mutter/cogl/tests/conform/test-primitive-and-journal.c
2016-04-22 16:44:31 +02:00

123 lines
3.8 KiB
C

#include <cogl/cogl.h>
#include "test-utils.h"
typedef CoglVertexP2C4 Vertex;
static void
setup_orthographic_modelview (void)
{
CoglMatrix matrix;
int fb_width = cogl_framebuffer_get_width (test_fb);
int fb_height = cogl_framebuffer_get_height (test_fb);
/* Set up a non-identity modelview matrix. When the journal is
* flushed it will usually flush the identity matrix. Using the
* non-default matrix ensures that we test that Cogl restores the
* matrix we asked for. The matrix sets up an orthographic transform
* in the modelview matrix */
cogl_matrix_init_identity (&matrix);
cogl_matrix_orthographic (&matrix,
0.0f, 0.0f, /* x_1 y_1 */
fb_width,
fb_height,
-1.0f, /* nearval */
1.0f /* farval */);
cogl_framebuffer_set_modelview_matrix (test_fb, &matrix);
}
static void
create_primitives (CoglPrimitive *primitives[2])
{
static const Vertex vertex_data[8] =
{
/* triangle strip 1 */
{ 0, 0, 255, 0, 0, 255 },
{ 0, 100, 255, 0, 0, 255 },
{ 100, 0, 255, 0, 0, 255 },
{ 100, 100, 255, 0, 0, 255 },
/* triangle strip 2 */
{ 200, 0, 0, 0, 255, 255 },
{ 200, 100, 0, 0, 255, 255 },
{ 300, 0, 0, 0, 255, 255 },
{ 300, 100, 0, 0, 255, 255 },
};
primitives[0] = cogl_primitive_new_p2c4 (test_ctx,
COGL_VERTICES_MODE_TRIANGLE_STRIP,
G_N_ELEMENTS (vertex_data),
vertex_data);
cogl_primitive_set_n_vertices (primitives[0], 4);
primitives[1] = cogl_primitive_copy (primitives[0]);
cogl_primitive_set_first_vertex (primitives[1], 4);
cogl_primitive_set_n_vertices (primitives[1], 4);
}
static CoglPipeline *
create_pipeline (void)
{
CoglPipeline *pipeline = cogl_pipeline_new (test_ctx);
cogl_pipeline_set_color4ub (pipeline, 0, 255, 0, 255);
return pipeline;
}
void
test_primitive_and_journal (void)
{
CoglPrimitive *primitives[2];
CoglPipeline *pipeline;
setup_orthographic_modelview ();
create_primitives (primitives);
pipeline = create_pipeline ();
/* Set a clip to clip all three rectangles to just the bottom half.
* The journal flushes its own clip state so this verifies that the
* clip state is correctly restored for the second primitive. */
cogl_framebuffer_push_rectangle_clip (test_fb,
0, 50, 300, 100);
cogl_primitive_draw (primitives[0], test_fb, pipeline);
/* Draw a rectangle using the journal in-between the two primitives.
* This should test that the journal gets flushed correctly and that
* the modelview matrix is restored. Half of the rectangle should be
* overriden by the second primitive */
cogl_framebuffer_draw_rectangle (test_fb,
pipeline,
100, 0, /* x1/y1 */
300, 100 /* x2/y2 */);
cogl_primitive_draw (primitives[1], test_fb, pipeline);
/* Check the three rectangles */
test_utils_check_region (test_fb,
1, 51,
98, 48,
0xff0000ff);
test_utils_check_region (test_fb,
101, 51,
98, 48,
0x00ff00ff);
test_utils_check_region (test_fb,
201, 51,
98, 48,
0x0000ffff);
/* Check that the top half of all of the rectangles was clipped */
test_utils_check_region (test_fb,
1, 1,
298, 48,
0x000000ff);
cogl_framebuffer_pop_clip (test_fb);
if (cogl_test_verbose ())
g_print ("OK\n");
}