[gtk/wip/otte/float-textures: 3/7] testsuite: Overhaul memorytexture test
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wip/otte/float-textures: 3/7] testsuite: Overhaul memorytexture test
- Date: Sun, 12 Sep 2021 03:33:13 +0000 (UTC)
commit 0c32a579237b774867fb6a6362d8646a31bb2c17
Author: Benjamin Otte <otte redhat com>
Date: Sat Sep 11 21:19:48 2021 +0200
testsuite: Overhaul memorytexture test
Instead of hardcoding pixel values, allow construction of textures by
filling them with GdkRGBA values.
testsuite/gdk/memorytexture.c | 449 ++++++++++++++++++++++++++++++------------
1 file changed, 327 insertions(+), 122 deletions(-)
---
diff --git a/testsuite/gdk/memorytexture.c b/testsuite/gdk/memorytexture.c
index ea24c827e3..49f7159965 100644
--- a/testsuite/gdk/memorytexture.c
+++ b/testsuite/gdk/memorytexture.c
@@ -1,9 +1,6 @@
#include <locale.h>
#include <gdk/gdk.h>
-/* maximum bytes per pixel */
-#define MAX_BPP 4
-
typedef enum {
BLUE,
GREEN,
@@ -13,7 +10,7 @@ typedef enum {
N_COLORS
} Color;
-const char * color_names[N_COLORS] = {
+static const char * color_names[N_COLORS] = {
"blue",
"green",
"red",
@@ -21,37 +18,310 @@ const char * color_names[N_COLORS] = {
"almost_opaque_rebeccapurple"
};
-typedef struct _MemoryData {
- gsize bytes_per_pixel;
- guint opaque : 1;
- guchar data[N_COLORS][MAX_BPP];
-} MemoryData;
+static const GdkRGBA colors[N_COLORS] = {
+ { 0.0, 0.0, 1.0, 1.0 },
+ { 0.0, 1.0, 0.0, 1.0 },
+ { 1.0, 0.0, 0.0, 1.0 },
+ { 0.0, 0.0, 0.0, 0.0 },
+ { 0.4, 0.2, 0.6, 2.f/3.f },
+};
+
+typedef struct _TextureBuilder TextureBuilder;
+typedef struct _TestData TestData;
+
+struct _TextureBuilder
+{
+ GdkMemoryFormat format;
+ int width;
+ int height;
+
+ guchar *pixels;
+ gsize stride;
+ gsize offset;
+};
-typedef struct _TestData {
+struct _TestData
+{
GdkMemoryFormat format;
Color color;
-} TestData;
-
-#define RGBA(a, b, c, d) { 0x ## a, 0x ## b, 0x ## c, 0x ## d }
-
-static MemoryData tests[GDK_MEMORY_N_FORMATS] = {
- { 4, FALSE, { RGBA(FF,00,00,FF), RGBA(00,FF,00,FF), RGBA(00,00,FF,FF), RGBA(00,00,00,00),
RGBA(66,22,44,AA) } },
- { 4, FALSE, { RGBA(FF,00,00,FF), RGBA(FF,00,FF,00), RGBA(FF,FF,00,00), RGBA(00,00,00,00),
RGBA(AA,44,22,66) } },
- { 4, FALSE, { RGBA(00,00,FF,FF), RGBA(00,FF,00,FF), RGBA(FF,00,00,FF), RGBA(00,00,00,00),
RGBA(44,22,66,AA) } },
- { 4, FALSE, { RGBA(FF,00,00,FF), RGBA(00,FF,00,FF), RGBA(00,00,FF,FF), RGBA(00,00,00,00),
RGBA(99,33,66,AA) } },
- { 4, FALSE, { RGBA(FF,00,00,FF), RGBA(FF,00,FF,00), RGBA(FF,FF,00,00), RGBA(00,00,00,00),
RGBA(AA,66,33,99) } },
- { 4, FALSE, { RGBA(00,00,FF,FF), RGBA(00,FF,00,FF), RGBA(FF,00,00,FF), RGBA(00,00,00,00),
RGBA(66,33,99,AA) } },
- { 4, FALSE, { RGBA(FF,FF,00,00), RGBA(FF,00,FF,00), RGBA(FF,00,00,FF), RGBA(00,00,00,00),
RGBA(AA,99,33,66) } },
- { 3, TRUE, { RGBA(00,00,FF,00), RGBA(00,FF,00,00), RGBA(FF,00,00,00), RGBA(00,00,00,00),
RGBA(44,22,66,00) } },
- { 3, TRUE, { RGBA(FF,00,00,00), RGBA(00,FF,00,00), RGBA(00,00,FF,00), RGBA(00,00,00,00),
RGBA(66,22,44,00) } },
};
+static gsize
+gdk_memory_format_bytes_per_pixel (GdkMemoryFormat format)
+{
+ switch (format)
+ {
+ case GDK_MEMORY_R8G8B8:
+ case GDK_MEMORY_B8G8R8:
+ return 3;
+
+ case GDK_MEMORY_B8G8R8A8_PREMULTIPLIED:
+ case GDK_MEMORY_A8R8G8B8_PREMULTIPLIED:
+ case GDK_MEMORY_R8G8B8A8_PREMULTIPLIED:
+ case GDK_MEMORY_B8G8R8A8:
