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output: take a wlr_buffer in set_cursor

Browse source 
Instead of passing a wlr_texture to the backend, directly pass a
wlr_buffer. Use get_cursor_size and get_cursor_formats to create
a wlr_buffer that can be used as a cursor.

We don't want to pass a wlr_texture because we want to remove as
many rendering bits from the backend as possible.
This commit is contained in:
Simon Ser 2020-12-04 16:41:16 +01:00
parent 01e0f51fad
commit 2b0a1aeed5
10 changed files with 301 additions and 279 deletions
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105
backend/x11/output.c
View file

@ -420,83 +420,38 @@ static void update_x11_output_cursor(struct wlr_x11_output *output,
}
static bool output_cursor_to_picture(struct wlr_x11_output *output,
struct wlr_texture *texture, enum wl_output_transform transform,
int width, int height) {
struct wlr_buffer *buffer) {
struct wlr_x11_backend *x11 = output->x11;
struct wlr_allocator *allocator = backend_get_allocator(&x11->backend);
struct wlr_renderer *renderer = wlr_backend_get_renderer(&x11->backend);
int depth = 32;
int stride = width * 4;
if (output->cursor.pic != XCB_NONE) {
xcb_render_free_picture(x11->xcb, output->cursor.pic);
}
output->cursor.pic = XCB_NONE;
if (texture == NULL) {
if (buffer == NULL) {
return true;
}
if (output->cursor.swapchain == NULL ||
output->cursor.swapchain->width != width ||
output->cursor.swapchain->height != height) {
wlr_swapchain_destroy(output->cursor.swapchain);
output->cursor.swapchain = wlr_swapchain_create(allocator,
width, height, x11->drm_format);
if (output->cursor.swapchain == NULL) {
return false;
}
}
int depth = 32;
int stride = buffer->width * 4;
struct wlr_buffer *wlr_buffer =
wlr_swapchain_acquire(output->cursor.swapchain, NULL);
if (wlr_buffer == NULL) {
if (!wlr_renderer_bind_buffer(renderer, buffer)) {
return false;
}
if (!wlr_renderer_bind_buffer(renderer, wlr_buffer)) {
return false;
}
uint8_t *data = malloc(width * height * 4);
uint8_t *data = malloc(buffer->height * stride);
if (data == NULL) {
return false;
}
struct wlr_box cursor_box = {
.width = width,
.height = height,
};
float output_matrix[9];
wlr_matrix_identity(output_matrix);
if (output->wlr_output.transform != WL_OUTPUT_TRANSFORM_NORMAL) {
struct wlr_box tr_size = { .width = width, .height = height };
wlr_box_transform(&tr_size, &tr_size, output->wlr_output.transform, 0, 0);
wlr_matrix_translate(output_matrix, width / 2.0, height / 2.0);
wlr_matrix_transform(output_matrix, output->wlr_output.transform);
wlr_matrix_translate(output_matrix,
- tr_size.width / 2.0, - tr_size.height / 2.0);
}
float matrix[9];
wlr_matrix_project_box(matrix, &cursor_box, transform, 0, output_matrix);
wlr_renderer_begin(renderer, width, height);
wlr_renderer_clear(renderer, (float[]){ 0.0, 0.0, 0.0, 0.0 });
wlr_render_texture_with_matrix(renderer, texture, matrix, 1.0);
wlr_renderer_end(renderer);
bool result = wlr_renderer_read_pixels(
renderer, DRM_FORMAT_ARGB8888, NULL,
width * 4, width, height, 0, 0, 0, 0,
stride, buffer->width, buffer->height, 0, 0, 0, 0,
data);
wlr_renderer_bind_buffer(renderer, NULL);
wlr_buffer_unlock(wlr_buffer);
if (!result) {
free(data);
return false;
@ -504,7 +459,7 @@ static bool output_cursor_to_picture(struct wlr_x11_output *output,
xcb_pixmap_t pix = xcb_generate_id(x11->xcb);
xcb_create_pixmap(x11->xcb, depth, pix, output->win,
width, height);
buffer->width, buffer->height);
output->cursor.pic = xcb_generate_id(x11->xcb);
xcb_render_create_picture(x11->xcb, output->cursor.pic,
@ -514,9 +469,8 @@ static bool output_cursor_to_picture(struct wlr_x11_output *output,
xcb_create_gc(x11->xcb, gc, pix, 0, NULL);
xcb_put_image(x11->xcb, XCB_IMAGE_FORMAT_Z_PIXMAP,
pix, gc, width, height, 0, 0, 0, depth,
stride * height * sizeof(uint8_t),
data);
pix, gc, buffer->width, buffer->height, 0, 0, 0, depth,
stride * buffer->height * sizeof(uint8_t), data);
free(data);
xcb_free_gc(x11->xcb, gc);
xcb_free_pixmap(x11->xcb, pix);
@ -525,55 +479,32 @@ static bool output_cursor_to_picture(struct wlr_x11_output *output,
}
static bool output_set_cursor(struct wlr_output *wlr_output,
struct wlr_texture *texture, float scale,
enum wl_output_transform transform,
int32_t hotspot_x, int32_t hotspot_y, bool update_texture) {
struct wlr_buffer *buffer, int32_t hotspot_x, int32_t hotspot_y) {
struct wlr_x11_output *output = get_x11_output_from_output(wlr_output);
struct wlr_x11_backend *x11 = output->x11;
int width = 0, height = 0;
if (x11->argb32 == XCB_NONE) {
return false;
}
if (texture != NULL) {
width = texture->width * wlr_output->scale / scale;
height = texture->height * wlr_output->scale / scale;
if (buffer != NULL) {
if (hotspot_x < 0) {
hotspot_x = 0;
}
if ((uint32_t)hotspot_x > texture->width) {
hotspot_x = texture->width;
if (hotspot_x > buffer->width) {
hotspot_x = buffer->width;
}
if (hotspot_y < 0) {
hotspot_y = 0;
}
if ((uint32_t)hotspot_y > texture->height) {
hotspot_y = texture->height;
if (hotspot_y > buffer->height) {
hotspot_y = buffer->height;
}
}
struct wlr_box hotspot = { .x = hotspot_x, .y = hotspot_y };
wlr_box_transform(&hotspot, &hotspot,
wlr_output_transform_invert(wlr_output->transform),
width, height);
bool success = output_cursor_to_picture(output, buffer);
if (!update_texture) {
// This means we previously had a failure of some sort.
if (texture != NULL && output->cursor.pic == XCB_NONE) {
return false;
}
// Update hotspot without changing cursor image
update_x11_output_cursor(output, hotspot.x, hotspot.y);
return true;
}
bool success = output_cursor_to_picture(output, texture, transform,
width, height);
update_x11_output_cursor(output, hotspot.x, hotspot.y);
update_x11_output_cursor(output, hotspot_x, hotspot_y);
return success;
}