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gallivm: Use varilables instead of Phis for cubemap selection.

This commit is contained in:
José Fonseca 2010-10-09 19:53:21 +01:00
parent cc40abad51
commit ea7b49028b
1 changed files with 26 additions and 36 deletions
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62
src/gallium/auxiliary/gallivm/lp_bld_sample.c
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@ -927,21 +927,15 @@ lp_build_cube_lookup(struct lp_build_sample_context *bld,
{
struct lp_build_flow_context *flow_ctx;
struct lp_build_if_state if_ctx;
LLVMValueRef face_s_var;
LLVMValueRef face_t_var;
LLVMValueRef face_var;
flow_ctx = lp_build_flow_create(bld->builder);
lp_build_flow_scope_begin(flow_ctx);
*face_s = bld->coord_bld.undef;
*face_t = bld->coord_bld.undef;
*face = bld->int_bld.undef;
lp_build_name(*face_s, "face_s");
lp_build_name(*face_t, "face_t");
lp_build_name(*face, "face");
lp_build_flow_scope_declare(flow_ctx, face_s);
lp_build_flow_scope_declare(flow_ctx, face_t);
lp_build_flow_scope_declare(flow_ctx, face);
face_s_var = lp_build_alloca(bld->builder, bld->coord_bld.vec_type, "face_s_var");
face_t_var = lp_build_alloca(bld->builder, bld->coord_bld.vec_type, "face_t_var");
face_var = lp_build_alloca(bld->builder, bld->int_bld.vec_type, "face_var");
lp_build_if(&if_ctx, flow_ctx, bld->builder, arx_ge_ary_arz);
{
@ -953,57 +947,53 @@ lp_build_cube_lookup(struct lp_build_sample_context *bld,
*face = lp_build_cube_face(bld, rx,
PIPE_TEX_FACE_POS_X,
PIPE_TEX_FACE_NEG_X);
LLVMBuildStore(bld->builder, *face_s, face_s_var);
LLVMBuildStore(bld->builder, *face_t, face_t_var);
LLVMBuildStore(bld->builder, *face, face_var);
}
lp_build_else(&if_ctx);
{
struct lp_build_flow_context *flow_ctx2;
struct lp_build_if_state if_ctx2;
LLVMValueRef face_s2 = bld->coord_bld.undef;
LLVMValueRef face_t2 = bld->coord_bld.undef;
LLVMValueRef face2 = bld->int_bld.undef;
flow_ctx2 = lp_build_flow_create(bld->builder);
lp_build_flow_scope_begin(flow_ctx2);
lp_build_flow_scope_declare(flow_ctx2, &face_s2);
lp_build_flow_scope_declare(flow_ctx2, &face_t2);
lp_build_flow_scope_declare(flow_ctx2, &face2);
ary_ge_arx_arz = LLVMBuildAnd(bld->builder, ary_ge_arx, ary_ge_arz, "");
lp_build_if(&if_ctx2, flow_ctx2, bld->builder, ary_ge_arx_arz);
lp_build_if(&if_ctx2, flow_ctx, bld->builder, ary_ge_arx_arz);
{
/* +/- Y face */
LLVMValueRef sign = lp_build_sgn(float_bld, ry);
LLVMValueRef ima = lp_build_cube_ima(coord_bld, t);
face_s2 = lp_build_cube_coord(coord_bld, NULL, -1, s, ima);
face_t2 = lp_build_cube_coord(coord_bld, sign, -1, r, ima);
face2 = lp_build_cube_face(bld, ry,
*face_s = lp_build_cube_coord(coord_bld, NULL, -1, s, ima);
*face_t = lp_build_cube_coord(coord_bld, sign, -1, r, ima);
*face = lp_build_cube_face(bld, ry,
PIPE_TEX_FACE_POS_Y,
PIPE_TEX_FACE_NEG_Y);
LLVMBuildStore(bld->builder, *face_s, face_s_var);
LLVMBuildStore(bld->builder, *face_t, face_t_var);
LLVMBuildStore(bld->builder, *face, face_var);
}
lp_build_else(&if_ctx2);
{
/* +/- Z face */
LLVMValueRef sign = lp_build_sgn(float_bld, rz);
LLVMValueRef ima = lp_build_cube_ima(coord_bld, r);
face_s2 = lp_build_cube_coord(coord_bld, sign, -1, s, ima);
face_t2 = lp_build_cube_coord(coord_bld, NULL, +1, t, ima);
face2 = lp_build_cube_face(bld, rz,
*face_s = lp_build_cube_coord(coord_bld, sign, -1, s, ima);
*face_t = lp_build_cube_coord(coord_bld, NULL, +1, t, ima);
*face = lp_build_cube_face(bld, rz,
PIPE_TEX_FACE_POS_Z,
PIPE_TEX_FACE_NEG_Z);
LLVMBuildStore(bld->builder, *face_s, face_s_var);
LLVMBuildStore(bld->builder, *face_t, face_t_var);
LLVMBuildStore(bld->builder, *face, face_var);
}
lp_build_endif(&if_ctx2);
lp_build_flow_scope_end(flow_ctx2);
lp_build_flow_destroy(flow_ctx2);
*face_s = face_s2;
*face_t = face_t2;
*face = face2;
}
lp_build_endif(&if_ctx);
lp_build_flow_scope_end(flow_ctx);
lp_build_flow_destroy(flow_ctx);
*face_s = LLVMBuildLoad(bld->builder, face_s_var, "face_s");
*face_t = LLVMBuildLoad(bld->builder, face_t_var, "face_t");
*face = LLVMBuildLoad(bld->builder, face_var, "face");
}
}