2019-05-22 07:33:25 +00:00
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#include "gskgliconcacheprivate.h"
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#include "gskgltextureatlasprivate.h"
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#include "gdk/gdktextureprivate.h"
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2019-06-04 21:27:09 +00:00
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#include "gdk/gdkglcontextprivate.h"
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2019-05-22 07:33:25 +00:00
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2019-06-02 16:47:57 +00:00
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#include <epoxy/gl.h>
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2019-05-22 07:33:25 +00:00
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#define MAX_FRAME_AGE (5 * 60)
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typedef struct
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{
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graphene_rect_t texture_rect;
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GskGLTextureAtlas *atlas;
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int frame_age; /* Number of frames this icon is unused */
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guint used: 1;
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} IconData;
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static void
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icon_data_free (gpointer p)
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{
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g_free (p);
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}
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GskGLIconCache *
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gsk_gl_icon_cache_new (GdkDisplay *display,
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GskGLTextureAtlases *atlases)
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{
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GskGLIconCache *self;
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self = g_new0 (GskGLIconCache, 1);
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self->display = display;
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self->icons = g_hash_table_new_full (NULL, NULL, NULL, icon_data_free);
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self->atlases = gsk_gl_texture_atlases_ref (atlases);
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self->ref_count = 1;
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return self;
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}
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GskGLIconCache *
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gsk_gl_icon_cache_ref (GskGLIconCache *self)
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{
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self->ref_count++;
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return self;
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}
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void
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gsk_gl_icon_cache_unref (GskGLIconCache *self)
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{
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g_assert (self->ref_count > 0);
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if (self->ref_count == 1)
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{
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gsk_gl_texture_atlases_unref (self->atlases);
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g_hash_table_unref (self->icons);
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g_free (self);
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return;
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}
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self->ref_count--;
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}
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void
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gsk_gl_icon_cache_begin_frame (GskGLIconCache *self)
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{
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GHashTableIter iter;
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GdkTexture *texture;
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IconData *icon_data;
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/* Increase frame age of all icons */
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g_hash_table_iter_init (&iter, self->icons);
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while (g_hash_table_iter_next (&iter, (gpointer *)&texture, (gpointer *)&icon_data))
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{
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guint pos;
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if (!g_ptr_array_find (self->atlases->atlases, icon_data->atlas, &pos))
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{
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g_hash_table_iter_remove (&iter);
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}
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else
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{
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icon_data->frame_age ++;
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if (icon_data->frame_age > MAX_FRAME_AGE)
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{
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if (icon_data->used)
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{
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const int w = icon_data->texture_rect.size.width * icon_data->atlas->width;
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const int h = icon_data->texture_rect.size.height * icon_data->atlas->height;
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gsk_gl_texture_atlas_mark_unused (icon_data->atlas, w + 2, h + 2);
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icon_data->used = FALSE;
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}
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/* We do NOT remove the icon here. Instead, We wait until we drop the entire atlas.
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* This way we can revive it when we use it again. */
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}
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}
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}
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}
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2019-06-02 17:59:25 +00:00
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/* FIXME: this could probably be done more efficiently */
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static cairo_surface_t *
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pad_surface (cairo_surface_t *surface)
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{
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cairo_surface_t *padded;
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cairo_t *cr;
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cairo_pattern_t *pattern;
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cairo_matrix_t matrix;
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padded = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
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cairo_image_surface_get_width (surface) + 2,
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cairo_image_surface_get_height (surface) + 2);
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cr = cairo_create (padded);
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pattern = cairo_pattern_create_for_surface (surface);
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cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
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cairo_matrix_init_translate (&matrix, -1, -1);
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cairo_pattern_set_matrix (pattern, &matrix);
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cairo_set_source (cr, pattern);
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cairo_paint (cr);
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cairo_destroy (cr);
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cairo_pattern_destroy (pattern);
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return padded;
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}
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static void
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upload_region_or_else (GskGLIconCache *self,
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guint texture_id,
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GskImageRegion *region)
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{
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glBindTexture (GL_TEXTURE_2D, texture_id);
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glTextureSubImage2D (texture_id, 0, region->x, region->y, region->width, region->height,
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GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, region->data);
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}
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void
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gsk_gl_icon_cache_lookup_or_add (GskGLIconCache *self,
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GdkTexture *texture,
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int *out_texture_id,
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graphene_rect_t *out_texture_rect)
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{
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IconData *icon_data = g_hash_table_lookup (self->icons, texture);
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if (icon_data)
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{
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icon_data->frame_age = 0;
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if (!icon_data->used)
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{
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const int w = icon_data->texture_rect.size.width * icon_data->atlas->width;
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const int h = icon_data->texture_rect.size.height * icon_data->atlas->height;
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gsk_gl_texture_atlas_mark_used (icon_data->atlas, w + 2, h + 2);
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icon_data->used = TRUE;
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}
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*out_texture_id = icon_data->atlas->texture_id;
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*out_texture_rect = icon_data->texture_rect;
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return;
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}
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/* texture not on any atlas yet. Find a suitable one. */
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{
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const int width = gdk_texture_get_width (texture);
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const int height = gdk_texture_get_height (texture);
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GskGLTextureAtlas *atlas = NULL;
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int packed_x = 0;
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int packed_y = 0;
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GskImageRegion region;
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cairo_surface_t *surface;
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cairo_surface_t *padded_surface;
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gsk_gl_texture_atlases_pack (self->atlases, width + 2, height + 2, &atlas, &packed_x, &packed_y);
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icon_data = g_new0 (IconData, 1);
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icon_data->atlas = atlas;
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icon_data->frame_age = 0;
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icon_data->used = TRUE;
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graphene_rect_init (&icon_data->texture_rect,
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(float)(packed_x + 1) / atlas->width,
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(float)(packed_y + 1) / atlas->height,
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(float)width / atlas->width,
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(float)height / atlas->height);
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g_hash_table_insert (self->icons, texture, icon_data);
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/* actually upload the texture */
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surface = gdk_texture_download_surface (texture);
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padded_surface = pad_surface (surface);
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region.x = packed_x;
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region.y = packed_y;
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region.width = width + 2;
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region.height = height + 2;
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region.data = cairo_image_surface_get_data (padded_surface);
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gdk_gl_context_push_debug_group_printf (gdk_gl_context_get_current (),
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"Uploading texture");
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upload_region_or_else (self, atlas->texture_id, ®ion);
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gdk_gl_context_pop_debug_group (gdk_gl_context_get_current ());
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*out_texture_id = atlas->texture_id;
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*out_texture_rect = icon_data->texture_rect;
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cairo_surface_destroy (surface);
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cairo_surface_destroy (padded_surface);
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#if 0
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/* Some obvious debugging */
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static int k;
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gsk_gl_image_write_to_png (&atlas->image, self->gl_driver,
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g_strdup_printf ("icon%d.png", k ++));
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#endif
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}
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}
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