/*
* Copyright © 2021 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see .
*
* Authors: Benjamin Otte
*/
#include "config.h"
#include "gdkmemoryformatprivate.h"
#include "gdkdmabuffourccprivate.h"
#include "gdkglcontextprivate.h"
#include "gdkcolorstateprivate.h"
#include "gtk/gtkcolorutilsprivate.h"
#include "gsk/gl/fp16private.h"
#include
G_STATIC_ASSERT ((1 << GDK_MEMORY_DEPTH_BITS) > GDK_N_DEPTHS);
typedef struct _GdkMemoryFormatDescription GdkMemoryFormatDescription;
#define TYPED_FUNCS(name, T, R, G, B, A, bpp, scale) \
static void \
name ## _to_float (float (*dest)[4], \
const guchar *src_data, \
gsize n) \
{ \
for (gsize i = 0; i < n; i++) \
{ \
T *src = (T *) (src_data + i * bpp); \
dest[i][0] = (float) src[R] / scale; \
dest[i][1] = (float) src[G] / scale; \
dest[i][2] = (float) src[B] / scale; \
if (A >= 0) dest[i][3] = (float) src[A] / scale; else dest[i][3] = 1.0; \
} \
} \
\
static void \
name ## _from_float (guchar *dest_data, \
const float (*src)[4], \
gsize n) \
{ \
for (gsize i = 0; i < n; i++) \
{ \
T *dest = (T *) (dest_data + i * bpp); \
dest[R] = CLAMP (src[i][0] * scale + 0.5, 0, scale); \
dest[G] = CLAMP (src[i][1] * scale + 0.5, 0, scale); \
dest[B] = CLAMP (src[i][2] * scale + 0.5, 0, scale); \
if (A >= 0) dest[A] = CLAMP (src[i][3] * scale + 0.5, 0, scale); \
} \
}
#define TYPED_GRAY_FUNCS(name, T, G, A, bpp, scale) \
static void \
name ## _to_float (float (*dest)[4], \
const guchar *src_data, \
gsize n) \
{ \
for (gsize i = 0; i < n; i++) \
{ \
T *src = (T *) (src_data + i * bpp); \
if (A >= 0) dest[i][3] = (float) src[A] / scale; else dest[i][3] = 1.0; \
if (G >= 0) dest[i][0] = (float) src[G] / scale; else dest[i][0] = dest[i][3]; \
dest[i][1] = dest[i][2] = dest[i][0]; \
} \
} \
\
static void \
name ## _from_float (guchar *dest_data, \
const float (*src)[4], \
gsize n) \
{ \
for (gsize i = 0; i < n; i++) \
{ \
T *dest = (T *) (dest_data + i * bpp); \
if (G >= 0) dest[G] = CLAMP ((src[i][0] + src[i][1] + src[i][2]) * scale / 3.f + 0.5, 0, scale); \
if (A >= 0) dest[A] = CLAMP (src[i][3] * scale + 0.5, 0, scale); \
} \
}
TYPED_FUNCS (b8g8r8a8_premultiplied, guchar, 2, 1, 0, 3, 4, 255)
TYPED_FUNCS (a8r8g8b8_premultiplied, guchar, 1, 2, 3, 0, 4, 255)
TYPED_FUNCS (r8g8b8a8_premultiplied, guchar, 0, 1, 2, 3, 4, 255)
TYPED_FUNCS (a8b8g8r8_premultiplied, guchar, 3, 2, 1, 0, 4, 255)
TYPED_FUNCS (b8g8r8a8, guchar, 2, 1, 0, 3, 4, 255)
TYPED_FUNCS (a8r8g8b8, guchar, 1, 2, 3, 0, 4, 255)
TYPED_FUNCS (r8g8b8a8, guchar, 0, 1, 2, 3, 4, 255)
TYPED_FUNCS (a8b8g8r8, guchar, 3, 2, 1, 0, 4, 255)
TYPED_FUNCS (r8g8b8x8, guchar, 0, 1, 2, -1, 4, 255)
TYPED_FUNCS (x8r8g8b8, guchar, 1, 2, 3, -1, 4, 255)
TYPED_FUNCS (b8g8r8x8, guchar, 2, 1, 0, -1, 4, 255)
TYPED_FUNCS (x8b8g8r8, guchar, 3, 2, 1, -1, 4, 255)
TYPED_FUNCS (r8g8b8, guchar, 0, 1, 2, -1, 3, 255)
TYPED_FUNCS (b8g8r8, guchar, 2, 1, 0, -1, 3, 255)
TYPED_FUNCS (r16g16b16, guint16, 0, 1, 2, -1, 6, 65535)
TYPED_FUNCS (r16g16b16a16, guint16, 0, 1, 2, 3, 8, 65535)
TYPED_GRAY_FUNCS (g8a8_premultiplied, guchar, 0, 1, 2, 255)
TYPED_GRAY_FUNCS (g8a8, guchar, 0, 1, 2, 255)
TYPED_GRAY_FUNCS (g8, guchar, 0, -1, 1, 255)
TYPED_GRAY_FUNCS (a8, guchar, -1, 0, 1, 255)
TYPED_GRAY_FUNCS (g16a16_premultiplied, guint16, 0, 1, 4, 65535)
TYPED_GRAY_FUNCS (g16a16, guint16, 0, 1, 4, 65535)
TYPED_GRAY_FUNCS (g16, guint16, 0, -1, 2, 65535)
TYPED_GRAY_FUNCS (a16, guint16, -1, 0, 2, 65535)
static void
r16g16b16_float_to_float (float (*dest)[4],
const guchar *src_data,
gsize n)
{
guint16 *src = (guint16 *) src_data;
for (gsize i = 0; i < n; i++)
{
half_to_float (src, dest[i], 3);
dest[i][3] = 1.0;
src += 3;
}
}
static void
r16g16b16_float_from_float (guchar *dest_data,
const float (*src)[4],
gsize n)
{
guint16 *dest = (guint16 *) dest_data;
for (gsize i = 0; i < n; i++)
{
float_to_half (src[i], dest, 3);
dest += 3;
}
}
static void
r16g16b16a16_float_to_float (float (*dest)[4],
const guchar *src,
gsize n)
{
half_to_float ((const guint16 *) src, (float *) dest, 4 * n);
}
static void
r16g16b16a16_float_from_float (guchar *dest,
const float (*src)[4],
gsize n)
{
float_to_half ((const float *) src, (guint16 *) dest, 4 * n);
}
static void
a16_float_to_float (float (*dest)[4],
const guchar *src_data,
gsize n)
{
const guint16 *src = (const guint16 *) src_data;
for (gsize i = 0; i < n; i++)
{
half_to_float (src, &dest[i][0], 1);
dest[i][1] = dest[i][0];
dest[i][2] = dest[i][0];
dest[i][3] = dest[i][0];
src++;
}
}
static void
a16_float_from_float (guchar *dest_data,
const float (*src)[4],
gsize n)
{
guint16 *dest = (guint16 *) dest_data;
for (gsize i = 0; i < n; i++)
{
float_to_half (&src[i][3], dest, 1);
dest ++;
}
}
static void
r32g32b32_float_to_float (float (*dest)[4],
const guchar *src_data,
gsize n)
{
const float (*src)[3] = (const float (*)[3]) src_data;
for (gsize i = 0; i < n; i++)
{
dest[i][0] = src[i][0];
dest[i][1] = src[i][1];
dest[i][2] = src[i][2];
dest[i][3] = 1.0;
}
}
static void
r32g32b32_float_from_float (guchar *dest_data,
const float (*src)[4],
gsize n)
{
float (*dest)[3] = (float (*)[3]) dest_data;
for (gsize i = 0; i < n; i++)
{
dest[i][0] = src[i][0];
dest[i][1] = src[i][1];
dest[i][2] = src[i][2];
}
}
static void
r32g32b32a32_float_to_float (float (*dest)[4],
const guchar *src,
gsize n)
{
memcpy (dest, src, sizeof (float) * n * 4);
}
static void
r32g32b32a32_float_from_float (guchar *dest,
const float (*src)[4],
gsize n)
{
memcpy (dest, src, sizeof (float) * n * 4);
}
static void
a32_float_to_float (float (*dest)[4],
const guchar *src_data,
gsize n)
{
const float *src = (const float *) src_data;
for (gsize i = 0; i < n; i++)
{
dest[i][0] = src[i];
dest[i][1] = src[i];
dest[i][2] = src[i];
dest[i][3] = src[i];
}
}
static void
a32_float_from_float (guchar *dest_data,
const float (*src)[4],
gsize n)
{
float *dest = (float *) dest_data;
for (gsize i = 0; i < n; i++)
{
dest[i] = src[i][3];
}
}
#define PREMULTIPLY_FUNC(name, R1, G1, B1, A1, R2, G2, B2, A2) \
static void \
name (guchar *dest, \
const guchar *src, \
gsize n) \
{ \
for (; n > 0; n--) \
{ \
guchar a = src[A1]; \
guint16 r = (guint16)src[R1] * a + 127; \
guint16 g = (guint16)src[G1] * a + 127; \
guint16 b = (guint16)src[B1] * a + 127; \
dest[R2] = (r + (r >> 8) + 1) >> 8; \
dest[G2] = (g + (g >> 8) + 1) >> 8; \
dest[B2] = (b + (b >> 8) + 1) >> 8; \
dest[A2] = a; \
dest += 4; \
src += 4; \
} \
}
PREMULTIPLY_FUNC(r8g8b8a8_to_r8g8b8a8_premultiplied, 0, 1, 2, 3, 0, 1, 2, 3)
PREMULTIPLY_FUNC(r8g8b8a8_to_b8g8r8a8_premultiplied, 0, 1, 2, 3, 2, 1, 0, 3)
PREMULTIPLY_FUNC(r8g8b8a8_to_a8r8g8b8_premultiplied, 0, 1, 2, 3, 1, 2, 3, 0)
PREMULTIPLY_FUNC(r8g8b8a8_to_a8b8g8r8_premultiplied, 0, 1, 2, 3, 3, 2, 1, 0)
#define ADD_ALPHA_FUNC(name, R1, G1, B1, R2, G2, B2, A2) \
static void \
name (guchar *dest, \
const guchar *src, \
gsize n) \
{ \
for (; n > 0; n--) \
{ \
dest[R2] = src[R1]; \
dest[G2] = src[G1]; \
dest[B2] = src[B1]; \
dest[A2] = 255; \
dest += 4; \
src += 3; \
} \
}
ADD_ALPHA_FUNC(r8g8b8_to_r8g8b8a8, 0, 1, 2, 0, 1, 2, 3)
ADD_ALPHA_FUNC(r8g8b8_to_b8g8r8a8, 0, 1, 2, 2, 1, 0, 3)
ADD_ALPHA_FUNC(r8g8b8_to_a8r8g8b8, 0, 1, 2, 1, 2, 3, 0)
ADD_ALPHA_FUNC(r8g8b8_to_a8b8g8r8, 0, 1, 2, 3, 2, 1, 0)
struct _GdkMemoryFormatDescription
{
const char *name;
GdkMemoryAlpha alpha;
GdkMemoryFormat premultiplied;
GdkMemoryFormat straight;
gsize bytes_per_pixel;
gsize alignment;
GdkMemoryDepth depth;
const GdkMemoryFormat *fallbacks;
struct {