+ case GDK_MEMORY_A8R8G8B8:
+ case GDK_MEMORY_R8G8B8A8:
+ case GDK_MEMORY_A8B8G8R8:
+ return 4;
+
+ case GDK_MEMORY_R16G16B16:
+ case GDK_MEMORY_R16G16B16_FLOAT:
+ return 6;
+
+ case GDK_MEMORY_R16G16B16A16_PREMULTIPLIED:
+ case GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED:
+ return 8;
+
+ case GDK_MEMORY_R32G32B32_FLOAT:
+ return 12;
+
+ case GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED:
+ return 16;
+
+ case GDK_MEMORY_N_FORMATS:
+ default:
+ g_assert_not_reached ();
+ return 4;
+ }
+}
+
+static gboolean
+gdk_memory_format_has_alpha (GdkMemoryFormat format)
+{
+ switch (format)
+ {
+ case GDK_MEMORY_R8G8B8:
+ case GDK_MEMORY_B8G8R8:
+ case GDK_MEMORY_R16G16B16:
+ case GDK_MEMORY_R16G16B16_FLOAT:
+ case GDK_MEMORY_R32G32B32_FLOAT:
+ return FALSE;
+
+ case GDK_MEMORY_B8G8R8A8_PREMULTIPLIED:
+ case GDK_MEMORY_A8R8G8B8_PREMULTIPLIED:
+ case GDK_MEMORY_R8G8B8A8_PREMULTIPLIED:
+ case GDK_MEMORY_B8G8R8A8:
+ case GDK_MEMORY_A8R8G8B8:
+ case GDK_MEMORY_R8G8B8A8:
+ case GDK_MEMORY_A8B8G8R8:
+ case GDK_MEMORY_R16G16B16A16_PREMULTIPLIED:
+ case GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED:
+ case GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED:
+ return TRUE;
+
+ case GDK_MEMORY_N_FORMATS:
+ default:
+ g_assert_not_reached ();
+ return TRUE;
+ }
+}
+
+static void
+texture_builder_init (TextureBuilder *builder,
+ GdkMemoryFormat format,
+ int width,
+ int height)
+{
+ gsize extra_stride;
+
+ builder->format = format;
+ builder->width = width;
+ builder->height = height;
+
+ extra_stride = g_test_rand_bit() ? g_test_rand_int_range (0, 16) : 0;
+ builder->offset = g_test_rand_bit() ? g_test_rand_int_range (0, 128) : 0;
+ builder->stride = width * gdk_memory_format_bytes_per_pixel (format) + extra_stride;
+ builder->pixels = g_malloc0 (builder->offset + builder->stride * height);
+}
+
+static GdkTexture *
+texture_builder_finish (TextureBuilder *builder)
+{
+ GBytes *bytes;
+ GdkTexture *texture;
+
+ bytes = g_bytes_new_with_free_func (builder->pixels + builder->offset,
+ builder->height * builder->stride,
+ g_free,
+ builder->pixels);
+ texture = gdk_memory_texture_new (builder->width,
+ builder->height,
+ builder->format,
+ bytes,
+ builder->stride);
+ g_bytes_unref (bytes);
+
+ return texture;
+}
+
+static inline void
+set_pixel_u8 (guchar *data,
+ int r,
+ int g,
+ int b,
+ int a,
+ gboolean premultiply,
+ const GdkRGBA *color)
+{
+ if (a >= 0)
+ data[a] = CLAMP (color->alpha * 256.f, 0.f, 255.f);
+ if (premultiply)
+ {
+ data[r] = CLAMP (color->red * color->alpha * 256.f, 0.f, 255.f);
+ data[g] = CLAMP (color->green * color->alpha * 256.f, 0.f, 255.f);
+ data[b] = CLAMP (color->blue * color->alpha * 256.f, 0.f, 255.f);
+ }
+ else
+ {
+ data[r] = CLAMP (color->red * 256.f, 0.f, 255.f);
+ data[g] = CLAMP (color->green * 256.f, 0.f, 255.f);
+ data[b] = CLAMP (color->blue * 256.f, 0.f, 255.f);
+ }
+}
+
+static inline guint16
+float_to_half (const float x)
+{
+ const guint b = *(guint*)&x+0x00001000; // round-to-nearest-even
+ const guint e = (b&0x7F800000)>>23; // exponent
+ const guint m = b&0x007FFFFF; // mantissa
+ return (b&0x80000000)>>16 | (e>112)*((((e-112)<<10)&0x7C00)|m>>13) |
((e<113)&(e>101))*((((0x007FF000+m)>>(125-e))+1)>>1) | (e>143)*0x7FFF; // sign : normalized : denormalized :
saturate
+}
+
+static void
