LLVMValueRef dy20_ooa;
LLVMValueRef dy01_ooa;
LLVMValueRef dx20_ooa;
- LLVMValueRef dx01_ooa;
+ LLVMValueRef dx01_ooa;
+
+ /* Temporary, per-attribute:
+ */
+ LLVMValueRef v0a;
+ LLVMValueRef v1a;
+ LLVMValueRef v2a;
};
static LLVMTypeRef type4f(void)
emit_constant_coef4( LLVMBuilderRef builder,
struct lp_setup_args *args,
unsigned slot,
- LLVMValueRef vert,
- unsigned attr)
+ LLVMValueRef vert)
{
LLVMValueRef zero = LLVMConstReal(LLVMFloatType(), 0.0);
LLVMValueRef zerovec = vec4f_from_scalar(builder, zero, "zero");
- LLVMValueRef idx = LLVMConstInt(LLVMInt32Type(), attr, 0);
- LLVMValueRef attr_ptr = LLVMBuildGEP(builder, vert, &idx, 1, "attr_ptr");
- LLVMValueRef vert_attr = LLVMBuildLoad(builder, attr_ptr, "vert_attr");
-
- store_coef(builder, args, slot, vert_attr, zerovec, zerovec);
+ store_coef(builder, args, slot, vert, zerovec, zerovec);
}
return clamp_value;
}
+static void
+lp_twoside(LLVMBuilderRef b,
+ struct lp_setup_args *args,
+ const struct lp_setup_variant_key *key)
+{
+ LLVMValueRef a0_back, a1_back, a2_back;
+ LLVMValueRef idx2 = LLVMConstInt(LLVMInt32Type(), key->bcolor_slot, 0);
+
+ LLVMValueRef facing = args->facing;
+ LLVMValueRef front_facing = LLVMBuildICmp(b, LLVMIntEQ, facing, LLVMConstInt(LLVMInt32Type(), 0, 0), ""); /** need i1 for if condition */
+
+ a0_back = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx2, 1, ""), "v0a_back");
+ a1_back = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx2, 1, ""), "v1a_back");
+ a2_back = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx2, 1, ""), "v2a_back");
+
+ /* Possibly swap the front and back attrib values,
+ *
+ * Prefer select to if so we don't have to worry about phis or
+ * allocas.
+ */
+ args->v0a = LLVMBuildSelect(b, front_facing, args->v0a, a0_back, "");
+ args->v1a = LLVMBuildSelect(b, front_facing, args->v1a, a1_back, "");
+ args->v2a = LLVMBuildSelect(b, front_facing, args->v2a, a2_back, "");
+
+}
+
+static void
+lp_do_offset_tri(LLVMBuilderRef b,
+ struct lp_setup_args *args,
+ const struct lp_setup_variant_key *key)
+{
+ struct lp_build_context bld;
+ LLVMValueRef zoffset, mult;
+ LLVMValueRef z0_new, z1_new, z2_new;
+ LLVMValueRef dzdx0, dzdx, dzdy0, dzdy;
+ LLVMValueRef max, max_value;
+
+ LLVMValueRef one = LLVMConstReal(LLVMFloatType(), 1.0);
+ LLVMValueRef zero = LLVMConstReal(LLVMFloatType(), 0.0);
+
+ /* edge vectors: e = v0 - v2, f = v1 - v2 */
+ LLVMValueRef v0_x = vert_attrib(b, args->v0, 0, 0, "v0_x");
+ LLVMValueRef v1_x = vert_attrib(b, args->v1, 0, 0, "v1_x");
+ LLVMValueRef v2_x = vert_attrib(b, args->v2, 0, 0, "v2_x");
+ LLVMValueRef v0_y = vert_attrib(b, args->v0, 0, 1, "v0_y");
+ LLVMValueRef v1_y = vert_attrib(b, args->v1, 0, 1, "v1_y");
+ LLVMValueRef v2_y = vert_attrib(b, args->v2, 0, 1, "v2_y");
+ LLVMValueRef v0_z = vert_attrib(b, args->v0, 0, 2, "v0_z");
+ LLVMValueRef v1_z = vert_attrib(b, args->v1, 0, 2, "v1_z");
+ LLVMValueRef v2_z = vert_attrib(b, args->v2, 0, 2, "v2_z");
+
+ /* edge vectors: e = v0 - v2, f = v1 - v2 */
