Module: Mesa
Branch: master
Commit: a0ce09b4b2a3063e49a02de3d12096cf462d10a3
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=a0ce09b4b2a3063e49a02de3d12096cf462d10a3
Author: Nicolai Hähnle <nicolai.haeh...@amd.com>
Date: Tue Jan 10 15:35:27 2017 +0100
amd/common: unify cube map coordinate handling between radeonsi and radv
Code is taken from a combination of radv (for the more basic functions,
to avoid gallivm dependencies) and radeonsi (for the new and improved
derivative calculations).
v2: add 0.5 offset to tex coords only after derivative calculation
v3:
- really only touch the first three coordinates
- rebase on the removal of the 1.5 --> 0.5 offset change
Reviewed-by: Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl> (v2)
Reviewed-by: Marek Olšák <marek.ol...@amd.com>
---
src/amd/common/ac_llvm_util.c | 364 +++++++++++++++++++++
src/amd/common/ac_llvm_util.h | 57 ++++
src/amd/common/ac_nir_to_llvm.c | 204 +-----------
src/gallium/drivers/radeonsi/si_shader.c | 6 +-
src/gallium/drivers/radeonsi/si_shader_internal.h | 2 +
.../drivers/radeonsi/si_shader_tgsi_setup.c | 4 +
6 files changed, 440 insertions(+), 197 deletions(-)
diff --git a/src/amd/common/ac_llvm_util.c b/src/amd/common/ac_llvm_util.c
index a8408dd..770e3bd 100644
--- a/src/amd/common/ac_llvm_util.c
+++ b/src/amd/common/ac_llvm_util.c
@@ -32,6 +32,9 @@
#include <assert.h>
#include <stdio.h>
+#include "util/bitscan.h"
+#include "util/macros.h"
+
static void ac_init_llvm_target()
{
#if HAVE_LLVM < 0x0307
@@ -140,3 +143,364 @@ LLVMTargetMachineRef ac_create_target_machine(enum
radeon_family family)
return tm;
}
+
+/* Initialize module-independent parts of the context.
+ *
+ * The caller is responsible for initializing ctx::module and ctx::builder.
+ */
+void
+ac_llvm_context_init(struct ac_llvm_context *ctx, LLVMContextRef context)
+{
+ LLVMValueRef args[1];
+
+ ctx->context = context;
+ ctx->module = NULL;
+ ctx->builder = NULL;
+
+ ctx->i32 = LLVMIntTypeInContext(ctx->context, 32);
+ ctx->f32 = LLVMFloatTypeInContext(ctx->context);
+
+ ctx->fpmath_md_kind = LLVMGetMDKindIDInContext(ctx->context, "fpmath",
6);
+
+ args[0] = LLVMConstReal(ctx->f32, 2.5);
+ ctx->fpmath_md_2p5_ulp = LLVMMDNodeInContext(ctx->context, args, 1);
+}
+
+#if HAVE_LLVM < 0x0400
+static LLVMAttribute ac_attr_to_llvm_attr(enum ac_func_attr attr)
+{
+ switch (attr) {
+ case AC_FUNC_ATTR_ALWAYSINLINE: return LLVMAlwaysInlineAttribute;
+ case AC_FUNC_ATTR_BYVAL: return LLVMByValAttribute;
+ case AC_FUNC_ATTR_INREG: return LLVMInRegAttribute;
+ case AC_FUNC_ATTR_NOALIAS: return LLVMNoAliasAttribute;
+ case AC_FUNC_ATTR_NOUNWIND: return LLVMNoUnwindAttribute;
+ case AC_FUNC_ATTR_READNONE: return LLVMReadNoneAttribute;
+ case AC_FUNC_ATTR_READONLY: return LLVMReadOnlyAttribute;
+ default:
+ fprintf(stderr, "Unhandled function attribute: %x\n", attr);
+ return 0;
+ }
+}
+
+#else
+
+static const char *attr_to_str(enum ac_func_attr attr)
+{
+ switch (attr) {
+ case AC_FUNC_ATTR_ALWAYSINLINE: return "alwaysinline";
+ case AC_FUNC_ATTR_BYVAL: return "byval";
+ case AC_FUNC_ATTR_INREG: return "inreg";
+ case AC_FUNC_ATTR_NOALIAS: return "noalias";
+ case AC_FUNC_ATTR_NOUNWIND: return "nounwind";
+ case AC_FUNC_ATTR_READNONE: return "readnone";
+ case AC_FUNC_ATTR_READONLY: return "readonly";
