gallium/swr: add OpenSWR rasterizer

Acked-by: Roland Scheidegger <[email protected]>
Acked-by: Jose Fonseca <[email protected]>

1 files changed, 772 insertions, 0 deletions

diff --git a/src/gallium/drivers/swr/rasterizer/jitter/blend_jit.cpp b/src/gallium/drivers/swr/rasterizer/jitter/blend_jit.cpp
new file mode 100644
index 00000000000..954524afd3a
--- /dev/null
+++ b/src/gallium/drivers/swr/rasterizer/jitter/blend_jit.cpp
@@ -0,0 +1,772 @@
+/****************************************************************************
+* Copyright (C) 2014-2015 Intel Corporation.   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, sublicense,
+* 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+* THE AUTHORS OR COPYRIGHT HOLDERS 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.
+*
+* @file blend_jit.cpp
+*
+* @brief Implementation of the blend jitter
+*
+* Notes:
+*
+******************************************************************************/
+#include "jit_api.h"
+#include "blend_jit.h"
+#include "builder.h"
+#include "state_llvm.h"
+#include "common/containers.hpp"
+#include "llvm/IR/DataLayout.h"
+
+#include <sstream>
+
+// components with bit-widths <= the QUANTIZE_THRESHOLD will be quantized
+#define QUANTIZE_THRESHOLD 2
+
+//////////////////////////////////////////////////////////////////////////
+/// Interface to Jitting a blend shader
+//////////////////////////////////////////////////////////////////////////
+struct BlendJit : public Builder
+{
+    BlendJit(JitManager* pJitMgr) : Builder(pJitMgr){};
+
+    template<bool Color, bool Alpha>
+    void GenerateBlendFactor(SWR_BLEND_FACTOR factor, Value* constColor[4], Value* src[4], Value* src1[4], Value* dst[4], Value* result[4])
+    {
+        Value* out[4];
+
+        switch (factor)
+        {
+        case BLENDFACTOR_ONE:
+            out[0] = out[1] = out[2] = out[3] = VIMMED1(1.0f);
+            break;
+        case BLENDFACTOR_SRC_COLOR:
+            out[0] = src[0];
+            out[1] = src[1];
+            out[2] = src[2];
+            out[3] = src[3];
+            break;
+        case BLENDFACTOR_SRC_ALPHA:
+            out[0] = out[1] = out[2] = out[3] = src[3];
+            break;
+        case BLENDFACTOR_DST_ALPHA:
+            out[0] = out[1] = out[2] = out[3] = dst[3];
+            break;
+        case BLENDFACTOR_DST_COLOR:
+            out[0] = dst[0];
+            out[1] = dst[1];
+            out[2] = dst[2];
+            out[3] = dst[3];
+            break;
+        case BLENDFACTOR_SRC_ALPHA_SATURATE:
+            out[0] = out[1] = out[2] = VMINPS(src[3], FSUB(VIMMED1(1.0f), dst[3]));
+            out[3] = VIMMED1(1.0f);
+            break;
+        case BLENDFACTOR_CONST_COLOR:
+            out[0] = constColor[0];
+            out[1] = constColor[1];
+            out[2] = constColor[2];
+            out[3] = constColor[3];
+            break;
+        case BLENDFACTOR_CONST_ALPHA:
+            out[0] = out[1] = out[2] = out[3] = constColor[3];
+            break;
+        case BLENDFACTOR_SRC1_COLOR:
+            out[0] = src1[0];
+            out[1] = src1[1];
+            out[2] = src1[2];
+            out[3] = src1[3];
+            break;
+        case BLENDFACTOR_SRC1_ALPHA:
+            out[0] = out[1] = out[2] = out[3] = src1[3];
+            break;
+        case BLENDFACTOR_ZERO:
+            out[0] = out[1] = out[2] = out[3] = VIMMED1(0.0f);
+            break;
+        case BLENDFACTOR_INV_SRC_COLOR:
+            out[0] = FSUB(VIMMED1(1.0f), src[0]);
+            out[1] = FSUB(VIMMED1(1.0f), src[1]);
+            out[2] = FSUB(VIMMED1(1.0f), src[2]);
+            out[3] = FSUB(VIMMED1(1.0f), src[3]);
+            break;
+        case BLENDFACTOR_INV_SRC_ALPHA:
+            out[0] = out[1] = out[2] = out[3] = FSUB(VIMMED1(1.0f), src[3]);
+            break;
+        case BLENDFACTOR_INV_DST_ALPHA:
+            out[0] = out[1] = out[2] = out[3] = FSUB(VIMMED1(1.0f), dst[3]);
+            break;
+        case BLENDFACTOR_INV_DST_COLOR:
+            out[0] = FSUB(VIMMED1(1.0f), dst[0]);
+            out[1] = FSUB(VIMMED1(1.0f), dst[1]);
+            out[2] = FSUB(VIMMED1(1.0f), dst[2]);
+            out[3] = FSUB(VIMMED1(1.0f), dst[3]);
+            break;
+        case BLENDFACTOR_INV_CONST_COLOR:
+            out[0] = FSUB(VIMMED1(1.0f), constColor[0]);
+            out[1] = FSUB(VIMMED1(1.0f), constColor[1]);
+            out[2] = FSUB(VIMMED1(1.0f), constColor[2]);
+            out[3] = FSUB(VIMMED1(1.0f), constColor[3]);
+            break;
+        case BLENDFACTOR_INV_CONST_ALPHA:
+            out[0] = out[1] = out[2] = out[3] = FSUB(VIMMED1(1.0f), constColor[3]);
+            break;
+        case BLENDFACTOR_INV_SRC1_COLOR:
+            out[0] = FSUB(VIMMED1(1.0f), src1[0]);
+            out[1] = FSUB(VIMMED1(1.0f), src1[1]);
+            out[2] = FSUB(VIMMED1(1.0f), src1[2]);
+            out[3] = FSUB(VIMMED1(1.0f), src1[3]);
+            break;
+        case BLENDFACTOR_INV_SRC1_ALPHA:
+            out[0] = out[1] = out[2] = out[3] = FSUB(VIMMED1(1.0f), src1[3]);
+            break;
+        default:
+            SWR_ASSERT(false, "Unsupported blend factor: %d", factor);
+            out[0] = out[1] = out[2] = out[3] = VIMMED1(0.0f);
+            break;
+        }
+
+        if (Color)
+        {
+            result[0] = out[0];
+            result[1] = out[1];
+            result[2] = out[2];
+        }
+
+        if (Alpha)
+        {
+            result[3] = out[3];
+        }
+    }
+
+    void Clamp(SWR_FORMAT format, Value* src[4])
+    {
+        const SWR_FORMAT_INFO& info = GetFormatInfo(format);
+        SWR_TYPE type = info.type[0];
+
+        switch (type)
+        {
+        case SWR_TYPE_FLOAT:
+            break;
+
+        case SWR_TYPE_UNORM:
+            src[0] = VMINPS(VMAXPS(src[0], VIMMED1(0.0f)), VIMMED1(1.0f));
+            src[1] = VMINPS(VMAXPS(src[1], VIMMED1(0.0f)), VIMMED1(1.0f));
+            src[2] = VMINPS(VMAXPS(src[2], VIMMED1(0.0f)), VIMMED1(1.0f));
+            src[3] = VMINPS(VMAXPS(src[3], VIMMED1(0.0f)), VIMMED1(1.0f));
+            break;
+
+        case SWR_TYPE_SNORM:
+            src[0] = VMINPS(VMAXPS(src[0], VIMMED1(-1.0f)), VIMMED1(1.0f));
+            src[1] = VMINPS(VMAXPS(src[1], VIMMED1(-1.0f)), VIMMED1(1.0f));
+            src[2] = VMINPS(VMAXPS(src[2], VIMMED1(-1.0f)), VIMMED1(1.0f));
+            src[3] = VMINPS(VMAXPS(src[3], VIMMED1(-1.0f)), VIMMED1(1.0f));
+            break;
+
+        default: SWR_ASSERT(false, "Unsupport format type: %d", type);
+        }
+    }
+
+    void ApplyDefaults(SWR_FORMAT format, Value* src[4])
+    {
+        const SWR_FORMAT_INFO& info = GetFormatInfo(format);
+
+        bool valid[] = { false, false, false, false };
+        for (uint32_t c = 0; c < info.numComps; ++c)
+        {
+            valid[info.swizzle[c]] = true;
+        }
+
+        for (uint32_t c = 0; c < 4; ++c)
+        {
+            if (!valid[c])
+            {
+                src[c] = BITCAST(VIMMED1((int)info.defaults[c]), mSimdFP32Ty);
+            }
+        }
+    }
+
+    void ApplyUnusedDefaults(SWR_FORMAT format, Value* src[4])
+    {
+        const SWR_FORMAT_INFO& info = GetFormatInfo(format);
+
+        for (uint32_t c = 0; c < info.numComps; ++c)
+        {
+            if (info.type[c] == SWR_TYPE_UNUSED)
+            {
+                src[info.swizzle[c]] = BITCAST(VIMMED1((int)info.defaults[info.swizzle[c]]), mSimdFP32Ty);
+            }
+        }
+    }
+