+ LLVMValueRef dx02 = LLVMBuildFSub(b, v0_x, v2_x, "dx02");
+ LLVMValueRef dy02 = LLVMBuildFSub(b, v0_y, v2_y, "dy02");
+ LLVMValueRef dz02 = LLVMBuildFSub(b, v0_z, v2_z, "dz02");
+ LLVMValueRef dx12 = LLVMBuildFSub(b, v1_x, v2_x, "dx12");
+ LLVMValueRef dy12 = LLVMBuildFSub(b, v1_y, v2_y, "dy12");
+ LLVMValueRef dz12 = LLVMBuildFSub(b, v1_z, v2_z, "dz12");
+
+ /* det = cross(e,f).z */
+ LLVMValueRef dx02_dy12 = LLVMBuildFMul(b, dx02, dy12, "dx02_dy12");
+ LLVMValueRef dy02_dx12 = LLVMBuildFMul(b, dy02, dx12, "dy02_dx12");
+ LLVMValueRef det = LLVMBuildFSub(b, dx02_dy12, dy02_dx12, "det");
+ LLVMValueRef inv_det = LLVMBuildFDiv(b, one, det, "inv_det");
+
+ /* (res1,res2) = cross(e,f).xy */
+ LLVMValueRef dy02_dz12 = LLVMBuildFMul(b, dy02, dz12, "dy02_dz12");
+ LLVMValueRef dz02_dy12 = LLVMBuildFMul(b, dz02, dy12, "dz02_dy12");
+ LLVMValueRef dz02_dx12 = LLVMBuildFMul(b, dz02, dx12, "dz02_dx12");
+ LLVMValueRef dx02_dz12 = LLVMBuildFMul(b, dx02, dz12, "dx02_dz12");
+ LLVMValueRef res1 = LLVMBuildFSub(b, dy02_dz12, dz02_dy12, "res1");
+ LLVMValueRef res2 = LLVMBuildFSub(b, dz02_dx12, dx02_dz12, "res2");
+
+ /* dzdx = fabsf(res1 * inv_det), dydx = fabsf(res2 * inv_det)*/
+ lp_build_context_init(&bld, b, lp_type_float(32));
+ dzdx0 = LLVMBuildFMul(b, res1, inv_det, "dzdx");
+ dzdx = lp_build_abs(&bld, dzdx0);
+ dzdy0 = LLVMBuildFMul(b, res2, inv_det, "dzdy");
+ dzdy = lp_build_abs(&bld, dzdy0);
+
+ /* zoffset = offset->units + MAX2(dzdx, dzdy) * offset->scale */
+ max = LLVMBuildFCmp(b, LLVMRealUGT, dzdx, dzdy, "");
+ max_value = LLVMBuildSelect(b, max, dzdx, dzdy, "max");
+
+ mult = LLVMBuildFMul(b, max_value, LLVMConstReal(LLVMFloatType(), key->scale), "");
+ zoffset = LLVMBuildFAdd(b, LLVMConstReal(LLVMFloatType(), key->units), mult, "zoffset");
+
+ /* clamp and do offset */
+ z0_new = vert_clamp(b, LLVMBuildFAdd(b, v0_z, zoffset, ""), zero, one);
+ z1_new = vert_clamp(b, LLVMBuildFAdd(b, v1_z, zoffset, ""), zero, one);
+ z2_new = vert_clamp(b, LLVMBuildFAdd(b, v2_z, zoffset, ""), zero, one);
+
+ /* insert into args->a0.z, a1.z, a2.z:
+ */
+ args->v0a = LLVMBuildInsertElement(b, args->v0a, z0_new, LLVMConstInt(LLVMInt32Type(), 2, 0), "");
+ args->v1a = LLVMBuildInsertElement(b, args->v1a, z1_new, LLVMConstInt(LLVMInt32Type(), 2, 0), "");
+ args->v2a = LLVMBuildInsertElement(b, args->v2a, z2_new, LLVMConstInt(LLVMInt32Type(), 2, 0), "");
+}
+
+static void
+load_attribute(LLVMBuilderRef b,
+ struct lp_setup_args *args,
+ const struct lp_setup_variant_key *key,
+ unsigned slot,
+ unsigned vert_attr)
+{
+ LLVMValueRef idx = LLVMConstInt(LLVMInt32Type(), vert_attr, 0);
+
+ /* Load the vertex data
+ */
+ args->v0a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx, 1, ""), "v0a");
+ args->v1a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx, 1, ""), "v1a");
+ args->v2a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx, 1, ""), "v2a");
+
+
+ /* Potentially modify it according to twoside, offset, etc:
+ */
+ if (slot == 0 && (key->scale != 0.0f || key->units != 0.0f)) {
+ lp_do_offset_tri(b, args, key);
