mutter/cogl/tests/conform/test-point-size.c

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#include <cogl/cogl.h>
#include "test-declarations.h"
#include "test-utils.h"
/* This test assumes the GL driver supports point sizes up to 16
pixels. Cogl should probably have some way of querying the size so
we start from that instead */
#define MAX_POINT_SIZE 16
/* The size of the area that we'll paint each point in */
#define POINT_BOX_SIZE (MAX_POINT_SIZE * 2)
static int
calc_coord_offset (int pos, int pos_index, int point_size)
{
switch (pos_index)
{
case 0: return pos - point_size / 2 - 2;
case 1: return pos - point_size / 2 + 2;
case 2: return pos + point_size / 2 - 2;
case 3: return pos + point_size / 2 + 2;
}
g_assert_not_reached ();
return 0;
}
static void
verify_point_size (CoglFramebuffer *test_fb,
int x_pos,
int y_pos,
int point_size)
{
int y, x;
for (y = 0; y < 4; y++)
for (x = 0; x < 4; x++)
{
gboolean in_point = x >= 1 && x <= 2 && y >= 1 && y <= 2;
uint32_t expected_pixel = in_point ? 0x00ff00ff : 0xff0000ff;
test_utils_check_pixel (test_fb,
calc_coord_offset (x_pos, x, point_size),
calc_coord_offset (y_pos, y, point_size),
expected_pixel);
}
}
void
test_point_size (void)
{
int fb_width = cogl_framebuffer_get_width (test_fb);
int fb_height = cogl_framebuffer_get_height (test_fb);
int point_size;
int x_pos;
cogl_framebuffer_orthographic (test_fb,
0, 0, /* x_1, y_1 */
fb_width, /* x_2 */
fb_height /* y_2 */,
-1, 100 /* near/far */);
cogl_framebuffer_clear4f (test_fb,
COGL_BUFFER_BIT_COLOR,
1.0f, 0.0f, 0.0f, 1.0f);
/* Try a rendering a single point with a few different point
sizes */
for (x_pos = 0, point_size = MAX_POINT_SIZE;
point_size >= 4;
x_pos += POINT_BOX_SIZE, point_size /= 2)
{
CoglPipeline *pipeline = cogl_pipeline_new (test_ctx);
CoglVertexP2 point = { x_pos + POINT_BOX_SIZE / 2,
POINT_BOX_SIZE / 2 };
CoglPrimitive *prim =
cogl_primitive_new_p2 (test_ctx,
COGL_VERTICES_MODE_POINTS,
1, /* n_vertices */
&point);
cogl_pipeline_set_point_size (pipeline, point_size);
cogl_pipeline_set_color4ub (pipeline, 0, 255, 0, 255);
Add _primitive_draw to replace _framebuffer_draw_primitive When splitting out the CoglPath api we saw that we would be left with inconsistent drawing apis if the drawing apis in core Cogl were lumped into the cogl_framebuffer_ api considering other Cogl sub-libraries or that others will want to create higher level drawing apis outside of Cogl but can't use the same namespace. So that we can aim for a more consistent style this adds a cogl_primitive_draw() api, comparable to cogl_path_fill() or cogl_pango_show_layout() that's intended to replace cogl_framebuffer_draw_primitive() Note: the attribute and rectangle drawing apis are still in the cogl_framebuffer_ namespace and this might potentially change but in these cases there is no single object representing the thing being drawn so it seems a more reasonable they they live in the framebuffer namespace for now. Note: the cogl_framebuffer_draw_primitive() api isn't removed by this patch so it can more conveniently be cherry picked to the 1.16 branch so we can mark it deprecated for a short while. Even though it's marked as experimental api we know that there are people using the api so we'd like to give them a chance to switch to the new api. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 418912b93ff81a47f9b38114d05335ab76277c48) Conflicts: cogl-pango/cogl-pango-display-list.c cogl/Makefile.am cogl/cogl-framebuffer.c cogl/cogl-pipeline-layer-state.h cogl/cogl2-path.c cogl/driver/gl/cogl-clip-stack-gl.c
2013-07-09 18:47:29 -04:00
cogl_primitive_draw (prim, test_fb, pipeline);
cogl_object_unref (prim);
cogl_object_unref (pipeline);
}
/* Verify all of the points where drawn at the right size */
for (x_pos = 0, point_size = MAX_POINT_SIZE;
point_size >= 4;
x_pos += POINT_BOX_SIZE, point_size /= 2)
verify_point_size (test_fb,
x_pos + POINT_BOX_SIZE / 2,
POINT_BOX_SIZE / 2,
point_size);
if (cogl_test_verbose ())
g_print ("OK\n");
}