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render/pixman: implement texture_from_buffer

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This commit is contained in:
Simon Ser 2021-04-26 19:41:43 +02:00 committed by Simon Zeni
parent 6e43d642b2
commit 625c66ef75
2 changed files with 94 additions and 15 deletions
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7
include/render/pixman.h
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@ -40,9 +40,12 @@ struct wlr_pixman_texture {
struct wlr_pixman_renderer *renderer;
struct wl_list link; // wlr_pixman_renderer.textures
void *data;
pixman_image_t *image;
const struct wlr_pixel_format_info *format;
pixman_format_code_t format;
const struct wlr_pixel_format_info *format_info;
void *data; // if created via texture_from_pixels
struct wlr_buffer *buffer; // if created via texture_from_buffer
};
pixman_format_code_t get_pixman_format_from_drm(uint32_t fmt);

102
render/pixman/renderer.c
View file

@ -39,13 +39,14 @@ static struct wlr_pixman_texture *get_texture(
static bool texture_is_opaque(struct wlr_texture *wlr_texture) {
struct wlr_pixman_texture *texture = get_texture(wlr_texture);
return texture->format->has_alpha;
return texture->format_info->has_alpha;
}
static void texture_destroy(struct wlr_texture *wlr_texture) {
struct wlr_pixman_texture *texture = get_texture(wlr_texture);
wl_list_remove(&texture->link);
pixman_image_unref(texture->image);
wlr_buffer_unlock(texture->buffer);
free(texture->data);
free(texture);
}
@ -215,6 +216,28 @@ 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 (!buffer_begin_data_ptr_access(texture->buffer, &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);
}
}
// TODO: don't create a mask if alpha == 1.0
struct pixman_color mask_colour = {0};
mask_colour.alpha = 0xFFFF * alpha;
@ -235,6 +258,10 @@ static bool pixman_render_subtexture_with_matrix(
buffer->image, 0, 0, 0, 0, 0, 0, renderer->width,
renderer->height);
if (texture->buffer != NULL) {
buffer_end_data_ptr_access(texture->buffer);
}
pixman_image_unref(mask);
return true;
@ -300,53 +327,101 @@ static const struct wlr_drm_format_set *pixman_get_render_formats(
return &renderer->drm_formats;
}
static struct wlr_texture *pixman_texture_from_pixels(
struct wlr_renderer *wlr_renderer, uint32_t drm_format,
uint32_t stride, uint32_t width, uint32_t height, const void *data) {
struct wlr_pixman_renderer *renderer = get_renderer(wlr_renderer);
static struct wlr_pixman_texture *pixman_texture_create(
struct wlr_pixman_renderer *renderer, uint32_t drm_format,
uint32_t width, uint32_t height) {
struct wlr_pixman_texture *texture =
calloc(1, sizeof(struct wlr_pixman_texture));
if (texture == NULL) {
wlr_log(WLR_ERROR, "Failed to allocate pixman texture");
wlr_log_errno(WLR_ERROR, "Failed to allocate pixman texture");
return NULL;
}
wlr_texture_init(&texture->wlr_texture, &texture_impl, width, height);
texture->renderer = renderer;
texture->format = drm_get_pixel_format_info(drm_format);
if (!texture->format) {
texture->format_info = drm_get_pixel_format_info(drm_format);
if (!texture->format_info) {
wlr_log(WLR_ERROR, "Unsupported drm format 0x%"PRIX32, drm_format);
free(texture);
return NULL;
}
pixman_format_code_t format = get_pixman_format_from_drm(drm_format);
if (format == 0) {
texture->format = get_pixman_format_from_drm(drm_format);
if (texture->format == 0) {
wlr_log(WLR_ERROR, "Unsupported pixman drm format 0x%"PRIX32,
drm_format);
free(texture);
return NULL;
}
wl_list_insert(&renderer->textures, &texture->link);
return texture;
}
static struct wlr_texture *pixman_texture_from_pixels(
struct wlr_renderer *wlr_renderer, uint32_t drm_format,
uint32_t stride, uint32_t width, uint32_t height, const void *data) {
struct wlr_pixman_renderer *renderer = get_renderer(wlr_renderer);
struct wlr_pixman_texture *texture =
pixman_texture_create(renderer, drm_format, width, height);
if (texture == NULL) {
return NULL;
}
// TODO: avoid this copy
texture->data = malloc(stride * height);
if (texture->data == NULL) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
wl_list_remove(&texture->link);
free(texture);
return NULL;
}
memcpy(texture->data, data, stride * height);
texture->image = pixman_image_create_bits_no_clear(format, width, height,
texture->data, stride);
texture->image = pixman_image_create_bits_no_clear(texture->format,
width, height, texture->data, stride);
if (!texture->image) {
wlr_log(WLR_ERROR, "Failed to create pixman image");
wl_list_remove(&texture->link);
free(texture->data);
free(texture);
return NULL;
}
wl_list_insert(&renderer->textures, &texture->link);
return &texture->wlr_texture;
}
static struct wlr_texture *pixman_texture_from_buffer(
struct wlr_renderer *wlr_renderer, struct wlr_buffer *buffer) {
struct wlr_pixman_renderer *renderer = get_renderer(wlr_renderer);
void *data = NULL;
uint32_t drm_format;
size_t stride;
if (!buffer_begin_data_ptr_access(buffer, &data, &drm_format, &stride)) {
return NULL;
}
buffer_end_data_ptr_access(buffer);
struct wlr_pixman_texture *texture = pixman_texture_create(renderer,
drm_format, buffer->width, buffer->height);
if (texture == NULL) {
return NULL;
}
texture->image = pixman_image_create_bits_no_clear(texture->format,
buffer->width, buffer->height, data, stride);
if (!texture->image) {
wlr_log(WLR_ERROR, "Failed to create pixman image");
wl_list_remove(&texture->link);
free(texture);
return NULL;
}
texture->buffer = wlr_buffer_lock(buffer);
return &texture->wlr_texture;
}
@ -449,6 +524,7 @@ static const struct wlr_renderer_impl renderer_impl = {
.get_shm_texture_formats = pixman_get_shm_texture_formats,
.get_render_formats = pixman_get_render_formats,
.texture_from_pixels = pixman_texture_from_pixels,
.texture_from_buffer = pixman_texture_from_buffer,
.bind_buffer = pixman_bind_buffer,
.destroy = pixman_destroy,
.preferred_read_format = pixman_preferred_read_format,