+ default:
+ fprintf(stderr, "Unhandled function attribute: %x\n", attr);
+ return 0;
+ }
+}
+
+#endif
+
+void
+ac_add_function_attr(LLVMValueRef function,
+ int attr_idx,
+ enum ac_func_attr attr)
+{
+
+#if HAVE_LLVM < 0x0400
+ LLVMAttribute llvm_attr = ac_attr_to_llvm_attr(attr);
+ if (attr_idx == -1) {
+ LLVMAddFunctionAttr(function, llvm_attr);
+ } else {
+ LLVMAddAttribute(LLVMGetParam(function, attr_idx - 1), llvm_attr);
+ }
+#else
+ LLVMContextRef context =
LLVMGetModuleContext(LLVMGetGlobalParent(function));
+ const char *attr_name = attr_to_str(attr);
+ unsigned kind_id = LLVMGetEnumAttributeKindForName(attr_name,
+ strlen(attr_name));
+ LLVMAttributeRef llvm_attr = LLVMCreateEnumAttribute(context, kind_id, 0);
+ LLVMAddAttributeAtIndex(function, attr_idx, llvm_attr);
+#endif
+}
+
+LLVMValueRef
+ac_emit_llvm_intrinsic(struct ac_llvm_context *ctx, const char *name,
+ LLVMTypeRef return_type, LLVMValueRef *params,
+ unsigned param_count, unsigned attrib_mask)
+{
+ LLVMValueRef function;
+
+ function = LLVMGetNamedFunction(ctx->module, name);
+ if (!function) {
+ LLVMTypeRef param_types[32], function_type;
+ unsigned i;
+
+ assert(param_count <= 32);
+
+ for (i = 0; i < param_count; ++i) {
+ assert(params[i]);
+ param_types[i] = LLVMTypeOf(params[i]);
+ }
+ function_type =
+ LLVMFunctionType(return_type, param_types, param_count, 0);
+ function = LLVMAddFunction(ctx->module, name, function_type);
+
+ LLVMSetFunctionCallConv(function, LLVMCCallConv);
+ LLVMSetLinkage(function, LLVMExternalLinkage);
+
+ attrib_mask |= AC_FUNC_ATTR_NOUNWIND;
+ while (attrib_mask) {
+ enum ac_func_attr attr = 1u << u_bit_scan(&attrib_mask);
+ ac_add_function_attr(function, -1, attr);
+ }
+ }
+ return LLVMBuildCall(ctx->builder, function, params, param_count, "");
+}
+
+LLVMValueRef
+ac_build_gather_values_extended(struct ac_llvm_context *ctx,
+ LLVMValueRef *values,
+ unsigned value_count,
+ unsigned value_stride,
+ bool load)
+{
+ LLVMBuilderRef builder = ctx->builder;
+ LLVMValueRef vec;
+ unsigned i;
+
+
+ if (value_count == 1) {
+ if (load)
+ return LLVMBuildLoad(builder, values[0], "");
+ return values[0];
+ } else if (!value_count)
+ unreachable("value_count is 0");
+
+ for (i = 0; i < value_count; i++) {
+ LLVMValueRef value = values[i * value_stride];
+ if (load)
+ value = LLVMBuildLoad(builder, value, "");
+
+ if (!i)
+ vec = LLVMGetUndef( LLVMVectorType(LLVMTypeOf(value),
value_count));
+ LLVMValueRef index = LLVMConstInt(ctx->i32, i, false);
+ vec = LLVMBuildInsertElement(builder, vec, value, index, "");
+ }
+ return vec;
+}
+
+LLVMValueRef
+ac_build_gather_values(struct ac_llvm_context *ctx,
+ LLVMValueRef *values,
+ unsigned value_count)
+{
+ return ac_build_gather_values_extended(ctx, values, value_count, 1,
false);
+}
+
+LLVMValueRef
+ac_emit_fdiv(struct ac_llvm_context *ctx,
+ LLVMValueRef num,
+ LLVMValueRef den)
+{
+ LLVMValueRef ret = LLVMBuildFDiv(ctx->builder, num, den, "");
+
+ if (!LLVMIsConstant(ret))
+ LLVMSetMetadata(ret, ctx->fpmath_md_kind,
ctx->fpmath_md_2p5_ulp);
+ return ret;
+}
+
+/* Coordinates for cube map selection. sc, tc, and ma are as in Table 8.27
+ * of the OpenGL 4.5 (Compatibility Profile) specification, except ma is
+ * already multiplied by two. id is the cube face number.
