Export true C based builtins to a file of its own.
This commit is contained in:
@@ -0,0 +1,151 @@
|
||||
// Generated by llvm2cpp - DO NOT MODIFY!
|
||||
|
||||
|
||||
Module* createGallivmBuiltins(Module *mod) {
|
||||
|
||||
mod->setModuleIdentifier("shader");
|
||||
|
||||
// Type Definitions
|
||||
std::vector<const Type*>FuncTy_0_args;
|
||||
FuncTy_0_args.push_back(Type::FloatTy);
|
||||
FuncTy_0_args.push_back(Type::FloatTy);
|
||||
ParamAttrsList *FuncTy_0_PAL = 0;
|
||||
FunctionType* FuncTy_0 = FunctionType::get(
|
||||
/*Result=*/Type::FloatTy,
|
||||
/*Params=*/FuncTy_0_args,
|
||||
/*isVarArg=*/false,
|
||||
/*ParamAttrs=*/FuncTy_0_PAL);
|
||||
|
||||
PointerType* PointerTy_1 = PointerType::get(FuncTy_0);
|
||||
|
||||
VectorType* VectorTy_2 = VectorType::get(Type::FloatTy, 4);
|
||||
|
||||
std::vector<const Type*>FuncTy_3_args;
|
||||
FuncTy_3_args.push_back(VectorTy_2);
|
||||
ParamAttrsList *FuncTy_3_PAL = 0;
|
||||
FunctionType* FuncTy_3 = FunctionType::get(
|
||||
/*Result=*/VectorTy_2,
|
||||
/*Params=*/FuncTy_3_args,
|
||||
/*isVarArg=*/false,
|
||||
/*ParamAttrs=*/FuncTy_3_PAL);
|
||||
|
||||
|
||||
// Function Declarations
|
||||
|
||||
Function* func_approx = new Function(
|
||||
/*Type=*/FuncTy_0,
|
||||
/*Linkage=*/GlobalValue::ExternalLinkage,
|
||||
/*Name=*/"approx", mod);
|
||||
func_approx->setCallingConv(CallingConv::C);
|
||||
|
||||
Function* func_powf = new Function(
|
||||
/*Type=*/FuncTy_0,
|
||||
/*Linkage=*/GlobalValue::ExternalLinkage,
|
||||
/*Name=*/"powf", mod); // (external, no body)
|
||||
func_powf->setCallingConv(CallingConv::C);
|
||||
|
||||
Function* func_lit = new Function(
|
||||
/*Type=*/FuncTy_3,
|
||||
/*Linkage=*/GlobalValue::ExternalLinkage,
|
||||
/*Name=*/"lit", mod);
|
||||
func_lit->setCallingConv(CallingConv::C);
|
||||
|
||||
// Global Variable Declarations
|
||||
|
||||
|
||||
// Constant Definitions
|
||||
ConstantFP* const_float_4 = ConstantFP::get(Type::FloatTy, APFloat(-1.280000e+02f));
|
||||
ConstantFP* const_float_5 = ConstantFP::get(Type::FloatTy, APFloat(1.280000e+02f));
|
||||
Constant* const_float_6 = Constant::getNullValue(Type::FloatTy);
|
||||
Constant* const_int32_7 = Constant::getNullValue(IntegerType::get(32));
|
||||
std::vector<Constant*> const_packed_8_elems;
|
||||
ConstantFP* const_float_9 = ConstantFP::get(Type::FloatTy, APFloat(1.000000e+00f));
|
||||
const_packed_8_elems.push_back(const_float_9);
|
||||
UndefValue* const_float_10 = UndefValue::get(Type::FloatTy);
|
||||
const_packed_8_elems.push_back(const_float_10);
|
||||
const_packed_8_elems.push_back(const_float_10);
|
||||
const_packed_8_elems.push_back(const_float_9);
|
||||
Constant* const_packed_8 = ConstantVector::get(VectorTy_2, const_packed_8_elems);
|
||||
ConstantInt* const_int32_11 = ConstantInt::get(APInt(32, "1", 10));
|
||||
ConstantInt* const_int32_12 = ConstantInt::get(APInt(32, "3", 10));
|
||||
ConstantInt* const_int32_13 = ConstantInt::get(APInt(32, "2", 10));
|
||||
std::vector<Constant*> const_packed_14_elems;
|
||||
const_packed_14_elems.push_back(const_float_9);
|
||||
const_packed_14_elems.push_back(const_float_6);
|
||||
const_packed_14_elems.push_back(const_float_6);