GLint internal_gl_format;
GLint internal_gles_format;
GLint internal_srgb_format;
GLenum format;
GLenum srgb_format;
GLenum type;
GLint swizzle[4];
/* -1 if none exists, ie the format is already RGBA
* or the format doesn't have 4 channels */
GdkMemoryFormat rgba_format;
GLint rgba_swizzle[4];
} gl;
#ifdef GDK_RENDERING_VULKAN
VkFormat vk_format;
VkFormat vk_srgb_format;
#endif
#ifdef HAVE_DMABUF
guint32 dmabuf_fourcc;
#endif
/* no premultiplication going on here */
void (* to_float) (float (*)[4], const guchar*, gsize);
void (* from_float) (guchar *, const float (*)[4], gsize);
};
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
# define GDK_GL_UNSIGNED_BYTE_FLIPPED GL_UNSIGNED_INT_8_8_8_8
#elif G_BYTE_ORDER == G_BIG_ENDIAN
# define GDK_GL_UNSIGNED_BYTE_FLIPPED GL_UNSIGNED_INT_8_8_8_8_REV
#else
# error "Define the right GL flags here"
#endif
static const GdkMemoryFormatDescription memory_formats[] = {
[GDK_MEMORY_B8G8R8A8_PREMULTIPLIED] = {
.name = "BGRA8(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_B8G8R8A8_PREMULTIPLIED,
.straight = GDK_MEMORY_B8G8R8A8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_BGRA,
.internal_srgb_format = -1,
.format = GL_BGRA,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
.rgba_swizzle = { GL_BLUE, GL_GREEN, GL_RED, GL_ALPHA },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_B8G8R8A8_UNORM,
.vk_srgb_format = VK_FORMAT_B8G8R8A8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_ARGB8888,
#endif
.to_float = b8g8r8a8_premultiplied_to_float,
.from_float = b8g8r8a8_premultiplied_from_float,
},
[GDK_MEMORY_A8R8G8B8_PREMULTIPLIED] = {
.name = "ARGB8(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_A8R8G8B8_PREMULTIPLIED,
.straight = GDK_MEMORY_A8R8G8B8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_BGRA,
.type = GDK_GL_UNSIGNED_BYTE_FLIPPED,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
.rgba_swizzle = { GL_GREEN, GL_BLUE, GL_ALPHA, GL_RED },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_UNDEFINED,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_BGRA8888,
#endif
.to_float = a8r8g8b8_premultiplied_to_float,
.from_float = a8r8g8b8_premultiplied_from_float,
},
[GDK_MEMORY_R8G8B8A8_PREMULTIPLIED] = {
.name = "RGBA8(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
.straight = GDK_MEMORY_R8G8B8A8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_RGBA,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R8G8B8A8_UNORM,
.vk_srgb_format = VK_FORMAT_R8G8B8A8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_ABGR8888,
#endif
.to_float = r8g8b8a8_premultiplied_to_float,
.from_float = r8g8b8a8_premultiplied_from_float,
},
[GDK_MEMORY_A8B8G8R8_PREMULTIPLIED] = {
.name = "ABGR8(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_A8B8G8R8_PREMULTIPLIED,
.straight = GDK_MEMORY_A8B8G8R8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_RGBA,
.type = GDK_GL_UNSIGNED_BYTE_FLIPPED,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
.rgba_swizzle = { GL_ALPHA, GL_BLUE, GL_GREEN, GL_RED },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_UNDEFINED,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_RGBA8888,
#endif
.to_float = a8b8g8r8_premultiplied_to_float,
.from_float = a8b8g8r8_premultiplied_from_float,
},
[GDK_MEMORY_B8G8R8A8] = {
.name = "BGRA8",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_B8G8R8A8_PREMULTIPLIED,
.straight = GDK_MEMORY_B8G8R8A8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_BGRA,
.internal_srgb_format = -1,
.format = GL_BGRA,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = GDK_MEMORY_R8G8B8A8,
.rgba_swizzle = { GL_BLUE, GL_GREEN, GL_RED, GL_ALPHA },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_B8G8R8A8_UNORM,
.vk_srgb_format = VK_FORMAT_B8G8R8A8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_ARGB8888,
#endif
.to_float = b8g8r8a8_to_float,
.from_float = b8g8r8a8_from_float,
},
[GDK_MEMORY_A8R8G8B8] = {
.name = "ARGB8",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_A8R8G8B8_PREMULTIPLIED,
.straight = GDK_MEMORY_A8R8G8B8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_BGRA,
.type = GDK_GL_UNSIGNED_BYTE_FLIPPED,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = GDK_MEMORY_R8G8B8A8,
.rgba_swizzle = { GL_GREEN, GL_BLUE, GL_ALPHA, GL_RED },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_UNDEFINED,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_BGRA8888,
#endif
.to_float = a8r8g8b8_to_float,
.from_float = a8r8g8b8_from_float,
},
[GDK_MEMORY_R8G8B8A8] = {
.name = "RGBA8",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
.straight = GDK_MEMORY_R8G8B8A8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_RGBA,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R8G8B8A8_UNORM,
.vk_srgb_format = VK_FORMAT_R8G8B8A8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_ABGR8888,
#endif
.to_float = r8g8b8a8_to_float,
.from_float = r8g8b8a8_from_float,
},
[GDK_MEMORY_A8B8G8R8] = {
.name = "ABGR8",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_A8B8G8R8_PREMULTIPLIED,
.straight = GDK_MEMORY_A8B8G8R8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_RGBA,
.type = GDK_GL_UNSIGNED_BYTE_FLIPPED,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = GDK_MEMORY_R8G8B8A8,
.rgba_swizzle = { GL_ALPHA, GL_BLUE, GL_GREEN, GL_RED },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_UNDEFINED,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_RGBA8888,
#endif
.to_float = a8b8g8r8_to_float,
.from_float = a8b8g8r8_from_float,
},
[GDK_MEMORY_B8G8R8X8] = {
.name = "BGRX8",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_B8G8R8X8,
.straight = GDK_MEMORY_B8G8R8X8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_BGRA,
.internal_srgb_format = -1,
.format = GL_BGRA,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ONE },
.rgba_format = GDK_MEMORY_R8G8B8X8,
.rgba_swizzle = { GL_BLUE, GL_GREEN, GL_RED, GL_ONE },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_B8G8R8A8_UNORM,
.vk_srgb_format = VK_FORMAT_B8G8R8A8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_XRGB8888,
#endif
.to_float = b8g8r8x8_to_float,
.from_float = b8g8r8x8_from_float,
},
[GDK_MEMORY_X8R8G8B8] = {
.name = "XRGB8",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_X8R8G8B8,
.straight = GDK_MEMORY_X8R8G8B8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_BGRA,
.type = GDK_GL_UNSIGNED_BYTE_FLIPPED,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ONE },
.rgba_format = GDK_MEMORY_R8G8B8A8,
.rgba_swizzle = { GL_GREEN, GL_BLUE, GL_ALPHA, GL_ONE },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_UNDEFINED,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_BGRX8888,
#endif
.to_float = x8r8g8b8_to_float,
.from_float = x8r8g8b8_from_float,
},
[GDK_MEMORY_R8G8B8X8] = {
.name = "RGBX8",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_R8G8B8X8,
.straight = GDK_MEMORY_R8G8B8X8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_RGBA,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ONE },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R8G8B8A8_UNORM,
.vk_srgb_format = VK_FORMAT_R8G8B8A8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_XBGR8888,
#endif
.to_float = r8g8b8x8_to_float,
.from_float = r8g8b8x8_from_float,
},
[GDK_MEMORY_X8B8G8R8] = {
.name = "XBGR8",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_X8B8G8R8,
.straight = GDK_MEMORY_X8B8G8R8,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA8,