+ */
+struct cube_selection_coords {
+ LLVMValueRef stc[2];
+ LLVMValueRef ma;
+ LLVMValueRef id;
+};
+
+static void
+build_cube_intrinsic(struct ac_llvm_context *ctx,
+ LLVMValueRef in[3],
+ struct cube_selection_coords *out)
+{
+ LLVMBuilderRef builder = ctx->builder;
+
+ if (HAVE_LLVM >= 0x0309) {
+ LLVMTypeRef f32 = ctx->f32;
+
+ out->stc[1] = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubetc",
+ f32, in, 3, AC_FUNC_ATTR_READNONE);
+ out->stc[0] = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubesc",
+ f32, in, 3, AC_FUNC_ATTR_READNONE);
+ out->ma = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubema",
+ f32, in, 3, AC_FUNC_ATTR_READNONE);
+ out->id = ac_emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubeid",
+ f32, in, 3, AC_FUNC_ATTR_READNONE);
+ } else {
+ LLVMValueRef c[4] = {
+ in[0],
+ in[1],
+ in[2],
+ LLVMGetUndef(LLVMTypeOf(in[0]))
+ };
+ LLVMValueRef vec = ac_build_gather_values(ctx, c, 4);
+
+ LLVMValueRef tmp =
+ ac_emit_llvm_intrinsic(ctx, "llvm.AMDGPU.cube",
+ LLVMTypeOf(vec), &vec, 1,
+ AC_FUNC_ATTR_READNONE);
+
+ out->stc[1] = LLVMBuildExtractElement(builder, tmp,
+ LLVMConstInt(ctx->i32, 0, 0), "");
+ out->stc[0] = LLVMBuildExtractElement(builder, tmp,
+ LLVMConstInt(ctx->i32, 1, 0), "");
+ out->ma = LLVMBuildExtractElement(builder, tmp,
+ LLVMConstInt(ctx->i32, 2, 0), "");
+ out->id = LLVMBuildExtractElement(builder, tmp,
+ LLVMConstInt(ctx->i32, 3, 0), "");
+ }
+}
+
+/**
+ * Build a manual selection sequence for cube face sc/tc coordinates and
+ * major axis vector (multiplied by 2 for consistency) for the given
+ * vec3 \p coords, for the face implied by \p selcoords.
+ *
+ * For the major axis, we always adjust the sign to be in the direction of
+ * selcoords.ma; i.e., a positive out_ma means that coords is pointed towards
+ * the selcoords major axis.
+ */
+static void build_cube_select(LLVMBuilderRef builder,
+ const struct cube_selection_coords *selcoords,
+ const LLVMValueRef *coords,
+ LLVMValueRef *out_st,
+ LLVMValueRef *out_ma)
+{
+ LLVMTypeRef f32 = LLVMTypeOf(coords[0]);
+ LLVMValueRef is_ma_positive;
+ LLVMValueRef sgn_ma;
+ LLVMValueRef is_ma_z, is_not_ma_z;
+ LLVMValueRef is_ma_y;
+ LLVMValueRef is_ma_x;
+ LLVMValueRef sgn;
+ LLVMValueRef tmp;
+
+ is_ma_positive = LLVMBuildFCmp(builder, LLVMRealUGE,
+ selcoords->ma, LLVMConstReal(f32, 0.0), "");
+ sgn_ma = LLVMBuildSelect(builder, is_ma_positive,
+ LLVMConstReal(f32, 1.0), LLVMConstReal(f32, -1.0), "");
+
+ is_ma_z = LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id,
LLVMConstReal(f32, 4.0), "");
+ is_not_ma_z = LLVMBuildNot(builder, is_ma_z, "");
+ is_ma_y = LLVMBuildAnd(builder, is_not_ma_z,
+ LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id,
LLVMConstReal(f32, 2.0), ""), "");
+ is_ma_x = LLVMBuildAnd(builder, is_not_ma_z, LLVMBuildNot(builder,
is_ma_y, ""), "");
+
+ /* Select sc */
+ tmp = LLVMBuildSelect(builder, is_ma_z, coords[2], coords[0], "");
