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tests: Test reading all pixel formats

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The test-read-alpha-texture test has been replaced with a test that
tries reading an RGBA texture in all current pixel formats. On GLES2
this should end up testing all of the convesion code because in that
case GL only supports reading back RGBA data. The test now works on
GLES2 since the conversion code for all of the formats has been added
so this also removes the GL requirement.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
This commit is contained in:
Neil Roberts 2012-02-29 21:43:01 +00:00
parent 908ba29be5
commit 70dfbdd5e3
4 changed files with 205 additions and 46 deletions
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2
tests/conform/Makefile.am
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@ -48,7 +48,7 @@ test_sources = \
test-primitive.c \
test-texture-3d.c \
test-sparse-pipeline.c \
test-read-alpha-texture.c \
test-read-texture-formats.c \
$(NULL)
test_conformance_SOURCES = $(common_sources) $(test_sources)

4
tests/conform/test-conform-main.c
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@ -81,9 +81,7 @@ main (int argc, char **argv)
UNPORTED_TEST (test_cogl_texture_pixmap_x11);
UNPORTED_TEST (test_cogl_texture_get_set_data);
UNPORTED_TEST (test_cogl_atlas_migration);
/* This doesn't currently work on GLES because there is no fallback
conversion to/from alpha-only */
ADD_TEST (test_cogl_read_alpha_texture, TEST_REQUIREMENT_GL);
ADD_TEST (test_cogl_read_texture_formats, 0);
UNPORTED_TEST (test_cogl_vertex_buffer_contiguous);
UNPORTED_TEST (test_cogl_vertex_buffer_interleved);

42
tests/conform/test-read-alpha-texture.c
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@ -1,42 +0,0 @@
#include <cogl/cogl2-experimental.h>
#include "test-utils.h"
/*
* This tests reading back an RGBA texture in alpha-only format.
* This test just exists because I accidentally broke it and
* gnome-shell is doing it.
*
* https://bugzilla.gnome.org/show_bug.cgi?id=671016
*/
static const guint8 tex_data[4] = { 0x12, 0x34, 0x56, 0x78 };
void
test_cogl_read_alpha_texture (TestUtilsGTestFixture *fixture,
void *data)
{
TestUtilsSharedState *shared_state = data;
CoglTexture2D *tex_2d;
guint8 alpha_value;
tex_2d = cogl_texture_2d_new_from_data (shared_state->ctx,
1, 1, /* width / height */
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
4, /* rowstride */
tex_data,
NULL);
cogl_texture_get_data (COGL_TEXTURE (tex_2d),
COGL_PIXEL_FORMAT_A_8,
1, /* rowstride */
&alpha_value);
cogl_object_unref (tex_2d);
g_assert_cmpint (alpha_value, ==, 0x78);
if (g_test_verbose ())
g_print ("OK\n");
}

