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145 lines
4.2 KiB
C
145 lines
4.2 KiB
C
#include <cogl/cogl.h>
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#include <string.h>
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#include "test-utils.h"
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static void
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check_texture (int width, int height, TestUtilsTextureFlags flags)
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{
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CoglTexture *tex;
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uint8_t *data, *p;
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int y, x;
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int rowstride;
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CoglBitmap *bmp;
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p = data = g_malloc (width * height * 4);
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for (y = 0; y < height; y++)
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for (x = 0; x < width; x++)
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{
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*(p++) = x;
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*(p++) = y;
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*(p++) = 128;
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*(p++) = (x ^ y);
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}
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bmp = cogl_bitmap_new_for_data (test_ctx,
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width, height,
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COGL_PIXEL_FORMAT_RGBA_8888,
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width * 4,
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data);
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tex = test_utils_texture_new_from_bitmap (bmp, flags,
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FALSE);
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/* Replace the bottom right quarter of the data with negated data to
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test set_region */
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rowstride = width * 4;
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p = data + (height / 2) * rowstride + rowstride / 2;
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for (y = 0; y < height / 2; y++)
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{
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for (x = 0; x < width / 2; x++)
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{
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p[0] = ~p[0];
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p[1] = ~p[1];
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p[2] = ~p[2];
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p[3] = ~p[3];
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p += 4;
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}
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p += width * 2;
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}
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cogl_texture_set_region (tex,
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width / 2,
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height / 2,
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width / 2, /* dest x */
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height / 2, /* dest y */
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width / 2, /* region width */
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height / 2, /* region height */
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width, /* src width */
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height, /* src height */
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COGL_PIXEL_FORMAT_RGBA_8888,
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rowstride,
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data);
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/* Check passing a NULL pointer and a zero rowstride. The texture
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should calculate the needed data size and return it */
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g_assert_cmpint (cogl_texture_get_data (tex, COGL_PIXEL_FORMAT_ANY, 0, NULL),
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==,
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width * height * 4);
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/* Try first receiving the data as RGB. This should cause a
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* conversion */
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memset (data, 0, width * height * 4);
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cogl_texture_get_data (tex, COGL_PIXEL_FORMAT_RGB_888,
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width * 3, data);
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p = data;
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for (y = 0; y < height; y++)
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for (x = 0; x < width; x++)
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{
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if (x >= width / 2 && y >= height / 2)
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{
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g_assert_cmpint (p[0], ==, ~x & 0xff);
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g_assert_cmpint (p[1], ==, ~y & 0xff);
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g_assert_cmpint (p[2], ==, ~128 & 0xff);
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}
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else
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{
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g_assert_cmpint (p[0], ==, x & 0xff);
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g_assert_cmpint (p[1], ==, y & 0xff);
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g_assert_cmpint (p[2], ==, 128);
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}
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p += 3;
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}
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/* Now try receiving the data as RGBA. This should not cause a
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* conversion and no unpremultiplication because we explicitly set
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* the internal format when we created the texture */
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memset (data, 0, width * height * 4);
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cogl_texture_get_data (tex, COGL_PIXEL_FORMAT_RGBA_8888,
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width * 4, data);
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p = data;
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for (y = 0; y < height; y++)
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for (x = 0; x < width; x++)
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{
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if (x >= width / 2 && y >= height / 2)
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{
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g_assert_cmpint (p[0], ==, ~x & 0xff);
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g_assert_cmpint (p[1], ==, ~y & 0xff);
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g_assert_cmpint (p[2], ==, ~128 & 0xff);
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g_assert_cmpint (p[3], ==, ~(x ^ y) & 0xff);
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}
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else
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{
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g_assert_cmpint (p[0], ==, x & 0xff);
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g_assert_cmpint (p[1], ==, y & 0xff);
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g_assert_cmpint (p[2], ==, 128);
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g_assert_cmpint (p[3], ==, (x ^ y) & 0xff);
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}
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p += 4;
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}
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cogl_object_unref (tex);
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g_free (data);
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}
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void
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test_texture_get_set_data (void)
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{
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/* First try without atlasing */
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check_texture (256, 256, TEST_UTILS_TEXTURE_NO_ATLAS);
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/* Try again with atlasing. This should end up testing the atlas
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backend and the sub texture backend */
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check_texture (256, 256, 0);
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/* Try with a really big texture in the hope that it will end up
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sliced. */
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check_texture (4, 5128, TEST_UTILS_TEXTURE_NO_ATLAS);
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/* And in the other direction. */
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check_texture (5128, 4, TEST_UTILS_TEXTURE_NO_ATLAS);
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}
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