.internal_gles_format = GL_RGBA8,
.internal_srgb_format = GL_SRGB8_ALPHA8,
.format = GL_RGBA,
.type = GDK_GL_UNSIGNED_BYTE_FLIPPED,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ONE },
.rgba_format = GDK_MEMORY_R8G8B8A8,
.rgba_swizzle = { GL_ALPHA, GL_BLUE, GL_GREEN, GL_ONE },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_UNDEFINED,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_RGBX8888,
#endif
.to_float = x8b8g8r8_to_float,
.from_float = x8b8g8r8_from_float,
},
[GDK_MEMORY_R8G8B8] = {
.name = "RGB8",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_R8G8B8,
.straight = GDK_MEMORY_R8G8B8,
.bytes_per_pixel = 3,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGB8,
.internal_gles_format = GL_RGB8,
.internal_srgb_format = GL_SRGB8,
.format = GL_RGB,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R8G8B8_UNORM,
.vk_srgb_format = VK_FORMAT_R8G8B8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_BGR888,
#endif
.to_float = r8g8b8_to_float,
.from_float = r8g8b8_from_float,
},
[GDK_MEMORY_B8G8R8] = {
.name = "BGR8",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_B8G8R8,
.straight = GDK_MEMORY_B8G8R8,
.bytes_per_pixel = 3,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGB8,
.internal_gles_format = GL_RGB8,
.internal_srgb_format = GL_SRGB8,
.format = GL_BGR,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = GDK_MEMORY_R8G8B8,
.rgba_swizzle = { GL_BLUE, GL_GREEN, GL_RED, GL_ALPHA },
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_B8G8R8_UNORM,
.vk_srgb_format = VK_FORMAT_B8G8R8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_RGB888,
#endif
.to_float = b8g8r8_to_float,
.from_float = b8g8r8_from_float,
},
[GDK_MEMORY_R16G16B16] = {
.name = "RGB16",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_R16G16B16,
.straight = GDK_MEMORY_R16G16B16,
.bytes_per_pixel = 6,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_U16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16_PREMULTIPLIED,
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGB16,
.internal_gles_format = GL_RGB16,
.internal_srgb_format = -1,
.format = GL_RGB,
.type = GL_UNSIGNED_SHORT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16G16B16_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = r16g16b16_to_float,
.from_float = r16g16b16_from_float,
},
[GDK_MEMORY_R16G16B16A16_PREMULTIPLIED] = {
.name = "RGBA16(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_R16G16B16A16_PREMULTIPLIED,
.straight = GDK_MEMORY_R16G16B16A16,
.bytes_per_pixel = 8,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_U16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA16,
.internal_gles_format = GL_RGBA16,
.internal_srgb_format = -1,
.format = GL_RGBA,
.type = GL_UNSIGNED_SHORT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16G16B16A16_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_ABGR16161616,
#endif
.to_float = r16g16b16a16_to_float,
.from_float = r16g16b16a16_from_float,
},
[GDK_MEMORY_R16G16B16A16] = {
.name = "RGBA16",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_R16G16B16A16_PREMULTIPLIED,
.straight = GDK_MEMORY_R16G16B16A16,
.bytes_per_pixel = 8,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_U16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R32G32B32A32_FLOAT,
GDK_MEMORY_R16G16B16A16_FLOAT,
GDK_MEMORY_R8G8B8A8,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA16,
.internal_gles_format = GL_RGBA16,
.internal_srgb_format = -1,
.format = GL_RGBA,
.type = GL_UNSIGNED_SHORT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16G16B16A16_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_ABGR16161616,
#endif
.to_float = r16g16b16a16_to_float,
.from_float = r16g16b16a16_from_float,
},
[GDK_MEMORY_R16G16B16_FLOAT] = {
.name = "RGBA16f",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_R16G16B16_FLOAT,
.straight = GDK_MEMORY_R16G16B16_FLOAT,
.bytes_per_pixel = 6,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_FLOAT16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGB16F,
.internal_gles_format = GL_RGB16F,
.internal_srgb_format = -1,
.format = GL_RGB,
.type = GL_HALF_FLOAT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16G16B16_SFLOAT,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = r16g16b16_float_to_float,
.from_float = r16g16b16_float_from_float,
},
[GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED] = {
.name = "RGBA16f(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
.straight = GDK_MEMORY_R16G16B16A16_FLOAT,
.bytes_per_pixel = 8,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_FLOAT16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA16F,
.internal_gles_format = GL_RGBA16F,
.internal_srgb_format = -1,
.format = GL_RGBA,
.type = GL_HALF_FLOAT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16G16B16A16_SFLOAT,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_ABGR16161616F,
#endif
.to_float = r16g16b16a16_float_to_float,
.from_float = r16g16b16a16_float_from_float,
},
[GDK_MEMORY_R16G16B16A16_FLOAT] = {
.name = "RGBA16f",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
.straight = GDK_MEMORY_R16G16B16A16_FLOAT,
.bytes_per_pixel = 8,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_FLOAT16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R32G32B32A32_FLOAT,
GDK_MEMORY_R8G8B8A8,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA16F,
.internal_gles_format = GL_RGBA16F,
.internal_srgb_format = -1,
.format = GL_RGBA,
.type = GL_HALF_FLOAT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16G16B16A16_SFLOAT,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_ABGR16161616F,
#endif
.to_float = r16g16b16a16_float_to_float,
.from_float = r16g16b16a16_float_from_float,
},
[GDK_MEMORY_R32G32B32_FLOAT] = {
.name = "RGB32f",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_R32G32B32_FLOAT,
.straight = GDK_MEMORY_R32G32B32_FLOAT,
12,
.alignment = G_ALIGNOF (float),
.depth = GDK_MEMORY_FLOAT32,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGB32F,
.internal_gles_format = GL_RGB32F,
.internal_srgb_format = -1,
.format = GL_RGB,
.type = GL_FLOAT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R32G32B32_SFLOAT,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = r32g32b32_float_to_float,
.from_float = r32g32b32_float_from_float,
},
[GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED] = {
.name = "RGBA32f(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
.straight = GDK_MEMORY_R32G32B32A32_FLOAT,
16,
.alignment = G_ALIGNOF (float),
.depth = GDK_MEMORY_FLOAT32,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA32F,
.internal_gles_format = GL_RGBA32F,
.internal_srgb_format = -1,
.format = GL_RGBA,
.type = GL_FLOAT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R32G32B32A32_SFLOAT,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = r32g32b32a32_float_to_float,
.from_float = r32g32b32a32_float_from_float,
},
[GDK_MEMORY_R32G32B32A32_FLOAT] = {
.name = "RGBA32f",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
.straight = GDK_MEMORY_R32G32B32A32_FLOAT,
16,
.alignment = G_ALIGNOF (float),
.depth = GDK_MEMORY_FLOAT32,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16_FLOAT,
GDK_MEMORY_R8G8B8A8,
-1,
},
.gl = {
.internal_gl_format = GL_RGBA32F,
.internal_gles_format = GL_RGBA32F,
.internal_srgb_format = -1,
.format = GL_RGBA,
.type = GL_FLOAT,