203
tests/conform/test-read-texture-formats.c Normal file
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@ -0,0 +1,203 @@
#include <cogl/cogl2-experimental.h>
#include <stdarg.h>
#include "test-utils.h"
/*
* This tests reading back an RGBA texture in all of the available
* pixel formats
*/
static const guint8 tex_data[4] = { 0x12, 0x34, 0x56, 0x78 };
static void
test_read_byte (CoglTexture2D *tex_2d,
CoglPixelFormat format,
guint8 expected_byte)
{
guint8 received_byte;
cogl_texture_get_data (COGL_TEXTURE (tex_2d),
format,
1, /* rowstride */
&received_byte);
g_assert_cmpint (expected_byte, ==, received_byte);
}
static void
test_read_short (CoglTexture2D *tex_2d,
CoglPixelFormat format,
...)
{
va_list ap;
int bits;
guint16 received_value;
guint16 expected_value = 0;
char *received_value_str;
char *expected_value_str;
int bits_sum = 0;
cogl_texture_get_data (COGL_TEXTURE (tex_2d),
format,
2, /* rowstride */
(guint8 *) &received_value);
va_start (ap, format);
/* Convert the va args into a single 16-bit expected value */
while ((bits = va_arg (ap, int)) != -1)
{
int value = (va_arg (ap, int) * ((1 << bits) - 1) + 128) / 255;
bits_sum += bits;
expected_value |= value << (16 - bits_sum);
}
va_end (ap);
received_value_str = g_strdup_printf ("0x%04x", received_value);
expected_value_str = g_strdup_printf ("0x%04x", expected_value);
g_assert_cmpstr (received_value_str, ==, expected_value_str);
g_free (received_value_str);
g_free (expected_value_str);
}
static void
test_read_888 (CoglTexture2D *tex_2d,
CoglPixelFormat format,
guint32 expected_pixel)
{
guint8 pixel[4];
cogl_texture_get_data (COGL_TEXTURE (tex_2d),
format,
4, /* rowstride */
pixel);
test_utils_compare_pixel (pixel, expected_pixel);
}
static void
test_read_8888 (CoglTexture2D *tex_2d,
CoglPixelFormat format,
guint32 expected_pixel)
{
guint32 received_pixel;
char *received_value_str;
char *expected_value_str;
cogl_texture_get_data (COGL_TEXTURE (tex_2d),
format,
4, /* rowstride */
(guint8 *) &received_pixel);
received_pixel = GUINT32_FROM_BE (received_pixel);
received_value_str = g_strdup_printf ("0x%08x", received_pixel);
expected_value_str = g_strdup_printf ("0x%08x", expected_pixel);
g_assert_cmpstr (received_value_str, ==, expected_value_str);
g_free (received_value_str);
g_free (expected_value_str);
}
static void
test_read_int (CoglTexture2D *tex_2d,
CoglPixelFormat format,
...)
{
va_list ap;
int bits;
guint32 received_value;
guint32 expected_value = 0;
char *received_value_str;
char *expected_value_str;
int bits_sum = 0;
cogl_texture_get_data (COGL_TEXTURE (tex_2d),
format,
4, /* rowstride */
(guint8 *) &received_value);
va_start (ap, format);
/* Convert the va args into a single 32-bit expected value */
while ((bits = va_arg (ap, int)) != -1)
{
guint32 value = (va_arg (ap, int) * ((1 << bits) - 1) + 128) / 255;
bits_sum += bits;
expected_value |= value << (32 - bits_sum);
}
va_end (ap);
received_value_str = g_strdup_printf ("0x%08x", received_value);
expected_value_str = g_strdup_printf ("0x%08x", expected_value);
g_assert_cmpstr (received_value_str, ==, expected_value_str);
g_free (received_value_str);
g_free (expected_value_str);
}
void
test_cogl_read_texture_formats (TestUtilsGTestFixture *fixture,
void *data)
{
TestUtilsSharedState *shared_state = data;
CoglTexture2D *tex_2d;
tex_2d = cogl_texture_2d_new_from_data (shared_state->ctx,
1, 1, /* width / height */
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
4, /* rowstride */
tex_data,
NULL);
test_read_byte (tex_2d, COGL_PIXEL_FORMAT_A_8, 0x78);
#if 0
/* I'm not sure what's the right value to put here because Nvidia
and Mesa seem to behave differently so one of them must be
wrong. */
test_read_byte (tex_2d, COGL_PIXEL_FORMAT_G_8, 0x9c);
#endif
test_read_short (tex_2d, COGL_PIXEL_FORMAT_RGB_565,
5, 0x12, 6, 0x34, 5, 0x56,
-1);
test_read_short (tex_2d, COGL_PIXEL_FORMAT_RGBA_4444_PRE,
4, 0x12, 4, 0x34, 4, 0x56, 4, 0x78,
-1);
test_read_short (tex_2d, COGL_PIXEL_FORMAT_RGBA_5551_PRE,
5, 0x12, 5, 0x34, 5, 0x56, 1, 0x78,
-1);
test_read_888 (tex_2d, COGL_PIXEL_FORMAT_RGB_888, 0x123456ff);
test_read_888 (tex_2d, COGL_PIXEL_FORMAT_BGR_888, 0x563412ff);
test_read_8888 (tex_2d, COGL_PIXEL_FORMAT_RGBA_8888_PRE, 0x12345678);
test_read_8888 (tex_2d, COGL_PIXEL_FORMAT_BGRA_8888_PRE, 0x56341278);
test_read_8888 (tex_2d, COGL_PIXEL_FORMAT_ARGB_8888_PRE, 0x78123456);
test_read_8888 (tex_2d, COGL_PIXEL_FORMAT_ABGR_8888_PRE, 0x78563412);
test_read_int (tex_2d, COGL_PIXEL_FORMAT_RGBA_1010102_PRE,
10, 0x12, 10, 0x34, 10, 0x56, 2, 0x78,
-1);
test_read_int (tex_2d, COGL_PIXEL_FORMAT_BGRA_1010102_PRE,
10, 0x56, 10, 0x34, 10, 0x12, 2, 0x78,
-1);
test_read_int (tex_2d, COGL_PIXEL_FORMAT_ARGB_2101010_PRE,
2, 0x78, 10, 0x12, 10, 0x34, 10, 0x56,
-1);
test_read_int (tex_2d, COGL_PIXEL_FORMAT_ABGR_2101010_PRE,
2, 0x78, 10, 0x56, 10, 0x34, 10, 0x12,
-1);
cogl_object_unref (tex_2d);
if (g_test_verbose ())
g_print ("OK\n");
}