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#include <cogl/cogl.h>
#include <string.h>
#include "test-utils.h"
#define DRAW_SIZE 64
static CoglPipeline *
create_base_pipeline (void)
{
CoglBitmap *bmp;
CoglTextureRectangle *tex;
CoglPipeline *pipeline;
uint8_t tex_data[] =
{
0x44, 0x44, 0x44, 0x88, 0x88, 0x88,
0xcc, 0xcc, 0xcc, 0xff, 0xff, 0xff
};
bmp = cogl_bitmap_new_for_data (test_ctx,
2, 2, /* width/height */
COGL_PIXEL_FORMAT_RGB_888,
2 * 3, /* rowstride */
tex_data);
tex = cogl_texture_rectangle_new_from_bitmap (bmp);
cogl_object_unref (bmp);
pipeline = cogl_pipeline_new (test_ctx);
cogl_pipeline_set_layer_filters (pipeline,
0, /* layer */
COGL_PIPELINE_FILTER_NEAREST,
COGL_PIPELINE_FILTER_NEAREST);
cogl_pipeline_set_layer_texture (pipeline,
0, /* layer */
tex);
cogl_object_unref (tex);
return pipeline;
}
static void
check_colors (int x_offset,
int y_offset,
const uint8_t expected_colors[9])
{
int x, y;
for (y = 0; y < 4; y++)
for (x = 0; x < 4; x++)
{
uint32_t color = expected_colors[x + y * 4];
test_utils_check_region (test_fb,
x * DRAW_SIZE / 4 + 1 + x_offset,
y * DRAW_SIZE / 4 + 1 + y_offset,
DRAW_SIZE / 4 - 2,
DRAW_SIZE / 4 - 2,
0xff |
(color << 8) |
(color << 16) |
(color << 24));
}
}
static void
test_pipeline (CoglPipeline *pipeline,
int x_offset,
int y_offset,
const uint8_t expected_colors[9])
{
float x1 = x_offset;
float y1 = y_offset;
float x2 = x1 + DRAW_SIZE;
float y2 = y1 + DRAW_SIZE;
int y, x;
cogl_framebuffer_draw_textured_rectangle (test_fb,
pipeline,
x1, y1,
x2, y2,
-0.5f, /* s1 */
-0.5f, /* t1 */
1.5f, /* s2 */
1.5f /* t2 */);
check_colors (x_offset, y_offset, expected_colors);
/* Also try drawing each quadrant of the rectangle with a small
* rectangle */
for (y = -1; y < 3; y++)
for (x = -1; x < 3; x++)
{
x1 = x_offset + (x + 1) * DRAW_SIZE / 4 + DRAW_SIZE;
y1 = y_offset + (y + 1) * DRAW_SIZE / 4;
x2 = x1 + DRAW_SIZE / 4;
y2 = y1 + DRAW_SIZE / 4;
cogl_framebuffer_draw_textured_rectangle (test_fb,
pipeline,
x1, y1,
x2, y2,
x / 2.0f, /* s1 */
y / 2.0f, /* t1 */
(x + 1) / 2.0f, /* s2 */
(y + 1) / 2.0f /* t2 */);
}
check_colors (x_offset + DRAW_SIZE, y_offset, expected_colors);
}
void
test_wrap_rectangle_textures (void)
{
float fb_width = cogl_framebuffer_get_width (test_fb);
float fb_height = cogl_framebuffer_get_height (test_fb);
CoglPipeline *base_pipeline;
CoglPipeline *clamp_pipeline;
CoglPipeline *repeat_pipeline;
/* The textures are drawn with the texture coordinates from
* -0.5→1.5. That means we get one complete copy of the texture and
* an extra half of the texture surrounding it. The drawing is
* tested against a 4x4 grid of colors. The center 2x2 colours
* specify the normal texture colors and the other colours specify
* what the wrap mode should generate */
static const uint8_t clamp_colors[] =
{
0x44, 0x44, 0x88, 0x88,
0x44, 0x44, 0x88, 0x88,
0xcc, 0xcc, 0xff, 0xff,
0xcc, 0xcc, 0xff, 0xff
};
static const uint8_t repeat_colors[] =
{
0xff, 0xcc, 0xff, 0xcc,
0x88, 0x44, 0x88, 0x44,
0xff, 0xcc, 0xff, 0xcc,
0x88, 0x44, 0x88, 0x44
};
cogl_framebuffer_orthographic (test_fb,
0, 0, /* x_1, y_1 */
fb_width, /* x_2 */
fb_height /* y_2 */,
-1, 100 /* near/far */);
base_pipeline = create_base_pipeline ();
clamp_pipeline = cogl_pipeline_copy (base_pipeline);
cogl_pipeline_set_layer_wrap_mode (clamp_pipeline,
0, /* layer */
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
repeat_pipeline = cogl_pipeline_copy (base_pipeline);
cogl_pipeline_set_layer_wrap_mode (repeat_pipeline,
0, /* layer */
COGL_PIPELINE_WRAP_MODE_REPEAT);
test_pipeline (clamp_pipeline,
0, 0, /* x/y offset */
clamp_colors);
test_pipeline (repeat_pipeline,
0, DRAW_SIZE * 2, /* x/y offset */
repeat_colors);
cogl_object_unref (repeat_pipeline);
cogl_object_unref (clamp_pipeline);
cogl_object_unref (base_pipeline);
}
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