+ sgn = LLVMBuildSelect(builder, is_ma_y, LLVMConstReal(f32, 1.0),
+ LLVMBuildSelect(builder, is_ma_x, sgn_ma,
+ LLVMBuildFNeg(builder, sgn_ma, ""), ""), "");
+ out_st[0] = LLVMBuildFMul(builder, tmp, sgn, "");
+
+ /* Select tc */
+ tmp = LLVMBuildSelect(builder, is_ma_y, coords[2], coords[1], "");
+ sgn = LLVMBuildSelect(builder, is_ma_y, LLVMBuildFNeg(builder, sgn_ma,
""),
+ LLVMConstReal(f32, -1.0), "");
+ out_st[1] = LLVMBuildFMul(builder, tmp, sgn, "");
+
+ /* Select ma */
+ tmp = LLVMBuildSelect(builder, is_ma_z, coords[2],
+ LLVMBuildSelect(builder, is_ma_y, coords[1], coords[0], ""),
"");
+ sgn = LLVMBuildSelect(builder, is_ma_positive,
+ LLVMConstReal(f32, 2.0), LLVMConstReal(f32, -2.0), "");
+ *out_ma = LLVMBuildFMul(builder, tmp, sgn, "");
+}
+
+void
+ac_prepare_cube_coords(struct ac_llvm_context *ctx,
+ bool is_deriv, bool is_array,
+ LLVMValueRef *coords_arg,
+ LLVMValueRef *derivs_arg)
+{
+
+ LLVMBuilderRef builder = ctx->builder;
+ struct cube_selection_coords selcoords;
+ LLVMValueRef coords[3];
+ LLVMValueRef invma;
+
+ build_cube_intrinsic(ctx, coords_arg, &selcoords);
+
+ invma = ac_emit_llvm_intrinsic(ctx, "llvm.fabs.f32",
+ ctx->f32, &selcoords.ma, 1, AC_FUNC_ATTR_READNONE);
+ invma = ac_emit_fdiv(ctx, LLVMConstReal(ctx->f32, 1.0), invma);
+
+ for (int i = 0; i < 2; ++i)
+ coords[i] = LLVMBuildFMul(builder, selcoords.stc[i], invma, "");
+
+ coords[2] = selcoords.id;
+
+ if (is_deriv && derivs_arg) {
+ LLVMValueRef derivs[4];
+ int axis;
+
+ /* Convert cube derivatives to 2D derivatives. */
+ for (axis = 0; axis < 2; axis++) {
+ LLVMValueRef deriv_st[2];
+ LLVMValueRef deriv_ma;
+
+ /* Transform the derivative alongside the texture
+ * coordinate. Mathematically, the correct formula is
+ * as follows. Assume we're projecting onto the +Z face
+ * and denote by dx/dh the derivative of the (original)
+ * X texture coordinate with respect to horizontal
+ * window coordinates. The projection onto the +Z face
+ * plane is:
+ *
+ * f(x,z) = x/z
+ *
+ * Then df/dh = df/dx * dx/dh + df/dz * dz/dh
+ * = 1/z * dx/dh - x/z * 1/z * dz/dh.
+ *
+ * This motivatives the implementation below.
+ *
+ * Whether this actually gives the expected results for
+ * apps that might feed in derivatives obtained via
+ * finite differences is anyone's guess. The OpenGL spec
+ * seems awfully quiet about how textureGrad for cube
+ * maps should be handled.
+ */
+ build_cube_select(builder, &selcoords, &derivs_arg[axis
* 3],
+ deriv_st, &deriv_ma);
+
+ deriv_ma = LLVMBuildFMul(builder, deriv_ma, invma, "");
+
+ for (int i = 0; i < 2; ++i)
+ derivs[axis * 2 + i] =
+ LLVMBuildFSub(builder,
+ LLVMBuildFMul(builder,
deriv_st[i], invma, ""),
+ LLVMBuildFMul(builder,
deriv_ma, coords[i], ""), "");
+ }
+
+ memcpy(derivs_arg, derivs, sizeof(derivs));
+ }
+
+ /* Shift the texture coordinate. This must be applied after the
+ * derivative calculation.
