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8e172aeecb
It makes sure we do not forget to zero the id and lets us avoid zero checks before. We use it for all new code, lets clean up the existing code base. https://gitlab.gnome.org/GNOME/mutter/merge_requests/947
137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
#include <clutter/clutter.h>
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#include <cogl/cogl.h>
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#include <string.h>
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#include "test-conform-common.h"
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static const ClutterColor stage_color = { 0x00, 0x00, 0x00, 0xff };
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#define TEX_SIZE 64
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typedef struct _TestState
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{
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unsigned int padding;
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} TestState;
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/* Creates a texture where the pixels are evenly divided between
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selecting just one of the R,G and B components */
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static CoglHandle
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make_texture (void)
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{
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guchar *tex_data = g_malloc (TEX_SIZE * TEX_SIZE * 3), *p = tex_data;
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CoglHandle tex;
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int x, y;
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for (y = 0; y < TEX_SIZE; y++)
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for (x = 0; x < TEX_SIZE; x++)
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{
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memset (p, 0, 3);
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/* Set one of the components to full. The components should be
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evenly represented so that each gets a third of the
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texture */
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p[(p - tex_data) / (TEX_SIZE * TEX_SIZE * 3 / 3)] = 255;
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p += 3;
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}
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tex = test_utils_texture_new_from_data (TEX_SIZE, TEX_SIZE, TEST_UTILS_TEXTURE_NONE,
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COGL_PIXEL_FORMAT_RGB_888,
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COGL_PIXEL_FORMAT_ANY,
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TEX_SIZE * 3,
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tex_data);
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g_free (tex_data);
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return tex;
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}
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static void
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on_paint (ClutterActor *actor, TestState *state)
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{
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CoglHandle tex;
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CoglHandle material;
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uint8_t pixels[8];
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tex = make_texture ();
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material = cogl_material_new ();
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cogl_material_set_layer (material, 0, tex);
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cogl_object_unref (tex);
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/* Render a 1x1 pixel quad without mipmaps */
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cogl_set_source (material);
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cogl_material_set_layer_filters (material, 0,
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COGL_MATERIAL_FILTER_NEAREST,
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COGL_MATERIAL_FILTER_NEAREST);
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cogl_rectangle (0, 0, 1, 1);
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/* Then with mipmaps */
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cogl_material_set_layer_filters (material, 0,
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COGL_MATERIAL_FILTER_NEAREST_MIPMAP_NEAREST,
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COGL_MATERIAL_FILTER_NEAREST);
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cogl_rectangle (1, 0, 2, 1);
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cogl_object_unref (material);
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/* Read back the two pixels we rendered */
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cogl_read_pixels (0, 0, 2, 1,
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COGL_READ_PIXELS_COLOR_BUFFER,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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pixels);
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/* The first pixel should be just one of the colors from the
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texture. It doesn't matter which one */
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g_assert ((pixels[0] == 255 && pixels[1] == 0 && pixels[2] == 0) ||
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(pixels[0] == 0 && pixels[1] == 255 && pixels[2] == 0) ||
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(pixels[0] == 0 && pixels[1] == 0 && pixels[2] == 255));
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/* The second pixel should be more or less the average of all of the
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pixels in the texture. Each component gets a third of the image
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so each component should be approximately 255/3 */
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g_assert (ABS (pixels[4] - 255 / 3) <= 3 &&
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ABS (pixels[5] - 255 / 3) <= 3 &&
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ABS (pixels[6] - 255 / 3) <= 3);
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/* Comment this out if you want visual feedback for what this test paints */
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#if 1
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clutter_main_quit ();
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#endif
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}
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static gboolean
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queue_redraw (void *stage)
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{
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clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
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return TRUE;
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}
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void
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test_texture_mipmaps (TestUtilsGTestFixture *fixture,
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void *data)
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{
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TestState state;
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ClutterActor *stage;
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ClutterActor *group;
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unsigned int idle_source;
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stage = clutter_stage_get_default ();
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clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
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group = clutter_group_new ();
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), group);
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/* We force continuous redrawing of the stage, since we need to skip
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* the first few frames, and we wont be doing anything else that
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* will trigger redrawing. */
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idle_source = g_idle_add (queue_redraw, stage);
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g_signal_connect (group, "paint", G_CALLBACK (on_paint), &state);
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clutter_actor_show_all (stage);
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clutter_main ();
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g_clear_handle_id (&idle_source, g_source_remove);
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if (cogl_test_verbose ())
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g_print ("OK\n");
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}
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