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mutter/src/tests/cogl-test-utils.c
Bilal Elmoussaoui 863163cc6e cogl: Port Texture* away from CoglObject 
- Make Texture a parent GObject class and move the vtable funcs as vfuncs
instead of an interface as we would like to have dispose free the TextureLoader.
- Make the various texture sub-types inherit from it.
- Make all the sub-types constructors return a CoglTexture instead of their respective
specific type. As most of the times, the used functions accept a CoglTexture,
like all the GTK widgets constructors returning GtkWidget.
- Fix up the basics of gi-docgen for all these types.
- Remove CoglPrimitiveTexture as it is useless: It is just a texture underhood.
- Remove CoglMetaTexture: for the exact same reason as above.
- Switch various memory management functions to use g_ variant instead of the cogl_ one

Note we would still want to get rid of the _cogl_texture_init which is something
for the next commit

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3193>
2023-10-29 21:16:24 +00:00

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/*
* Copyright (C) 2022 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include "tests/cogl-test-utils.h"
#include "backends/meta-backend-private.h"
static gboolean cogl_test_is_verbose;
CoglContext *test_ctx;
CoglFramebuffer *test_fb;
static gboolean
compare_component (int a, int b)
{
return ABS (a - b) <= 1;
}
void
test_utils_compare_pixel_and_alpha (const uint8_t *screen_pixel,
uint32_t expected_pixel)
{
/* Compare each component with a small fuzz factor */
if (!compare_component (screen_pixel[0], expected_pixel >> 24) ||
!compare_component (screen_pixel[1], (expected_pixel >> 16) & 0xff) ||
!compare_component (screen_pixel[2], (expected_pixel >> 8) & 0xff) ||
!compare_component (screen_pixel[3], (expected_pixel >> 0) & 0xff))
{
uint32_t screen_pixel_num = GUINT32_FROM_BE (*(uint32_t *) screen_pixel);
char *screen_pixel_string =
g_strdup_printf ("#%08x", screen_pixel_num);
char *expected_pixel_string =
g_strdup_printf ("#%08x", expected_pixel);
g_assert_cmpstr (screen_pixel_string, ==, expected_pixel_string);
g_free (screen_pixel_string);
g_free (expected_pixel_string);
}
}
void
test_utils_compare_pixel (const uint8_t *screen_pixel,
uint32_t expected_pixel)
{
/* Compare each component with a small fuzz factor */
if (!compare_component (screen_pixel[0], expected_pixel >> 24) ||
!compare_component (screen_pixel[1], (expected_pixel >> 16) & 0xff) ||
!compare_component (screen_pixel[2], (expected_pixel >> 8) & 0xff))
{
uint32_t screen_pixel_num = GUINT32_FROM_BE (*(uint32_t *) screen_pixel);
char *screen_pixel_string =
g_strdup_printf ("#%06x", screen_pixel_num >> 8);
char *expected_pixel_string =
g_strdup_printf ("#%06x", expected_pixel >> 8);
g_assert_cmpstr (screen_pixel_string, ==, expected_pixel_string);
g_free (screen_pixel_string);
g_free (expected_pixel_string);
}
}
void
test_utils_check_pixel (CoglFramebuffer *test_fb,
int x,
int y,
uint32_t expected_pixel)
{
uint8_t pixel[4];
cogl_framebuffer_read_pixels (test_fb,
x, y, 1, 1,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
pixel);
test_utils_compare_pixel (pixel, expected_pixel);
}
void
test_utils_check_pixel_and_alpha (CoglFramebuffer *test_fb,
int x,
int y,
uint32_t expected_pixel)
{
uint8_t pixel[4];
cogl_framebuffer_read_pixels (test_fb,
x, y, 1, 1,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
pixel);
test_utils_compare_pixel_and_alpha (pixel, expected_pixel);
}
void
test_utils_check_pixel_rgb (CoglFramebuffer *test_fb,
int x,
int y,
int r,
int g,
int b)
{
g_return_if_fail (r >= 0);
g_return_if_fail (g >= 0);
g_return_if_fail (b >= 0);
g_return_if_fail (r <= 0xFF);
g_return_if_fail (g <= 0xFF);
g_return_if_fail (b <= 0xFF);
test_utils_check_pixel (test_fb, x, y,
(((guint32) r) << 24) |
(((guint32) g) << 16) |
(((guint32) b) << 8));
}
void
test_utils_check_region (CoglFramebuffer *test_fb,
int x,
int y,
int width,
int height,
uint32_t expected_rgba)
{
uint8_t *pixels, *p;
pixels = p = g_malloc (width * height * 4);
cogl_framebuffer_read_pixels (test_fb,
x,
y,
width,
height,
COGL_PIXEL_FORMAT_RGBA_8888,
p);
/* Check whether the center of each division is the right color */
for (y = 0; y < height; y++)
{
for (x = 0; x < width; x++)
{
test_utils_compare_pixel (p, expected_rgba);
p += 4;
}
}
g_free (pixels);
}
CoglTexture *
test_utils_create_color_texture (CoglContext *context,
uint32_t color)
{
CoglTexture *tex_2d;
color = GUINT32_TO_BE (color);
tex_2d = cogl_texture_2d_new_from_data (context,
1, 1, /* width/height */
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
4, /* rowstride */
(uint8_t *) &color,
NULL);
return tex_2d;
}
gboolean