+ }
+
+ if (key->twoside && slot == key->color_slot) {
+ lp_twoside(b, args, key);
+ }
+}
+
static void
emit_coef4( LLVMBuilderRef b,
struct lp_setup_args *args,
static void
emit_linear_coef( LLVMBuilderRef b,
struct lp_setup_args *args,
- unsigned slot,
- unsigned vert_attr)
+ unsigned slot)
{
- LLVMValueRef idx = LLVMConstInt(LLVMInt32Type(), vert_attr, 0);
-
- LLVMValueRef a0 = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx, 1, ""), "v0a");
- LLVMValueRef a1 = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx, 1, ""), "v1a");
- LLVMValueRef a2 = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx, 1, ""), "v2a");
-
- emit_coef4(b, args, slot, a0, a1, a2);
+ /* nothing to do anymore */
+ emit_coef4(b,
+ args, slot,
+ args->v0a,
+ args->v1a,
+ args->v2a);
}
-
/**
* Compute a0, dadx and dady for a perspective-corrected interpolant,
* for a triangle.
static void
emit_perspective_coef( LLVMBuilderRef b,
struct lp_setup_args *args,
- unsigned slot,
- unsigned vert_attr)
+ unsigned slot)
{
/* premultiply by 1/w (v[0][3] is always 1/w):
*/
- LLVMValueRef idx = LLVMConstInt(LLVMInt32Type(), vert_attr, 0);
-
- LLVMValueRef v0a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx, 1, ""), "v0a");
- LLVMValueRef v1a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx, 1, ""), "v1a");
- LLVMValueRef v2a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx, 1, ""), "v2a");
-
LLVMValueRef v0_oow = vec4f_from_scalar(b, vert_attrib(b, args->v0, 0, 3, ""), "v0_oow");
LLVMValueRef v1_oow = vec4f_from_scalar(b, vert_attrib(b, args->v1, 0, 3, ""), "v1_oow");
LLVMValueRef v2_oow = vec4f_from_scalar(b, vert_attrib(b, args->v2, 0, 3, ""), "v2_oow");
- LLVMValueRef v0_oow_v0a = LLVMBuildFMul(b, v0a, v0_oow, "v0_oow_v0a");
- LLVMValueRef v1_oow_v1a = LLVMBuildFMul(b, v1a, v1_oow, "v1_oow_v1a");
- LLVMValueRef v2_oow_v2a = LLVMBuildFMul(b, v2a, v2_oow, "v2_oow_v2a");
+ LLVMValueRef v0_oow_v0a = LLVMBuildFMul(b, args->v0a, v0_oow, "v0_oow_v0a");
+ LLVMValueRef v1_oow_v1a = LLVMBuildFMul(b, args->v1a, v1_oow, "v1_oow_v1a");
+ LLVMValueRef v2_oow_v2a = LLVMBuildFMul(b, args->v2a, v2_oow, "v2_oow_v2a");
emit_coef4(b, args, slot, v0_oow_v0a, v1_oow_v1a, v2_oow_v2a);
}
static void
emit_position_coef( LLVMBuilderRef builder,
struct lp_setup_args *args,
- int slot, int attrib )
+ int slot )
{
- emit_linear_coef(builder, args, slot, attrib);
+ emit_linear_coef(builder, args, slot);
}
/* The internal position input is in slot zero:
*/
- emit_position_coef(builder, args, 0, 0);
+ load_attribute(builder, args, key, 0, 0);
+ emit_position_coef(builder, args, 0);
/* setup interpolation for all the remaining attributes:
*/
for (slot = 0; slot < key->num_inputs; slot++) {
- unsigned vert_attr = key->inputs[slot].src_index;
+
+ if (key->inputs[slot].interp == LP_INTERP_CONSTANT ||
+ key->inputs[slot].interp == LP_INTERP_LINEAR ||
+ key->inputs[slot].interp == LP_INTERP_PERSPECTIVE)
+ load_attribute(builder, args, key, slot, key->inputs[slot].src_index);
switch (key->inputs[slot].interp) {
