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ngl: Add code to dump shadows

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This can be helpful in understanding shadow bugs.
This commit is contained in:
Matthias Clasen 2021-04-11 21:13:47 -04:00
parent 6712106c25
commit da6096faaf
1 changed files with 33 additions and 0 deletions
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33
gsk/ngl/gsknglshadowlibrary.c
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@ -202,6 +202,31 @@ gsk_ngl_shadow_library_lookup (GskNglShadowLibrary *self,
return ret->texture_id;
}
#if 0
static void
write_shadow_to_png (const Shadow *shadow)
{
int width = shadow->outline.bounds.size.width + (shadow->outline.bounds.origin.x * 2);
int height = shadow->outline.bounds.size.height + (shadow->outline.bounds.origin.y * 2);
int stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, width);
guchar *data = g_malloc (height * stride);
cairo_surface_t *s;
char *filename = g_strdup_printf ("shadow_cache_%d_%d_%d.png",
width, height, shadow->texture_id);
glBindTexture (GL_TEXTURE_2D, shadow->texture_id);
glGetTexImage (GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, data);
s = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_ARGB32,
width, height,
stride);
cairo_surface_write_to_png (s, filename);
cairo_surface_destroy (s);
g_free (data);
g_free (filename);
}
#endif
void
gsk_ngl_shadow_library_begin_frame (GskNglShadowLibrary *self)
{
@ -211,6 +236,14 @@ gsk_ngl_shadow_library_begin_frame (GskNglShadowLibrary *self)
g_return_if_fail (GSK_IS_NGL_SHADOW_LIBRARY (self));
#if 0
for (i = 0, p = self->shadows->len; i < p; i++)
{
const Shadow *shadow = &g_array_index (self->shadows, Shadow, i);
write_shadow_to_png (shadow);
}
#endif
watermark = self->driver->current_frame_id - MAX_UNUSED_FRAMES;
for (i = 0, p = self->shadows->len; i < p; i++)