cogl_test_verbose (void)
{
return cogl_test_is_verbose;
}
static void
set_auto_mipmap_cb (CoglTexture *sub_texture,
const float *sub_texture_coords,
const float *meta_coords,
void *user_data)
{
cogl_primitive_texture_set_auto_mipmap (sub_texture, FALSE);
}
CoglTexture *
test_utils_texture_new_with_size (CoglContext *ctx,
int width,
int height,
TestUtilsTextureFlags flags,
CoglTextureComponents components)
{
CoglTexture *tex;
GError *skip_error = NULL;
/* First try creating a fast-path non-sliced texture */
tex = cogl_texture_2d_new_with_size (ctx, width, height);
cogl_texture_set_components (tex, components);
if (!cogl_texture_allocate (tex, &skip_error))
{
g_error_free (skip_error);
g_object_unref (tex);
tex = NULL;
}
if (!tex)
{
/* If it fails resort to sliced textures */
int max_waste = flags & TEST_UTILS_TEXTURE_NO_SLICING ?
-1 : COGL_TEXTURE_MAX_WASTE;
tex =
cogl_texture_2d_sliced_new_with_size (ctx,
width,
height,
max_waste);
cogl_texture_set_components (tex, components);
}
if (flags & TEST_UTILS_TEXTURE_NO_AUTO_MIPMAP)
{
/* To be able to iterate the slices of a #CoglTexture2DSliced we
* need to ensure the texture is allocated... */
cogl_texture_allocate (tex, NULL); /* don't catch exceptions */
cogl_meta_texture_foreach_in_region (tex,
0, 0, 1, 1,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE,
set_auto_mipmap_cb,
NULL); /* don't catch exceptions */
}
cogl_texture_allocate (tex, NULL);
return tex;
}
CoglTexture *
test_utils_texture_new_from_bitmap (CoglBitmap *bitmap,
TestUtilsTextureFlags flags,
gboolean premultiplied)
{
CoglTexture *atlas_tex;
CoglTexture *tex;
GError *internal_error = NULL;
if (!flags)
{
/* First try putting the texture in the atlas */
atlas_tex = cogl_atlas_texture_new_from_bitmap (bitmap);
cogl_texture_set_premultiplied (atlas_tex, premultiplied);
if (cogl_texture_allocate (atlas_tex, &internal_error))
return atlas_tex;
g_object_unref (atlas_tex);
}
g_clear_error (&internal_error);
/* If that doesn't work try a fast path 2D texture */
tex = cogl_texture_2d_new_from_bitmap (bitmap);
cogl_texture_set_premultiplied (tex, premultiplied);
if (g_error_matches (internal_error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_NO_MEMORY))
{
g_assert_not_reached ();
return NULL;
}
g_clear_error (&internal_error);
if (!tex)
{
/* Otherwise create a sliced texture */
int max_waste = flags & TEST_UTILS_TEXTURE_NO_SLICING ?
-1 : COGL_TEXTURE_MAX_WASTE;
tex =
cogl_texture_2d_sliced_new_from_bitmap (bitmap, max_waste);
cogl_texture_set_premultiplied (tex, premultiplied);
}
if (flags & TEST_UTILS_TEXTURE_NO_AUTO_MIPMAP)
{
cogl_meta_texture_foreach_in_region (tex,
0, 0, 1, 1,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE,
set_auto_mipmap_cb,
NULL); /* don't catch exceptions */
}
cogl_texture_allocate (tex, NULL);
return tex;
}
CoglTexture *
test_utils_texture_new_from_data (CoglContext *ctx,
int width,
int height,
TestUtilsTextureFlags flags,
CoglPixelFormat format,
int rowstride,
const uint8_t *data)
{
CoglBitmap *bmp;
CoglTexture *tex;
g_assert_cmpint (format, !=, COGL_PIXEL_FORMAT_ANY);
g_assert (data != NULL);
/* Wrap the data into a bitmap */
bmp = cogl_bitmap_new_for_data (ctx,
width, height,
format,
rowstride,
(uint8_t *) data);
tex = test_utils_texture_new_from_bitmap (bmp, flags, TRUE);
g_object_unref (bmp);
return tex;
}
static void
on_before_tests (MetaContext *context)
{
MetaBackend *backend = meta_context_get_backend (context);
ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
CoglOffscreen *offscreen;
CoglTexture *tex;
GError *error = NULL;
test_ctx = clutter_backend_get_cogl_context (clutter_backend);
tex = cogl_texture_2d_new_with_size (test_ctx, FB_WIDTH, FB_HEIGHT);
g_assert_nonnull (tex);
offscreen = cogl_offscreen_new_with_texture (tex);
g_assert_nonnull (offscreen);
test_fb = COGL_FRAMEBUFFER (offscreen);
if (!cogl_framebuffer_allocate (test_fb, &error))
g_error ("Failed to allocate framebuffer: %s", error->message);
cogl_framebuffer_clear4f (test_fb,
COGL_BUFFER_BIT_COLOR |
COGL_BUFFER_BIT_DEPTH |
COGL_BUFFER_BIT_STENCIL,
0, 0, 0, 1);
}
static void
on_after_tests (MetaContext *context)
{
g_clear_object (&test_fb);
}
MetaContext *
meta_create_cogl_test_context (int argc,
char **argv)
{
MetaContext *context = NULL;
context = meta_create_test_context (META_CONTEXT_TEST_TYPE_HEADLESS,
META_CONTEXT_TEST_FLAG_NO_X11);
g_assert (meta_context_configure (context, &argc, &argv, NULL));
if (g_strcmp0 ("COGL_TEST_VERBOSE", "1") == 0)
cogl_test_is_verbose = TRUE;
g_signal_connect (context, "before-tests",
G_CALLBACK (on_before_tests), NULL);
g_signal_connect (context, "after-tests",
G_CALLBACK (on_after_tests), NULL);
return context;
}
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