mutter/cogl/tests/conform/test-wrap-modes.c

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#define COGL_VERSION_MIN_REQUIRED COGL_VERSION_1_0
#include <cogl/cogl.h>
#include <string.h>
#include "test-declarations.h"
#include "test-utils.h"
#define TEX_SIZE 4
typedef struct _TestState
{
int width;
int height;
CoglTexture *texture;
} TestState;
static CoglTexture *
create_texture (TestUtilsTextureFlags flags)
{
uint8_t *data = g_malloc (TEX_SIZE * TEX_SIZE * 4), *p = data;
CoglTexture *tex;
int x, y;
for (y = 0; y < TEX_SIZE; y++)
for (x = 0; x < TEX_SIZE; x++)
{
*(p++) = 0;
*(p++) = (x & 1) * 255;
*(p++) = (y & 1) * 255;
*(p++) = 255;
}
tex = test_utils_texture_new_from_data (test_ctx,
TEX_SIZE, TEX_SIZE, flags,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
TEX_SIZE * 4,
data);
g_free (data);
return tex;
}
static CoglPipeline *
create_pipeline (TestState *state,
CoglPipelineWrapMode wrap_mode_s,
CoglPipelineWrapMode wrap_mode_t)
{
CoglPipeline *pipeline;
pipeline = cogl_pipeline_new (test_ctx);
cogl_pipeline_set_layer_texture (pipeline, 0, state->texture);
cogl_pipeline_set_layer_filters (pipeline, 0,
COGL_PIPELINE_FILTER_NEAREST,
COGL_PIPELINE_FILTER_NEAREST);
cogl_pipeline_set_layer_wrap_mode_s (pipeline, 0, wrap_mode_s);
cogl_pipeline_set_layer_wrap_mode_t (pipeline, 0, wrap_mode_t);
return pipeline;
}
static CoglPipelineWrapMode
wrap_modes[] =
{
COGL_PIPELINE_WRAP_MODE_REPEAT,
COGL_PIPELINE_WRAP_MODE_REPEAT,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE,
COGL_PIPELINE_WRAP_MODE_REPEAT,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE,
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE,
COGL_PIPELINE_WRAP_MODE_REPEAT,
};
static void
draw_tests (TestState *state)
{
int i;
for (i = 0; i < G_N_ELEMENTS (wrap_modes); i += 2)
{
CoglPipelineWrapMode wrap_mode_s, wrap_mode_t;
CoglPipeline *pipeline;
/* Create a separate pipeline for each pair of wrap modes so
that we can verify whether the batch splitting works */
wrap_mode_s = wrap_modes[i];
wrap_mode_t = wrap_modes[i + 1];
pipeline = create_pipeline (state, wrap_mode_s, wrap_mode_t);
/* Render the pipeline at four times the size of the texture */
cogl_framebuffer_draw_textured_rectangle (test_fb,
pipeline,
i * TEX_SIZE,
0,
(i + 2) * TEX_SIZE,
TEX_SIZE * 2,
0, 0, 2, 2);
cogl_object_unref (pipeline);
}
}
static const CoglVertexP3T2 vertices[4] =
{
{ .x = 0.0f, .y = 0.0f, .z = 0.0f, .s = 0.0f, .t = 0.0f },
{ .x = 0.0f, .y = TEX_SIZE * 2, .z = 0.0f, .s = 0.0f, .t = 2.0f },
{ .x = TEX_SIZE * 2, .y = TEX_SIZE * 2, .z = 0.0f, .s = 2.0f, .t = 2.0f },
{ .x = TEX_SIZE * 2, .y = 0.0f, .z = 0.0f, .s = 2.0f, .t = 0.0f }
};
static void
draw_tests_polygon (TestState *state)
{
int i;
for (i = 0; i < G_N_ELEMENTS (wrap_modes); i += 2)
{
CoglPipelineWrapMode wrap_mode_s, wrap_mode_t;
CoglPrimitive *primitive;
CoglPipeline *pipeline;
wrap_mode_s = wrap_modes[i];
wrap_mode_t = wrap_modes[i + 1];
