On 05/17/2017 12:05 PM, Tapani Pälli wrote:
On 05/17/2017 11:49 AM, Gao, Chun wrote:
Thanks for your comments. Are we working on GL_EXT_sRGB, or is there
any plan for that?
There has been work done to enable it:
https://patchwork.freedesktop.org/patch/148975/
I believe Harish has been fixing some of the faults, work is still ongoing.
although yeah now when reading the spec, it's not going to solve this
one, it says:
--- 8< ---
3) Should we allow the SRGB_*_S3TC_DXT* or any of the other COMPRESSED
formats if the implementation supports any of those formats?
No since all hardware doesn't support this. It can be added as a
separate extension if needed.
--- 8< ---
so ... ATM I'm not sure what the correct solution here is.
-----Original Message-----
From: Palli, Tapani
Sent: Wednesday, May 17, 2017 4:35 PM
To: Gao, Chun <chun....@intel.com>; mesa-dev@lists.freedesktop.org
Subject: Re: [Mesa-dev] [PATCH] mesa: Allow MESA_FORMAT_LAYOUT_S3TC in
non-desktop mesa
On 05/17/2017 11:09 AM, Gao, Chun wrote:
I know EXT_texture_sRGB is desktop OpenGL extension.
On Android-IA and ChromeOS ARC++, the game
https://play.google.com/store/apps/details?id=com.eline.neveralonemobile
could not display some texture correctly. I found the following
formats which the game uses were blocked in
_mesa_is_compressed_format():
GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
GL_COMPRESSED_RGB_S3TC_DXT1_EXT
After removing _mesa_is_desktop_gl(ctx), the issue get fixed. I don't
know why the android game uses desktop OpenGL formats
GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT and
GL_COMPRESSED_SRGB_S3TC_DXT1_EXT. To make it work, I removed the
desktop check.
OK, this is useful information and means that the game has a bug.
If I understand requirements correctly here if/when GL_EXT_sRGB
extension support is added, then this game should start to work OK.
-----Original Message-----
From: Palli, Tapani
Sent: Wednesday, May 17, 2017 3:36 PM
To: Gao, Chun <chun....@intel.com>; mesa-dev@lists.freedesktop.org
Subject: Re: [Mesa-dev] [PATCH] mesa: Allow MESA_FORMAT_LAYOUT_S3TC
in non-desktop mesa
IMO this is not correct. Are you having problems with some application?
For Android games Mesa should already return true for the previous check
(ANGLE_texture_compression_dxt) and things should work OK. The check
you are touching is desktop specific because EXT_texture_sRGB is
available only on desktop GL (closest gles equivalent being
GL_EXT_sRGB which we don't support).
On 05/17/2017 10:22 AM, Gao Chun wrote:
As s3tc formats are used in many Android games, desktop mesa check
should be removed for MESA_FORMAT_LAYOUT_S3TC.
---
src/mesa/main/glformats.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c
index 4f240206ff45..e4f283c4dfa8 100644
--- a/src/mesa/main/glformats.c
+++ b/src/mesa/main/glformats.c
@@ -1376,8 +1376,7 @@ _mesa_is_compressed_format(const struct
gl_context *ctx, GLenum format)
*/
return ctx->Extensions.ANGLE_texture_compression_dxt;
} else {
- return _mesa_is_desktop_gl(ctx)
- && ctx->Extensions.EXT_texture_sRGB
+ return ctx->Extensions.EXT_texture_sRGB
&& ctx->Extensions.EXT_texture_compression_s3tc;
}
case MESA_FORMAT_LAYOUT_FXT1:
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