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https://gitlab.freedesktop.org/wayland/weston
synced 2024-09-06 18:05:39 +00:00
compositor: Clip repaint to the damage region
Drop glScissor, and just clip the surface against the repaint region and render each rectangle in the resulting region.
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feb370e4ea
commit
525e4c0bea
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@ -360,10 +360,21 @@ background_create(struct wlsc_output *output, const char *filename)
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}
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static void
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wlsc_surface_draw(struct wlsc_surface *es, struct wlsc_output *output)
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wlsc_surface_draw(struct wlsc_surface *es,
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struct wlsc_output *output, pixman_region32_t *clip)
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{
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struct wlsc_compositor *ec = es->compositor;
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GLfloat vertices[4 * 4];
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GLfloat *v, inv_width, inv_height;
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unsigned int *p;
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pixman_region32_t repaint;
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pixman_box32_t *rectangles;
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int i, n;
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pixman_region32_init_rect(&repaint,
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es->x, es->y, es->width, es->height);
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pixman_region32_intersect(&repaint, &repaint, clip);
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if (!pixman_region32_not_empty(&repaint))
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return;
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if (es->visual == &ec->compositor.argb_visual) {
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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@ -375,34 +386,51 @@ wlsc_surface_draw(struct wlsc_surface *es, struct wlsc_output *output)
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glDisable(GL_BLEND);
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}
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vertices[ 0] = es->x;
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vertices[ 1] = es->y;
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vertices[ 2] = 0.0;
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vertices[ 3] = 0.0;
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rectangles = pixman_region32_rectangles(&repaint, &n);
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v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
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p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
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inv_width = 1.0 / es->width;
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inv_height = 1.0 / es->height;
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for (i = 0; i < n; i++, v += 16, p += 6) {
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v[ 0] = rectangles[i].x1;
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v[ 1] = rectangles[i].y1;
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v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
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v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
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vertices[ 4] = es->x;
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vertices[ 5] = es->y + es->height;
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vertices[ 6] = 0.0;
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vertices[ 7] = 1.0;
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v[ 4] = rectangles[i].x1;
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v[ 5] = rectangles[i].y2;
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v[ 6] = v[ 2];
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v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
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vertices[ 8] = es->x + es->width;
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vertices[ 9] = es->y;
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vertices[10] = 1.0;
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vertices[11] = 0.0;
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v[ 8] = rectangles[i].x2;
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v[ 9] = rectangles[i].y1;
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v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
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v[11] = v[ 3];
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vertices[12] = es->x + es->width;
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vertices[13] = es->y + es->height;
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vertices[14] = 1.0;
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vertices[15] = 1.0;
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v[12] = rectangles[i].x2;
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v[13] = rectangles[i].y2;
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v[14] = v[10];
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v[15] = v[ 7];
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p[0] = i * 4 + 0;
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p[1] = i * 4 + 1;
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p[2] = i * 4 + 2;
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p[3] = i * 4 + 2;
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p[4] = i * 4 + 1;
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p[5] = i * 4 + 3;
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}
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glBindTexture(GL_TEXTURE_2D, es->texture);
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glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE,
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4 * sizeof(GLfloat), vertices);
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glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE,
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4 * sizeof(GLfloat), &vertices[2]);
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v = ec->vertices.data;
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glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
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glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
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glEnableVertexAttribArray(0);
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glEnableVertexAttribArray(1);
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
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ec->vertices.size = 0;
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ec->indices.size = 0;
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pixman_region32_fini(&repaint);
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}
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static void
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@ -442,7 +470,6 @@ wlsc_output_repaint(struct wlsc_output *output)
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struct wlsc_surface *es;
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struct wlsc_input_device *eid;
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pixman_region32_t new_damage, total_damage;
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pixman_box32_t *extents;
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glViewport(0, 0, output->width, output->height);
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@ -461,20 +488,16 @@ wlsc_output_repaint(struct wlsc_output *output)
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&output->previous_damage_region);
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pixman_region32_copy(&output->previous_damage_region, &new_damage);
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extents = pixman_region32_extents(&total_damage);
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glEnable(GL_SCISSOR_TEST);
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glScissor(extents->x1, extents->y1,
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extents->x2 - extents->x1, extents->y2 - extents->y1);
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es = container_of(ec->surface_list.next, struct wlsc_surface, link);
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if (es->map_type == WLSC_SURFACE_MAP_FULLSCREEN &&
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es->fullscreen_output == output) {
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if (es->width < output->width || es->height < output->height)
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glClear(GL_COLOR_BUFFER_BIT);
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wlsc_surface_draw(es, output);
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wlsc_surface_draw(es, output, &total_damage);
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} else {
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if (output->background)
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wlsc_surface_draw(output->background, output);
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wlsc_surface_draw(output->background,
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output, &total_damage);
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else
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glClear(GL_COLOR_BUFFER_BIT);
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@ -483,16 +506,17 @@ wlsc_output_repaint(struct wlsc_output *output)
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ec->switcher->current == es)
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continue;
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wlsc_surface_draw(es, output);
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wlsc_surface_draw(es, output, &total_damage);
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}
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}
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if (ec->switcher)
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wlsc_surface_draw(ec->switcher->current, output);
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wlsc_surface_draw(ec->switcher->current,
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output, &total_damage);
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if (ec->focus)
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wl_list_for_each(eid, &ec->input_device_list, link)
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wlsc_surface_draw(eid->sprite, output);
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wlsc_surface_draw(eid->sprite, output, &total_damage);
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}
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static void
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@ -112,6 +112,7 @@ struct wlsc_compositor {
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int repaint_on_timeout;
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struct timespec previous_swap;
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pixman_region32_t damage_region;
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struct wl_array vertices, indices;
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struct wlsc_switcher *switcher;
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uint32_t focus;
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