mirror of
https://github.com/brl/mutter.git
synced 2024-12-02 12:50:53 -05:00
27c4eb483d
This tests creating a sub texture from a larger texture using various different texture coordinates. It also tries to read back the texture data using cogl_texture_get_data.
389 lines
12 KiB
C
389 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;
|
|
guint 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 void
|
|
draw_frame (TestState *state)
|
|
{
|
|
CoglHandle sub_texture;
|
|
|
|
/* Create a sub texture of the bottom right quarter of the texture */
|
|
sub_texture = cogl_texture_new_from_sub_texture (state->tex,
|
|
1.0f / SOURCE_DIVISIONS_X,
|
|
1.0f / SOURCE_DIVISIONS_Y,
|
|
1.0f, 1.0f);
|
|
|
|
/* 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 */
|
|
sub_texture = cogl_texture_new_from_sub_texture (state->tex,
|
|
0.0f, 0.0f, 1.0f, 0.5f);
|
|
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 texture that repeats the source texture twice */
|
|
sub_texture = cogl_texture_new_from_sub_texture (state->tex,
|
|
0.0f, 0.0f, 2.0f, 2.0f);
|
|
cogl_set_source_texture (sub_texture);
|
|
cogl_rectangle (0.0f, SOURCE_SIZE * 2, SOURCE_SIZE * 2, SOURCE_SIZE * 4);
|
|
cogl_handle_unref (sub_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 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 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;
|
|
gint 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 texture that repeats the texture (the opposite of a sub-texture?) */
|
|
for (y = 0; y < SOURCE_DIVISIONS_Y * 2; y++)
|
|
for (x = 0; x < SOURCE_DIVISIONS_X * 2; x++)
|
|
{
|
|
guint color_num = (y % SOURCE_DIVISIONS_Y * SOURCE_DIVISIONS_X +
|
|
x % SOURCE_DIVISIONS_X);
|
|
g_assert (validate_part (state,
|
|
x * DIVISION_WIDTH,
|
|
y * DIVISION_WIDTH + SOURCE_SIZE * 2,
|
|
DIVISION_WIDTH, DIVISION_HEIGHT,
|
|
corner_colors + color_num));
|
|
}
|
|
|
|
/* Try reading back the texture data */
|
|
sub_texture = cogl_texture_new_from_sub_texture (state->tex,
|
|
0.25f, 0.25f, 0.75f, 0.75f);
|
|
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);
|
|
|
|
/* Try reading back the repeated texture data */
|
|
sub_texture = cogl_texture_new_from_sub_texture (state->tex,
|
|
0.0f, 0.0f, 2.0f, 2.0f);
|
|
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 / DIVISION_WIDTH % SOURCE_DIVISIONS_X;
|
|
int div_y = y / DIVISION_HEIGHT % SOURCE_DIVISIONS_Y;
|
|
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 bottom right and top left of
|
|
the texture by wrapping around */
|
|
sub_texture = cogl_texture_new_from_sub_texture (test_tex,
|
|
0.5f, 0.5f, 1.5f, 1.5f);
|
|
/* Update the center of the sub texture */
|
|
texture_data = create_update_data ();
|
|
cogl_texture_set_region (sub_texture, 0, 0, 64, 64, 128, 128, 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 of the subregion.. */
|
|
if ((x < 64 || x >= 192) && (y < 64 || y >= 192))
|
|
{
|
|
g_assert ((*p++) == 0);
|
|
g_assert ((*p++) == 0);
|
|
g_assert ((*p++) == ((x + 64) & 0xff));
|
|
g_assert ((*p++) == ((y + 64) & 0xff));
|
|
}
|
|
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: Experiments have shown that for some buggy drivers, when using
|
|
* glReadPixels there is some kind of race, so we delay our test for a
|
|
* few frames and a few seconds:
|
|
*/
|
|
/* Need to increment frame first because clutter_stage_read_pixels
|
|
fires a redraw */
|
|
frame_num = state->frame++;
|
|
if (frame_num == 2)
|
|
validate_result (state);
|
|
else if (frame_num < 2)
|
|
g_usleep (G_USEC_PER_SEC);
|
|
}
|
|
|
|
static gboolean
|
|
queue_redraw (gpointer stage)
|
|
{
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
test_cogl_sub_texture (TestConformSimpleFixture *fixture,
|
|
gconstpointer data)
|
|
{
|
|
TestState state;
|
|
guint idle_source;
|
|
guint 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");
|
|
}
|
|
|