|
||||
const_packed_14_elems.push_back(const_float_9);
|
||||
Constant* const_packed_14 = ConstantVector::get(VectorTy_2, const_packed_14_elems);
|
||||
|
||||
// Global Variable Definitions
|
||||
|
||||
// Function Definitions
|
||||
|
||||
// Function: approx (func_approx)
|
||||
{
|
||||
Function::arg_iterator args = func_approx->arg_begin();
|
||||
Value* float_a = args++;
|
||||
float_a->setName("a");
|
||||
Value* float_b = args++;
|
||||
float_b->setName("b");
|
||||
|
||||
BasicBlock* label_entry = new BasicBlock("entry",func_approx,0);
|
||||
|
||||
// Block entry (label_entry)
|
||||
FCmpInst* int1_cmp = new FCmpInst(FCmpInst::FCMP_OLT, float_b, const_float_4, "cmp", label_entry);
|
||||
SelectInst* float_b_addr_0 = new SelectInst(int1_cmp, const_float_4, float_b, "b.addr.0", label_entry);
|
||||
FCmpInst* int1_cmp3 = new FCmpInst(FCmpInst::FCMP_OGT, float_b_addr_0, const_float_5, "cmp3", label_entry);
|
||||
SelectInst* float_b_addr_1 = new SelectInst(int1_cmp3, const_float_5, float_b_addr_0, "b.addr.1", label_entry);
|
||||
FCmpInst* int1_cmp7 = new FCmpInst(FCmpInst::FCMP_OLT, float_a, const_float_6, "cmp7", label_entry);
|
||||
SelectInst* float_a_addr_0 = new SelectInst(int1_cmp7, const_float_6, float_a, "a.addr.0", label_entry);
|
||||
std::vector<Value*> float_call_params;
|
||||
float_call_params.push_back(float_a_addr_0);
|
||||
float_call_params.push_back(float_b_addr_1);
|
||||
CallInst* float_call = new CallInst(func_powf, float_call_params.begin(), float_call_params.end(), "call", label_entry);
|
||||
float_call->setCallingConv(CallingConv::C);
|
||||
float_call->setTailCall(true);
|
||||
new ReturnInst(float_call, label_entry);
|
||||
|
||||
}
|
||||
|
||||
// Function: lit (func_lit)
|
||||
{
|
||||
Function::arg_iterator args = func_lit->arg_begin();
|
||||
Value* packed_tmp = args++;
|
||||
packed_tmp->setName("tmp");
|
||||
|
||||
BasicBlock* label_entry_16 = new BasicBlock("entry",func_lit,0);
|
||||
BasicBlock* label_ifthen = new BasicBlock("ifthen",func_lit,0);
|
||||
BasicBlock* label_UnifiedReturnBlock = new BasicBlock("UnifiedReturnBlock",func_lit,0);
|
||||
|
||||
// Block entry (label_entry_16)
|
||||
ExtractElementInst* float_tmp7 = new ExtractElementInst(packed_tmp, const_int32_7, "tmp7", label_entry_16);
|
||||
FCmpInst* int1_cmp_17 = new FCmpInst(FCmpInst::FCMP_OGT, float_tmp7, const_float_6, "cmp", label_entry_16);
|
||||
new BranchInst(label_ifthen, label_UnifiedReturnBlock, int1_cmp_17, label_entry_16);
|
||||
|
||||
// Block ifthen (label_ifthen)
|
||||
InsertElementInst* packed_tmp12 = new InsertElementInst(const_packed_8, float_tmp7, const_int32_11, "tmp12", label_ifthen);
|
||||
ExtractElementInst* float_tmp14 = new ExtractElementInst(packed_tmp, const_int32_11, "tmp14", label_ifthen);
|
||||
ExtractElementInst* float_tmp16 = new ExtractElementInst(packed_tmp, const_int32_12, "tmp16", label_ifthen);
|
||||
FCmpInst* int1_cmp_i = new FCmpInst(FCmpInst::FCMP_OLT, float_tmp16, const_float_4, "cmp.i", label_ifthen);
|
||||
SelectInst* float_b_addr_0_i = new SelectInst(int1_cmp_i, const_float_4, float_tmp16, "b.addr.0.i", label_ifthen);
|
||||