+texture_builder_set_pixel (TextureBuilder *builder,
+ int x,
+ int y,
+ const GdkRGBA *color)
+{
+ guchar *data;
+
+ g_assert_cmpint (x, >=, 0);
+ g_assert_cmpint (x, <, builder->width);
+ g_assert_cmpint (y, >=, 0);
+ g_assert_cmpint (y, <, builder->height);
+
+ data = builder->pixels
+ + builder->offset
+ + y * builder->stride
+ + x * gdk_memory_format_bytes_per_pixel (builder->format);
+
+ switch (builder->format)
+ {
+ case GDK_MEMORY_B8G8R8A8_PREMULTIPLIED:
+ set_pixel_u8 (data, 2, 1, 0, 3, TRUE, color);
+ break;
+ case GDK_MEMORY_A8R8G8B8_PREMULTIPLIED:
+ set_pixel_u8 (data, 1, 2, 3, 0, TRUE, color);
+ break;
+ case GDK_MEMORY_R8G8B8A8_PREMULTIPLIED:
+ set_pixel_u8 (data, 0, 1, 2, 3, TRUE, color);
+ break;
+ case GDK_MEMORY_B8G8R8A8:
+ set_pixel_u8 (data, 2, 1, 0, 3, FALSE, color);
+ break;
+ case GDK_MEMORY_A8R8G8B8:
+ set_pixel_u8 (data, 1, 2, 3, 0, FALSE, color);
+ break;
+ case GDK_MEMORY_R8G8B8A8:
+ set_pixel_u8 (data, 0, 1, 2, 3, FALSE, color);
+ break;
+ case GDK_MEMORY_A8B8G8R8:
+ set_pixel_u8 (data, 3, 2, 1, 0, FALSE, color);
+ break;
+ case GDK_MEMORY_R8G8B8:
+ set_pixel_u8 (data, 0, 1, 2, -1, TRUE, color);
+ break;
+ case GDK_MEMORY_B8G8R8:
+ set_pixel_u8 (data, 2, 1, 0, -1, TRUE, color);
+ break;
+ case GDK_MEMORY_R16G16B16:
+ {
+ guint16 pixels[3] = {
+ CLAMP (color->red * color->alpha * 65536.f, 0, 65535.f),
+ CLAMP (color->green * color->alpha * 65536.f, 0, 65535.f),
+ CLAMP (color->blue * color->alpha * 65536.f, 0, 65535.f),
+ };
+ memcpy (data, pixels, 3 * sizeof (guint16));
+ }
+ break;
+ case GDK_MEMORY_R16G16B16A16_PREMULTIPLIED:
+ {
+ guint16 pixels[4] = {
+ CLAMP (color->red * color->alpha * 65536.f, 0, 65535.f),
+ CLAMP (color->green * color->alpha * 65536.f, 0, 65535.f),
+ CLAMP (color->blue * color->alpha * 65536.f, 0, 65535.f),
+ CLAMP (color->alpha * 65536.f, 0, 65535.f),
+ };
+ memcpy (data, pixels, 4 * sizeof (guint16));
+ }
+ break;
+ case GDK_MEMORY_R16G16B16_FLOAT:
+ {
+ guint16 pixels[3] = {
+ float_to_half (color->red * color->alpha),
+ float_to_half (color->green * color->alpha),
+ float_to_half (color->blue * color->alpha)
+ };
+ memcpy (data, pixels, 3 * sizeof (guint16));
+ }
+ break;
+ case GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED:
+ {
+ guint16 pixels[4] = {
+ float_to_half (color->red * color->alpha),
+ float_to_half (color->green * color->alpha),
+ float_to_half (color->blue * color->alpha),
+ float_to_half (color->alpha)
+ };
+ memcpy (data, pixels, 4 * sizeof (guint16));
+ }
+ break;
+ case GDK_MEMORY_R32G32B32_FLOAT:
+ {
+ float pixels[3] = {
+ color->red * color->alpha,
+ color->green * color->alpha,
+ color->blue * color->alpha
+ };
+ memcpy (data, pixels, 3 * sizeof (float));
+ }
+ break;
+ case GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED:
+ {
+ float pixels[4] = {
+ color->red * color->alpha,
+ color->green * color->alpha,
+ color->blue * color->alpha,
+ color->alpha
+ };
+ memcpy (data, pixels, 4 * sizeof (float));
+ }
+ break;
+ case GDK_MEMORY_N_FORMATS:
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+}
+
+static void
+texture_builder_fill (TextureBuilder *builder,
+ const GdkRGBA *color)
+{
+ int x, y;
+
+ for (y = 0; y < builder->height; y++)
+ for (x = 0; x < builder->width; x++)
+ texture_builder_set_pixel (builder, x, y, color);
+}
+
static void
compare_textures (GdkTexture *expected,