+ */
+ for (int i = 0; i < 2; ++i)
+ coords[i] = LLVMBuildFAdd(builder, coords[i],
LLVMConstReal(ctx->f32, 1.5), "");
+
+ if (is_array) {
+ /* for cube arrays coord.z = coord.w(array_index) * 8 + face */
+ /* coords_arg.w component - array_index for cube arrays */
+ LLVMValueRef tmp = LLVMBuildFMul(ctx->builder, coords_arg[3],
LLVMConstReal(ctx->f32, 8.0), "");
+ coords[2] = LLVMBuildFAdd(ctx->builder, tmp, coords[2], "");
+ }
+
+ memcpy(coords_arg, coords, sizeof(coords));
+}
diff --git a/src/amd/common/ac_llvm_util.h b/src/amd/common/ac_llvm_util.h
index d9ea9bd..802c266 100644
--- a/src/amd/common/ac_llvm_util.h
+++ b/src/amd/common/ac_llvm_util.h
@@ -33,11 +33,68 @@
extern "C" {
#endif
+enum ac_func_attr {
+ AC_FUNC_ATTR_ALWAYSINLINE = (1 << 0),
+ AC_FUNC_ATTR_BYVAL = (1 << 1),
+ AC_FUNC_ATTR_INREG = (1 << 2),
+ AC_FUNC_ATTR_NOALIAS = (1 << 3),
+ AC_FUNC_ATTR_NOUNWIND = (1 << 4),
+ AC_FUNC_ATTR_READNONE = (1 << 5),
+ AC_FUNC_ATTR_READONLY = (1 << 6),
+ AC_FUNC_ATTR_LAST = (1 << 7)
+};
+
+struct ac_llvm_context {
+ LLVMContextRef context;
+ LLVMModuleRef module;
+ LLVMBuilderRef builder;
+
+ LLVMTypeRef i32;
+ LLVMTypeRef f32;
+
+ unsigned fpmath_md_kind;
+ LLVMValueRef fpmath_md_2p5_ulp;
+};
+
LLVMTargetMachineRef ac_create_target_machine(enum radeon_family family);
void ac_add_attr_dereferenceable(LLVMValueRef val, uint64_t bytes);
bool ac_is_sgpr_param(LLVMValueRef param);
+void
+ac_llvm_context_init(struct ac_llvm_context *ctx, LLVMContextRef context);
+
+void
+ac_add_function_attr(LLVMValueRef function,
+ int attr_idx,
+ enum ac_func_attr attr);
+LLVMValueRef
+ac_emit_llvm_intrinsic(struct ac_llvm_context *ctx, const char *name,
+ LLVMTypeRef return_type, LLVMValueRef *params,
+ unsigned param_count, unsigned attrib_mask);
+
+LLVMValueRef
+ac_build_gather_values_extended(struct ac_llvm_context *ctx,
+ LLVMValueRef *values,
+ unsigned value_count,
+ unsigned value_stride,
+ bool load);
+LLVMValueRef
+ac_build_gather_values(struct ac_llvm_context *ctx,
+ LLVMValueRef *values,
+ unsigned value_count);
+
+LLVMValueRef
+ac_emit_fdiv(struct ac_llvm_context *ctx,
+ LLVMValueRef num,
+ LLVMValueRef den);
+
+void
+ac_prepare_cube_coords(struct ac_llvm_context *ctx,
+ bool is_deriv, bool is_array,
+ LLVMValueRef *coords_arg,
+ LLVMValueRef *derivs_arg);
+
#ifdef __cplusplus
}
#endif
diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index bc3a345..ae21be4 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -51,6 +51,7 @@ enum desc_type {
};
struct nir_to_llvm_context {
+ struct ac_llvm_context ac;
const struct ac_nir_compiler_options *options;
struct ac_shader_variant_info *shader_info;
@@ -141,77 +142,6 @@ struct ac_tex_info {
bool has_offset;
};
-enum ac_func_attr {
- AC_FUNC_ATTR_ALWAYSINLINE = (1 << 0),