FCmpInst* int1_cmp3_i = new FCmpInst(FCmpInst::FCMP_OGT, float_b_addr_0_i, const_float_5, "cmp3.i", label_ifthen);
|
||||
SelectInst* float_b_addr_1_i = new SelectInst(int1_cmp3_i, const_float_5, float_b_addr_0_i, "b.addr.1.i", label_ifthen);
|
||||
FCmpInst* int1_cmp7_i = new FCmpInst(FCmpInst::FCMP_OLT, float_tmp14, const_float_6, "cmp7.i", label_ifthen);
|
||||
SelectInst* float_a_addr_0_i = new SelectInst(int1_cmp7_i, const_float_6, float_tmp14, "a.addr.0.i", label_ifthen);
|
||||
std::vector<Value*> float_call_i_params;
|
||||
float_call_i_params.push_back(float_a_addr_0_i);
|
||||
float_call_i_params.push_back(float_b_addr_1_i);
|
||||
CallInst* float_call_i = new CallInst(func_powf, float_call_i_params.begin(), float_call_i_params.end(), "call.i", label_ifthen);
|
||||
float_call_i->setCallingConv(CallingConv::C);
|
||||
float_call_i->setTailCall(true);
|
||||
InsertElementInst* packed_tmp18 = new InsertElementInst(packed_tmp12, float_call_i, const_int32_13, "tmp18", label_ifthen);
|
||||
new ReturnInst(packed_tmp18, label_ifthen);
|
||||
|
||||
// Block UnifiedReturnBlock (label_UnifiedReturnBlock)
|
||||
new ReturnInst(const_packed_14, label_UnifiedReturnBlock);
|
||||
|
||||
}
|
||||
|
||||
return mod;
|
||||
|
||||
}
|
||||
@@ -48,7 +48,7 @@
|
||||
|
||||
using namespace llvm;
|
||||
|
||||
Function* makeLitFunction(Module *mod);
|
||||
#include "gallivm_builtins.cpp"
|
||||
|
||||
static inline std::string createFuncName(int label)
|
||||
{
|
||||
@@ -70,6 +70,8 @@ Instructions::Instructions(llvm::Module *mod, llvm::Function *func, llvm::BasicB
|
||||
m_llvmFlog = 0;
|
||||
m_llvmLit = 0;
|
||||
m_fmtPtr = 0;
|
||||
|
||||
createGallivmBuiltins(m_mod);
|
||||
}
|
||||
|
||||
llvm::Value * Instructions::add(llvm::Value *in1, llvm::Value *in2)
|
||||
@@ -214,7 +216,7 @@ llvm::Value *Instructions::callFAbs(llvm::Value *val)
|
||||
llvm::Value * Instructions::lit(llvm::Value *in)
|
||||
{
|
||||
if (!m_llvmLit) {
|
||||
m_llvmLit = makeLitFunction(m_mod);
|
||||
m_llvmLit = m_mod->getFunction("lit");
|
||||
}
|
||||
CallInst *call = new CallInst(m_llvmLit, in, name("litres"), m_block);
|
||||
call->setCallingConv(CallingConv::C);
|
||||
@@ -787,180 +789,6 @@ llvm::Value * Instructions::abs(llvm::Value *in)
|
||||
return vectorFromVals(xabs, yabs, zabs, wabs);
|
||||
}
|
||||
|
||||
/*
|
||||
FIXME: hand write the lit function. Currently it's
|
||||
generated from:
|
||||
typedef __attribute__(( ocu_vector_type(4) )) float float4;
|
||||
|
||||
extern float powf(float a, float b);
|
||||
|
||||
inline float approx(float a, float b)
|
||||
{
|
||||
if (b < -128.0f) b = -128.0f;
|
||||
if (b > 128.0f) b = 128.0f;
|
||||
if (a < 0) a = 0;
|
||||
return powf(a, b);
|
||||
}
|
||||
|
||||
float4 lit(float4 tmp)
|
||||
{
|
||||
float4 result;
|
||||
result.x = 1.0;
|
||||
result.w = 1.0;
|
||||
if (tmp.x > 0) {
|
||||
result.y = tmp.x;
|
||||
result.z = approx(tmp.y, tmp.w);
|
||||
} else {
|
||||
result.y = 0;
|
||||
result.z = 0;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
with:
|
||||
clang --emit-llvm lit.c |llvm-as|opt -std-compile-opts|llvm2cpp -gen-contents -for=lit
|
||||
*/
|
||||
Function* makeLitFunction(Module *mod) {
|
||||
|
||||
