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mesa: Allow MESA_framebuffer_flip_y for GLES 3

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Implement glFramebufferParameteriMESA on GLES 3 so
that the extension is not dependant on GLES 3.1

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This commit is contained in:
Fritz Koenig
2019-07-30 14:53:30 -07:00
parent 9fb76392de
commit 66937abe2b
8 changed files with 108 additions and 20 deletions
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32
docs/specs/MESA_framebuffer_flip_y.txt
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@@ -23,7 +23,7 @@ Status
Version
Version 2, June 4, 2019
Version 3, August, 2019
Number
@@ -32,7 +32,7 @@ Number
Dependencies
OpenGL ES 3.1 or OpenGL 4.3 is required, for FramebufferParameteri.
Requires OpenGL ES 3.0, OpenGL 4.3, or ARB_framebuffer_no_attachments.
Overview
@@ -59,7 +59,10 @@ Issues
New Procedures and Functions
None
OpenGL ES must provide the following functions:
void FramebufferParameteriMESA(enum target, enum pname, int param);
void GetFramebufferParameterivMESA(enum target, enum pname, int *params);
New Types
@@ -67,20 +70,35 @@ New Types
New Tokens
Accepted by the <pname> argument of FramebufferParameteri and
GetFramebufferParameteriv:
Accepted by the <pname> argument of FramebufferParameteriMESA and
GetFramebufferParameterivMESA:
GL_FRAMEBUFFER_FLIP_Y_MESA 0x8BBB
Interactions with OpenGL 4.3, OpenGL ES 3.1, ARB_framebuffer_no_attachments
and any other versions and extensions that provide the entry points
FramebufferParameteri and GetFramebufferParameteriv
Token GL_FRAMEBUFFER_FLIP_Y_MESA is accepted as the <pname> argument of
FramebufferParameteri and GetFramebufferParameteriv.
Errors
An INVALID_OPERATION error is generated by GetFramebufferParameteriv if the
default framebuffer is bound to <target> and <pname> is FRAMEBUFFER_FLIP_Y_MESA.
An INVALID_OPERATION error is generated by GetFramebufferParameteriv or
GetFramebufferParameterivMESA if the default framebuffer is bound
to <target> and <pname> is GL_FRAMEBUFFER_FLIP_Y_MESA.
Revision History
Version 3, August, 2019
Allow OpenGL ES 3.0 to implement by adding functions
FramebufferParameteriMESA and GetFramebufferParameterivMESA which were
previously only available in OpenGL ES 3.1.
Version 2, June, 2019
Enable extension for OpenGL 4.3 and beyond