mutter/tests/conform/test-sub-texture.c
Robert Bragg b5a7657076 Starts porting Cogl conformance tests from Clutter
This makes a start on porting the Cogl conformance tests that currently
still live in the Clutter repository to be standalone Cogl tests that no
longer require a ClutterStage.

The main thing is that this commit brings in is the basic testing
infrastructure we need, so now we can port more and more tests
incrementally.

Since the test suite wants a way to synchronize X requests/replies and
we can't simply call XSynchronize in the test-utils code before we know
if we are really running on X this adds a check for an environment
variable named "COGL_X11_SYNC" in cogl-xlib-renderer.c and if it's set
it forces XSynchronize (dpy, TRUE) to be called.

By default the conformance tests are run off screen. This makes the
tests run much faster and they also don't interfere with other work you
may want to do by constantly stealing focus. CoglOnscreen framebuffers
obviously don't get tested this way so it's important that the tests
also get run on screen every once in a while, especially if changes are
being made to CoglFramebuffer related code.  On screen testing can be
enabled by setting COGL_TEST_ONSCREEN=1 in your environment.
2011-09-08 15:48:07 +01:00

372 lines
12 KiB
C

#include <clutter/clutter.h>
#include <cogl/cogl.h>
#include <string.h>
#include "test-conform-common.h"
#define SOURCE_SIZE 32
#define SOURCE_DIVISIONS_X 2
#define SOURCE_DIVISIONS_Y 2
#define DIVISION_WIDTH (SOURCE_SIZE / SOURCE_DIVISIONS_X)
#define DIVISION_HEIGHT (SOURCE_SIZE / SOURCE_DIVISIONS_Y)
#define TEST_INSET 1
static const ClutterColor
corner_colors[SOURCE_DIVISIONS_X * SOURCE_DIVISIONS_Y] =
{
{ 0xff, 0x00, 0x00, 0xff }, /* red top left */
{ 0x00, 0xff, 0x00, 0xff }, /* green top right */
{ 0x00, 0x00, 0xff, 0xff }, /* blue bottom left */
{ 0xff, 0x00, 0xff, 0xff } /* purple bottom right */
};
static const ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff };
typedef struct _TestState
{
ClutterActor *stage;
unsigned int frame;
CoglHandle tex;
} TestState;
static CoglHandle
create_source (void)
{
int dx, dy;
guchar *data = g_malloc (SOURCE_SIZE * SOURCE_SIZE * 4);
/* Create a texture with a different coloured rectangle at each
corner */
for (dy = 0; dy < SOURCE_DIVISIONS_Y; dy++)
for (dx = 0; dx < SOURCE_DIVISIONS_X; dx++)
{
guchar *p = (data + dy * DIVISION_HEIGHT * SOURCE_SIZE * 4 +
dx * DIVISION_WIDTH * 4);
int x, y;
for (y = 0; y < DIVISION_HEIGHT; y++)
{
for (x = 0; x < DIVISION_WIDTH; x++)
{
memcpy (p, corner_colors + dx + dy * SOURCE_DIVISIONS_X, 4);
p += 4;
}
p += SOURCE_SIZE * 4 - DIVISION_WIDTH * 4;
}
}
return cogl_texture_new_from_data (SOURCE_SIZE, SOURCE_SIZE,
COGL_TEXTURE_NONE,
COGL_PIXEL_FORMAT_RGBA_8888,
COGL_PIXEL_FORMAT_ANY,
SOURCE_SIZE * 4,
data);
}
static CoglHandle
create_test_texture (void)
{
CoglHandle tex;
guint8 *data = g_malloc (256 * 256 * 4), *p = data;
int x, y;
/* Create a texture that is 256x256 where the red component ranges
from 0->255 along the x axis and the green component ranges from
0->255 along the y axis. The blue and alpha components are all
255 */
for (y = 0; y < 256; y++)
for (x = 0; x < 256; x++)
{
*(p++) = x;
*(p++) = y;
*(p++) = 255;
*(p++) = 255;
}
tex = cogl_texture_new_from_data (256, 256, COGL_TEXTURE_NONE,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
COGL_PIXEL_FORMAT_ANY,
256 * 4,
data);
g_free (data);
return tex;
}
static void
