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virgl: stricter usage of compressed 3d textures

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Using RGTC, ETC1, ETC2 or S3TC for 3D-textures isn't alowed by any of
OpenGL 4.6, OpenGL ES 3.2, ARB_texture_compression_rgtc,
EXT_texture_compression_rgtc, OES_compressed_ETC1_RGB8_texture,
S3_s3tc or EXT_texture_compression_s3tc specifications.

So let's not allow any of those compressed 3d-textures at all. It's not
going to work once it hits the OpenGL driver in virglrenderer.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
This commit is contained in:
Erik Faye-Lund 2019-03-28 19:03:47 +01:00
parent f53001324f
commit 4f153fcd5c
1 changed files with 6 additions and 0 deletions
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6
src/gallium/drivers/virgl/virgl_screen.c
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@ -625,6 +625,12 @@ virgl_is_format_supported( struct pipe_screen *screen,
target != PIPE_BUFFER)
return FALSE;
if ((format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC ||
format_desc->layout == UTIL_FORMAT_LAYOUT_ETC ||
format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) &&
target == PIPE_TEXTURE_3D)
return FALSE;
if (bind & PIPE_BIND_RENDER_TARGET) {
/* For ARB_framebuffer_no_attachments. */
if (format == PIPE_FORMAT_NONE)