Merge pull request #11 from courtney-g/170322-display-p3-ext
170322 display p3 ext
diff --git a/api/EGL/eglext.h b/api/EGL/eglext.h
index 65fb787..5f914f4 100644
--- a/api/EGL/eglext.h
+++ b/api/EGL/eglext.h
@@ -651,6 +651,16 @@
#define EGL_GL_COLORSPACE_BT2020_PQ_EXT 0x3340
#endif /* EGL_EXT_gl_colorspace_bt2020_pq */
+#ifndef EGL_EXT_gl_colorspace_display_p3
+#define EGL_EXT_gl_colorspace_display_p3 1
+#define EGL_GL_COLORSPACE_DISPLAY_P3_EXT 0x3363
+#endif /* EGL_EXT_gl_colorspace_display_p3 */
+
+#ifndef EGL_EXT_gl_colorspace_display_p3_linear
+#define EGL_EXT_gl_colorspace_display_p3_linear 1
+#define EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT 0x3362
+#endif /* EGL_EXT_gl_colorspace_display_p3_linear */
+
#ifndef EGL_EXT_gl_colorspace_scrgb_linear
#define EGL_EXT_gl_colorspace_scrgb_linear 1
#define EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT 0x3350
diff --git a/api/egl.xml b/api/egl.xml
index 72a714c..cd53ec2 100644
--- a/api/egl.xml
+++ b/api/egl.xml
@@ -793,7 +793,9 @@
<unused start="0x3353" end="0x335F"/>
<enum value="0x3360" name="EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT"/>
<enum value="0x3361" name="EGL_CTA861_3_MAX_FRAME_AVERAGE_LEVEL_EXT"/>
- <unused start="0x3362" end="0x339F"/>
+ <enum value="0x3362" name="EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT"/>
+ <enum value="0x3363" name="EGL_GL_COLORSPACE_DISPLAY_P3_EXT"/>
+ <unused start="0x3364" end="0x339F"/>
</enums>
<enums namespace="EGL" start="0x33A0" end="0x33AF" vendor="ANGLE" comment="Reserved for Shannon Woods (Bug 13175)">
@@ -2107,6 +2109,16 @@
<enum name="EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT"/>
</require>
</extension>
+ <extension name="EGL_EXT_gl_colorspace_display_p3_linear" supported="egl">
+ <require>
+ <enum name="EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT"/>
+ </require>
+ </extension>
+ <extension name="EGL_EXT_gl_colorspace_display_p3" supported="egl">
+ <require>
+ <enum name="EGL_GL_COLORSPACE_DISPLAY_P3_EXT"/>
+ </require>
+ </extension>
<extension name="EGL_EXT_image_dma_buf_import" supported="egl">
<require>
<enum name="EGL_LINUX_DMA_BUF_EXT"/>
diff --git a/extensions/EXT/EGL_EXT_gl_colorspace_display_p3.txt b/extensions/EXT/EGL_EXT_gl_colorspace_display_p3.txt
new file mode 100644
index 0000000..8dbb743
--- /dev/null
+++ b/extensions/EXT/EGL_EXT_gl_colorspace_display_p3.txt
@@ -0,0 +1,135 @@
+Name
+
+ EXT_gl_colorspace_display_p3
+
+Name Strings
+
+ EGL_EXT_gl_colorspace_display_p3_linear
+ EGL_EXT_gl_colorspace_display_p3
+
+Contributors
+
+ Courtney Goeltzenleuchter
+ Jesse Hall
+
+Contact
+
+ Courtney Goeltzenleuchter (courtneygo 'at' google.com)
+
+IP Status
+
+ No known IP claims.
+
+Status
+
+ Draft
+
+Version
+
+ Version 1 - Mar 22, 2017
+
+Number
+
+ EGL Extension #118
+
+Extension Type
+
+ EGL display extension
+
+Dependencies
+
+ These extensions are written against the wording of the EGL 1.5
+ specification (August 27, 2014).
+
+ These extensions require EGL_KHR_gl_colorspace.
+
+Overview
+
+ Applications that want to use the Display-P3 color space (DCI-P3 primaries
+ and linear or sRGB-like transfer function) can use this extension to
+ communicate to the platform that framebuffer contents represent colors in
+ the Display-P3 color space.
+ The application is responsible for producing appropriate framebuffer
+ contents, but will typically use built-in sRGB encoding in OpenGL and OpenGL
+ ES to accomplish this.
+
+New Procedures and Functions
+
+ None.
