[gtk/wip/otte/float-textures: 1/7] memorytexture: Add support for HDR formats
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wip/otte/float-textures: 1/7] memorytexture: Add support for HDR formats
- Date: Sun, 12 Sep 2021 03:33:13 +0000 (UTC)
commit 625e11b3beb0a60e9e0c9c6480f44e3e9080352c
Author: Benjamin Otte <otte redhat com>
Date: Sat Sep 11 21:18:56 2021 +0200
memorytexture: Add support for HDR formats
Also sanitize the input bytes so the strides match alignment
requirements of the data types.
gdk/gdkmemorytexture.c | 295 ++++++++++++++++++++++++++++++++++++++++++++++++-
gdk/gdkmemorytexture.h | 20 ++++
2 files changed, 311 insertions(+), 4 deletions(-)
---
diff --git a/gdk/gdkmemorytexture.c b/gdk/gdkmemorytexture.c
index 6d0c861eec..631357bcc8 100644
--- a/gdk/gdkmemorytexture.c
+++ b/gdk/gdkmemorytexture.c
@@ -20,6 +20,7 @@
#include "config.h"
#include "gdkmemorytextureprivate.h"
+#include "gsk/ngl/fp16private.h"
/**
* GdkMemoryTexture:
@@ -49,6 +50,10 @@ 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:
@@ -58,14 +63,59 @@ gdk_memory_format_bytes_per_pixel (GdkMemoryFormat format)
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 gsize
+gdk_memory_format_alignment (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 G_ALIGNOF (guchar);
+
+ case GDK_MEMORY_R16G16B16:
+ case GDK_MEMORY_R16G16B16_FLOAT:
+ return G_ALIGNOF (guint16);
+
+ case GDK_MEMORY_R16G16B16A16_PREMULTIPLIED:
+ case GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED:
+ return G_ALIGNOF (guint16);
+
+ case GDK_MEMORY_R32G32B32_FLOAT:
+ case GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED:
+ return G_ALIGNOF (float);
case GDK_MEMORY_N_FORMATS:
default:
g_assert_not_reached ();
- return 4;
+ return G_ALIGNOF (double);
}
}
@@ -133,6 +183,41 @@ gdk_memory_texture_init (GdkMemoryTexture *self)
{
}
+static GBytes *
+gdk_memory_sanitize (GBytes *bytes,
+ int width,
+ int height,
+ GdkMemoryFormat format,
+ gsize stride,
+ gsize *out_stride)
+{
+ gsize align, size, copy_stride, bpp;
+ const guchar *data;
+ guchar *copy;
+ int y;
+
+ data = g_bytes_get_data (bytes, &size);
+ align = gdk_memory_format_alignment (format);
+
+ if (GPOINTER_TO_SIZE (data) % align == 0 &&
+ stride % align == 0)
+ {
+ *out_stride = stride;
+ return g_bytes_ref (bytes);
+ }
+
+ bpp = gdk_memory_format_bytes_per_pixel (format);
+ copy_stride = bpp * width;
+ /* align to multiples of 4, just to be sure */
+ copy_stride = (copy_stride + 3) & ~3;
+ copy = g_malloc (copy_stride * height);
+ for (y = 0; y < height; y++)
+ memcpy (copy + y * copy_stride, data + y * stride, bpp * width);
+
+ *out_stride = copy_stride;
+ return g_bytes_new_take (copy, copy_stride * height);
+}
+
/**
* gdk_memory_texture_new:
* @width: the width of the texture
@@ -157,13 +242,20 @@ gdk_memory_texture_new (int width,
{
GdkMemoryTexture *self;
+ g_return_val_if_fail (width > 0, NULL);
+ g_return_val_if_fail (height > 0, NULL);
+ g_return_val_if_fail (bytes != NULL, NULL);
+ g_return_val_if_fail (stride >= width * gdk_memory_format_bytes_per_pixel (format), NULL);
+
