diff options
Diffstat (limited to 'src/gallium/drivers/vc4/vc4_state.c')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_state.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/gallium/drivers/vc4/vc4_state.c b/src/gallium/drivers/vc4/vc4_state.c index 58c300e6549..c7757709ee6 100644 --- a/src/gallium/drivers/vc4/vc4_state.c +++ b/src/gallium/drivers/vc4/vc4_state.c @@ -116,6 +116,50 @@ vc4_create_blend_state(struct pipe_context *pctx, return vc4_generic_cso_state_create(cso, sizeof(*cso)); } +/** + * The TLB_STENCIL_SETUP data has a little bitfield for common writemask + * values, so you don't have to do a separate writemask setup. + */ +static uint8_t +tlb_stencil_setup_writemask(uint8_t mask) +{ + switch (mask) { + case 0x1: return 0; + case 0x3: return 1; + case 0xf: return 2; + case 0xff: return 3; + default: return 0xff; + } +} + +static uint32_t +tlb_stencil_setup_bits(const struct pipe_stencil_state *state, + uint8_t writemask_bits) +{ + static const uint8_t op_map[] = { + [PIPE_STENCIL_OP_ZERO] = 0, + [PIPE_STENCIL_OP_KEEP] = 1, + [PIPE_STENCIL_OP_REPLACE] = 2, + [PIPE_STENCIL_OP_INCR] = 3, + [PIPE_STENCIL_OP_DECR] = 4, + [PIPE_STENCIL_OP_INVERT] = 5, + [PIPE_STENCIL_OP_INCR_WRAP] = 6, + [PIPE_STENCIL_OP_DECR_WRAP] = 7, + }; + uint32_t bits = 0; + + if (writemask_bits != 0xff) + bits |= writemask_bits << 28; + bits |= op_map[state->zfail_op] << 25; + bits |= op_map[state->zpass_op] << 22; + bits |= op_map[state->fail_op] << 19; + bits |= state->func << 16; + /* Ref is filled in at uniform upload time */ + bits |= state->valuemask << 0; + + return bits; +} + static void * vc4_create_depth_stencil_alpha_state(struct pipe_context *pctx, const struct pipe_depth_stencil_alpha_state *cso) @@ -139,6 +183,33 @@ vc4_create_depth_stencil_alpha_state(struct pipe_context *pctx, VC4_CONFIG_BITS_DEPTH_FUNC_SHIFT); } + if (cso->stencil[0].enabled) { + const struct pipe_stencil_state *front = &cso->stencil[0]; + const struct pipe_stencil_state *back = &cso->stencil[1]; + + uint8_t front_writemask_bits = + tlb_stencil_setup_writemask(front->writemask); + uint8_t back_writemask_bits = + tlb_stencil_setup_writemask(back->writemask); + + so->stencil_uniforms[0] = + tlb_stencil_setup_bits(front, front_writemask_bits); + if (back->enabled) { + so->stencil_uniforms[0] |= (1 << 30); + so->stencil_uniforms[1] = + tlb_stencil_setup_bits(back, back_writemask_bits); + so->stencil_uniforms[1] |= (2 << 30); + } else { + so->stencil_uniforms[0] |= (3 << 30); + } + + if (front_writemask_bits == 0xff || + back_writemask_bits == 0xff) { + so->stencil_uniforms[2] = (front_writemask_bits | + (back_writemask_bits << 8)); + } + } + return so; } |