Implement pixman renderer
This renderer could be used when there's no graphic accelerator available, for example in (future) KMS and fbdev backends. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
This commit is contained in:
Vasily Khoruzhick
Kristian Høgsberg
parent
2617185b74
commit
71c2dd3c44
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@ -36,6 +36,7 @@ weston_SOURCES = \
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gl-renderer.h \
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gl-renderer.c \
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noop-renderer.c \
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pixman-renderer.c \
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../shared/matrix.c \
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../shared/matrix.h \
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weston-launch.h \
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@ -0,0 +1,380 @@
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/*
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* Copyright © 2012 Intel Corporation
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* Copyright © 2013 Vasily Khoruzhick <anarsoul@gmail.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The copyright holders make
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define _GNU_SOURCE
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#include <errno.h>
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#include <stdlib.h>
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#include "pixman-renderer.h"
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struct pixman_output_state {
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pixman_image_t *hw_buffer;
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};
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struct pixman_surface_state {
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pixman_image_t *image;
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struct weston_buffer_reference buffer_ref;
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};
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struct pixman_renderer {
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struct weston_renderer base;
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};
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static inline struct pixman_output_state *
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get_output_state(struct weston_output *output)
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{
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return (struct pixman_output_state *)output->renderer_state;
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}
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static inline struct pixman_surface_state *
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get_surface_state(struct weston_surface *surface)
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{
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return (struct pixman_surface_state *)surface->renderer_state;
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}
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static inline struct pixman_renderer *
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get_renderer(struct weston_compositor *ec)
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{
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return (struct pixman_renderer *)ec->renderer;
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}
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static int
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pixman_renderer_read_pixels(struct weston_output *output,
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pixman_format_code_t format, void *pixels,
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uint32_t x, uint32_t y,
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uint32_t width, uint32_t height)
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{
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struct pixman_output_state *po = get_output_state(output);
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pixman_image_t *out_buf;
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uint32_t cur_y;
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if (!po->hw_buffer) {
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errno = ENODEV;
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return -1;
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}
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out_buf = pixman_image_create_bits(format,
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width,
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height,
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pixels,
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(PIXMAN_FORMAT_BPP(format) / 8) * width);
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/* Caller expects vflipped image */
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for (cur_y = y; cur_y < y + height; cur_y++) {
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pixman_image_composite32(PIXMAN_OP_SRC,
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po->hw_buffer, /* src */
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NULL /* mask */,
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out_buf, /* dest */
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x, cur_y, /* src_x, src_y */
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0, 0, /* mask_x, mask_y */
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0, height - (cur_y - y), /* dest_x, dest_y */
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width, /* width */
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1 /* height */);
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}
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pixman_image_unref(out_buf);
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return 0;
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}
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static void
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repaint_region(struct weston_surface *es, struct weston_output *output,
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pixman_region32_t *region, pixman_region32_t *surf_region,
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pixman_op_t pixman_op)
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{
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struct pixman_surface_state *ps = get_surface_state(es);
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struct pixman_output_state *po = get_output_state(output);
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pixman_region32_t final_region;
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pixman_box32_t *rects;
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int nrects, i, src_x, src_y;
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float surface_x, surface_y;
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/* The final region to be painted is the intersection of
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* 'region' and 'surf_region'. However, 'region' is in the global
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* coordinates, and 'surf_region' is in the surface-local
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* coordinates
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*/
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pixman_region32_init(&final_region);
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pixman_region32_copy(&final_region, surf_region);
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if (es->transform.enabled) {
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weston_surface_to_global_float(es, 0, 0, &surface_x, &surface_y);
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pixman_region32_translate(&final_region, (int)surface_x, (int)surface_y);
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} else
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pixman_region32_translate(&final_region, es->geometry.x, es->geometry.y);
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/* That's what we need to paint */
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pixman_region32_intersect(&final_region, &final_region, region);
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rects = pixman_region32_rectangles(&final_region, &nrects);
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for (i = 0; i < nrects; i++) {
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weston_surface_from_global(es, rects[i].x1, rects[i].y1, &src_x, &src_y);
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pixman_image_composite32(pixman_op,
