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Diffstat (limited to 'src/mesa/drivers/common/meta.c')
| -rw-r--r-- | src/mesa/drivers/common/meta.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c index 26c89519679..f9b4755988b 100644 --- a/src/mesa/drivers/common/meta.c +++ b/src/mesa/drivers/common/meta.c @@ -2869,6 +2869,16 @@ copy_tex_sub_image(struct gl_context *ctx, /* Choose format/type for temporary image buffer */ format = _mesa_get_format_base_format(texImage->TexFormat); + if (format == GL_LUMINANCE || + format == GL_LUMINANCE_ALPHA || + format == GL_INTENSITY) { + /* We don't want to use GL_LUMINANCE, GL_INTENSITY, etc. for the + * temp image buffer because glReadPixels will do L=R+G+B which is + * not what we want (should be L=R). + */ + format = GL_RGBA; + } + type = get_temp_image_type(ctx, format); bpp = _mesa_bytes_per_pixel(format, type); if (bpp <= 0) { |