mutter/src/tests/cogl/conform/test-map-buffer-range.c
Bilal Elmoussaoui 2c4968fb41 cogl: Port Primitive away from CoglObject
- The associated CoglAttribute's are now stored in GPtrArray as suggested
by carlosg in
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3193?commit_id=19b619073b3c7d311c64e0a997558f943b38c94a#note_1849281
- cogl_primitive_set_attributes was dropped for "simplicity"
especially that nothing uses it.
- As this is the last remaining CoglObject subclass, the commit also drops
all the CoglObject related macros/types

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3193>
2023-10-29 21:16:24 +00:00

134 lines
4.3 KiB
C

#include <cogl/cogl.h>
#include <string.h>
#include "tests/cogl-test-utils.h"
static uint8_t
tex_data[2 * 2 * 4] =
{
0xff, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff,
0x00, 0x00, 0xff, 0xff, 0xff, 0x00, 0xff, 0xff
};
/* Vertex data for a quad with all of the texture coordinates set to
* the top left (red) pixel */
static CoglVertexP2T2
vertex_data[4] =
{
{ -1, -1, 0, 0 },
{ 1, -1, 0, 0 },
{ -1, 1, 0, 0 },
{ 1, 1, 0, 0 }
};
static void
test_map_buffer_range (void)
{
CoglTexture *tex;
CoglPipeline *pipeline;
int fb_width, fb_height;
CoglAttributeBuffer *buffer;
CoglVertexP2T2 *data;
CoglAttribute *pos_attribute;
CoglAttribute *tex_coord_attribute;
CoglPrimitive *primitive;
if (!cogl_has_feature (test_ctx, COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE))
{
g_test_skip ("Missing map buffer for write capability");
return;
}
tex = cogl_texture_2d_new_from_data (test_ctx,
2, 2, /* width/height */
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
2 * 4, /* rowstride */
tex_data,
NULL /* error */);
pipeline = cogl_pipeline_new (test_ctx);
cogl_pipeline_set_layer_texture (pipeline, 0, tex);
cogl_pipeline_set_layer_filters (pipeline,
0, /* layer */
COGL_PIPELINE_FILTER_NEAREST,
COGL_PIPELINE_FILTER_NEAREST);
cogl_pipeline_set_layer_wrap_mode (pipeline,
0, /* layer */
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
fb_width = cogl_framebuffer_get_width (test_fb);
fb_height = cogl_framebuffer_get_height (test_fb);
buffer = cogl_attribute_buffer_new (test_ctx,
sizeof (vertex_data),
vertex_data);
/* Replace the texture coordinates of the third vertex with the
* coordinates for a green texel */
data = cogl_buffer_map_range (COGL_BUFFER (buffer),
sizeof (vertex_data[0]) * 2,
sizeof (vertex_data[0]),
COGL_BUFFER_ACCESS_WRITE,
COGL_BUFFER_MAP_HINT_DISCARD_RANGE,
NULL); /* don't catch errors */
g_assert (data != NULL);
data->x = vertex_data[2].x;
data->y = vertex_data[2].y;
data->s = 1.0f;
data->t = 0.0f;
cogl_buffer_unmap (COGL_BUFFER (buffer));
pos_attribute =
cogl_attribute_new (buffer,
"cogl_position_in",
sizeof (vertex_data[0]),
offsetof (CoglVertexP2T2, x),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT);
tex_coord_attribute =
cogl_attribute_new (buffer,
"cogl_tex_coord_in",
sizeof (vertex_data[0]),
offsetof (CoglVertexP2T2, s),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT);
cogl_framebuffer_clear4f (test_fb,
COGL_BUFFER_BIT_COLOR,
0, 0, 0, 1);
primitive =
cogl_primitive_new (COGL_VERTICES_MODE_TRIANGLE_STRIP,
4, /* n_vertices */
pos_attribute,
tex_coord_attribute,
NULL);
cogl_primitive_draw (primitive, test_fb, pipeline);
g_object_unref (primitive);
/* Top left pixel should be the one that is replaced to be green */
test_utils_check_pixel (test_fb, 1, 1, 0x00ff00ff);
/* The other three corners should be left as red */
test_utils_check_pixel (test_fb, fb_width - 2, 1, 0xff0000ff);
test_utils_check_pixel (test_fb, 1, fb_height - 2, 0xff0000ff);
test_utils_check_pixel (test_fb, fb_width - 2, fb_height - 2, 0xff0000ff);
g_object_unref (buffer);
g_object_unref (pos_attribute);
g_object_unref (tex_coord_attribute);
g_object_unref (pipeline);
g_object_unref (tex);
if (cogl_test_verbose ())
g_print ("OK\n");
}
COGL_TEST_SUITE (
g_test_add_func ("/map-buffer-range", test_map_buffer_range);
)