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ps->image, /* src */
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NULL /* mask */,
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po->hw_buffer, /* dest */
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src_x, src_y, /* src_x, src_y */
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0, 0, /* mask_x, mask_y */
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rects[i].x1, rects[i].y1, /* dest_x, dest_y */
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rects[i].x2 - rects[i].x1, /* width */
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rects[i].y2 - rects[i].y1 /* height */);
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}
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pixman_region32_fini(&final_region);
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}
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static void
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draw_surface(struct weston_surface *es, struct weston_output *output,
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pixman_region32_t *damage) /* in global coordinates */
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{
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struct pixman_surface_state *ps = get_surface_state(es);
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/* repaint bounding region in global coordinates: */
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pixman_region32_t repaint;
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/* non-opaque region in surface coordinates: */
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pixman_region32_t surface_blend;
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/* No buffer attached */
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if (!ps->image)
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return;
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pixman_region32_init(&repaint);
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pixman_region32_intersect(&repaint,
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&es->transform.boundingbox, damage);
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pixman_region32_subtract(&repaint, &repaint, &es->clip);
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if (!pixman_region32_not_empty(&repaint))
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goto out;
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if (output->zoom.active) {
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weston_log("pixman renderer does not support zoom\n");
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goto out;
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}
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/* blended region is whole surface minus opaque region: */
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pixman_region32_init_rect(&surface_blend, 0, 0,
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es->geometry.width, es->geometry.height);
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pixman_region32_subtract(&surface_blend, &surface_blend, &es->opaque);
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if (pixman_region32_not_empty(&es->opaque)) {
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repaint_region(es, output, &repaint, &es->opaque, PIXMAN_OP_SRC);
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}
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if (pixman_region32_not_empty(&surface_blend)) {
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repaint_region(es, output, &repaint, &surface_blend, PIXMAN_OP_OVER);
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}
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pixman_region32_fini(&surface_blend);
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out:
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pixman_region32_fini(&repaint);
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}
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static void
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repaint_surfaces(struct weston_output *output, pixman_region32_t *damage)
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{
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struct weston_compositor *compositor = output->compositor;
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struct weston_surface *surface;
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wl_list_for_each_reverse(surface, &compositor->surface_list, link)
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if (surface->plane == &compositor->primary_plane)
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draw_surface(surface, output, damage);
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}
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static void
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pixman_renderer_repaint_output(struct weston_output *output,
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pixman_region32_t *output_damage)
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{
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struct pixman_output_state *po = get_output_state(output);
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if (!po->hw_buffer)
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return;
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repaint_surfaces(output, output_damage);
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pixman_region32_copy(&output->previous_damage, output_damage);
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wl_signal_emit(&output->frame_signal, output);
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/* Actual flip should be done by caller */
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}
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static void
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pixman_renderer_flush_damage(struct weston_surface *surface)
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{
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/* No-op for pixman renderer */
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}
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static void
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pixman_renderer_attach(struct weston_surface *es, struct wl_buffer *buffer)
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{
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struct pixman_surface_state *ps = get_surface_state(es);
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pixman_format_code_t pixman_format;
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weston_buffer_reference(&ps->buffer_ref, buffer);
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if (ps->image) {
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pixman_image_unref(ps->image);
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ps->image = NULL;
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}
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if (!buffer)
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return;
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if (!wl_buffer_is_shm(buffer)) {
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weston_log("Pixman renderer supports only SHM buffers\n");
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weston_buffer_reference(&ps->buffer_ref, NULL);
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return;
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}
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switch (wl_shm_buffer_get_format(buffer)) {
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case WL_SHM_FORMAT_XRGB8888:
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pixman_format = PIXMAN_x8r8g8b8;
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break;
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case WL_SHM_FORMAT_ARGB8888:
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pixman_format = PIXMAN_a8r8g8b8;
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break;
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default:
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weston_log("Unsupported SHM buffer format\n");
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weston_buffer_reference(&ps->buffer_ref, NULL);
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return;
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break;
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}
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ps->image = pixman_image_create_bits(pixman_format,
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wl_shm_buffer_get_width(buffer),
