unit->crtc.y;
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int clip_x2 = clips_ptr->x2 - unit->crtc.x;
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int clip_y2 = clips_ptr->y2 - unit->crtc.y;
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int move_x, move_y;
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/* skip any crtcs that misses the clip region */
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if (clip_x1 >= unit->crtc.mode.hdisplay ||
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@ -802,12 +870,21 @@ static int do_dmabuf_dirty_sou(struct drm_file *file_priv,
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clip_x2 <= 0 || clip_y2 <= 0)
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continue;
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/* clip size to crtc size */
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clip_x2 = min_t(int, clip_x2, unit->crtc.mode.hdisplay);
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clip_y2 = min_t(int, clip_y2, unit->crtc.mode.vdisplay);
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/* translate both src and dest to bring clip into screen */
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move_x = min_t(int, clip_x1, 0);
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move_y = min_t(int, clip_y1, 0);
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/* actual translate done here */
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blits[hit_num].header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
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blits[hit_num].body.destScreenId = unit->unit;
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blits[hit_num].body.srcOrigin.x = clips_ptr->x1;
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blits[hit_num].body.srcOrigin.y = clips_ptr->y1;
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blits[hit_num].body.destRect.left = clip_x1;
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blits[hit_num].body.destRect.top = clip_y1;
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blits[hit_num].body.srcOrigin.x = clips_ptr->x1 - move_x;
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blits[hit_num].body.srcOrigin.y = clips_ptr->y1 - move_y;
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blits[hit_num].body.destRect.left = clip_x1 - move_x;
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blits[hit_num].body.destRect.top = clip_y1 - move_y;
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blits[hit_num].body.destRect.right = clip_x2;
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blits[hit_num].body.destRect.bottom = clip_y2;
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hit_num++;
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@ -1094,6 +1171,7 @@ int vmw_kms_present(struct vmw_private *dev_priv,
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uint32_t num_clips)
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{
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struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
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struct drm_clip_rect *tmp;
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struct drm_crtc *crtc;
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size_t fifo_size;
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int i, k, num_units;
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@ -1116,11 +1194,18 @@ int vmw_kms_present(struct vmw_private *dev_priv,
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BUG_ON(surface == NULL);
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BUG_ON(!clips || !num_clips);
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tmp = kzalloc(sizeof(*tmp) * num_clips, GFP_KERNEL);
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if (unlikely(tmp == NULL)) {
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DRM_ERROR("Temporary cliprect memory alloc failed.\n");
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return -ENOMEM;
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}
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fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num_clips;
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cmd = kmalloc(fifo_size, GFP_KERNEL);
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Failed to allocate temporary fifo memory.\n");
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return -ENOMEM;
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ret = -ENOMEM;
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goto out_free_tmp;
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}
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left = clips->x;
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@ -1138,50 +1223,66 @@ int vmw_kms_present(struct vmw_private *dev_priv,
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/* only need to do this once */
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memset(cmd, 0, fifo_size);
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cmd->header.id = cpu_to_le32(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN);
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cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
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blits = (SVGASignedRect *)&cmd[1];
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cmd->body.srcRect.left = left;
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cmd->body.srcRect.right = right;
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cmd->body.srcRect.top = top;
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cmd->body.srcRect.bottom = bottom;
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blits = (SVGASignedRect *)&cmd[1];
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for (i = 0; i < num_clips; i++) {
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blits[i].left = clips[i].x - left;
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blits[i].right = clips[i].x + clips[i].w - left;
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blits[i].top = clips[i].y - top;
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blits[i].bottom = clips[i].y + clips[i].h - top;
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tmp[i].x1 = clips[i].x - left;
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tmp[i].x2 = clips[i].x + clips[i].w - left;
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tmp[i].y1 = clips[i].y - top;
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tmp[i].y2 = clips[i].y + clips[i].h - top;
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}
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for (k = 0; k < num_units; k++) {
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struct vmw_display_unit *unit = units[k];
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int clip_x1 = left + destX - unit->crtc.x;
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int clip_y1 = top + destY - unit->crtc.y;
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int clip_x2 = right + destX - unit->crtc.x;
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int clip_y2 = bottom + destY - unit->crtc.y;
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struct vmw_clip_rect clip;
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int num;
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clip.x1 = left + destX - unit->crtc.x;
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clip.y1 = top + destY - unit->crtc.y;
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clip.x2 = right + destX - unit->crtc.x;
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clip.y2 = bottom + destY - unit->crtc.y;
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/* skip any crtcs that misses the clip region */
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if (clip_x1 >= unit->crtc.mode.hdisplay ||
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clip_y1 >= unit->crtc.mode.vdisplay ||
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clip_x2 <= 0 || clip_y2 <= 0)
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if (clip.x1 >= unit->crtc.mode.hdisplay ||
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clip.y1 >= unit->crtc.mode.vdisplay ||
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clip.x2 <= 0 || clip.y2 <= 0)
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continue;
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/*
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* In order for the clip rects to be correctly scaled
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* the src and dest rects needs to be the same size.
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*/
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cmd->body.destRect.left = clip.x1;
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cmd->body.destRect.right = clip.x2;
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cmd->body.destRect.top = clip.y1;
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cmd->body.destRect.bottom = clip.y2;
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/* create a clip rect of the crtc in dest coords */
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clip.x2 = unit->crtc.mode.hdisplay - clip.x1;
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clip.y2 = unit->crtc.mode.vdisplay - clip.y1;
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clip.x1 = 0 - clip.x1;
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clip.y1 = 0 - clip.y1;
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/* need to reset sid as it is changed by execbuf */
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cmd->body.srcImage.sid = sid;
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cmd->body.destScreenId = unit->unit;
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/*
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* The blit command is a lot more resilient then the
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* readback command when it comes to clip rects. So its
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* okay to go out of bounds.
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*/
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/* clip and write blits to cmd stream */
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vmw_clip_cliprects(tmp, num_clips, clip, blits, &num);
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cmd->body.destRect.left = clip_x1;
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cmd->body.destRect.right = clip_x2;
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cmd->body.destRect.top = clip_y1;
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cmd->body.destRect.bottom = clip_y2;
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/* if no cliprects hit skip this */
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if (num == 0)
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continue;
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/* recalculate package length */
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fifo_size = sizeof(*cmd) + sizeof(SVGASignedRect) * num;
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cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
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ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
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fifo_size, 0, NULL);
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@ -1190,6 +1291,8 @@ int vmw_kms_present(struct vmw_private *dev_priv,
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}
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kfree(cmd);
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out_free_tmp:
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kfree(tmp);
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return ret;
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}
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