[gtk/wip/otte/memoryformat: 3/4] memoryformat: Add gdk_memory_format_prefers_high_depth()
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wip/otte/memoryformat: 3/4] memoryformat: Add gdk_memory_format_prefers_high_depth()
- Date: Wed, 6 Oct 2021 16:27:44 +0000 (UTC)
commit 45274bf0cf3d357c627868f424dae96297ff51f8
Author: Benjamin Otte <otte redhat com>
Date: Wed Oct 6 17:55:14 2021 +0200
memoryformat: Add gdk_memory_format_prefers_high_depth()
This is unused so far, but is part of preparations for high depth
support in renderers.
gdk/gdkmemoryformat.c | 36 ++++++++++++++++++++++++++++++++++++
gdk/gdkmemoryformatprivate.h | 1 +
2 files changed, 37 insertions(+)
---
diff --git a/gdk/gdkmemoryformat.c b/gdk/gdkmemoryformat.c
index 887466da56..04986b45ee 100644
--- a/gdk/gdkmemoryformat.c
+++ b/gdk/gdkmemoryformat.c
@@ -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,
diff --git a/gdk/gdkmemoryformatprivate.h b/gdk/gdkmemoryformatprivate.h
index 8c8e024b23..344e47fade 100644
--- a/gdk/gdkmemoryformatprivate.h
+++ b/gdk/gdkmemoryformatprivate.h
@@ -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,
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