static void *
i915_create_depth_stencil_state(struct pipe_context *pipe,
const struct pipe_depth_stencil_alpha_state *depth_stencil)
{
struct i915_depth_stencil_state *cso = CALLOC_STRUCT( i915_depth_stencil_state );
{
int testmask = depth_stencil->stencil[0].valuemask & 0xff;
int writemask = depth_stencil->stencil[0].writemask & 0xff;
cso->stencil_modes4 |= (_3DSTATE_MODES_4_CMD |
ENABLE_STENCIL_TEST_MASK |
STENCIL_TEST_MASK(testmask) |
ENABLE_STENCIL_WRITE_MASK |
STENCIL_WRITE_MASK(writemask));
}
if (depth_stencil->stencil[0].enabled) {
int test = i915_translate_compare_func(depth_stencil->stencil[0].func);
int fop = i915_translate_stencil_op(depth_stencil->stencil[0].fail_op);
int dfop = i915_translate_stencil_op(depth_stencil->stencil[0].zfail_op);
int dpop = i915_translate_stencil_op(depth_stencil->stencil[0].zpass_op);
cso->stencil_LIS5 |= (S5_STENCIL_TEST_ENABLE |
S5_STENCIL_WRITE_ENABLE |
(test << S5_STENCIL_TEST_FUNC_SHIFT) |
(fop << S5_STENCIL_FAIL_SHIFT) |
(dfop << S5_STENCIL_PASS_Z_FAIL_SHIFT) |
(dpop << S5_STENCIL_PASS_Z_PASS_SHIFT));
}
if (depth_stencil->stencil[1].enabled) {
int test = i915_translate_compare_func(depth_stencil->stencil[1].func);
int fop = i915_translate_stencil_op(depth_stencil->stencil[1].fail_op);
int dfop = i915_translate_stencil_op(depth_stencil->stencil[1].zfail_op);
int dpop = i915_translate_stencil_op(depth_stencil->stencil[1].zpass_op);
int tmask = depth_stencil->stencil[1].valuemask & 0xff;
int wmask = depth_stencil->stencil[1].writemask & 0xff;
cso->bfo[0] = (_3DSTATE_BACKFACE_STENCIL_OPS |
BFO_ENABLE_STENCIL_FUNCS |
BFO_ENABLE_STENCIL_TWO_SIDE |
BFO_ENABLE_STENCIL_REF |
BFO_STENCIL_TWO_SIDE |
(test << BFO_STENCIL_TEST_SHIFT) |
(fop << BFO_STENCIL_FAIL_SHIFT) |
(dfop << BFO_STENCIL_PASS_Z_FAIL_SHIFT) |
(dpop << BFO_STENCIL_PASS_Z_PASS_SHIFT));
cso->bfo[1] = (_3DSTATE_BACKFACE_STENCIL_MASKS |
BFM_ENABLE_STENCIL_TEST_MASK |
BFM_ENABLE_STENCIL_WRITE_MASK |
(tmask << BFM_STENCIL_TEST_MASK_SHIFT) |
(wmask << BFM_STENCIL_WRITE_MASK_SHIFT));
}
else {
/* This actually disables two-side stencil: The bit set is a
* modify-enable bit to indicate we are changing the two-side
* setting. Then there is a symbolic zero to show that we are
* setting the flag to zero/off.
*/
cso->bfo[0] = (_3DSTATE_BACKFACE_STENCIL_OPS |
BFO_ENABLE_STENCIL_TWO_SIDE |
0);
cso->bfo[1] = 0;
}
if (depth_stencil->depth.enabled) {
int func = i915_translate_compare_func(depth_stencil->depth.func);
cso->depth_LIS6 |= (S6_DEPTH_TEST_ENABLE |
(func << S6_DEPTH_TEST_FUNC_SHIFT));
if (depth_stencil->depth.writemask)
cso->depth_LIS6 |= S6_DEPTH_WRITE_ENABLE;
}
if (depth_stencil->alpha.enabled) {
int test = i915_translate_compare_func(depth_stencil->alpha.func);
ubyte refByte = float_to_ubyte(depth_stencil->alpha.ref_value);
cso->depth_LIS6 |= (S6_ALPHA_TEST_ENABLE |
(test << S6_ALPHA_TEST_FUNC_SHIFT) |
(((unsigned) refByte) << S6_ALPHA_REF_SHIFT));
}
return cso;
}
static void *
i915_create_sampler_state(struct pipe_context *pipe,
const struct pipe_sampler_state *sampler)
{
struct i915_sampler_state *cso = CALLOC_STRUCT( i915_sampler_state );
const unsigned ws = sampler->wrap_s;
const unsigned wt = sampler->wrap_t;
const unsigned wr = sampler->wrap_r;
unsigned minFilt, magFilt;
unsigned mipFilt;
cso->templ = sampler;
mipFilt = translate_mip_filter(sampler->min_mip_filter);
minFilt = translate_img_filter( sampler->min_img_filter );
magFilt = translate_img_filter( sampler->mag_img_filter );
if (sampler->max_anisotropy > 2.0) {
cso->state[0] |= SS2_MAX_ANISO_4;
}
{
int b = (int) (sampler->lod_bias * 16.0);
b = CLAMP(b, -256, 255);
cso->state[0] |= ((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK);
}
/* Shadow:
*/
if (sampler->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE)
{
cso->state[0] |= (SS2_SHADOW_ENABLE |
i915_translate_compare_func(sampler->compare_func));
minFilt = FILTER_4X4_FLAT;
magFilt = FILTER_4X4_FLAT;
}
cso->state[0] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
(mipFilt << SS2_MIP_FILTER_SHIFT) |
(magFilt << SS2_MAG_FILTER_SHIFT));
cso->state[1] |=
((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
(translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
(translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
if (sampler->normalized_coords)
cso->state[1] |= SS3_NORMALIZED_COORDS;
{
int minlod = (int) (16.0 * sampler->min_lod);
int maxlod = (int) (16.0 * sampler->max_lod);
minlod = CLAMP(minlod, 0, 16 * 11);
maxlod = CLAMP(maxlod, 0, 16 * 11);
if (minlod > maxlod)
maxlod = minlod;
cso->minlod = minlod;
cso->maxlod = maxlod;
}
{
ubyte r = float_to_ubyte(sampler->border_color[0]);
ubyte g = float_to_ubyte(sampler->border_color[1]);
ubyte b = float_to_ubyte(sampler->border_color[2]);
ubyte a = float_to_ubyte(sampler->border_color[3]);
cso->state[2] = I915PACKCOLOR8888(r, g, b, a);
}
return cso;
}