// Type Definitions
|
||||
std::vector<const Type*>FuncTy_0_args;
|
||||
FuncTy_0_args.push_back(Type::FloatTy);
|
||||
FuncTy_0_args.push_back(Type::FloatTy);
|
||||
ParamAttrsList *FuncTy_0_PAL = 0;
|
||||
FunctionType* FuncTy_0 = FunctionType::get(
|
||||
/*Result=*/Type::FloatTy,
|
||||
/*Params=*/FuncTy_0_args,
|
||||
/*isVarArg=*/false,
|
||||
/*ParamAttrs=*/FuncTy_0_PAL);
|
||||
|
||||
VectorType* VectorTy_2 = VectorType::get(Type::FloatTy, 4);
|
||||
|
||||
std::vector<const Type*>FuncTy_3_args;
|
||||
FuncTy_3_args.push_back(VectorTy_2);
|
||||
ParamAttrsList *FuncTy_3_PAL = 0;
|
||||
FunctionType* FuncTy_3 = FunctionType::get(
|
||||
/*Result=*/VectorTy_2,
|
||||
/*Params=*/FuncTy_3_args,
|
||||
/*isVarArg=*/false,
|
||||
/*ParamAttrs=*/FuncTy_3_PAL);
|
||||
|
||||
|
||||
// Function Declarations
|
||||
|
||||
Function* func_approx = new Function(
|
||||
/*Type=*/FuncTy_0,
|
||||
/*Linkage=*/GlobalValue::ExternalLinkage,
|
||||
/*Name=*/"approx", mod);
|
||||
func_approx->setCallingConv(CallingConv::C);
|
||||
|
||||
Function* func_powf = new Function(
|
||||
/*Type=*/FuncTy_0,
|
||||
/*Linkage=*/GlobalValue::ExternalLinkage,
|
||||
/*Name=*/"powf", mod); // (external, no body)
|
||||
func_powf->setCallingConv(CallingConv::C);
|
||||
|
||||
Function* func_lit = new Function(
|
||||
/*Type=*/FuncTy_3,
|
||||
/*Linkage=*/GlobalValue::ExternalLinkage,
|
||||
/*Name=*/"lit", mod);
|
||||
func_lit->setCallingConv(CallingConv::C);
|
||||
|
||||
// Global Variable Declarations
|
||||
|
||||
|
||||
// Constant Definitions
|
||||
ConstantFP* const_float_4 = ConstantFP::get(Type::FloatTy, APFloat(-1.280000e+02f));
|
||||
ConstantFP* const_float_5 = ConstantFP::get(Type::FloatTy, APFloat(1.280000e+02f));
|
||||
Constant* const_float_6 = Constant::getNullValue(Type::FloatTy);
|
||||
Constant* const_int32_7 = Constant::getNullValue(IntegerType::get(32));
|
||||
std::vector<Constant*> const_packed_8_elems;
|
||||
ConstantFP* const_float_9 = ConstantFP::get(Type::FloatTy, APFloat(1.000000e+00f));
|
||||
const_packed_8_elems.push_back(const_float_9);
|
||||
UndefValue* const_float_10 = UndefValue::get(Type::FloatTy);
|
||||
const_packed_8_elems.push_back(const_float_10);
|
||||
const_packed_8_elems.push_back(const_float_10);
|
||||
const_packed_8_elems.push_back(const_float_9);
|
||||
Constant* const_packed_8 = ConstantVector::get(VectorTy_2, const_packed_8_elems);
|
||||
ConstantInt* const_int32_11 = ConstantInt::get(APInt(32, "1", 10));
|
||||
ConstantInt* const_int32_12 = ConstantInt::get(APInt(32, "3", 10));
|
||||
ConstantInt* const_int32_13 = ConstantInt::get(APInt(32, "2", 10));
|
||||
std::vector<Constant*> const_packed_14_elems;
|
||||
const_packed_14_elems.push_back(const_float_9);
|
||||
const_packed_14_elems.push_back(const_float_6);
|
||||
const_packed_14_elems.push_back(const_float_6);
|
||||
const_packed_14_elems.push_back(const_float_9);
|
||||
Constant* const_packed_14 = ConstantVector::get(VectorTy_2, const_packed_14_elems);
|
||||
|
||||
// Global Variable Definitions
|
||||
|
||||
// Function Definitions
|
||||
|
||||
// Function: approx (func_approx)
|
||||
{
|
||||
Function::arg_iterator args = func_approx->arg_begin();