- AC_FUNC_ATTR_BYVAL = (1 << 1),
- AC_FUNC_ATTR_INREG = (1 << 2),
- AC_FUNC_ATTR_NOALIAS = (1 << 3),
- AC_FUNC_ATTR_NOUNWIND = (1 << 4),
- AC_FUNC_ATTR_READNONE = (1 << 5),
- AC_FUNC_ATTR_READONLY = (1 << 6),
- AC_FUNC_ATTR_LAST = (1 << 7)
-};
-
-#if HAVE_LLVM < 0x0400
-static LLVMAttribute ac_attr_to_llvm_attr(enum ac_func_attr attr)
-{
- switch (attr) {
- case AC_FUNC_ATTR_ALWAYSINLINE: return LLVMAlwaysInlineAttribute;
- case AC_FUNC_ATTR_BYVAL: return LLVMByValAttribute;
- case AC_FUNC_ATTR_INREG: return LLVMInRegAttribute;
- case AC_FUNC_ATTR_NOALIAS: return LLVMNoAliasAttribute;
- case AC_FUNC_ATTR_NOUNWIND: return LLVMNoUnwindAttribute;
- case AC_FUNC_ATTR_READNONE: return LLVMReadNoneAttribute;
- case AC_FUNC_ATTR_READONLY: return LLVMReadOnlyAttribute;
- default:
- fprintf(stderr, "Unhandled function attribute: %x\n", attr);
- return 0;
- }
-}
-
-#else
-
-static const char *attr_to_str(enum ac_func_attr attr)
-{
- switch (attr) {
- case AC_FUNC_ATTR_ALWAYSINLINE: return "alwaysinline";
- case AC_FUNC_ATTR_BYVAL: return "byval";
- case AC_FUNC_ATTR_INREG: return "inreg";
- case AC_FUNC_ATTR_NOALIAS: return "noalias";
- case AC_FUNC_ATTR_NOUNWIND: return "nounwind";
- case AC_FUNC_ATTR_READNONE: return "readnone";
- case AC_FUNC_ATTR_READONLY: return "readonly";
- default:
- fprintf(stderr, "Unhandled function attribute: %x\n", attr);
- return 0;
- }
-}
-
-#endif
-
-static void
-ac_add_function_attr(LLVMValueRef function,
- int attr_idx,
- enum ac_func_attr attr)
-{
-
-#if HAVE_LLVM < 0x0400
- LLVMAttribute llvm_attr = ac_attr_to_llvm_attr(attr);
- if (attr_idx == -1) {
- LLVMAddFunctionAttr(function, llvm_attr);
- } else {
- LLVMAddAttribute(LLVMGetParam(function, attr_idx - 1), llvm_attr);
- }
-#else
- LLVMContextRef context =
LLVMGetModuleContext(LLVMGetGlobalParent(function));
- const char *attr_name = attr_to_str(attr);
- unsigned kind_id = LLVMGetEnumAttributeKindForName(attr_name,
- strlen(attr_name));
- LLVMAttributeRef llvm_attr = LLVMCreateEnumAttribute(context, kind_id, 0);
- LLVMAddAttributeAtIndex(function, attr_idx, llvm_attr);
-#endif
-}
-
static LLVMValueRef
emit_llvm_intrinsic(struct nir_to_llvm_context *ctx, const char *name,
LLVMTypeRef return_type, LLVMValueRef *params,
@@ -3319,130 +3249,6 @@ static void tex_fetch_ptrs(struct nir_to_llvm_context
*ctx,
*fmask_ptr = get_sampler_desc(ctx, instr->texture, DESC_FMASK);
}
-static LLVMValueRef build_cube_intrinsic(struct nir_to_llvm_context *ctx,
- LLVMValueRef *in)
-{
-
- LLVMValueRef v, cube_vec;
-
- if (1) {
- LLVMTypeRef f32 = LLVMTypeOf(in[0]);
- LLVMValueRef out[4];
-
- out[0] = emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubetc",
- f32, in, 3, AC_FUNC_ATTR_READNONE);
- out[1] = emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubesc",
