etnaviv: Generate new sin/cos instructions on GC3000

Shaders using sin/cos instructions were not working on GC3000.

The reason for this turns out to be that these chips implement sin/cos
in a different way (but using the same opcodes):

- Need their input scaled by 1/pi instead of 2/pi.

- Output an x and y component, which need to be multiplied to
  get the result.

- tex_amode needs to be set to 1.

Add a new bit to the compiler specs and generate these instructions
as necessary.

CC: <[email protected]>
Signed-off-by: Wladimir J. van der Laan <[email protected]>
Acked-by: Christian Gmeiner <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gallium/drivers/etnaviv/etnaviv_internal.h b/src/gallium/drivers/etnaviv/etnaviv_internal.h
index fa75c3e936c..983321a9d93 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_internal.h
+++ b/src/gallium/drivers/etnaviv/etnaviv_internal.h
@@ -59,6 +59,8 @@ struct etna_specs {
    unsigned has_sign_floor_ceil : 1;
    /* can use VS_RANGE, PS_RANGE registers*/
    unsigned has_shader_range_registers : 1;
+   /* has the new sin/cos functions */
+   unsigned has_new_sin_cos : 1;
    /* can use any kind of wrapping mode on npot textures */
    unsigned npot_tex_any_wrap;
    /* number of bits per TS tile */