static CoglTexture *
make_texture (uint32_t color)
{
guchar *tex_data, *p;
uint8_t r = MASK_RED (color);
uint8_t g = MASK_GREEN (color);
uint8_t b = MASK_BLUE (color);
uint8_t a = MASK_ALPHA (color);
CoglTexture *tex;
tex_data = g_malloc (QUAD_WIDTH * QUAD_WIDTH * 4);
for (p = tex_data + QUAD_WIDTH * QUAD_WIDTH * 4; p > tex_data;)
{
*(--p) = a;
*(--p) = b;
*(--p) = g;
*(--p) = r;
}
/* Note: we don't use COGL_PIXEL_FORMAT_ANY for the internal format here
* since we don't want to allow Cogl to premultiply our data. */
tex = test_utils_texture_new_from_data (test_ctx,
QUAD_WIDTH,
QUAD_WIDTH,
TEST_UTILS_TEXTURE_NONE,
COGL_PIXEL_FORMAT_RGBA_8888,
COGL_PIXEL_FORMAT_RGBA_8888,
QUAD_WIDTH * 4,
tex_data);
g_free (tex_data);
return tex;
}
static CoglTexture *
create_dummy_texture (void)
{
/* Create a dummy 1x1 green texture to replace the color from the
vertex shader */
static const uint8_t data[4] = { 0x00, 0xff, 0x00, 0xff };
return test_utils_texture_new_from_data (test_ctx,
1, 1, /* size */
TEST_UTILS_TEXTURE_NONE,
COGL_PIXEL_FORMAT_RGB_888,
4, /* rowstride */
data);
}