case LP_INTERP_CONSTANT:
if (key->flatshade_first) {
- emit_constant_coef4(builder, args, slot+1, args->v0, vert_attr);
+ emit_constant_coef4(builder, args, slot+1, args->v0a);
}
else {
- emit_constant_coef4(builder, args, slot+1, args->v2, vert_attr);
+ emit_constant_coef4(builder, args, slot+1, args->v2a);
}
break;
case LP_INTERP_LINEAR:
- emit_linear_coef(builder, args, slot+1, vert_attr);
+ emit_linear_coef(builder, args, slot+1);
break;
case LP_INTERP_PERSPECTIVE:
- emit_perspective_coef(builder, args, slot+1, vert_attr);
+ emit_perspective_coef(builder, args, slot+1);
break;
case LP_INTERP_POSITION:
args->y0_center = vec4f_from_scalar(b, y0_center, "y0_center_4f");
}
-static void
-lp_twoside(LLVMBuilderRef b,
- struct lp_setup_args *args,
- const struct lp_setup_variant_key *key)
-{
- struct lp_build_if_state if_state;
-
- LLVMValueRef a0_old, a1_old, a2_old;
- LLVMValueRef a0_new, a1_new, a2_new;
-
- LLVMValueRef idx1 = LLVMConstInt(LLVMInt32Type(), key->color_slot, 0);
- LLVMValueRef idx2 = LLVMConstInt(LLVMInt32Type(), key->bcolor_slot, 0);
-
- LLVMValueRef facing = args->facing;
- LLVMValueRef front_facing = LLVMBuildICmp(b, LLVMIntEQ, facing, LLVMConstInt(LLVMInt32Type(), 0, 0), ""); /** need i1 for if condition */
-
- lp_build_if(&if_state, b, front_facing);
- {
- /* swap the front and back attrib values */
- a0_old = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx1, 1, ""), "v0a");
- a1_old = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx1, 1, ""), "v1a");
- a2_old = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx1, 1, ""), "v2a");
-
- a0_new = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx2, 1, ""), "v0a");
- a1_new = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx2, 1, ""), "v1a");
- a2_new = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx2, 1, ""), "v2a");
-
- LLVMBuildStore(b, a0_new, LLVMBuildGEP(b, args->v0, &idx1, 1, ""));
- LLVMBuildStore(b, a1_new, LLVMBuildGEP(b, args->v1, &idx1, 1, ""));
- LLVMBuildStore(b, a2_new, LLVMBuildGEP(b, args->v2, &idx1, 1, ""));
- }
- lp_build_endif(&if_state);
-
-}
-
-static void
-lp_do_offset_tri(LLVMBuilderRef b,
- struct lp_setup_args *args,
- const struct lp_setup_variant_key *key)
-{
- struct lp_build_context bld;
- LLVMValueRef zoffset, mult;
- LLVMValueRef z0_new, z1_new, z2_new;
- LLVMValueRef dzdx0, dzdx, dzdy0, dzdy;
- LLVMValueRef max, max_value;
-
- LLVMValueRef idx[2];
- LLVMValueRef one = LLVMConstReal(LLVMFloatType(), 1.0);
- LLVMValueRef zero = LLVMConstReal(LLVMFloatType(), 0.0);
-
- /* edge vectors: e = v0 - v2, f = v1 - v2 */
- LLVMValueRef v0_x = vert_attrib(b, args->v0, 0, 0, "v0_x");
- LLVMValueRef v1_x = vert_attrib(b, args->v1, 0, 0, "v1_x");
- LLVMValueRef v2_x = vert_attrib(b, args->v2, 0, 0, "v2_x");
- LLVMValueRef v0_y = vert_attrib(b, args->v0, 0, 1, "v0_y");
- LLVMValueRef v1_y = vert_attrib(b, args->v1, 0, 1, "v1_y");
- LLVMValueRef v2_y = vert_attrib(b, args->v2, 0, 1, "v2_y");
- LLVMValueRef v0_z = vert_attrib(b, args->v0, 0, 2, "v0_z");