pipeline = create_pipeline (state, wrap_mode_s, wrap_mode_t);
cogl_framebuffer_push_matrix (test_fb);
cogl_framebuffer_translate (test_fb, TEX_SIZE * i, 0.0f, 0.0f);
/* Render the pipeline at four times the size of the texture */
primitive = cogl_primitive_new_p3t2 (test_ctx,
COGL_VERTICES_MODE_TRIANGLE_FAN,
G_N_ELEMENTS (vertices),
vertices);
cogl_primitive_draw (primitive, test_fb, pipeline);
cogl_object_unref (primitive);
cogl_object_unref (pipeline);
cogl_framebuffer_pop_matrix (test_fb);
}
}
static void
validate_set (TestState *state, int offset)
{
uint8_t data[TEX_SIZE * 2 * TEX_SIZE * 2 * 4], *p;
int x, y, i;
for (i = 0; i < G_N_ELEMENTS (wrap_modes); i += 2)
{
CoglPipelineWrapMode wrap_mode_s, wrap_mode_t;
wrap_mode_s = wrap_modes[i];
wrap_mode_t = wrap_modes[i + 1];
cogl_framebuffer_read_pixels (test_fb, i * TEX_SIZE, offset * TEX_SIZE * 2,
TEX_SIZE * 2, TEX_SIZE * 2,
COGL_PIXEL_FORMAT_RGBA_8888,
data);
p = data;
for (y = 0; y < TEX_SIZE * 2; y++)
for (x = 0; x < TEX_SIZE * 2; x++)
{
uint8_t green, blue;
if (x < TEX_SIZE ||
wrap_mode_s == COGL_PIPELINE_WRAP_MODE_REPEAT ||
wrap_mode_s == COGL_PIPELINE_WRAP_MODE_AUTOMATIC)
green = (x & 1) * 255;
else
green = ((TEX_SIZE - 1) & 1) * 255;
if (y < TEX_SIZE ||
wrap_mode_t == COGL_PIPELINE_WRAP_MODE_REPEAT ||
wrap_mode_t == COGL_PIPELINE_WRAP_MODE_AUTOMATIC)
blue = (y & 1) * 255;
else
blue = ((TEX_SIZE - 1) & 1) * 255;
g_assert_cmpint (p[0], ==, 0);
g_assert_cmpint (p[1], ==, green);
g_assert_cmpint (p[2], ==, blue);
p += 4;
}
}
}
static void
validate_result (TestState *state)
{
validate_set (state, 0); /* non-atlased rectangle */
#if 0 /* this doesn't currently work */
validate_set (state, 1); /* atlased rectangle */
#endif
validate_set (state, 2); /* CoglPrimitive */
}
static void
paint (TestState *state)
{
/* Draw the tests first with a non atlased texture */
state->texture = create_texture (TEST_UTILS_TEXTURE_NO_ATLAS);
draw_tests (state);
cogl_object_unref (state->texture);
/* Draw the tests again with a possible atlased texture. This should
end up testing software repeats */
state->texture = create_texture (TEST_UTILS_TEXTURE_NONE);
cogl_framebuffer_push_matrix (test_fb);
cogl_framebuffer_translate (test_fb, 0.0f, TEX_SIZE * 2.0f, 0.0f);
draw_tests (state);
cogl_framebuffer_pop_matrix (test_fb);
cogl_object_unref (state->texture);
/* Draw the tests using CoglPrimitive */
state->texture = create_texture (TEST_UTILS_TEXTURE_NO_ATLAS);
cogl_framebuffer_push_matrix (test_fb);
cogl_framebuffer_translate (test_fb,
0.0f, TEX_SIZE * 4.0f, 0.0f);
draw_tests_polygon (state);
cogl_framebuffer_pop_matrix (test_fb);
cogl_object_unref (state->texture);
validate_result (state);
}
void
test_wrap_modes (void)
{
TestState state;
state.width = cogl_framebuffer_get_width (test_fb);
state.height = cogl_framebuffer_get_height (test_fb);
cogl_framebuffer_orthographic (test_fb,
0, 0,
state.width,
state.height,
-1,
100);
paint (&state);
if (cogl_test_verbose ())
g_print ("OK\n");
}