.swizzle = { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R32G32B32A32_SFLOAT,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = r32g32b32a32_float_to_float,
.from_float = r32g32b32a32_float_from_float,
},
[GDK_MEMORY_G8A8_PREMULTIPLIED] = {
.name = "GA8(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_G8A8_PREMULTIPLIED,
.straight = GDK_MEMORY_G8A8,
.bytes_per_pixel = 2,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RG8,
.internal_gles_format = GL_RG8,
.internal_srgb_format = -1,
.format = GL_RG,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_GREEN },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R8G8_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = g8a8_premultiplied_to_float,
.from_float = g8a8_premultiplied_from_float,
},
[GDK_MEMORY_G8A8] = {
.name = "GA8",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_G8A8_PREMULTIPLIED,
.straight = GDK_MEMORY_G8A8,
.bytes_per_pixel = 2,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8,
-1,
},
.gl = {
.internal_gl_format = GL_RG8,
.internal_gles_format = GL_RG8,
.internal_srgb_format = -1,
.format = GL_RG,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_GREEN },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R8G8_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = g8a8_to_float,
.from_float = g8a8_from_float,
},
[GDK_MEMORY_G8] = {
.name = "G8",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_G8,
.straight = GDK_MEMORY_G8,
.bytes_per_pixel = 1,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_R8,
.internal_gles_format = GL_R8,
.internal_srgb_format = -1,
.format = GL_RED,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_ONE },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R8_UNORM,
.vk_srgb_format = VK_FORMAT_R8_SRGB,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_R8,
#endif
.to_float = g8_to_float,
.from_float = g8_from_float,
},
[GDK_MEMORY_G16A16_PREMULTIPLIED] = {
.name = "GA16(p)",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_G16A16_PREMULTIPLIED,
.straight = GDK_MEMORY_G16A16,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_U16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16_PREMULTIPLIED,
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_RG16,
.internal_gles_format = GL_RG16,
.internal_srgb_format = -1,
.format = GL_RG,
.type = GL_UNSIGNED_SHORT,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_GREEN },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16G16_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = g16a16_premultiplied_to_float,
.from_float = g16a16_premultiplied_from_float,
},
[GDK_MEMORY_G16A16] = {
.name = "GA16",
.alpha = GDK_MEMORY_ALPHA_STRAIGHT,
.premultiplied = GDK_MEMORY_G16A16_PREMULTIPLIED,
.straight = GDK_MEMORY_G16A16,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_U16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16,
GDK_MEMORY_R32G32B32A32_FLOAT,
GDK_MEMORY_R16G16B16A16_FLOAT,
GDK_MEMORY_R8G8B8A8,
-1,
},
.gl = {
.internal_gl_format = GL_RG16,
.internal_gles_format = GL_RG16,
.internal_srgb_format = -1,
.format = GL_RG,
.type = GL_UNSIGNED_SHORT,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_GREEN },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16G16_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = g16a16_to_float,
.from_float = g16a16_from_float,
},
[GDK_MEMORY_G16] = {
.name = "G16",
.alpha = GDK_MEMORY_ALPHA_OPAQUE,
.premultiplied = GDK_MEMORY_G16,
.straight = GDK_MEMORY_G16,
.bytes_per_pixel = 2,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_U16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16_PREMULTIPLIED,
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_R16,
.internal_gles_format = GL_R16,
.internal_srgb_format = -1,
.format = GL_RED,
.type = GL_UNSIGNED_SHORT,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_ONE },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = DRM_FORMAT_R16,
#endif
.to_float = g16_to_float,
.from_float = g16_from_float,
},
[GDK_MEMORY_A8] = {
.name = "A8",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_A8,
.straight = GDK_MEMORY_A8,
.bytes_per_pixel = 1,
.alignment = G_ALIGNOF (guchar),
.depth = GDK_MEMORY_U8,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_R8,
.internal_gles_format = GL_R8,
.internal_srgb_format = -1,
.format = GL_RED,
.type = GL_UNSIGNED_BYTE,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_RED },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R8_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = a8_to_float,
.from_float = a8_from_float,
},
[GDK_MEMORY_A16] = {
.name = "A16",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_A16,
.straight = GDK_MEMORY_A16,
.bytes_per_pixel = 2,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_U16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16_PREMULTIPLIED,
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_R16,
.internal_gles_format = GL_R16,
.internal_srgb_format = -1,
.format = GL_RED,
.type = GL_UNSIGNED_SHORT,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_RED },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16_UNORM,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = a16_to_float,
.from_float = a16_from_float,
},
[GDK_MEMORY_A16_FLOAT] = {
.name = "A16f",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_A16_FLOAT,
.straight = GDK_MEMORY_A16_FLOAT,
.bytes_per_pixel = 2,
.alignment = G_ALIGNOF (guint16),
.depth = GDK_MEMORY_FLOAT16,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_R16F,
.internal_gles_format = GL_R16F,
.internal_srgb_format = -1,
.format = GL_RED,
.type = GL_HALF_FLOAT,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_RED },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R16_SFLOAT,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = a16_float_to_float,
.from_float = a16_float_from_float,
},
[GDK_MEMORY_A32_FLOAT] = {
.name = "A32f",
.alpha = GDK_MEMORY_ALPHA_PREMULTIPLIED,
.premultiplied = GDK_MEMORY_A32_FLOAT,
.straight = GDK_MEMORY_A32_FLOAT,
.bytes_per_pixel = 4,
.alignment = G_ALIGNOF (float),
.depth = GDK_MEMORY_FLOAT32,
.fallbacks = (GdkMemoryFormat[]) {
GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-1,
},
.gl = {
.internal_gl_format = GL_R32F,
.internal_gles_format = GL_R32F,
.internal_srgb_format = -1,
.format = GL_RED,
.type = GL_FLOAT,
.swizzle = { GL_RED, GL_RED, GL_RED, GL_RED },
.rgba_format = -1,
},
#ifdef GDK_RENDERING_VULKAN
.vk_format = VK_FORMAT_R32_SFLOAT,
.vk_srgb_format = VK_FORMAT_UNDEFINED,
#endif
#ifdef HAVE_DMABUF
.dmabuf_fourcc = 0,
#endif
.to_float = a32_float_to_float,
.from_float = a32_float_from_float,
}
};
/* if this fails, somebody forgot to add formats above */
G_STATIC_ASSERT (G_N_ELEMENTS (memory_formats) == GDK_MEMORY_N_FORMATS);
gsize
gdk_memory_format_bytes_per_pixel (GdkMemoryFormat format)
{
return memory_formats[format].bytes_per_pixel;
}
GdkMemoryAlpha
gdk_memory_format_alpha (GdkMemoryFormat format)
{
return memory_formats[format].alpha;
}
GdkMemoryFormat
gdk_memory_format_get_premultiplied (GdkMemoryFormat format)
{
return memory_formats[format].premultiplied;
}
GdkMemoryFormat
gdk_memory_format_get_straight (GdkMemoryFormat format)
{
return memory_formats[format].straight;
}
gsize
gdk_memory_format_alignment (GdkMemoryFormat format)
{
return memory_formats[format].alignment;
}
/*
* gdk_memory_format_get_fallbacks:
* @format: a format
*
* Gets a list of fallback formats to use for @format.