- f32, in, 3, AC_FUNC_ATTR_READNONE);
- out[2] = emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubema",
- f32, in, 3, AC_FUNC_ATTR_READNONE);
- out[3] = emit_llvm_intrinsic(ctx, "llvm.amdgcn.cubeid",
- f32, in, 3, AC_FUNC_ATTR_READNONE);
-
- return build_gather_values(ctx, out, 4);
- } else {
- LLVMValueRef c[4];
- c[0] = in[0];
- c[1] = in[1];
- c[2] = in[2];
- c[3] = LLVMGetUndef(LLVMTypeOf(in[0]));
- cube_vec = build_gather_values(ctx, c, 4);
- v = emit_llvm_intrinsic(ctx, "llvm.AMDGPU.cube",
LLVMTypeOf(cube_vec),
- &cube_vec, 1, AC_FUNC_ATTR_READNONE);
- }
- return v;
-}
-
-static void cube_to_2d_coords(struct nir_to_llvm_context *ctx,
- LLVMValueRef *in, LLVMValueRef *out)
-{
- LLVMValueRef coords[4];
- LLVMValueRef mad_args[3];
- LLVMValueRef v;
- LLVMValueRef tmp;
- int i;
-
- v = build_cube_intrinsic(ctx, in);
- for (i = 0; i < 4; i++)
- coords[i] = LLVMBuildExtractElement(ctx->builder, v,
- LLVMConstInt(ctx->i32, i,
false), "");
-
- coords[2] = emit_llvm_intrinsic(ctx, "llvm.fabs.f32", ctx->f32,
- &coords[2], 1, AC_FUNC_ATTR_READNONE);
- coords[2] = emit_fdiv(ctx, ctx->f32one, coords[2]);
-
- mad_args[1] = coords[2];
- mad_args[2] = LLVMConstReal(ctx->f32, 1.5);
- mad_args[0] = coords[0];
-
- /* emit MAD */
- tmp = LLVMBuildFMul(ctx->builder, mad_args[0], mad_args[1], "");
- coords[0] = LLVMBuildFAdd(ctx->builder, tmp, mad_args[2], "");
-
- mad_args[0] = coords[1];
-
- /* emit MAD */
- tmp = LLVMBuildFMul(ctx->builder, mad_args[0], mad_args[1], "");
- coords[1] = LLVMBuildFAdd(ctx->builder, tmp, mad_args[2], "");
-
- /* apply xyz = yxw swizzle to cooords */
- out[0] = coords[1];
- out[1] = coords[0];
- out[2] = coords[3];
-}
-
-static void emit_prepare_cube_coords(struct nir_to_llvm_context *ctx,
- LLVMValueRef *coords_arg, int num_coords,
- bool is_deriv,
- bool is_array, LLVMValueRef *derivs_arg)
-{
- LLVMValueRef coords[4];
- int i;
- cube_to_2d_coords(ctx, coords_arg, coords);
-
- if (is_deriv && derivs_arg) {
- LLVMValueRef derivs[4];
- int axis;
-
- /* Convert cube derivatives to 2D derivatives. */
- for (axis = 0; axis < 2; axis++) {
- LLVMValueRef shifted_cube_coords[4], shifted_coords[4];
-
- /* Shift the cube coordinates by the derivatives to get
- * the cube coordinates of the "neighboring pixel".
- */
- for (i = 0; i < 3; i++)
- shifted_cube_coords[i] =
- LLVMBuildFAdd(ctx->builder,
coords_arg[i],
- derivs_arg[axis*3+i], "");
- shifted_cube_coords[3] = LLVMGetUndef(ctx->f32);
-
- /* Project the shifted cube coordinates onto the face.
*/
- cube_to_2d_coords(ctx, shifted_cube_coords,
- shifted_coords);
-
- /* Subtract both sets of 2D coordinates to get 2D
derivatives.
- * This won't work if the shifted coordinates ended up
- * in a different face.