+ bytes = gdk_memory_sanitize (bytes, width, height, format, stride, &stride);
+
self = g_object_new (GDK_TYPE_MEMORY_TEXTURE,
"width", width,
"height", height,
NULL);
self->format = format;
- self->bytes = g_bytes_ref (bytes);
+ self->bytes = bytes;
self->stride = stride;
return GDK_TEXTURE (self);
@@ -304,6 +396,109 @@ SWIZZLE_PREMULTIPLY (3,0,1,2, 0,1,2,3)
SWIZZLE_PREMULTIPLY (3,0,1,2, 3,0,1,2)
SWIZZLE_PREMULTIPLY (3,0,1,2, 0,3,2,1)
+#define CONVERT_FUNC(name,suffix,R,G,B,A,step) \
+static void \
+convert_ ## name ## _to_ ## suffix (guchar *dest_data, \
+ gsize dest_stride, \
+ const guchar *src_data, \
+ gsize src_stride, \
+ gsize width, \
+ gsize height) \
+{ \
+ gsize x, y; \
+\
+ for (y = 0; y < height; y++) \
+ { \
+ for (x = 0; x < width; x++) \
+ { \
+ guchar conv[4]; \
+ convert_pixel_ ## name (conv, src_data + step * x); \
+ dest_data[4 * x + R] = conv[0]; \
+ dest_data[4 * x + G] = conv[1]; \
+ dest_data[4 * x + B] = conv[2]; \
+ dest_data[4 * x + A] = conv[3]; \
+ } \
+\
+ dest_data += dest_stride; \
+ src_data += src_stride; \
+ } \
+}
+
+#define CONVERT_FUNCS(name,step) \
+CONVERT_FUNC(name, download_le, 2, 1, 0, 3, step) \
+CONVERT_FUNC(name, download_be, 1, 2, 3, 0, step) \
+CONVERT_FUNC(name, gles_rgba, 0, 1, 2, 3, step) \
+
+static inline void
+convert_pixel_rgb16 (guchar *dest_data, const guchar *src_data)
+{
+ const guint16 *src = (const guint16 *) src_data;
+ dest_data[0] = (guchar)(src[0] >> 8);
+ dest_data[1] = (guchar)(src[1] >> 8);
+ dest_data[2] = (guchar)(src[2] >> 8);
+ dest_data[3] = 0xFF;
+}
+CONVERT_FUNCS(rgb16, 3 * sizeof (guint16))
+
+static inline void
+convert_pixel_rgba16 (guchar *dest_data, const guchar *src_data)
+{
+ const guint16 *src = (const guint16 *) src_data;
+ dest_data[0] = (guchar)(src[0] >> 8);
+ dest_data[1] = (guchar)(src[1] >> 8);
+ dest_data[2] = (guchar)(src[2] >> 8);
+ dest_data[3] = (guchar)(src[3] >> 8);
+}
+CONVERT_FUNCS(rgba16, 4 * sizeof (guint16))
+
+static inline void
+convert_pixel_rgb16f (guchar *dest_data, const guchar *src_data)
+{
+ float src[4];
+ guint16 tmp[4];
+ memcpy(tmp, src_data, sizeof(guint16) * 3);
+ half_to_float4(tmp, src);
+ dest_data[0] = CLAMP (src[0] * 256.f, 0.f, 255.f);
+ dest_data[1] = CLAMP (src[1] * 256.f, 0.f, 255.f);
+ dest_data[2] = CLAMP (src[2] * 256.f, 0.f, 255.f);
+ dest_data[3] = 0xFF;
+}
+CONVERT_FUNCS(rgb16f, 3 * sizeof (guint16))
+
+static inline void
+convert_pixel_rgba16f (guchar *dest_data, const guchar *src_data)
+{
+ float src[4];
+ half_to_float4((const guint16 *) src_data, src);
+ dest_data[0] = CLAMP (src[0] * 256.f, 0.f, 255.f);
+ dest_data[1] = CLAMP (src[1] * 256.f, 0.f, 255.f);
+ dest_data[2] = CLAMP (src[2] * 256.f, 0.f, 255.f);
+ dest_data[3] = CLAMP (src[3] * 256.f, 0.f, 255.f);
+}
+CONVERT_FUNCS(rgba16f, 4 * sizeof (guint16))
+
+static inline void
+convert_pixel_rgb32f (guchar *dest_data, const guchar *src_data)
+{
+ float *src = (float *) src_data;
+ dest_data[0] = CLAMP (src[0] * 256.f, 0.f, 255.f);
+ dest_data[1] = CLAMP (src[1] * 256.f, 0.f, 255.f);
+ dest_data[2] = CLAMP (src[2] * 256.f, 0.f, 255.f);
+ dest_data[3] = 0xFF;