draw_frame (TestState *state)
{
CoglHandle full_texture, sub_texture, sub_sub_texture;
/* Create a sub texture of the bottom right quarter of the texture */
sub_texture = cogl_texture_new_from_sub_texture (state->tex,
DIVISION_WIDTH,
DIVISION_HEIGHT,
DIVISION_WIDTH,
DIVISION_HEIGHT);
/* Paint it */
cogl_set_source_texture (sub_texture);
cogl_rectangle (0.0f, 0.0f, DIVISION_WIDTH, DIVISION_HEIGHT);
cogl_handle_unref (sub_texture);
/* Repeat a sub texture of the top half of the full texture. This is
documented to be undefined so it doesn't technically have to work
but it will with the current implementation */
sub_texture = cogl_texture_new_from_sub_texture (state->tex,
0, 0,
SOURCE_SIZE,
DIVISION_HEIGHT);
cogl_set_source_texture (sub_texture);
cogl_rectangle_with_texture_coords (0.0f, SOURCE_SIZE,
SOURCE_SIZE * 2.0f, SOURCE_SIZE * 1.5f,
0.0f, 0.0f,
2.0f, 1.0f);
cogl_handle_unref (sub_texture);
/* Create a sub texture of a sub texture */
full_texture = create_test_texture ();
sub_texture = cogl_texture_new_from_sub_texture (full_texture,
20, 10, 30, 20);
sub_sub_texture = cogl_texture_new_from_sub_texture (sub_texture,
20, 10, 10, 10);
cogl_set_source_texture (sub_sub_texture);
cogl_rectangle (0.0f, SOURCE_SIZE * 2.0f,
10.0f, SOURCE_SIZE * 2.0f + 10.0f);
cogl_handle_unref (sub_sub_texture);
cogl_handle_unref (sub_texture);
cogl_handle_unref (full_texture);
}
static gboolean
validate_part (TestState *state,
int xpos, int ypos,
int width, int height,
const ClutterColor *color)
{
int x, y;
gboolean pass = TRUE;
guchar *pixels, *p;
p = pixels = clutter_stage_read_pixels (CLUTTER_STAGE (state->stage),
xpos + TEST_INSET,
ypos + TEST_INSET,
width - TEST_INSET - 2,
height - TEST_INSET - 2);
/* Check whether the center of each division is the right color */
for (y = 0; y < height - TEST_INSET - 2; y++)
for (x = 0; x < width - TEST_INSET - 2; x++)
{
if (p[0] != color->red ||
p[1] != color->green ||
p[2] != color->blue)
pass = FALSE;
p += 4;
}
return pass;
}
static guint8 *
create_update_data (void)
{
guint8 *data = g_malloc (256 * 256 * 4), *p = data;
int x, y;
/* Create some image data that is 256x256 where the blue component
ranges from 0->255 along the x axis and the alpha component
ranges from 0->255 along the y axis. The red and green components
are all zero */
for (y = 0; y < 256; y++)
for (x = 0; x < 256; x++)
{
*(p++) = 0;
*(p++) = 0;
*(p++) = x;
*(p++) = y;
}
return data;
}
static void
validate_result (TestState *state)
{
int i, division_num, x, y;
CoglHandle sub_texture, test_tex;
guchar *texture_data, *p;
int tex_width, tex_height;
/* Sub texture of the bottom right corner of the texture */
g_assert (validate_part (state, 0, 0, DIVISION_WIDTH, DIVISION_HEIGHT,
corner_colors +
(SOURCE_DIVISIONS_Y - 1) * SOURCE_DIVISIONS_X +
SOURCE_DIVISIONS_X - 1));
/* Sub texture of the top half repeated horizontally */
for (i = 0; i < 2; i++)
for (division_num = 0; division_num < SOURCE_DIVISIONS_X; division_num++)
g_assert (validate_part (state,
i * SOURCE_SIZE + division_num * DIVISION_WIDTH,
SOURCE_SIZE,
DIVISION_WIDTH, DIVISION_HEIGHT,
corner_colors + division_num));
/* Sub sub texture */
p = texture_data = clutter_stage_read_pixels (CLUTTER_STAGE (state->stage),
0, SOURCE_SIZE * 2, 10, 10);
for (y = 0; y < 10; y++)
for (x = 0; x < 10; x++)
{
g_assert (*(p++) == x + 40);
g_assert (*(p++) == y + 20);
p += 2;
}
g_free (texture_data);
/* Try reading back the texture data */
sub_texture = cogl_texture_new_from_sub_texture (state->tex,
