145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
#include <cogl/cogl.h>
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#include "test-utils.h"
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#define N_TEXTURES 128
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#define OPACITY_FOR_ROW(y) \
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(0xff - ((y) & 0xf) * 0x10)
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#define COLOR_FOR_SIZE(size) \
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(colors + (size) % 3)
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typedef struct
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{
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uint8_t red, green, blue, alpha;
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} TestColor;
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static const TestColor colors[] =
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{ { 0xff, 0x00, 0x00, 0xff },
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{ 0x00, 0xff, 0x00, 0xff },
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{ 0x00, 0x00, 0xff, 0xff } };
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static CoglTexture *
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create_texture (int size)
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{
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CoglTexture *texture;
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const TestColor *color;
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uint8_t *data, *p;
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int x, y;
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/* Create a red, green or blue texture depending on the size */
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color = COLOR_FOR_SIZE (size);
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p = data = g_malloc (size * size * 4);
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/* Fill the data with the color but fade the opacity out with
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increasing y coordinates so that we can see the blending it the
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atlas migration accidentally blends with garbage in the
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texture */
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for (y = 0; y < size; y++)
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{
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int opacity = OPACITY_FOR_ROW (y);
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for (x = 0; x < size; x++)
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{
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/* Store the colors premultiplied */
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p[0] = color->red * opacity / 255;
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p[1] = color->green * opacity / 255;
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p[2] = color->blue * opacity / 255;
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p[3] = opacity;
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p += 4;
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}
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}
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texture = test_utils_texture_new_from_data (test_ctx,
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size, /* width */
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size, /* height */
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TEST_UTILS_TEXTURE_NONE, /* flags */
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/* format */
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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/* rowstride */
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size * 4,
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data);
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g_free (data);
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return texture;
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}
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static void
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verify_texture (CoglTexture *texture, int size)
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{
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uint8_t *data, *p;
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int x, y;
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const TestColor *color;
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color = COLOR_FOR_SIZE (size);
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p = data = g_malloc (size * size * 4);
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cogl_texture_get_data (texture,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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size * 4,
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data);
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for (y = 0; y < size; y++)
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{
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int opacity = OPACITY_FOR_ROW (y);
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for (x = 0; x < size; x++)
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{
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TestColor real_color =
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{
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color->red * opacity / 255,
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color->green * opacity / 255,
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color->blue * opacity / 255
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};
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test_utils_compare_pixel (p,
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(real_color.red << 24) |
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(real_color.green << 16) |
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(real_color.blue << 8) |
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opacity);
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g_assert_cmpint (p[3], ==, opacity);
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p += 4;
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}
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}
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g_free (data);
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}
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void
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test_atlas_migration (void)
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{
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CoglTexture *textures[N_TEXTURES];
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int i, tex_num;
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/* Create and destroy all of the textures a few times to increase
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the chances that we'll end up reusing the buffers for previously
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discarded atlases */
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for (i = 0; i < 5; i++)
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{
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for (tex_num = 0; tex_num < N_TEXTURES; tex_num++)
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textures[tex_num] = create_texture (tex_num + 1);
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for (tex_num = 0; tex_num < N_TEXTURES; tex_num++)
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cogl_object_unref (textures[tex_num]);
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}
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/* Create all the textures again */
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for (tex_num = 0; tex_num < N_TEXTURES; tex_num++)
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textures[tex_num] = create_texture (tex_num + 1);
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/* Verify that they all still have the right data */
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for (tex_num = 0; tex_num < N_TEXTURES; tex_num++)
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verify_texture (textures[tex_num], tex_num + 1);
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/* Destroy them all */
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for (tex_num = 0; tex_num < N_TEXTURES; tex_num++)
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cogl_object_unref (textures[tex_num]);
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if (cogl_test_verbose ())
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g_print ("OK\n");
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}
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