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mesa: fix CopyTexImage format compatibility checks for ES

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the ES spec imposes additional requirements for copy commands,
specifically that the formats have matching component sizes

the existing check used the driver's internal formats to check
for a match, which is broken since the spec requires the match be
between the passed internalFormat and the buffer's effective internal
format (i.e., this has no relation to what the driver supports)

fixes KHR-GLES3.copy_tex_image_conversions.forbidden* on a bunch of drivers

cc: mesa-stable

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28030>
This commit is contained in:
Mike Blumenkrantz 2024-03-06 14:32:40 -05:00 • committed by Marge Bot
parent a5010f5f03
commit 2cd192f879
1 changed files with 23 additions and 12 deletions
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35
src/mesa/main/teximage.c
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@ -4563,22 +4563,33 @@ copyteximage(struct gl_context *ctx, GLuint dims, struct gl_texture_object *texO
return;
}
}
/* From Page 139 of OpenGL ES 3.0 spec:
* "If internalformat is sized, the internal format of the new texel
* array is internalformat, and this is also the new texel array’s
* effective internal format. If the component sizes of internalformat
* do not exactly match the corresponding component sizes of the source
* buffer’s effective internal format, described below, an
* INVALID_OPERATION error is generated. If internalformat is unsized,
* the internal format of the new texel array is the effective internal
* format of the source buffer, and this is also the new texel array’s
* effective internal format.
*/
else if (formats_differ_in_component_sizes (texFormat, rb->Format)) {
else {
/* From Page 139 of OpenGL ES 3.0 spec:
* "If internalformat is sized, the internal format of the new texel
* array is internalformat, and this is also the new texel array’s
* effective internal format. If the component sizes of internalformat
* do not exactly match the corresponding component sizes of the source
* buffer’s effective internal format, described below, an
* INVALID_OPERATION error is generated. If internalformat is unsized,
* the internal format of the new texel array is the effective internal
* format of the source buffer, and this is also the new texel array’s
* effective internal format.
*/
enum pipe_format rb_format = st_choose_format(ctx->st, rb->InternalFormat,
GL_NONE, GL_NONE,
PIPE_TEXTURE_2D, 0, 0, 0,
false, false);
enum pipe_format new_format = st_choose_format(ctx->st, internalFormat,
GL_NONE, GL_NONE,
PIPE_TEXTURE_2D, 0, 0, 0,
false, false);
/* this comparison must be done on the API format, not the driver format */
if (formats_differ_in_component_sizes (new_format, rb_format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%uD(component size changed in"
" internal format)", dims);
return;
}
}
}