*
* These formats are RGBA formats that ideally have a higher depth
* than the given format. They will always include a guaranteed
* supported format though, even if it is of lower quality (unless
* @format is already guaranteed supported).
*
* Fallbacks will use the same alpha format, ie a premultiplied
* format will never fall back to a straight alpha format and
* vice versa. Either may fall back to an opaque format. Opaque
* formats will fall back to premultiplied formats only.
*
* Use gdk_memory_format_get_premultiplied() and
* gdk_memory_format_get_straight() to transition between
* premultiplied and straight alpha if you need to.
*
* Use gdk_memory_format_gl_rgba_format() to get an equivalent RGBA
* format and swizzle.
*
* The expected order of operation when looking for supported formats
* is the following:
*
* 1. Try the format itself
* 2. If swizzling is supported, try the RGBA format with swizzling
* 3. If swizzling is not supported, try the RGBA without swizzling,
* and with CPU conversion
* 4. Try fallback formats
*
* Returns: A list of fallbacks, terminated with -1
**/
const GdkMemoryFormat *
gdk_memory_format_get_fallbacks (GdkMemoryFormat format)
{
return memory_formats[format].fallbacks;
}
gsize
gdk_memory_format_min_buffer_size (GdkMemoryFormat format,
gsize stride,
gsize width,
gsize height)
{
return stride * (height - 1) + width * gdk_memory_format_bytes_per_pixel (format);
}
/*
* gdk_memory_format_get_depth:
* @format: a memory format
* @srgb: whether an SRGB depth should be returned.
*
* Gets the depth of the individual channels of the format.
* See gsk_render_node_prefers_high_depth() for more
* information on this.
*
* Usually renderers want to use higher depth for render
* targets to match these formats.
*
* Returns: The depth of this format
**/
GdkMemoryDepth
gdk_memory_format_get_depth (GdkMemoryFormat format,
gboolean srgb)
{
GdkMemoryDepth depth;
depth = memory_formats[format].depth;
if (depth == GDK_MEMORY_U8 && srgb)
depth = GDK_MEMORY_U8_SRGB;
return depth;
}
const char *
gdk_memory_depth_get_name (GdkMemoryDepth depth)
{
const char *names[] = { "none", "u8", "u8-srgb", "u16", "f16", "f32" };
return names[depth];
}
/*
* gdk_memory_depth_merge:
* @depth1: the first depth
* @depth2: the second depth
*
* Returns a depth that can accommodate both given depths
* without any loss of precision.
*
* Returns: The merged depth
**/
GdkMemoryDepth
gdk_memory_depth_merge (GdkMemoryDepth depth1,
GdkMemoryDepth depth2)
{
static const GdkMemoryDepth merged_depths[GDK_N_DEPTHS][GDK_N_DEPTHS] = {
/* NONE U8 U8_SRGB U16 FLOAT16 FLOAT32 */
[GDK_MEMORY_NONE] = { GDK_MEMORY_NONE, GDK_MEMORY_U8, GDK_MEMORY_U8_SRGB, GDK_MEMORY_U16, GDK_MEMORY_FLOAT16, GDK_MEMORY_FLOAT32 },
[GDK_MEMORY_U8] = { GDK_MEMORY_U8, GDK_MEMORY_U8, GDK_MEMORY_FLOAT16, GDK_MEMORY_U16, GDK_MEMORY_FLOAT16, GDK_MEMORY_FLOAT32 },
[GDK_MEMORY_U8_SRGB] = { GDK_MEMORY_U8_SRGB, GDK_MEMORY_FLOAT16, GDK_MEMORY_U8_SRGB, GDK_MEMORY_FLOAT32, GDK_MEMORY_FLOAT16, GDK_MEMORY_FLOAT32 },
[GDK_MEMORY_U16] = { GDK_MEMORY_U16, GDK_MEMORY_U16, GDK_MEMORY_FLOAT32, GDK_MEMORY_U16, GDK_MEMORY_FLOAT32, GDK_MEMORY_FLOAT32 },
[GDK_MEMORY_FLOAT16] = { GDK_MEMORY_FLOAT16, GDK_MEMORY_FLOAT16, GDK_MEMORY_FLOAT16, GDK_MEMORY_FLOAT32, GDK_MEMORY_FLOAT16, GDK_MEMORY_FLOAT32 },
[GDK_MEMORY_FLOAT32] = { GDK_MEMORY_FLOAT32, GDK_MEMORY_FLOAT32, GDK_MEMORY_FLOAT32, GDK_MEMORY_FLOAT32, GDK_MEMORY_FLOAT32, GDK_MEMORY_FLOAT32 },
};
g_assert (depth1 < GDK_N_DEPTHS);
g_assert (depth2 < GDK_N_DEPTHS);
return merged_depths[depth1][depth2];
}
/*
* gdk_memory_depth_get_format:
* @depth: the depth
*
* Gets the preferred format to use for rendering at the
* given depth
*
* Returns: the format
**/
GdkMemoryFormat
gdk_memory_depth_get_format (GdkMemoryDepth depth)
{
switch (depth)
{
case GDK_MEMORY_NONE:
case GDK_MEMORY_U8:
case GDK_MEMORY_U8_SRGB:
return GDK_MEMORY_R8G8B8A8_PREMULTIPLIED;
case GDK_MEMORY_U16:
return GDK_MEMORY_R16G16B16A16_PREMULTIPLIED;
case GDK_MEMORY_FLOAT16:
return GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED;
case GDK_MEMORY_FLOAT32:
return GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED;
case GDK_N_DEPTHS:
default:
g_return_val_if_reached (GDK_MEMORY_R8G8B8A8_PREMULTIPLIED);
}
}
/*
* gdk_memory_depth_get_alpha_format:
* @depth: the depth
*
* Gets the preferred format to use for rendering masks and other
* alpha-only content.
