mutter/tests/conform/test-offscreen.c
Robert Bragg bbcbece6c9 tests: Improve thoroughness and reporting of make test
This patch reworks our conformance testing framework because it seems
that glib's gtesting framework isn't really well suited to our use case.
For example we weren't able to test windows builds given the way we
were using it and also for each test we'd like to repeat the test
with several different environments so we can test important driver and
feature combinations.

This patch instead switches away to a simplified but custom approach for
running our unit tests. We hope that having a more bespoke setup will
enable us to easily extend it to focus on the details important to us.

Notable changes with this new approach are:

We can now run 'make test' for our mingw windows builds.

We've got rid of all the test-*report* make rules and we're just left
with 'make test'

'make test' now runs each test several times with different driver and
feature combinations checking the result for each run. 'make test' will
then output a concise table of all of the results.

The combinations tested are:
- OpenGL Fixed Function
- OpenGL ARBfp
- OpenGL GLSL
- OpenGL No NPOT texture support
- OpenGLES 2.0
- OpenGLES 2.0 No NPOT texture support

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-02-24 14:42:31 +00:00

200 lines
5.6 KiB
C

#include <cogl/cogl.h>
#include "test-utils.h"
#define RED 0
#define GREEN 1
#define BLUE 2
typedef struct _TestState
{
CoglContext *context;
int fb_width;
int fb_height;
} TestState;
static void
check_quadrant (TestState *state,
int qx,
int qy,
guint32 expected_rgba)
{
/* The quadrants are all stuffed into the top right corner of the
framebuffer */
int x = state->fb_width * qx / 4 + state->fb_width / 2;
int y = state->fb_height * qy / 4;
int width = state->fb_width / 4;
int height = state->fb_height / 4;
/* Subtract a two-pixel gap around the edges to allow some rounding
differences */
x += 2;
y += 2;
width -= 4;
height -= 4;
test_utils_check_region (x, y, width, height, expected_rgba);
}
static void
test_paint (TestState *state)
{
CoglTexture2D *tex_2d;
CoglTexture *tex;
CoglHandle offscreen;
tex_2d = cogl_texture_2d_new_with_size (state->context,
state->fb_width,
state->fb_height,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
NULL);
tex = COGL_TEXTURE (tex_2d);
offscreen = cogl_offscreen_new_to_texture (tex);
/* Set a scale and translate transform on the window framebuffer
* before switching to the offscreen framebuffer so we can verify it
* gets restored when we switch back
*
* The test is going to draw a grid of 4 colors to a texture which
* we subsequently draw to the window with a fullscreen rectangle.
* This transform will flip the texture left to right, scale it to a
* quarter of the window size and slide it to the top right of the
* window.
*/
cogl_push_matrix ();
cogl_translate (0.5, 0.5, 0);
cogl_scale (-0.5, 0.5, 1);
cogl_push_framebuffer (offscreen);
/* Cogl should release the last reference when we call cogl_pop_framebuffer()
*/
cogl_handle_unref (offscreen);
/* Setup something other than the identity matrix for the modelview so we can
* verify it gets restored when we call cogl_pop_framebuffer () */
cogl_scale (2, 2, 1);
/* red, top left */
cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff);
cogl_rectangle (-0.5, 0.5, 0, 0);
/* green, top right */
cogl_set_source_color4ub (0x00, 0xff, 0x00, 0xff);
cogl_rectangle (0, 0.5, 0.5, 0);
/* blue, bottom left */
cogl_set_source_color4ub (0x00, 0x00, 0xff, 0xff);
cogl_rectangle (-0.5, 0, 0, -0.5);
/* white, bottom right */
cogl_set_source_color4ub (0xff, 0xff, 0xff, 0xff);
cogl_rectangle (0, 0, 0.5, -0.5);
cogl_pop_framebuffer ();
cogl_set_source_texture (tex);
cogl_rectangle (-1, 1, 1, -1);
cogl_object_unref (tex_2d);
cogl_pop_matrix ();
/* NB: The texture is drawn flipped horizontally and scaled to fit in the
* top right corner of the window. */
/* red, top right */
check_quadrant (state, 1, 0, 0xff0000ff);
/* green, top left */
check_quadrant (state, 0, 0, 0x00ff00ff);
/* blue, bottom right */
check_quadrant (state, 1, 1, 0x0000ffff);
/* white, bottom left */
check_quadrant (state, 0, 1, 0xffffffff);
}
static void
test_flush (TestState *state)
{
CoglTexture2D *tex_2d;
CoglTexture *tex;
CoglHandle offscreen;
CoglColor clear_color;
int i;
for (i = 0; i < 3; i++)
{
/* This tests that rendering to a framebuffer and then reading back
the contents of the texture will automatically flush the
journal */
tex_2d = cogl_texture_2d_new_with_size (state->context,
16, 16, /* width/height */
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
NULL);
tex = COGL_TEXTURE (tex_2d);
offscreen = cogl_offscreen_new_to_texture (tex);
cogl_push_framebuffer (offscreen);
cogl_color_init_from_4ub (&clear_color, 0, 0, 0, 255);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
cogl_set_source_color4ub (255, 0, 0, 255);
cogl_rectangle (-1, -1, 1, 1);
if (i == 0)
/* First time check using read pixels on the offscreen */
test_utils_check_region (1, 1, 15, 15, 0xff0000ff);
else if (i == 1)
{
guint8 data[16 * 4 * 16];
int x, y;
/* Second time try reading back the texture contents */
cogl_texture_get_data (tex,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
16 * 4, /* rowstride */
data);
for (y = 1; y < 15; y++)
for (x = 1; x < 15; x++)
test_utils_compare_pixel (data + x * 4 + y * 16 * 4,
0xff0000ff);
}
cogl_pop_framebuffer ();
if (i == 2)
{
/* Third time try drawing the texture to the screen */
cogl_set_source_texture (tex);
cogl_rectangle (-1, -1, 1, 1);
test_utils_check_region (2, 2, /* x/y */
state->fb_width - 4,
state->fb_height - 4,
0xff0000ff);
}
cogl_object_unref (tex_2d);
cogl_handle_unref (offscreen);
}
}
void
test_cogl_offscreen (TestUtilsGTestFixture *fixture,
void *data)
{
TestUtilsSharedState *shared_state = data;
TestState state;
state.context = shared_state->ctx;
state.fb_width = cogl_framebuffer_get_width (shared_state->fb);
state.fb_height = cogl_framebuffer_get_height (shared_state->fb);
test_paint (&state);
test_flush (&state);
if (cogl_test_verbose ())
g_print ("OK\n");
}