GdkTexture *test,
- gboolean ignore_alpha)
+ gboolean has_alpha)
{
- guchar *expected_data, *test_data;
+ guint32 *expected_data, *test_data;
int width, height;
int x, y;
@@ -61,20 +331,20 @@ compare_textures (GdkTexture *expected,
width = gdk_texture_get_width (expected);
height = gdk_texture_get_height (expected);
- expected_data = g_malloc (width * height * 4);
- gdk_texture_download (expected, expected_data, width * 4);
+ expected_data = g_new (guint32, width * height);
+ gdk_texture_download (expected, (guchar *) expected_data, width * 4);
- test_data = g_malloc (width * height * 4);
- gdk_texture_download (test, test_data, width * 4);
+ test_data = g_new (guint32, width * height);
+ gdk_texture_download (test, (guchar *) test_data, width * 4);
for (y = 0; y < height; y++)
{
for (x = 0; x < width; x++)
{
- if (ignore_alpha)
- g_assert_cmphex (*(guint32 *) &expected_data[y * width + x * 4] & 0xFFFFFF, ==, *(guint32 *)
&test_data[y * width + x * 4] & 0xFFFFFF);
+ if (has_alpha)
+ g_assert_cmphex (expected_data[y * width + x], ==, test_data[y * width + x]);
else
- g_assert_cmphex (*(guint32 *) &expected_data[y * width + x * 4], ==, *(guint32 *) &test_data[y *
width + x * 4]);
+ g_assert_cmphex (expected_data[y * width + x] | 0xFF000000, ==, test_data[y * width + x]);
}
}
@@ -84,33 +354,16 @@ compare_textures (GdkTexture *expected,
static GdkTexture *
create_texture (GdkMemoryFormat format,
- Color color,
int width,
int height,
- gsize stride)
+ const GdkRGBA *color)
{
- GdkTexture *texture;
- GBytes *bytes;
- guchar *data;
- int x, y;
+ TextureBuilder builder;
- data = g_malloc (height * MAX (stride, tests[format].bytes_per_pixel));
- for (y = 0; y < height; y++)
- for (x = 0; x < width; x++)
- {
- memcpy (&data[y * stride + x * tests[format].bytes_per_pixel],
- &tests[format].data[color],
- tests[format].bytes_per_pixel);
- }
+ texture_builder_init (&builder, format, width, height);
+ texture_builder_fill (&builder, color);
- bytes = g_bytes_new_take (data, height * MAX (stride, tests[format].bytes_per_pixel));
- texture = gdk_memory_texture_new (width, height,
- format,
- bytes,
- stride);
- g_bytes_unref (bytes);
-
- return texture;
+ return texture_builder_finish (&builder);
}
static void
@@ -119,25 +372,10 @@ test_download_1x1 (gconstpointer data)
const TestData *test_data = data;
GdkTexture *expected, *test;
- expected = create_texture (GDK_MEMORY_DEFAULT, test_data->color, 1, 1,
tests[test_data->format].bytes_per_pixel);
- test = create_texture (test_data->format, test_data->color, 1, 1,
tests[test_data->format].bytes_per_pixel);
+ expected = create_texture (GDK_MEMORY_DEFAULT, 1, 1, &colors[test_data->color]);
+ test = create_texture (test_data->format, 1, 1, &colors[test_data->color]);
- compare_textures (expected, test, tests[test_data->format].opaque);
-
- g_object_unref (expected);
- g_object_unref (test);
-}
-
-static void
-test_download_1x1_with_stride (gconstpointer data)
-{
- const TestData *test_data = data;
- GdkTexture *expected, *test;
-
- expected = create_texture (GDK_MEMORY_DEFAULT, test_data->color, 1, 1, 4);
- test = create_texture (test_data->format, test_data->color, 1, 1, 2 * MAX_BPP);
-
- compare_textures (expected, test, tests[test_data->format].opaque);
+ compare_textures (expected, test, gdk_memory_format_has_alpha (test_data->format));