*
* Returns: the format
**/
GdkMemoryFormat
gdk_memory_depth_get_alpha_format (GdkMemoryDepth depth)
{
switch (depth)
{
case GDK_MEMORY_NONE:
case GDK_MEMORY_U8:
case GDK_MEMORY_U8_SRGB:
return GDK_MEMORY_A8;
case GDK_MEMORY_U16:
return GDK_MEMORY_A16;
case GDK_MEMORY_FLOAT16:
return GDK_MEMORY_A16_FLOAT;
case GDK_MEMORY_FLOAT32:
return GDK_MEMORY_A32_FLOAT;
case GDK_N_DEPTHS:
default:
g_return_val_if_reached (GDK_MEMORY_A8);
}
}
gboolean
gdk_memory_depth_is_srgb (GdkMemoryDepth depth)
{
/* Putting a switch here instead of a simple check
* so the compiler makes us look here
* when adding new formats */
switch (depth)
{
case GDK_MEMORY_U8_SRGB:
return TRUE;
case GDK_MEMORY_NONE:
case GDK_MEMORY_U8:
case GDK_MEMORY_U16:
case GDK_MEMORY_FLOAT16:
case GDK_MEMORY_FLOAT32:
return FALSE;
case GDK_N_DEPTHS:
default:
g_return_val_if_reached (GDK_MEMORY_A8);
}
}
void
gdk_memory_format_gl_format (GdkMemoryFormat format,
gboolean gles,
GLint *out_internal_format,
GLint *out_internal_srgb_format,
GLenum *out_format,
GLenum *out_type,
GLint out_swizzle[4])
{
if (gles)
*out_internal_format = memory_formats[format].gl.internal_gles_format;
else
*out_internal_format = memory_formats[format].gl.internal_gl_format;
*out_internal_srgb_format = memory_formats[format].gl.internal_srgb_format;
*out_format = memory_formats[format].gl.format;
*out_type = memory_formats[format].gl.type;
memcpy (out_swizzle, memory_formats[format].gl.swizzle, sizeof(GLint) * 4);
}
/*
* gdk_memory_format_gl_rgba_format:
* @format: The format to query
* @gles: TRUE for GLES, FALSE for GL
* @out_actual_format: The actual RGBA format
* @out_internal_format: the GL internal format
* @out_internal_srgb_format: the GL internal format to use for automatic
* sRGB<=>linear conversion
* @out_format: the GL format
* @out_type: the GL type
* @out_swizzle: The swizzle to use
*
* Maps the given format to a GL format that uses RGBA and uses swizzling,
* as opposed to trying to find a GL format that is swapped in the right
* direction.
*
* This format is guaranteed equivalent in memory layout to the original
* format, so uploading/downloading code can treat them the same.
*
* Returns: %TRUE if the format exists and is different from the given format.
**/
gboolean
gdk_memory_format_gl_rgba_format (GdkMemoryFormat format,
gboolean gles,
GdkMemoryFormat *out_actual_format,
GLint *out_internal_format,
GLint *out_internal_srgb_format,
GLenum *out_format,
GLenum *out_type,
GLint out_swizzle[4])
{
GdkMemoryFormat actual = memory_formats[format].gl.rgba_format;
if (actual == -1)
return FALSE;
*out_actual_format = actual;
if (gles)
*out_internal_format = memory_formats[actual].gl.internal_gles_format;
else
*out_internal_format = memory_formats[actual].gl.internal_gl_format;
*out_internal_srgb_format = memory_formats[actual].gl.internal_srgb_format;
*out_format = memory_formats[actual].gl.format;
*out_type = memory_formats[actual].gl.type;
memcpy (out_swizzle, memory_formats[format].gl.rgba_swizzle, sizeof(GLint) * 4);
return TRUE;
}
#ifdef GDK_RENDERING_VULKAN
static VkComponentSwizzle
vk_swizzle_from_gl_swizzle_one (GLint swizzle)
{
switch (swizzle)
{
case GL_RED:
return VK_COMPONENT_SWIZZLE_R;
case GL_GREEN:
return VK_COMPONENT_SWIZZLE_G;
case GL_BLUE:
return VK_COMPONENT_SWIZZLE_B;
case GL_ALPHA:
return VK_COMPONENT_SWIZZLE_A;
case GL_ZERO:
return VK_COMPONENT_SWIZZLE_ZERO;
case GL_ONE:
return VK_COMPONENT_SWIZZLE_ONE;
default:
g_assert_not_reached ();
return VK_COMPONENT_SWIZZLE_IDENTITY;
}
}
static void
vk_swizzle_from_gl_swizzle (VkComponentMapping *vk_swizzle,
const GLint gl_swizzle[4])
{
vk_swizzle->r = vk_swizzle_from_gl_swizzle_one (gl_swizzle[0]);
vk_swizzle->g = vk_swizzle_from_gl_swizzle_one (gl_swizzle[1]);
vk_swizzle->b = vk_swizzle_from_gl_swizzle_one (gl_swizzle[2]);
vk_swizzle->a = vk_swizzle_from_gl_swizzle_one (gl_swizzle[3]);
}
/* Vulkan version of gdk_memory_format_gl_format()
* Returns VK_FORMAT_UNDEFINED on failure */
VkFormat
gdk_memory_format_vk_format (GdkMemoryFormat format,
VkComponentMapping *out_swizzle)
{
if (out_swizzle)
vk_swizzle_from_gl_swizzle (out_swizzle, memory_formats[format].gl.swizzle);
return memory_formats[format].vk_format;
}
/* Gets the matching SRGB version of a VkFormat
* Returns VK_FORMAT_UNDEFINED if none exists */
VkFormat
gdk_memory_format_vk_srgb_format (GdkMemoryFormat format)
{
return memory_formats[format].vk_srgb_format;
}
/* Vulkan version of gdk_memory_format_gl_rgba_format()
* Returns VK_FORMAT_UNDEFINED on failure */
VkFormat
gdk_memory_format_vk_rgba_format (GdkMemoryFormat format,
GdkMemoryFormat *out_rgba_format,
VkComponentMapping *out_swizzle)
{
GdkMemoryFormat actual = memory_formats[format].gl.rgba_format;
if (actual == -1)
return VK_FORMAT_UNDEFINED;
if (out_rgba_format)
*out_rgba_format = actual;
if (out_swizzle)
vk_swizzle_from_gl_swizzle (out_swizzle, memory_formats[format].gl.rgba_swizzle);
return memory_formats[actual].vk_format;
}
#endif
/*
* gdk_memory_format_get_dmabuf_fourcc:
* @format: The memory format
*
* Gets the dmabuf fourcc for a given memory format.
*
* The format is an exact match, so data can be copied between the
* dmabuf and data of the format. This is different from the
* memoryformat returned by a GdkDmabufTexture, which is just the
* closest match.
*
* Not all formats have a corresponding dmabuf format.
* In those cases 0 will be returned.
*
* If dmabuf support is not compiled in, always returns 0.
