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#include <cogl/cogl.h>
#include <stdarg.h>
#include "test-utils.h"
/*
* This tests reading back an RGBA texture in all of the available
* pixel formats
*/
static const uint8_t tex_data[4] = { 0x12, 0x34, 0x56, 0x78 };
static void
test_read_byte (CoglTexture2D *tex_2d,
CoglPixelFormat format,
uint8_t expected_byte)
{
uint8_t received_byte;
cogl_texture_get_data (tex_2d,
format,
1, /* rowstride */
&received_byte);
g_assert_cmpint (expected_byte, ==, received_byte);
}
static void
test_read_short (CoglTexture2D *tex_2d,
CoglPixelFormat format,
...)
{
va_list ap;
int bits;
uint16_t received_value;
uint16_t expected_value = 0;
char *received_value_str;
char *expected_value_str;
int bits_sum = 0;
cogl_texture_get_data (tex_2d,
format,
2, /* rowstride */
(uint8_t *) &received_value);
va_start (ap, format);
/* Convert the va args into a single 16-bit expected value */
while ((bits = va_arg (ap, int)) != -1)
{
int value = (va_arg (ap, int) * ((1 << bits) - 1) + 128) / 255;
bits_sum += bits;
expected_value |= value << (16 - bits_sum);
}
va_end (ap);
received_value_str = g_strdup_printf ("0x%04x", received_value);
expected_value_str = g_strdup_printf ("0x%04x", expected_value);
g_assert_cmpstr (received_value_str, ==, expected_value_str);
g_free (received_value_str);
g_free (expected_value_str);
}
static void
test_read_888 (CoglTexture2D *tex_2d,
CoglPixelFormat format,
uint32_t expected_pixel)
{
uint8_t pixel[4];
cogl_texture_get_data (tex_2d,
format,
4, /* rowstride */
pixel);
test_utils_compare_pixel (pixel, expected_pixel);
}
static void
test_read_8888 (CoglTexture2D *tex_2d,
CoglPixelFormat format,
uint32_t expected_pixel)
{
uint32_t received_pixel;
char *received_value_str;
char *expected_value_str;
cogl_texture_get_data (tex_2d,
format,
4, /* rowstride */
(uint8_t *) &received_pixel);
received_pixel = GUINT32_FROM_BE (received_pixel);
received_value_str = g_strdup_printf ("0x%08x", received_pixel);
expected_value_str = g_strdup_printf ("0x%08x", expected_pixel);
g_assert_cmpstr (received_value_str, ==, expected_value_str);
g_free (received_value_str);
g_free (expected_value_str);
}
static void
test_read_int (CoglTexture2D *tex_2d,
CoglPixelFormat format,
...)
{
va_list ap;
int bits;
uint32_t received_value;
uint32_t expected_value = 0;
char *received_value_str;
char *expected_value_str;
int bits_sum = 0;
cogl_texture_get_data (tex_2d,
format,
4, /* rowstride */
(uint8_t *) &received_value);
va_start (ap, format);
/* Convert the va args into a single 32-bit expected value */
while ((bits = va_arg (ap, int)) != -1)
{
uint32_t value = (va_arg (ap, int) * ((1 << bits) - 1) + 128) / 255;
bits_sum += bits;
expected_value |= value << (32 - bits_sum);
}
va_end (ap);
received_value_str = g_strdup_printf ("0x%08x", received_value);
expected_value_str = g_strdup_printf ("0x%08x", expected_value);
g_assert_cmpstr (received_value_str, ==, expected_value_str);
g_free (received_value_str);
g_free (expected_value_str);
}
void
test_read_texture_formats (void)
{
CoglTexture2D *tex_2d;
tex_2d = cogl_texture_2d_new_from_data (test_ctx,
1, 1, /* width / height */
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
4, /* rowstride */
tex_data,
NULL);
test_read_byte (tex_2d, COGL_PIXEL_FORMAT_A_8, 0x78);
test_read_short (tex_2d, COGL_PIXEL_FORMAT_RGB_565,
5, 0x12, 6, 0x34, 5, 0x56,
-1);
test_read_short (tex_2d, COGL_PIXEL_FORMAT_RGBA_4444_PRE,
4, 0x12, 4, 0x34, 4, 0x56, 4, 0x78,
-1);
test_read_short (tex_2d, COGL_PIXEL_FORMAT_RGBA_5551_PRE,
5, 0x12, 5, 0x34, 5, 0x56, 1, 0x78,
-1);
test_read_888 (tex_2d, COGL_PIXEL_FORMAT_RGB_888, 0x123456ff);
test_read_888 (tex_2d, COGL_PIXEL_FORMAT_BGR_888, 0x563412ff);
test_read_8888 (tex_2d, COGL_PIXEL_FORMAT_RGBA_8888_PRE, 0x12345678);
test_read_8888 (tex_2d, COGL_PIXEL_FORMAT_BGRA_8888_PRE, 0x56341278);
test_read_8888 (tex_2d, COGL_PIXEL_FORMAT_ARGB_8888_PRE, 0x78123456);
test_read_8888 (tex_2d, COGL_PIXEL_FORMAT_ABGR_8888_PRE, 0x78563412);
test_read_int (tex_2d, COGL_PIXEL_FORMAT_RGBA_1010102_PRE,
10, 0x12, 10, 0x34, 10, 0x56, 2, 0x78,
-1);
test_read_int (tex_2d, COGL_PIXEL_FORMAT_BGRA_1010102_PRE,
10, 0x56, 10, 0x34, 10, 0x12, 2, 0x78,
-1);
test_read_int (tex_2d, COGL_PIXEL_FORMAT_ARGB_2101010_PRE,
2, 0x78, 10, 0x12, 10, 0x34, 10, 0x56,
-1);
test_read_int (tex_2d, COGL_PIXEL_FORMAT_ABGR_2101010_PRE,
2, 0x78, 10, 0x56, 10, 0x34, 10, 0x12,
-1);
cogl_object_unref (tex_2d);
if (cogl_test_verbose ())
g_print ("OK\n");
}
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