+
+New Tokens
+
+ Accepted as attribute values for EGL_GL_COLORSPACE by
+ eglCreateWindowSurface, eglCreatePbufferSurface and eglCreatePixmapSurface:
+
+ [[ If EGL_EXT_gl_colorspace_display_p3_linear is supported ]]
+
+ EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT 0x3362
+
+ [[ If EGL_EXT_gl_colorspace_bt2020_pq is supported ]]
+
+ EGL_GL_COLORSPACE_DISPLAY_P3_EXT 0x3363
+
+Modifications to the EGL 1.5 Specification
+
+ Insert below text in the 3rd paragraph on page 33 in 3.5.1 "Creating On-
+ Screen Rendering Surfaces, before "The default value of EGL_GL_COLORSPACE
+ is EGL_GL_COLORSPACE_LINEAR.":
+
+ [[ If EGL_EXT_gl_colorspace_display_p3_linear is supported ]]
+
+ If its value is EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT, then a linear
+ Display-P3 color space is assumed, with a corresponding
+ GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING value of GL_LINEAR.
+
+ [[ If EGL_EXT_gl_colorspace_display_p3 is supported ]]
+
+ If its value is EGL_GL_COLORSPACE_DISPLAY_P3_EXT, then a non-linear, sRGB
+ encoded Display-P3 color space is assumed, with a corresponding GL_FRAME-
+ BUFFER_ATTACHMENT_COLOR_ENCODING value of GL_SRGB.
+ Only OpenGL and OpenGL ES contexts which support sRGB rendering must
+ respect requests for EGL_GL_COLORSPACE_SRGB_KHR, and only to sRGB
+ formats supported by the context (normally just SRGB8).
+
+ Modify the 4th paragraph on the same page:
+
+ Note that the EGL_GL_COLORSPACE_SRGB attribute is used only by OpenGL and
+ OpenGL ES contexts supporting sRGB framebuffers. EGL itself does not
+ distinguish multiple colorspace models. Refer to the "sRGB Conversion"
+ sections of the OpenGL 4.4 and OpenGL ES 3.0 specifications for more
+ information.
+
+Errors
+
+ Modify below error in the "Errors" section on page 34:
+
+ "If config does not support the OpenVG colorspace or alpha format at-
+ tributes specified in attrib list (as defined for eglCreatePlatformWindow-
+ Surface), an EGL_BAD_MATCH error is generated."
+
+ To include OpenGL colorspace as well:
+
+ "If config does not support the OpenGL colorspace, the OpenVG colorspace or
+ alpha format attributes specified in attrib list (as defined for eglCreate-
+ PlatformWindowSurface), an EGL_BAD_MATCH error is generated."
+
+Issues
+
+ 1. Removed section talking about HDR features, e.g. luminance > 80nits.
+ Do we want to keep that here in anticipation of HDR support in the future?
+
+ 2. When creating an EGL surface, what happens when the specified colorspace
+ is not compatible with or supported by the EGLConfig?
+
+ RESOLVED: There is currently no way to query the compatibility of a
+ EGLConfig and colorspace pair. So the only option is to define an error
+ case similar to that of OpenVG colorspace, i.e. if config does not
+ support the colorspace specified in attrib list (as defined for egl-
+ CreateWindowSurface, eglCreatePbufferSurface and eglCreatePixmapSurface),
+ an EGL_BAD_MATCH error is generated.
+
+Revision History
+
+ Version 1, 2017/03/22
+ - Internal revisions
+
diff --git a/index.php b/index.php
index 9e74e8a..3536c7a 100644
--- a/index.php
+++ b/index.php
@@ -310,6 +310,10 @@
</li>
<li value=117> <a href="extensions/EXT/EGL_EXT_surface_CTA861_3_metadata.txt">EGL_EXT_surface_CTA861_3_metadata</a>
</li>
+<li value=118> <a href="extensions/EXT/EXT_gl_colorspace_display_p3.txt">EGL_EXT_gl_colorspace_display_p3</a>
+</li>
+<li value=118> <a href="extensions/EXT/EXT_gl_colorspace_display_p3.txt">EGL_EXT_gl_colorspace_display_p3_linear</a>
+</li>
</ol>
<h6> Providing Feedback on the Registry </h6>
diff --git a/registry.tcl b/registry.tcl
index e78cd03..97d85ca 100644
--- a/registry.tcl
+++ b/registry.tcl
@@ -604,7 +604,7 @@
flags public
filename extensions/EXT/EGL_EXT_compositor.txt
}
-extension EGL_EXT_surface_CTA861_3_metadta {
+extension EGL_EXT_surface_CTA861_3_metadata {
number 117
flags public
filename extensions/EXT/EGL_EXT_surface_CTA861_3_metadata.txt
@@ -614,4 +614,9 @@
flags public
filename extensions/KHR/EGL_KHR_display_reference.txt
}
+extension EGL_EXT_gl_colorspace_display_p3 {
+ number 118
+ flags public
+ filename extensions/EXT/EGL_EXT_colorspace_display_p3.txt
+}
# Next free extension number: 119