|
||||
Value* float_a = args++;
|
||||
float_a->setName("a");
|
||||
Value* float_b = args++;
|
||||
float_b->setName("b");
|
||||
|
||||
BasicBlock* label_entry = new BasicBlock("entry",func_approx,0);
|
||||
|
||||
// Block entry (label_entry)
|
||||
FCmpInst* int1_cmp = new FCmpInst(FCmpInst::FCMP_OLT, float_b, const_float_4, "cmp", label_entry);
|
||||
SelectInst* float_b_addr_0 = new SelectInst(int1_cmp, const_float_4, float_b, "b.addr.0", label_entry);
|
||||
FCmpInst* int1_cmp3 = new FCmpInst(FCmpInst::FCMP_OGT, float_b_addr_0, const_float_5, "cmp3", label_entry);
|
||||
SelectInst* float_b_addr_1 = new SelectInst(int1_cmp3, const_float_5, float_b_addr_0, "b.addr.1", label_entry);
|
||||
FCmpInst* int1_cmp7 = new FCmpInst(FCmpInst::FCMP_OLT, float_a, const_float_6, "cmp7", label_entry);
|
||||
SelectInst* float_a_addr_0 = new SelectInst(int1_cmp7, const_float_6, float_a, "a.addr.0", label_entry);
|
||||
std::vector<Value*> float_call_params;
|
||||
float_call_params.push_back(float_a_addr_0);
|
||||
float_call_params.push_back(float_b_addr_1);
|
||||
CallInst* float_call = new CallInst(func_powf, float_call_params.begin(), float_call_params.end(), "call", label_entry);
|
||||
float_call->setCallingConv(CallingConv::C);
|
||||
float_call->setTailCall(true);
|
||||
new ReturnInst(float_call, label_entry);
|
||||
}
|
||||
|
||||
// Function: lit (func_lit)
|
||||
{
|
||||
Function::arg_iterator args = func_lit->arg_begin();
|
||||
Value* packed_tmp = args++;
|
||||
packed_tmp->setName("tmp");
|
||||
|
||||
BasicBlock* label_entry_16 = new BasicBlock("entry",func_lit,0);
|
||||
BasicBlock* label_ifthen = new BasicBlock("ifthen",func_lit,0);
|
||||
BasicBlock* label_UnifiedReturnBlock = new BasicBlock("UnifiedReturnBlock",func_lit,0);
|
||||
|
||||
// Block entry (label_entry_16)
|
||||
ExtractElementInst* float_tmp7 = new ExtractElementInst(packed_tmp, const_int32_7, "tmp7", label_entry_16);
|
||||
FCmpInst* int1_cmp_17 = new FCmpInst(FCmpInst::FCMP_OGT, float_tmp7, const_float_6, "cmp", label_entry_16);
|
||||
new BranchInst(label_ifthen, label_UnifiedReturnBlock, int1_cmp_17, label_entry_16);
|
||||
|
||||
// Block ifthen (label_ifthen)
|
||||
InsertElementInst* packed_tmp12 = new InsertElementInst(const_packed_8, float_tmp7, const_int32_11, "tmp12", label_ifthen);
|
||||
ExtractElementInst* float_tmp14 = new ExtractElementInst(packed_tmp, const_int32_11, "tmp14", label_ifthen);
|
||||
ExtractElementInst* float_tmp16 = new ExtractElementInst(packed_tmp, const_int32_12, "tmp16", label_ifthen);
|
||||
FCmpInst* int1_cmp_i = new FCmpInst(FCmpInst::FCMP_OLT, float_tmp16, const_float_4, "cmp.i", label_ifthen);
|
||||
SelectInst* float_b_addr_0_i = new SelectInst(int1_cmp_i, const_float_4, float_tmp16, "b.addr.0.i", label_ifthen);
|
||||
FCmpInst* int1_cmp3_i = new FCmpInst(FCmpInst::FCMP_OGT, float_b_addr_0_i, const_float_5, "cmp3.i", label_ifthen);
|
||||
SelectInst* float_b_addr_1_i = new SelectInst(int1_cmp3_i, const_float_5, float_b_addr_0_i, "b.addr.1.i", label_ifthen);
|
||||
FCmpInst* int1_cmp7_i = new FCmpInst(FCmpInst::FCMP_OLT, float_tmp14, const_float_6, "cmp7.i", label_ifthen);
|
||||