*
* Returns: the fourcc or 0
**/
guint32
gdk_memory_format_get_dmabuf_fourcc (GdkMemoryFormat format)
{
#ifdef HAVE_DMABUF
return memory_formats[format].dmabuf_fourcc;
#else
return 0;
#endif
}
const char *
gdk_memory_format_get_name (GdkMemoryFormat format)
{
return memory_formats[format].name;
}
static void
premultiply (float (*rgba)[4],
gsize n)
{
for (gsize i = 0; i < n; i++)
{
rgba[i][0] *= rgba[i][3];
rgba[i][1] *= rgba[i][3];
rgba[i][2] *= rgba[i][3];
}
}
static void
unpremultiply (float (*rgba)[4],
gsize n)
{
for (gsize i = 0; i < n; i++)
{
if (rgba[i][3] > 1/255.0)
{
rgba[i][0] /= rgba[i][3];
rgba[i][1] /= rgba[i][3];
rgba[i][2] /= rgba[i][3];
}
}
}
void
gdk_memory_convert (guchar *dest_data,
gsize dest_stride,
GdkMemoryFormat dest_format,
GdkColorState *dest_cs,
const guchar *src_data,
gsize src_stride,
GdkMemoryFormat src_format,
GdkColorState *src_cs,
gsize width,
gsize height)
{
const GdkMemoryFormatDescription *dest_desc = &memory_formats[dest_format];
const GdkMemoryFormatDescription *src_desc = &memory_formats[src_format];
float (*tmp)[4];
gsize y;
GdkFloatColorConvert convert_func = NULL;
GdkFloatColorConvert convert_func2 = NULL;
void (*func) (guchar *, const guchar *, gsize) = NULL;
gboolean needs_premultiply, needs_unpremultiply;
g_assert (dest_format < GDK_MEMORY_N_FORMATS);
g_assert (src_format < GDK_MEMORY_N_FORMATS);
/* We don't allow overlap here. If you want to do in-place color state conversions,
* use gdk_memory_convert_color_state.
*/
g_assert (dest_data + gdk_memory_format_min_buffer_size (dest_format, dest_stride, width, height) <= src_data ||
src_data + gdk_memory_format_min_buffer_size (src_format, src_stride, width, height) <= dest_data);
if (src_format == dest_format && gdk_color_state_equal (dest_cs, src_cs))
{
gsize bytes_per_row = src_desc->bytes_per_pixel * width;
if (bytes_per_row == src_stride && bytes_per_row == dest_stride)
{
memcpy (dest_data, src_data, bytes_per_row * height);
}
else
{
for (y = 0; y < height; y++)
{
memcpy (dest_data, src_data, bytes_per_row);
src_data += src_stride;
dest_data += dest_stride;
}
}
return;
}
if (!gdk_color_state_equal (dest_cs, src_cs))
{
convert_func = gdk_color_state_get_convert_to (src_cs, dest_cs);
if (!convert_func)
convert_func2 = gdk_color_state_get_convert_from (dest_cs, src_cs);
if (!convert_func && !convert_func2)
{
GdkColorState *connection = GDK_COLOR_STATE_REC2100_LINEAR;
convert_func = gdk_color_state_get_convert_to (src_cs, connection);
convert_func2 = gdk_color_state_get_convert_from (dest_cs, connection);
}
}
else if (src_format == GDK_MEMORY_R8G8B8A8 && dest_format == GDK_MEMORY_R8G8B8A8_PREMULTIPLIED)
func = r8g8b8a8_to_r8g8b8a8_premultiplied;
else if (src_format == GDK_MEMORY_B8G8R8A8 && dest_format == GDK_MEMORY_R8G8B8A8_PREMULTIPLIED)
func = r8g8b8a8_to_b8g8r8a8_premultiplied;
else if (src_format == GDK_MEMORY_R8G8B8A8 && dest_format == GDK_MEMORY_B8G8R8A8_PREMULTIPLIED)
func = r8g8b8a8_to_b8g8r8a8_premultiplied;
else if (src_format == GDK_MEMORY_B8G8R8A8 && dest_format == GDK_MEMORY_B8G8R8A8_PREMULTIPLIED)
func = r8g8b8a8_to_r8g8b8a8_premultiplied;
else if (src_format == GDK_MEMORY_R8G8B8A8 && dest_format == GDK_MEMORY_A8R8G8B8_PREMULTIPLIED)
func = r8g8b8a8_to_a8r8g8b8_premultiplied;
else if (src_format == GDK_MEMORY_B8G8R8A8 && dest_format == GDK_MEMORY_A8R8G8B8_PREMULTIPLIED)
func = r8g8b8a8_to_a8b8g8r8_premultiplied;
else if (src_format == GDK_MEMORY_R8G8B8 && dest_format == GDK_MEMORY_R8G8B8A8_PREMULTIPLIED)
func = r8g8b8_to_r8g8b8a8;
else if (src_format == GDK_MEMORY_B8G8R8 && dest_format == GDK_MEMORY_R8G8B8A8_PREMULTIPLIED)
func = r8g8b8_to_b8g8r8a8;
else if (src_format == GDK_MEMORY_R8G8B8 && dest_format == GDK_MEMORY_B8G8R8A8_PREMULTIPLIED)
func = r8g8b8_to_b8g8r8a8;
else if (src_format == GDK_MEMORY_B8G8R8 && dest_format == GDK_MEMORY_B8G8R8A8_PREMULTIPLIED)
func = r8g8b8_to_r8g8b8a8;
else if (src_format == GDK_MEMORY_R8G8B8 && dest_format == GDK_MEMORY_A8R8G8B8_PREMULTIPLIED)
func = r8g8b8_to_a8r8g8b8;
else if (src_format == GDK_MEMORY_B8G8R8 && dest_format == GDK_MEMORY_A8R8G8B8_PREMULTIPLIED)
func = r8g8b8_to_a8b8g8r8;
else if (src_format == GDK_MEMORY_R8G8B8 && dest_format == GDK_MEMORY_R8G8B8A8)
func = r8g8b8_to_r8g8b8a8;
else if (src_format == GDK_MEMORY_B8G8R8 && dest_format == GDK_MEMORY_R8G8B8A8)
func = r8g8b8_to_b8g8r8a8;
else if (src_format == GDK_MEMORY_R8G8B8 && dest_format == GDK_MEMORY_B8G8R8A8)
func = r8g8b8_to_b8g8r8a8;
else if (src_format == GDK_MEMORY_B8G8R8 && dest_format == GDK_MEMORY_B8G8R8A8)
func = r8g8b8_to_r8g8b8a8;
else if (src_format == GDK_MEMORY_R8G8B8 && dest_format == GDK_MEMORY_A8R8G8B8)
func = r8g8b8_to_a8r8g8b8;
else if (src_format == GDK_MEMORY_B8G8R8 && dest_format == GDK_MEMORY_A8R8G8B8)
func = r8g8b8_to_a8b8g8r8;
if (func != NULL)
{
for (y = 0; y < height; y++)
{
func (dest_data, src_data, width);
src_data += src_stride;
dest_data += dest_stride;
}
return;
}
tmp = g_malloc (sizeof (*tmp) * width);
if (convert_func)
{
needs_unpremultiply = src_desc->alpha == GDK_MEMORY_ALPHA_PREMULTIPLIED;
needs_premultiply = src_desc->alpha != GDK_MEMORY_ALPHA_OPAQUE && dest_desc->alpha != GDK_MEMORY_ALPHA_STRAIGHT;
}
else
{
needs_unpremultiply = src_desc->alpha == GDK_MEMORY_ALPHA_PREMULTIPLIED && dest_desc->alpha == GDK_MEMORY_ALPHA_STRAIGHT;
needs_premultiply = src_desc->alpha == GDK_MEMORY_ALPHA_STRAIGHT && dest_desc->alpha != GDK_MEMORY_ALPHA_STRAIGHT;
}
for (y = 0; y < height; y++)
{
src_desc->to_float (tmp, src_data, width);
if (needs_unpremultiply)
unpremultiply (tmp, width);
if (convert_func)
convert_func (src_cs, tmp, width);
if (convert_func2)
convert_func2 (dest_cs, tmp, width);
if (needs_premultiply)
premultiply (tmp, width);
dest_desc->from_float (dest_data, tmp, width);
src_data += src_stride;
