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memoryformat: Add gdk_memory_format_prefers_high_depth()

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This is unused so far, but is part of preparations for high depth
support in renderers.
This commit is contained in:
Benjamin Otte 2021-10-06 17:55:14 +02:00
parent 149395c306
commit afa004fb8b
2 changed files with 37 additions and 0 deletions
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36
gdk/gdkmemoryformat.c
View File

@ -177,6 +177,7 @@ struct _GdkMemoryFormatDescription
GdkMemoryAlpha alpha;
gsize bytes_per_pixel;
gsize alignment;
gboolean prefers_high_depth;
gboolean supports_gles;
struct {
guint internal_format;
@ -202,6 +203,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
4,
G_ALIGNOF (guchar),
FALSE,
FALSE,
{ GL_RGBA8, GL_BGRA, GL_UNSIGNED_BYTE },
b8g8r8a8_premultiplied_to_float,
b8g8r8a8_premultiplied_from_float,
@ -211,6 +213,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
4,
G_ALIGNOF (guchar),
FALSE,
FALSE,
{ GL_RGBA8, GL_BGRA, GDK_GL_UNSIGNED_BYTE_FLIPPED },
a8r8g8b8_premultiplied_to_float,
a8r8g8b8_premultiplied_from_float,
@ -219,6 +222,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
GDK_MEMORY_ALPHA_PREMULTIPLIED,
4,
G_ALIGNOF (guchar),
FALSE,
TRUE,
{ GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE },
r8g8b8a8_premultiplied_to_float,
@ -229,6 +233,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
4,
G_ALIGNOF (guchar),
FALSE,
FALSE,
{ GL_RGBA8, GL_BGRA, GL_UNSIGNED_BYTE },
b8g8r8a8_to_float,
b8g8r8a8_from_float,
@ -238,6 +243,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
4,
G_ALIGNOF (guchar),
FALSE,
FALSE,
{ GL_RGBA8, GL_RGBA, GDK_GL_UNSIGNED_BYTE_FLIPPED },
a8r8g8b8_to_float,
a8r8g8b8_from_float,
@ -246,6 +252,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
GDK_MEMORY_ALPHA_STRAIGHT,
4,
G_ALIGNOF (guchar),
FALSE,
TRUE,
{ GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE },
r8g8b8a8_to_float,
@ -256,6 +263,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
4,
G_ALIGNOF (guchar),
FALSE,
FALSE,
{ GL_RGBA8, GL_BGRA, GDK_GL_UNSIGNED_BYTE_FLIPPED },
a8b8g8r8_to_float,
a8b8g8r8_from_float,
@ -264,6 +272,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
GDK_MEMORY_ALPHA_OPAQUE,
3,
G_ALIGNOF (guchar),
FALSE,
TRUE,
{ GL_RGBA8, GL_RGB, GL_UNSIGNED_BYTE },
r8g8b8_to_float,
@ -274,6 +283,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
3,
G_ALIGNOF (guchar),
FALSE,
FALSE,
{ GL_RGB8, GL_BGR, GL_UNSIGNED_BYTE },
b8g8r8_to_float,
b8g8r8_from_float,
@ -283,6 +293,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
6,
G_ALIGNOF (guint16),
TRUE,
TRUE,
{ GL_RGB16, GL_RGB, GL_UNSIGNED_SHORT },
r16g16b16_to_float,
r16g16b16_from_float,
@ -292,6 +303,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
8,
G_ALIGNOF (guint16),
TRUE,
TRUE,
{ GL_RGBA16, GL_RGBA, GL_UNSIGNED_SHORT },
r16g16b16a16_to_float,
r16g16b16a16_from_float,
@ -301,6 +313,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
6,
G_ALIGNOF (guint16),
TRUE,
TRUE,
{ GL_RGB16F, GL_RGB, GL_HALF_FLOAT },
r16g16b16_float_to_float,
r16g16b16_float_from_float,
@ -310,6 +323,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
8,
G_ALIGNOF (guint16),
TRUE,
TRUE,
{ GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT },
r16g16b16a16_float_to_float,
r16g16b16a16_float_from_float,
@ -319,6 +333,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
12,
G_ALIGNOF (float),
TRUE,
TRUE,
{ GL_RGB32F, GL_RGB, GL_FLOAT },
r32g32b32_float_to_float,
r32g32b32_float_from_float,
@ -328,6 +343,7 @@ static const GdkMemoryFormatDescription memory_formats[GDK_MEMORY_N_FORMATS] = {
16,
G_ALIGNOF (float),
TRUE,
TRUE,
{ GL_RGBA32F, GL_RGBA, GL_FLOAT },
r32g32b32a32_float_to_float,
r32g32b32a32_float_from_float,
@ -346,6 +362,26 @@ gdk_memory_format_alignment (GdkMemoryFormat format)
return memory_formats[format].alignment;
}
/*<private>
* gdk_memory_format_prefers_high_depth:
* @format: a memory format
*
* Checks if the given format benefits from being rendered
* in bit depths higher than 8bits per pixel. See
* gsk_render_node_prefers_high_depth() for more information
* on this.
* Usually this is the case when
* gdk_memory_format_bytes_per_pixel() is larger than 4.
*
* Returns: %TRUE if the format benefits from being
* composited in hgiher bit depths.
**/
gboolean
gdk_memory_format_prefers_high_depth (GdkMemoryFormat format)
{
return memory_formats[format].prefers_high_depth;
}
gboolean
gdk_memory_format_gl_format (GdkMemoryFormat format,
gboolean gles,

1
gdk/gdkmemoryformatprivate.h
View File

@ -26,6 +26,7 @@ G_BEGIN_DECLS
gsize gdk_memory_format_alignment (GdkMemoryFormat format) G_GNUC_CONST;
gsize gdk_memory_format_bytes_per_pixel (GdkMemoryFormat format) G_GNUC_CONST;
gboolean gdk_memory_format_prefers_high_depth(GdkMemoryFormat format) G_GNUC_CONST;
gboolean gdk_memory_format_gl_format (GdkMemoryFormat format,
gboolean gles,
guint *out_internal_format,