SOURCE_SIZE / 4,
SOURCE_SIZE / 4,
SOURCE_SIZE / 2,
SOURCE_SIZE / 2);
tex_width = cogl_texture_get_width (sub_texture);
tex_height = cogl_texture_get_height (sub_texture);
p = texture_data = g_malloc (tex_width * tex_height * 4);
cogl_texture_get_data (sub_texture, COGL_PIXEL_FORMAT_RGBA_8888,
tex_width * 4,
texture_data);
for (y = 0; y < tex_height; y++)
for (x = 0; x < tex_width; x++)
{
int div_x = ((x * SOURCE_SIZE / 2 / tex_width + SOURCE_SIZE / 4) /
DIVISION_WIDTH);
int div_y = ((y * SOURCE_SIZE / 2 / tex_height + SOURCE_SIZE / 4) /
DIVISION_HEIGHT);
const ClutterColor *color = (corner_colors + div_x +
div_y * SOURCE_DIVISIONS_X);
g_assert (p[0] == color->red);
g_assert (p[1] == color->green);
g_assert (p[2] == color->blue);
p += 4;
}
g_free (texture_data);
cogl_handle_unref (sub_texture);
/* Create a 256x256 test texture */
test_tex = create_test_texture ();
/* Create a sub texture the views the center half of the texture */
sub_texture = cogl_texture_new_from_sub_texture (test_tex,
64, 64, 128, 128);
/* Update the center half of the sub texture */
texture_data = create_update_data ();
cogl_texture_set_region (sub_texture, 0, 0, 32, 32, 64, 64, 256, 256,
COGL_PIXEL_FORMAT_RGBA_8888_PRE, 256 * 4,
texture_data);
g_free (texture_data);
cogl_handle_unref (sub_texture);
/* Get the texture data */
p = texture_data = g_malloc (256 * 256 * 4);
cogl_texture_get_data (test_tex, COGL_PIXEL_FORMAT_RGBA_8888,
256 * 4, texture_data);
/* Verify the texture data */
for (y = 0; y < 256; y++)
for (x = 0; x < 256; x++)
{
/* If we're in the center quarter */
if (x >= 96 && x < 160 && y >= 96 && y < 160)
{
g_assert ((*p++) == 0);
g_assert ((*p++) == 0);
g_assert ((*p++) == x - 96);
g_assert ((*p++) == y - 96);
}
else
{
g_assert ((*p++) == x);
g_assert ((*p++) == y);
g_assert ((*p++) == 255);
g_assert ((*p++) == 255);
}
}
g_free (texture_data);
cogl_handle_unref (test_tex);
/* Comment this out to see what the test paints */
clutter_main_quit ();
}
static void
on_paint (ClutterActor *actor, TestState *state)
{
int frame_num;
draw_frame (state);
/* XXX: validate_result calls clutter_stage_read_pixels which will result in
* another paint run so to avoid infinite recursion we only aim to validate
* the first frame. */
frame_num = state->frame++;
if (frame_num == 1)
validate_result (state);
}
static gboolean
queue_redraw (gpointer stage)
{
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
return TRUE;
}
void
test_cogl_sub_texture (TestUtilsGTestFixture *fixture,
void *data)
{
TestState state;
unsigned int idle_source;
unsigned int paint_handler;
state.frame = 0;
state.stage = clutter_stage_get_default ();
state.tex = create_source ();
clutter_stage_set_color (CLUTTER_STAGE (state.stage), &stage_color);
/* We force continuous redrawing of the stage, since we need to skip
* the first few frames, and we wont be doing anything else that
* will trigger redrawing. */
idle_source = g_idle_add (queue_redraw, state.stage);
paint_handler = g_signal_connect_after (state.stage, "paint",
G_CALLBACK (on_paint), &state);
clutter_actor_show_all (state.stage);
clutter_main ();
g_source_remove (idle_source);
g_signal_handler_disconnect (state.stage, paint_handler);
cogl_handle_unref (state.tex);
/* Remove all of the actors from the stage */
clutter_container_foreach (CLUTTER_CONTAINER (state.stage),
(ClutterCallback) clutter_actor_destroy,
NULL);
if (g_test_verbose ())
g_print ("OK\n");
}