radeonsi: add ETC1 support for Stoney

It's a subset of ETC2. Tested.

For more information, see page 42 and onward:
http://www.graphicshardware.org/previous/www_2007/presentations/strom-etc2-gh07.pdf

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index c010998..9e0ccfc 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -1379,6 +1379,7 @@ static uint32_t si_translate_texformat(struct pipe_screen *screen,
        if (desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
            sscreen->b.family >= CHIP_STONEY) {
                switch (format) {
+               case PIPE_FORMAT_ETC1_RGB8:
                case PIPE_FORMAT_ETC2_RGB8:
                case PIPE_FORMAT_ETC2_SRGB8:
                        return V_008F14_IMG_DATA_FORMAT_ETC2_RGB;