+}
+CONVERT_FUNCS(rgb32f, 3 * sizeof (float))
+
+static inline void
+convert_pixel_rgba32f (guchar *dest_data, const guchar *src_data)
+{
+ float *src = (float *) src_data;
+ dest_data[0] = CLAMP (src[0] * 256.f, 0.f, 255.f);
+ dest_data[1] = CLAMP (src[1] * 256.f, 0.f, 255.f);
+ dest_data[2] = CLAMP (src[2] * 256.f, 0.f, 255.f);
+ dest_data[3] = CLAMP (src[3] * 256.f, 0.f, 255.f);
+}
+CONVERT_FUNCS(rgba32f, 4 * sizeof (float))
+
typedef void (* ConversionFunc) (guchar *dest_data,
gsize dest_stride,
const guchar *src_data,
@@ -321,7 +516,13 @@ static ConversionFunc converters[GDK_MEMORY_N_FORMATS][GDK_MEMORY_N_CONVERSIONS]
{ convert_swizzle_premultiply_3210_3012, convert_swizzle_premultiply_0123_3012,
convert_swizzle_premultiply_3012_3012 },
{ convert_swizzle_premultiply_3210_0321, convert_swizzle_premultiply_0123_0321,
convert_swizzle_premultiply_3012_0321 },
{ convert_swizzle_opaque_3210, convert_swizzle_opaque_0123, convert_swizzle_opaque_3012 },
- { convert_swizzle_opaque_3012, convert_swizzle_opaque_0321, convert_swizzle_opaque_3210 }
+ { convert_swizzle_opaque_3012, convert_swizzle_opaque_0321, convert_swizzle_opaque_3210 },
+ { convert_rgb16_to_download_le, convert_rgb16_to_download_be, convert_rgb16_to_gles_rgba },
+ { convert_rgba16_to_download_le, convert_rgba16_to_download_be, convert_rgba16_to_gles_rgba },
+ { convert_rgb16f_to_download_le, convert_rgb16f_to_download_be, convert_rgb16f_to_gles_rgba },
+ { convert_rgba16f_to_download_le, convert_rgba16f_to_download_be, convert_rgba16f_to_gles_rgba },
+ { convert_rgb32f_to_download_le, convert_rgb32f_to_download_be, convert_rgb32f_to_gles_rgba },
+ { convert_rgba32f_to_download_le, convert_rgba32f_to_download_be, convert_rgba32f_to_gles_rgba }
};
void
@@ -372,6 +573,74 @@ gdk_memory_convert (guchar *dest_data,
} \
}G_STMT_END
+#define CONVERT_FLOAT_PIXEL(func,step) G_STMT_START{\
+ for (y = 0; y < height; y++) \
+ { \
+ for (x = 0; x < width; x++) \
+ { \
+ func (dest_data + 4 * x, src_data + step * x); \
+ } \
+\
+ dest_data += dest_stride; \
+ src_data += src_stride; \
+ } \
+}G_STMT_END
+
+static inline void
+convert_rgb16_to_float (float *dest, const guchar *src_data)
+{
+ const guint16 *src = (const guint16 *) src_data;
+ dest[0] = src[0] / 65535.f;
+ dest[1] = src[1] / 65535.f;
+ dest[2] = src[2] / 65535.f;
+ dest[3] = 1.0;
+}
+
+static inline void
+convert_rgba16_to_float (float *dest, const guchar *src_data)
+{
+ const guint16 *src = (const guint16 *) src_data;
+ dest[0] = src[0] / 65535.f;
+ dest[1] = src[1] / 65535.f;
+ dest[2] = src[2] / 65535.f;
+ dest[3] = 1.0;
+}
+
+static inline void
+convert_rgb16f_to_float (float *dest, const guchar *src_data)
+{
+ guint16 tmp[4];
+ memcpy(tmp, src_data, sizeof(guint16) * 3);
+ tmp[3] = FP16_ONE;
+ half_to_float4 (tmp, dest);
+}
+
+static inline void
+convert_rgba16f_to_float (float *dest, const guchar *src_data)
+{
+ half_to_float4 ((const guint16 *) src_data, dest);
+}
+
+static inline void
+convert_rgb32f_to_float (float *dest, const guchar *src_data)
+{
+ const float *src = (const float *) src_data;
+ dest[0] = src[0];