SelectInst* float_a_addr_0_i = new SelectInst(int1_cmp7_i, const_float_6, float_tmp14, "a.addr.0.i", label_ifthen);
|
||||
std::vector<Value*> float_call_i_params;
|
||||
float_call_i_params.push_back(float_a_addr_0_i);
|
||||
float_call_i_params.push_back(float_b_addr_1_i);
|
||||
CallInst* float_call_i = new CallInst(func_powf, float_call_i_params.begin(), float_call_i_params.end(), "call.i", label_ifthen);
|
||||
float_call_i->setCallingConv(CallingConv::C);
|
||||
float_call_i->setTailCall(true);
|
||||
InsertElementInst* packed_tmp18 = new InsertElementInst(packed_tmp12, float_call_i, const_int32_13, "tmp18", label_ifthen);
|
||||
new ReturnInst(packed_tmp18, label_ifthen);
|
||||
|
||||
// Block UnifiedReturnBlock (label_UnifiedReturnBlock)
|
||||
new ReturnInst(const_packed_14, label_UnifiedReturnBlock);
|
||||
|
||||
}
|
||||
return func_lit;
|
||||
}
|
||||
|
||||
void Instructions::ifop(llvm::Value *in)
|
||||
{
|
||||
BasicBlock *ifthen = new BasicBlock(name("ifthen"), m_func,0);
|
||||
@@ -1171,3 +999,4 @@ llvm::Value * Instructions::constVector(float x, float y, float z, float w)
|
||||
|
||||
#endif //MESA_LLVM
|
||||
|
||||
|
||||
|
||||
@@ -0,0 +1,59 @@
|
||||
/*clang --emit-llvm llvm_builtins.c |llvm-as|opt -std-compile-opts|llvm2cpp -gen-contents -o=gallivm_builtins.cpp -f -for=shader -funcname=createGallivmBuiltins*/
|
||||
/**************************************************************************
|
||||
*
|
||||
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
|
||||
* All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
* copy of this software and associated documentation files (the
|
||||
* "Software"), to deal in the Software without restriction, including
|
||||
* without limitation the rights to use, copy, modify, merge, publish,
|
||||
* distribute, sub license, and/or sell copies of the Software, and to
|
||||
* permit persons to whom the Software is furnished to do so, subject to
|
||||
* the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice (including the
|
||||
* next paragraph) shall be included in all copies or substantial portions
|
||||
* of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
||||
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
|
||||
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
|
||||
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*
|
||||
**************************************************************************/
|
||||
|
||||
/*
|
||||
* Authors:
|
||||
* Zack Rusin zack@tungstengraphics.com
|
||||
*/
|
||||
typedef __attribute__(( ocu_vector_type(4) )) float float4;
|
||||
|
||||
|
||||
extern float powf(float a, float b);
|
||||
|
||||
inline float approx(float a, float b)
|
||||
{
|
||||
if (b < -128.0f) b = -128.0f;
|
||||
if (b > 128.0f) b = 128.0f;
|
||||
if (a < 0) a = 0;
|
||||
return powf(a, b);
|
||||
}
|
||||
|
||||
float4 lit(float4 tmp)
|
||||
{
|
||||
float4 result;
|
||||
result.x = 1.0;
|
||||
result.w = 1.0;
|
||||
if (tmp.x > 0) {
|
||||
result.y = tmp.x;
|
||||
result.z = approx(tmp.y, tmp.w);
|
||||
} else {
|
||||
result.y = 0;
|
||||
result.z = 0;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
Reference in New Issue
Block a user