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#include <cogl/cogl.h>
#include <string.h>
#include "test-utils.h"
/* Non-power-of-two sized texture that should cause slicing */
#define TEXTURE_SIZE 384
/* Number of times to split the texture up on each axis */
#define PARTS 2
/* The texture is split into four parts, each with a different colour */
#define PART_SIZE (TEXTURE_SIZE / PARTS)
/* Amount of pixels to skip off the top, bottom, left and right of the
texture when reading back the stage */
#define TEST_INSET 4
/* Size to actually render the texture at */
#define TEXTURE_RENDER_SIZE TEXTURE_SIZE
/* The size of a part once rendered */
#define PART_RENDER_SIZE (TEXTURE_RENDER_SIZE / PARTS)
static const uint32_t corner_colors[PARTS * PARTS] =
{
/* Top left - red */ 0xff0000ff,
/* Top right - green */ 0x00ff00ff,
/* Bottom left - blue */ 0x0000ffff,
/* Bottom right - yellow */ 0xffff00ff
};
static void
validate_part (int xnum,
int ynum,
uint32_t color)
{
test_utils_check_region (test_fb,
xnum * PART_RENDER_SIZE + TEST_INSET,
ynum * PART_RENDER_SIZE + TEST_INSET,
PART_RENDER_SIZE - TEST_INSET * 2,
PART_RENDER_SIZE - TEST_INSET * 2,
color);
}
static void
validate_result (void)
{
/* Validate that all four corners of the texture are drawn in the
right color */
validate_part (0, 0, corner_colors[0]);
validate_part (1, 0, corner_colors[1]);
validate_part (0, 1, corner_colors[2]);
validate_part (1, 1, corner_colors[3]);
}
static CoglTexture *
make_texture (void)
{
void *tex_data;
uint32_t *p;
CoglTexture *tex;
int partx, party, width, height;
p = tex_data = g_malloc (TEXTURE_SIZE * TEXTURE_SIZE * 4);
/* Make a texture with a different color for each part */
for (party = 0; party < PARTS; party++)
{
height = (party < PARTS - 1
? PART_SIZE
: TEXTURE_SIZE - PART_SIZE * (PARTS - 1));
for (partx = 0; partx < PARTS; partx++)
{
uint32_t color = corner_colors[party * PARTS + partx];
width = (partx < PARTS - 1
? PART_SIZE
: TEXTURE_SIZE - PART_SIZE * (PARTS - 1));
while (width-- > 0)
*(p++) = GUINT32_TO_BE (color);
}
while (--height > 0)
{
memcpy (p, p - TEXTURE_SIZE, TEXTURE_SIZE * 4);
p += TEXTURE_SIZE;
}
}
tex = test_utils_texture_new_from_data (test_ctx,
TEXTURE_SIZE,
TEXTURE_SIZE,
TEST_UTILS_TEXTURE_NO_ATLAS,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
TEXTURE_SIZE * 4,
tex_data);
g_free (tex_data);
if (cogl_test_verbose ())
{
if (cogl_texture_is_sliced (tex))
g_print ("Texture is sliced\n");
else
g_print ("Texture is not sliced\n");
}
/* The texture should be sliced unless NPOTs are supported */
g_assert (cogl_has_feature (test_ctx, COGL_FEATURE_ID_TEXTURE_NPOT)
? !cogl_texture_is_sliced (tex)
: cogl_texture_is_sliced (tex));
return tex;
}
static void
paint (void)
{
CoglPipeline *pipeline = cogl_pipeline_new (test_ctx);
CoglTexture *texture = make_texture ();
int y, x;
cogl_pipeline_set_layer_texture (pipeline, 0, texture);
/* Just render the texture in the top left corner */
/* Render the texture using four separate rectangles */
for (y = 0; y < 2; y++)
for (x = 0; x < 2; x++)
cogl_framebuffer_draw_textured_rectangle (test_fb,
pipeline,
x * TEXTURE_RENDER_SIZE / 2,
y * TEXTURE_RENDER_SIZE / 2,
(x + 1) *
TEXTURE_RENDER_SIZE / 2,
(y + 1) *
TEXTURE_RENDER_SIZE / 2,
x / 2.0f,
y / 2.0f,
(x + 1) / 2.0f,
(y + 1) / 2.0f);
cogl_object_unref (pipeline);
cogl_object_unref (texture);
}
void
test_npot_texture (void)
{
if (cogl_test_verbose ())
{
if (cogl_has_feature (test_ctx, COGL_FEATURE_ID_TEXTURE_NPOT))
g_print ("NPOT textures are supported\n");
else
g_print ("NPOT textures are not supported\n");
}
cogl_framebuffer_orthographic (test_fb,
0, 0,
cogl_framebuffer_get_width (test_fb),
cogl_framebuffer_get_height (test_fb),
-1,
100);
paint ();
validate_result ();
if (cogl_test_verbose ())
g_print ("OK\n");
}
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