- LLVMValueRef v1_z = vert_attrib(b, args->v1, 0, 2, "v1_z");
- LLVMValueRef v2_z = vert_attrib(b, args->v2, 0, 2, "v2_z");
-
- /* edge vectors: e = v0 - v2, f = v1 - v2 */
- LLVMValueRef dx02 = LLVMBuildFSub(b, v0_x, v2_x, "dx02");
- LLVMValueRef dy02 = LLVMBuildFSub(b, v0_y, v2_y, "dy02");
- LLVMValueRef dz02 = LLVMBuildFSub(b, v0_z, v2_z, "dz02");
- LLVMValueRef dx12 = LLVMBuildFSub(b, v1_x, v2_x, "dx12");
- LLVMValueRef dy12 = LLVMBuildFSub(b, v1_y, v2_y, "dy12");
- LLVMValueRef dz12 = LLVMBuildFSub(b, v1_z, v2_z, "dz12");
-
- /* det = cross(e,f).z */
- LLVMValueRef dx02_dy12 = LLVMBuildFMul(b, dx02, dy12, "dx02_dy12");
- LLVMValueRef dy02_dx12 = LLVMBuildFMul(b, dy02, dx12, "dy02_dx12");
- LLVMValueRef det = LLVMBuildFSub(b, dx02_dy12, dy02_dx12, "det");
- LLVMValueRef inv_det = LLVMBuildFDiv(b, one, det, "inv_det");
-
- /* (res1,res2) = cross(e,f).xy */
- LLVMValueRef dy02_dz12 = LLVMBuildFMul(b, dy02, dz12, "dy02_dz12");
- LLVMValueRef dz02_dy12 = LLVMBuildFMul(b, dz02, dy12, "dz02_dy12");
- LLVMValueRef dz02_dx12 = LLVMBuildFMul(b, dz02, dx12, "dz02_dx12");
- LLVMValueRef dx02_dz12 = LLVMBuildFMul(b, dx02, dz12, "dx02_dz12");
- LLVMValueRef res1 = LLVMBuildFSub(b, dy02_dz12, dz02_dy12, "res1");
- LLVMValueRef res2 = LLVMBuildFSub(b, dz02_dx12, dx02_dz12, "res2");
-
- /* dzdx = fabsf(res1 * inv_det), dydx = fabsf(res2 * inv_det)*/
- lp_build_context_init(&bld, b, lp_type_float(32));
- dzdx0 = LLVMBuildFMul(b, res1, inv_det, "dzdx");
- dzdx = lp_build_abs(&bld, dzdx0);
- dzdy0 = LLVMBuildFMul(b, res2, inv_det, "dzdy");
- dzdy = lp_build_abs(&bld, dzdy0);
-
- /* zoffset = offset->units + MAX2(dzdx, dzdy) * offset->scale */
- max = LLVMBuildFCmp(b, LLVMRealUGT, dzdx, dzdy, "");
- max_value = LLVMBuildSelect(b, max, dzdx, dzdy, "max");
-
- mult = LLVMBuildFMul(b, max_value, LLVMConstReal(LLVMFloatType(), key->scale), "");
- zoffset = LLVMBuildFAdd(b, LLVMConstReal(LLVMFloatType(), key->units), mult, "zoffset");
-
- /* clamp and do offset */
- z0_new = vert_clamp(b, LLVMBuildFAdd(b, v0_z, zoffset, ""), zero, one);
- z1_new = vert_clamp(b, LLVMBuildFAdd(b, v1_z, zoffset, ""), zero, one);
- z2_new = vert_clamp(b, LLVMBuildFAdd(b, v2_z, zoffset, ""), zero, one);
-
- /* store back new offsetted z values */
- idx[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
- idx[1] = LLVMConstInt(LLVMInt32Type(), 2, 0);
- LLVMBuildStore(b, z0_new, LLVMBuildGEP(b, args->v0, idx, 2, ""));
- LLVMBuildStore(b, z1_new, LLVMBuildGEP(b, args->v1, idx, 2, ""));
- LLVMBuildStore(b, z2_new, LLVMBuildGEP(b, args->v2, idx, 2, ""));
-
-}
-
-
/**
* Generate the runtime callable function for the coefficient calculation.
*
set_noalias(builder, variant->function, arg_types, Elements(arg_types));
init_args(builder, &args, variant);
- if (variant->key.twoside){
- lp_twoside(builder, &args, &variant->key);
- }
- if (variant->key.scale || variant->key.units){
- lp_do_offset_tri(builder, &args, &variant->key);
- }
emit_tri_coef(builder, &variant->key, &args);
lp_emit_emms(builder);
projects / mesa.git / commitdiff