diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe')
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_state_setup.c | 314 |
1 files changed, 159 insertions, 155 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_state_setup.c b/src/gallium/drivers/llvmpipe/lp_state_setup.c index 03b411a3364..c3c2c8bd6d1 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_setup.c +++ b/src/gallium/drivers/llvmpipe/lp_state_setup.c @@ -76,7 +76,13 @@ struct lp_setup_args 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) @@ -152,16 +158,11 @@ static 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); } @@ -214,6 +215,132 @@ vert_clamp(LLVMBuilderRef b, 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, @@ -260,20 +387,17 @@ emit_coef4( LLVMBuilderRef b, 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. @@ -285,24 +409,17 @@ emit_linear_coef( LLVMBuilderRef b, 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); } @@ -311,9 +428,9 @@ emit_perspective_coef( LLVMBuilderRef b, 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); } @@ -331,29 +448,34 @@ emit_tri_coef( LLVMBuilderRef builder, /* 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: @@ -489,118 +611,6 @@ init_args(LLVMBuilderRef b, 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. * @@ -685,12 +695,6 @@ generate_setup_variant(struct llvmpipe_screen *screen, 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); |