g_object_unref (expected);
g_object_unref (test);
@@ -149,39 +387,23 @@ test_download_4x4 (gconstpointer data)
const TestData *test_data = data;
GdkTexture *expected, *test;
- expected = create_texture (GDK_MEMORY_DEFAULT, test_data->color, 4, 4, 16);
- test = create_texture (test_data->format, test_data->color, 4, 4, 4 *
tests[test_data->format].bytes_per_pixel);
+ expected = create_texture (GDK_MEMORY_DEFAULT, 4, 4, &colors[test_data->color]);
+ test = create_texture (test_data->format, 4, 4, &colors[test_data->color]);
- compare_textures (expected, test, tests[test_data->format].opaque);
+ compare_textures (expected, test, gdk_memory_format_has_alpha (test_data->format));
g_object_unref (expected);
g_object_unref (test);
}
static void
-test_download_4x4_with_stride (gconstpointer data)
-{
- const TestData *test_data = data;
- GdkTexture *expected, *test;
-
- expected = create_texture (GDK_MEMORY_DEFAULT, test_data->color, 4, 4, 16);
- test = create_texture (test_data->format, test_data->color, 4, 4, 4 * MAX_BPP);
-
- compare_textures (expected, test, tests[test_data->format].opaque);
-
- g_object_unref (expected);
- g_object_unref (test);
-}
-
-int
-main (int argc, char *argv[])
+add_test (const char *name,
+ GTestDataFunc func)
{
GdkMemoryFormat format;
Color color;
GEnumClass *enum_class;
- (g_test_init) (&argc, &argv, NULL);
-
enum_class = g_type_class_ref (GDK_TYPE_MEMORY_FORMAT);
for (format = 0; format < GDK_MEMORY_N_FORMATS; format++)
@@ -189,42 +411,25 @@ main (int argc, char *argv[])
for (color = 0; color < N_COLORS; color++)
{
TestData *test_data = g_new (TestData, 1);
- char *test_name = g_strdup_printf ("/memorytexture/download_1x1/%s/%s",
+ char *test_name = g_strdup_printf ("%s/%s/%s",
+ name,
g_enum_get_value (enum_class, format)->value_nick,
color_names[color]);
test_data->format = format;
test_data->color = color;
g_test_add_data_func_full (test_name, test_data, test_download_1x1, g_free);
g_free (test_name);
-
- test_data = g_new (TestData, 1);
- test_name = g_strdup_printf ("/memorytexture/download_1x1_with_stride/%s/%s",
- g_enum_get_value (enum_class, format)->value_nick,
- color_names[color]);
- test_data->format = format;
- test_data->color = color;
- g_test_add_data_func_full (test_name, test_data, test_download_1x1_with_stride, g_free);
- g_free (test_name);
-
- test_data = g_new (TestData, 1);
- test_name = g_strdup_printf ("/memorytexture/download_4x4/%s/%s",
- g_enum_get_value (enum_class, format)->value_nick,
- color_names[color]);
- test_data->format = format;
- test_data->color = color;
- g_test_add_data_func_full (test_name, test_data, test_download_4x4, g_free);
- g_free (test_name);
-
- test_data = g_new (TestData, 1);
- test_name = g_strdup_printf ("/memorytexture/download_4x4_with_stride/%s/%s",
- g_enum_get_value (enum_class, format)->value_nick,
- color_names[color]);
- test_data->format = format;
- test_data->color = color;
- g_test_add_data_func_full (test_name, test_data, test_download_4x4_with_stride, g_free);
- g_free (test_name);
}
}
+}
+
+int
+main (int argc, char *argv[])
+{
+ (g_test_init) (&argc, &argv, NULL);
+
+ add_test ("/memorytexture/download_1x1", test_download_1x1);
+ add_test ("/memorytexture/download_4x4", test_download_4x4);
return g_test_run ();
}
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