+ dest[1] = src[1];
+ dest[2] = src[2];
+ dest[3] = 1.0;
+}
+
+static inline void
+convert_rgba32f_to_float (float *dest, const guchar *src_data)
+{
+ const float *src = (const float *) src_data;
+ dest[0] = src[0];
+ dest[1] = src[1];
+ dest[2] = src[2];
+ dest[3] = src[3];
+}
+
void
gdk_memory_convert_to_float (float *dest_data,
gsize dest_stride,
@@ -412,6 +681,24 @@ gdk_memory_convert_to_float (float *dest_data,
case GDK_MEMORY_B8G8R8:
CONVERT_FLOAT (2, 1, 0, -1, FALSE);
break;
+ case GDK_MEMORY_R16G16B16:
+ CONVERT_FLOAT_PIXEL (convert_rgb16_to_float, 3 * sizeof (guint16));
+ break;
+ case GDK_MEMORY_R16G16B16A16_PREMULTIPLIED:
+ CONVERT_FLOAT_PIXEL (convert_rgba16_to_float, 4 * sizeof (guint16));
+ break;
+ case GDK_MEMORY_R16G16B16_FLOAT:
+ CONVERT_FLOAT_PIXEL (convert_rgb16f_to_float, 3 * sizeof (guint16));
+ break;
+ case GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED:
+ CONVERT_FLOAT_PIXEL (convert_rgba16f_to_float, 4 * sizeof (guint16));
+ break;
+ case GDK_MEMORY_R32G32B32_FLOAT:
+ CONVERT_FLOAT_PIXEL (convert_rgb32f_to_float, 3 * sizeof (float));
+ break;
+ case GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED:
+ CONVERT_FLOAT_PIXEL (convert_rgba32f_to_float, 4 * sizeof (float));
+ break;
case GDK_MEMORY_N_FORMATS:
default:
diff --git a/gdk/gdkmemorytexture.h b/gdk/gdkmemorytexture.h
index b9f1f21282..114922153e 100644
--- a/gdk/gdkmemorytexture.h
+++ b/gdk/gdkmemorytexture.h
@@ -42,6 +42,20 @@ G_BEGIN_DECLS
* @GDK_MEMORY_A8B8G8R8: 4 bytes; for alpha, blue, green, red.
* @GDK_MEMORY_R8G8B8: 3 bytes; for red, green, blue. The data is opaque.
* @GDK_MEMORY_B8G8R8: 3 bytes; for blue, green, red. The data is opaque.
+ * @GDK_MEMORY_R16G16B16: 3 guint16 values; for red, green, blue. Since 4.6
+ * @GDK_MEMORY_R16G16B16A16_PREMULTIPLIED: 4 guint16 values; for red, green,
+ * blue, alpha. The color values are premultiplied with the alpha value.
+ * Since 4.6
+ * @GDK_MEMORY_R16G16B16_FLOAT: 3 half-float values; for red, green, blue.
+ * The data is opaque. Since 4.6
+ * @GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED: 4 half-float values; for
+ * red, green, blue and alpha. The color values are premultiplied with
+ * the alpha value. Since 4.6
+ * @GDK_MEMORY_B32G32R32_FLOAT: 3 float values; for blue, green, red.
+ * The data is opaque. Since 4.6
+ * @GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED: 4 float values; for
+ * red, green, blue and alpha. The color values are premultiplied with
+ * the alpha value. Since 4.6
* @GDK_MEMORY_N_FORMATS: The number of formats. This value will change as
* more formats get added, so do not rely on its concrete integer.
*
@@ -67,6 +81,12 @@ typedef enum {
GDK_MEMORY_A8B8G8R8,
GDK_MEMORY_R8G8B8,
GDK_MEMORY_B8G8R8,
+ GDK_MEMORY_R16G16B16,
+ GDK_MEMORY_R16G16B16A16_PREMULTIPLIED,
+ GDK_MEMORY_R16G16B16_FLOAT,
+ GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED,
+ GDK_MEMORY_R32G32B32_FLOAT,
+ GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED,
GDK_MEMORY_N_FORMATS
} GdkMemoryFormat;
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