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compare-render: Create colorflipped reference without gdk-pixbuf

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We use the renderer to create the reference for the colorflip test by
applying the same colorflip matrix to the reference image instead of the
tested node.

This is somewhat suboptimal because they run very similar codepaths, but
this method works with high bit depth content and different colorstates
This commit is contained in:
Benjamin Otte 2024-08-27 22:47:44 +02:00
parent f598ec00f5
commit 3dac4a01c6
1 changed files with 11 additions and 34 deletions
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45
testsuite/gsk/compare-render.c
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@ -252,33 +252,6 @@ apply_mask_to_pixbuf (GdkPixbuf *pixbuf)
return copy;
}
static GdkPixbuf *
apply_colorflip_to_pixbuf (GdkPixbuf *pixbuf)
{
GdkPixbuf *copy;
int width, height;
copy = gdk_pixbuf_add_alpha (pixbuf, FALSE, 0, 0, 0);
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
for (unsigned int j = 0; j < height; j++)
{
guint8 *row = gdk_pixbuf_get_pixels (copy) + j * gdk_pixbuf_get_rowstride (copy);
for (unsigned int i = 0; i < width; i++)
{
guint8 *p = row + i * 4;
guint8 q;
q = p[0];
p[0] = p[1];
p[1] = q;
}
}
return copy;
}
static void
make_random_clip (const graphene_rect_t *bounds,
cairo_rectangle_int_t *int_clip)
@ -706,8 +679,7 @@ skip_clip:
if (colorflip)
{
GskRenderNode *node2;
GdkPixbuf *pixbuf, *pixbuf2;
GskRenderNode *node2, *texture_node, *reference_node;
GdkTexture *colorflipped_reference;
graphene_matrix_t matrix;
@ -724,11 +696,14 @@ skip_clip:
rendered_texture = gsk_renderer_render_texture (renderer, node2, NULL);
save_image (rendered_texture, test->node_file, "colorflipped", ".out.png");
pixbuf = pixbuf_new_from_texture (reference_texture);
pixbuf2 = apply_colorflip_to_pixbuf (pixbuf);
colorflipped_reference = gdk_texture_new_for_pixbuf (pixbuf2);
g_object_unref (pixbuf2);
g_object_unref (pixbuf);
texture_node = gsk_texture_node_new (reference_texture,
&GRAPHENE_RECT_INIT (
0, 0,
gdk_texture_get_width (reference_texture),
gdk_texture_get_height (reference_texture)
));
reference_node = gsk_color_matrix_node_new (texture_node, &matrix, graphene_vec4_zero ());
colorflipped_reference = gsk_renderer_render_texture (renderer, reference_node, NULL);
save_image (colorflipped_reference, test->node_file, "colorflipped", ".ref.png");
@ -743,6 +718,8 @@ skip_clip:
g_clear_object (&diff_texture);
g_clear_object (&rendered_texture);
g_clear_object (&colorflipped_reference);
gsk_render_node_unref (texture_node);
gsk_render_node_unref (reference_node);
gsk_render_node_unref (node2);
}