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wl_shm_buffer_get_height(buffer),
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wl_shm_buffer_get_data(buffer),
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wl_shm_buffer_get_stride(buffer));
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}
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static int
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pixman_renderer_create_surface(struct weston_surface *surface)
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{
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struct pixman_surface_state *ps;
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ps = calloc(1, sizeof *ps);
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if (!ps)
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return -1;
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surface->renderer_state = ps;
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return 0;
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}
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static void
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pixman_renderer_surface_set_color(struct weston_surface *es,
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float red, float green, float blue, float alpha)
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{
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struct pixman_surface_state *ps = get_surface_state(es);
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pixman_color_t color;
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color.red = red * 0xffff;
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color.green = green * 0xffff;
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color.blue = blue * 0xffff;
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color.alpha = alpha * 0xffff;
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if (ps->image) {
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pixman_image_unref(ps->image);
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ps->image = NULL;
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}
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ps->image = pixman_image_create_solid_fill(&color);
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}
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static void
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pixman_renderer_destroy_surface(struct weston_surface *surface)
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{
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struct pixman_surface_state *ps = get_surface_state(surface);
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if (ps->image) {
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pixman_image_unref(ps->image);
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ps->image = NULL;
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}
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weston_buffer_reference(&ps->buffer_ref, NULL);
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free(ps);
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}
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WL_EXPORT void
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pixman_renderer_destroy(struct weston_compositor *ec)
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{
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free(ec->renderer);
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ec->renderer = NULL;
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}
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WL_EXPORT int
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pixman_renderer_init(struct weston_compositor *ec)
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{
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struct weston_renderer *renderer;
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renderer = malloc(sizeof *renderer);
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if (renderer == NULL)
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return -1;
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renderer->read_pixels = pixman_renderer_read_pixels;
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renderer->repaint_output = pixman_renderer_repaint_output;
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renderer->flush_damage = pixman_renderer_flush_damage;
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renderer->attach = pixman_renderer_attach;
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renderer->create_surface = pixman_renderer_create_surface;
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renderer->surface_set_color = pixman_renderer_surface_set_color;
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renderer->destroy_surface = pixman_renderer_destroy_surface;
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ec->renderer = renderer;
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return 0;
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}
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WL_EXPORT void
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pixman_renderer_output_set_buffer(struct weston_output *output, pixman_image_t *buffer)
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{
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struct pixman_output_state *po = get_output_state(output);
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if (po->hw_buffer)
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pixman_image_unref(po->hw_buffer);
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po->hw_buffer = buffer;
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if (po->hw_buffer) {
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output->compositor->read_format = pixman_image_get_format(po->hw_buffer);
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pixman_image_ref(po->hw_buffer);
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}
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}
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WL_EXPORT int
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pixman_renderer_output_create(struct weston_output *output)
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{
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struct pixman_output_state *po = calloc(1, sizeof *po);
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if (!po)
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return -1;
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output->renderer_state = po;
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return 0;
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}
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WL_EXPORT void
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pixman_renderer_output_destroy(struct weston_output *output)
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{
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struct pixman_output_state *po = get_output_state(output);
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pixman_image_unref(po->hw_buffer);
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po->hw_buffer = NULL;
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free(po);
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}
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@ -0,0 +1,38 @@
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/*
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* Copyright © 2013 Vasily Khoruzhick <anarsoul@gmail.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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||||
* documentation, and that the name of the copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The copyright holders make
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "compositor.h"
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void
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pixman_renderer_destroy(struct weston_compositor *ec);
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int
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pixman_renderer_init(struct weston_compositor *ec);
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int
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pixman_renderer_output_create(struct weston_output *output);
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void
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pixman_renderer_output_set_buffer(struct weston_output *output, pixman_image_t *buffer);
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void
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pixman_renderer_output_destroy(struct weston_output *output);
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