dest_data += dest_stride;
}
g_free (tmp);
}
static const guchar srgb_lookup[] = {
0, 12, 21, 28, 33, 38, 42, 46, 49, 52, 55, 58, 61, 63, 66, 68,
70, 73, 75, 77, 79, 81, 82, 84, 86, 88, 89, 91, 93, 94, 96, 97,
99, 100, 102, 103, 104, 106, 107, 109, 110, 111, 112, 114, 115, 116, 117, 118,
120, 121, 122, 123, 124, 125, 126, 127, 129, 130, 131, 132, 133, 134, 135, 136,
137, 138, 139, 140, 141, 142, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151,
151, 152, 153, 154, 155, 156, 157, 157, 158, 159, 160, 161, 161, 162, 163, 164,
165, 165, 166, 167, 168, 168, 169, 170, 171, 171, 172, 173, 174, 174, 175, 176,
176, 177, 178, 179, 179, 180, 181, 181, 182, 183, 183, 184, 185, 185, 186, 187,
187, 188, 189, 189, 190, 191, 191, 192, 193, 193, 194, 194, 195, 196, 196, 197,
197, 198, 199, 199, 200, 201, 201, 202, 202, 203, 204, 204, 205, 205, 206, 206,
207, 208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214, 214, 215, 215,
216, 217, 217, 218, 218, 219, 219, 220, 220, 221, 221, 222, 222, 223, 223, 224,
224, 225, 226, 226, 227, 227, 228, 228, 229, 229, 230, 230, 231, 231, 232, 232,
233, 233, 234, 234, 235, 235, 236, 236, 237, 237, 237, 238, 238, 239, 239, 240,
240, 241, 241, 242, 242, 243, 243, 244, 244, 245, 245, 245, 246, 246, 247, 247,
248, 248, 249, 249, 250, 250, 251, 251, 251, 252, 252, 253, 253, 254, 254, 255
};
static const guchar srgb_inverse_lookup[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1,
1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3,
3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7,
7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12,
13, 13, 13, 14, 14, 15, 15, 16, 16, 16, 17, 17, 18, 18, 19, 19,
20, 20, 21, 22, 22, 23, 23, 24, 24, 25, 26, 26, 27, 27, 28, 29,
29, 30, 31, 31, 32, 33, 33, 34, 35, 36, 36, 37, 38, 38, 39, 40,
41, 42, 42, 43, 44, 45, 46, 47, 47, 48, 49, 50, 51, 52, 53, 54,
55, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 70,
71, 72, 73, 74, 75, 76, 77, 78, 80, 81, 82, 83, 84, 85, 87, 88,
89, 90, 92, 93, 94, 95, 97, 98, 99, 101, 102, 103, 105, 106, 107, 109,
110, 112, 113, 114, 116, 117, 119, 120, 122, 123, 125, 126, 128, 129, 131, 132,
134, 135, 137, 139, 140, 142, 144, 145, 147, 148, 150, 152, 153, 155, 157, 159,
160, 162, 164, 166, 167, 169, 171, 173, 175, 176, 178, 180, 182, 184, 186, 188,
190, 192, 193, 195, 197, 199, 201, 203, 205, 207, 209, 211, 213, 215, 218, 220,
222, 224, 226, 228, 230, 232, 235, 237, 239, 241, 243, 245, 248, 250, 252, 255
};
static void
convert_srgb_to_srgb_linear (guchar *data,
gsize n)
{
for (gsize i = 0; i < n; i++)
{
guint16 r = data[0];
guint16 g = data[1];
guint16 b = data[2];
guchar a = data[3];
if (a != 0)
{
r = (r * 255 + a / 2) / a;
g = (g * 255 + a / 2) / a;
b = (b * 255 + a / 2) / a;
r = srgb_inverse_lookup[r];
g = srgb_inverse_lookup[g];
b = srgb_inverse_lookup[b];
r = r * a + 127;
g = g * a + 127;
b = b * a + 127;
data[0] = (r + (r >> 8) + 1) >> 8;
data[1] = (g + (g >> 8) + 1) >> 8;
data[2] = (b + (b >> 8) + 1) >> 8;
}
data += 4;
}
}
static void
convert_srgb_linear_to_srgb (guchar *data,
gsize n)
{
for (gsize i = 0; i < n; i++)
{
guint16 r = data[0];
guint16 g = data[1];
guint16 b = data[2];
guchar a = data[3];
if (a != 0)
{
r = (r * 255 + a / 2) / a;
g = (g * 255 + a / 2) / a;
b = (b * 255 + a / 2) / a;
r = srgb_lookup[r];
g = srgb_lookup[g];
b = srgb_lookup[b];
r = r * a + 127;
g = g * a + 127;
b = b * a + 127;
data[0] = (r + (r >> 8) + 1) >> 8;
data[1] = (g + (g >> 8) + 1) >> 8;
data[2] = (b + (b >> 8) + 1) >> 8;
}
data += 4;
}
}
static void
convert_srgb_to_srgb_linear_in_place (guchar *data,
gsize stride,
gsize width,
gsize height)
{
if (stride == width * 4)
{
convert_srgb_to_srgb_linear (data, height * width);
}
else
{
for (gsize y = 0; y < height; y++)
{
convert_srgb_to_srgb_linear (data, width);
data += stride;
}
}
}
static void
convert_srgb_linear_to_srgb_in_place (guchar *data,
gsize stride,
gsize width,
gsize height)
{
if (stride == width * 4)
{
convert_srgb_linear_to_srgb (data, height * width);
}
else
{
for (gsize y = 0; y < height; y++)
{
convert_srgb_linear_to_srgb (data, width);
data += stride;
}
}
}
void
gdk_memory_convert_color_state (guchar *data,
gsize stride,
GdkMemoryFormat format,
GdkColorState *src_cs,
GdkColorState *dest_cs,
gsize width,
gsize height)
{
const GdkMemoryFormatDescription *desc = &memory_formats[format];
GdkFloatColorConvert convert_func = NULL;
GdkFloatColorConvert convert_func2 = NULL;
float (*tmp)[4];
if (gdk_color_state_equal (src_cs, dest_cs))
return;
if (format == GDK_MEMORY_B8G8R8A8_PREMULTIPLIED &&
src_cs == GDK_COLOR_STATE_SRGB &&
dest_cs == GDK_COLOR_STATE_SRGB_LINEAR)
{
convert_srgb_to_srgb_linear_in_place (data, stride, width, height);
return;
}
else if (format == GDK_MEMORY_B8G8R8A8_PREMULTIPLIED &&
src_cs == GDK_COLOR_STATE_SRGB_LINEAR &&
dest_cs == GDK_COLOR_STATE_SRGB)
{
convert_srgb_linear_to_srgb_in_place (data, stride, width, height);
return;
}
convert_func = gdk_color_state_get_convert_to (src_cs, dest_cs);
if (!convert_func)
{
convert_func2 = gdk_color_state_get_convert_from (dest_cs, src_cs);
}
if (!convert_func && !convert_func2)
{
GdkColorState *connection = GDK_COLOR_STATE_REC2100_LINEAR;
convert_func = gdk_color_state_get_convert_to (src_cs, connection);
convert_func2 = gdk_color_state_get_convert_from (dest_cs, connection);
}
tmp = g_malloc (sizeof (*tmp) * width);
for (gsize y = 0; y < height; y++)
{
desc->to_float (tmp, data, width);
if (desc->alpha == GDK_MEMORY_ALPHA_PREMULTIPLIED)
unpremultiply (tmp, width);
if (convert_func)
convert_func (src_cs, tmp, width);
if (convert_func2)
convert_func2 (dest_cs, tmp, width);
if (desc->alpha == GDK_MEMORY_ALPHA_PREMULTIPLIED)
premultiply (tmp, width);
desc->from_float (data, tmp, width);
data += stride;
}
g_free (tmp);
}