- */
- for (i = 0; i < 2; i++)
- derivs[axis * 2 + i] =
- LLVMBuildFSub(ctx->builder,
shifted_coords[i],
- coords[i], "");
- }
-
- memcpy(derivs_arg, derivs, sizeof(derivs));
- }
-
- if (is_array) {
- /* for cube arrays coord.z = coord.w(array_index) * 8 + face */
- /* coords_arg.w component - array_index for cube arrays */
- LLVMValueRef tmp = LLVMBuildFMul(ctx->builder, coords_arg[3],
LLVMConstReal(ctx->f32, 8.0), "");
- coords[2] = LLVMBuildFAdd(ctx->builder, tmp, coords[2], "");
- }
-
- memcpy(coords_arg, coords, sizeof(coords));
-}
-
static void visit_tex(struct nir_to_llvm_context *ctx, nir_tex_instr *instr)
{
LLVMValueRef result = NULL;
@@ -3584,7 +3390,9 @@ static void visit_tex(struct nir_to_llvm_context *ctx,
nir_tex_instr *instr)
coords[chan] = to_float(ctx, coords[chan]);
if (instr->coord_components == 3)
coords[3] = LLVMGetUndef(ctx->f32);
- emit_prepare_cube_coords(ctx, coords, instr->coord_components,
instr->op == nir_texop_txd, instr->is_array, derivs);
+ ac_prepare_cube_coords(&ctx->ac,
+ instr->op == nir_texop_txd, instr->is_array,
+ coords, derivs);
if (num_deriv_comp)
num_deriv_comp--;
}
@@ -4694,6 +4502,9 @@ LLVMModuleRef
ac_translate_nir_to_llvm(LLVMTargetMachineRef tm,
ctx.context = LLVMContextCreate();
ctx.module = LLVMModuleCreateWithNameInContext("shader", ctx.context);
+ ac_llvm_context_init(&ctx.ac, ctx.context);
+ ctx.ac.module = ctx.module;
+
ctx.has_ds_bpermute = ctx.options->chip_class >= VI;
memset(shader_info, 0, sizeof(*shader_info));
@@ -4702,6 +4513,7 @@ LLVMModuleRef
ac_translate_nir_to_llvm(LLVMTargetMachineRef tm,
setup_types(&ctx);
ctx.builder = LLVMCreateBuilderInContext(ctx.context);
+ ctx.ac.builder = ctx.builder;
ctx.stage = nir->stage;
for (i = 0; i < AC_UD_MAX_SETS; i++)
diff --git a/src/gallium/drivers/radeonsi/si_shader.c
b/src/gallium/drivers/radeonsi/si_shader.c
index 6f0f414..c24d82d 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -4606,7 +4606,11 @@ static void tex_fetch_args(
target == TGSI_TEXTURE_CUBE_ARRAY ||
target == TGSI_TEXTURE_SHADOWCUBE ||
target == TGSI_TEXTURE_SHADOWCUBE_ARRAY)
- si_prepare_cube_coords(bld_base, emit_data, coords, derivs);
+ ac_prepare_cube_coords(&ctx->ac,
+ opcode == TGSI_OPCODE_TXD,
+ target == TGSI_TEXTURE_CUBE_ARRAY ||
+ target == TGSI_TEXTURE_SHADOWCUBE_ARRAY,
+ coords, derivs);
if (opcode == TGSI_OPCODE_TXD)
for (int i = 0; i < num_deriv_channels * 2; i++)
diff --git a/src/gallium/drivers/radeonsi/si_shader_internal.h
b/src/gallium/drivers/radeonsi/si_shader_internal.h
index 8d6a40b..6b3ac17 100644
--- a/src/gallium/drivers/radeonsi/si_shader_internal.h
+++ b/src/gallium/drivers/radeonsi/si_shader_internal.h
@@ -28,6 +28,7 @@
#include "gallivm/lp_bld_init.h"
#include "gallivm/lp_bld_tgsi.h"
#include "tgsi/tgsi_parse.h"
+#include "ac_llvm_util.h"
#include <llvm-c/Core.h>
#include <llvm-c/TargetMachine.h>
@@ -48,6 +49,7 @@ struct si_llvm_flow;
struct si_shader_context {
struct lp_build_tgsi_soa_context soa;
struct gallivm_state gallivm;
+ struct ac_llvm_context ac;
struct si_shader *shader;
struct si_screen *screen;
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
b/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
index 3e0f7c4..8c8b426 100644
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_setup.c
@@ -1266,6 +1266,10 @@ void si_llvm_context_init(struct si_shader_context *ctx,
ctx->gallivm.builder = lp_create_builder(ctx->gallivm.context,
unsafe_fpmath);
+ ac_llvm_context_init(&ctx->ac, ctx->gallivm.context);
+ ctx->ac.module = ctx->gallivm.module;
+ ctx->ac.builder = ctx->gallivm.builder;
+
struct lp_build_tgsi_context *bld_base = &ctx->soa.bld_base;
bld_base->info = info;
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