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render/pixman: add begin_pixman_data_ptr_access()

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This logic is used twice.
This commit is contained in:
Simon Ser 2022-12-07 13:56:07 +01:00
parent d7fcc1e96f
commit 6ce371a317
2 changed files with 41 additions and 47 deletions
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3
include/render/pixman.h
View file

@ -52,4 +52,7 @@ pixman_format_code_t get_pixman_format_from_drm(uint32_t fmt);
uint32_t get_drm_format_from_pixman(pixman_format_code_t fmt);
const uint32_t *get_pixman_drm_formats(size_t *len);
bool begin_pixman_data_ptr_access(struct wlr_buffer *buffer, pixman_image_t **image_ptr,
uint32_t flags);
#endif

85
render/pixman/renderer.c
View file

@ -23,6 +23,39 @@ static struct wlr_pixman_renderer *get_renderer(
return (struct wlr_pixman_renderer *)wlr_renderer;
}
bool begin_pixman_data_ptr_access(struct wlr_buffer *wlr_buffer, pixman_image_t **image_ptr,
uint32_t flags) {
pixman_image_t *image = *image_ptr;
void *data = NULL;
uint32_t drm_format;
size_t stride;
if (!wlr_buffer_begin_data_ptr_access(wlr_buffer, flags,
&data, &drm_format, &stride)) {
return false;
}
// If the data pointer has changed, re-create the Pixman image. This can
// happen if it's a client buffer and the wl_shm_pool has been resized.
if (data != pixman_image_get_data(image)) {
pixman_format_code_t format = get_pixman_format_from_drm(drm_format);
assert(format != 0);
pixman_image_t *new_image = pixman_image_create_bits_no_clear(format,
wlr_buffer->width, wlr_buffer->height, data, stride);
if (image == NULL) {
wlr_buffer_end_data_ptr_access(wlr_buffer);
return false;
}
pixman_image_unref(image);
image = new_image;
}
*image_ptr = image;
return true;
}
static struct wlr_pixman_buffer *get_buffer(
struct wlr_pixman_renderer *renderer, struct wlr_buffer *wlr_buffer) {
struct wlr_pixman_buffer *buffer;
@ -136,33 +169,8 @@ static bool pixman_begin(struct wlr_renderer *wlr_renderer, uint32_t width,
struct wlr_pixman_buffer *buffer = renderer->current_buffer;
assert(buffer != NULL);
void *data = NULL;
uint32_t drm_format;
size_t stride;
if (!wlr_buffer_begin_data_ptr_access(buffer->buffer,
WLR_BUFFER_DATA_PTR_ACCESS_READ | WLR_BUFFER_DATA_PTR_ACCESS_WRITE,
&data, &drm_format, &stride)) {
return false;
}
// If the data pointer has changed, re-create the Pixman image. This can
// happen if it's a client buffer and the wl_shm_pool has been resized.
if (data != pixman_image_get_data(buffer->image)) {
pixman_format_code_t format = get_pixman_format_from_drm(drm_format);
assert(format != 0);
pixman_image_t *image = pixman_image_create_bits_no_clear(format,
buffer->buffer->width, buffer->buffer->height, data, stride);
if (image == NULL) {
wlr_buffer_end_data_ptr_access(buffer->buffer);
return false;
}
pixman_image_unref(buffer->image);
buffer->image = image;
}
return true;
return begin_pixman_data_ptr_access(buffer->buffer, &buffer->image,
WLR_BUFFER_DATA_PTR_ACCESS_READ | WLR_BUFFER_DATA_PTR_ACCESS_WRITE);
}
static void pixman_end(struct wlr_renderer *wlr_renderer) {
@ -233,26 +241,9 @@ static bool pixman_render_subtexture_with_matrix(
struct wlr_pixman_texture *texture = get_texture(wlr_texture);
struct wlr_pixman_buffer *buffer = renderer->current_buffer;
if (texture->buffer != NULL) {
void *data;
uint32_t drm_format;
size_t stride;
if (!wlr_buffer_begin_data_ptr_access(texture->buffer,
WLR_BUFFER_DATA_PTR_ACCESS_READ, &data, &drm_format, &stride)) {
return false;
}
// If the data pointer has changed, re-create the Pixman image. This can
// happen if it's a client buffer and the wl_shm_pool has been resized.
if (data != pixman_image_get_data(texture->image)) {
pixman_format_code_t format = get_pixman_format_from_drm(drm_format);
assert(format != 0);
pixman_image_unref(texture->image);
texture->image = pixman_image_create_bits_no_clear(format,
texture->wlr_texture.width, texture->wlr_texture.height,
data, stride);
}
if (texture->buffer != NULL && !begin_pixman_data_ptr_access(texture->buffer,
&texture->image, WLR_BUFFER_DATA_PTR_ACCESS_READ)) {
return false;
}
pixman_image_t *mask = NULL;