+    void Quantize(SWR_FORMAT format, Value* src[4])
+    {
+        const SWR_FORMAT_INFO& info = GetFormatInfo(format);
+        for (uint32_t c = 0; c < info.numComps; ++c)
+        {
+            if (info.bpc[c] <= QUANTIZE_THRESHOLD)
+            {
+                uint32_t swizComp = info.swizzle[c];
+                float factor = (float)((1 << info.bpc[c]) - 1);
+                switch (info.type[c])
+                {
+                case SWR_TYPE_UNORM:
+                    src[swizComp] = FADD(FMUL(src[swizComp], VIMMED1(factor)), VIMMED1(0.5f));
+                    src[swizComp] = VROUND(src[swizComp], C(_MM_FROUND_TO_ZERO));
+                    src[swizComp] = FMUL(src[swizComp], VIMMED1(1.0f /factor));
+                    break;
+                default: SWR_ASSERT(false, "Unsupported format type: %d", info.type[c]);
+                }
+            }
+        }
+    }
+
+    template<bool Color, bool Alpha>
+    void BlendFunc(SWR_BLEND_OP blendOp, Value* src[4], Value* srcFactor[4], Value* dst[4], Value* dstFactor[4], Value* result[4])
+    {
+        Value* out[4];
+        Value* srcBlend[4];
+        Value* dstBlend[4];
+        for (uint32_t i = 0; i < 4; ++i)
+        {
+            srcBlend[i] = FMUL(src[i], srcFactor[i]);
+            dstBlend[i] = FMUL(dst[i], dstFactor[i]);
+        }
+
+        switch (blendOp)
+        {
+        case BLENDOP_ADD:
+            out[0] = FADD(srcBlend[0], dstBlend[0]);
+            out[1] = FADD(srcBlend[1], dstBlend[1]);
+            out[2] = FADD(srcBlend[2], dstBlend[2]);
+            out[3] = FADD(srcBlend[3], dstBlend[3]);
+            break;
+
+        case BLENDOP_SUBTRACT:
+            out[0] = FSUB(srcBlend[0], dstBlend[0]);
+            out[1] = FSUB(srcBlend[1], dstBlend[1]);
+            out[2] = FSUB(srcBlend[2], dstBlend[2]);
+            out[3] = FSUB(srcBlend[3], dstBlend[3]);
+            break;
+
+        case BLENDOP_REVSUBTRACT:
+            out[0] = FSUB(dstBlend[0], srcBlend[0]);
+            out[1] = FSUB(dstBlend[1], srcBlend[1]);
+            out[2] = FSUB(dstBlend[2], srcBlend[2]);
+            out[3] = FSUB(dstBlend[3], srcBlend[3]);
+            break;
+
+        case BLENDOP_MIN:
+            out[0] = VMINPS(src[0], dst[0]);
+            out[1] = VMINPS(src[1], dst[1]);
+            out[2] = VMINPS(src[2], dst[2]);
+            out[3] = VMINPS(src[3], dst[3]);
+            break;
+
+        case BLENDOP_MAX:
+            out[0] = VMAXPS(src[0], dst[0]);
+            out[1] = VMAXPS(src[1], dst[1]);
+            out[2] = VMAXPS(src[2], dst[2]);
+            out[3] = VMAXPS(src[3], dst[3]);
+            break;
+
+        default:
+            SWR_ASSERT(false, "Unsupported blend operation: %d", blendOp);
+            out[0] = out[1] = out[2] = out[3] = VIMMED1(0.0f);
+            break;
+        }
+
+        if (Color)
+        {
+            result[0] = out[0];
+            result[1] = out[1];
+            result[2] = out[2];
+        }
+
+        if (Alpha)
+        {
+            result[3] = out[3];
+        }
+    }
+
+    void LogicOpFunc(SWR_LOGIC_OP logicOp, Value* src[4], Value* dst[4], Value* result[4])
+    {
+        // Op: (s == PS output, d = RT contents)
+        switch(logicOp)
+        {
+        case LOGICOP_CLEAR:
+            result[0] = VIMMED1(0);
+            result[1] = VIMMED1(0);
+            result[2] = VIMMED1(0);
+            result[3] = VIMMED1(0);
+            break;
+
+        case LOGICOP_NOR:
+            // ~(s | d)
+            result[0] = XOR(OR(src[0], dst[0]), VIMMED1(0xFFFFFFFF));
+            result[1] = XOR(OR(src[1], dst[1]), VIMMED1(0xFFFFFFFF));
+            result[2] = XOR(OR(src[2], dst[2]), VIMMED1(0xFFFFFFFF));
+            result[3] = XOR(OR(src[3], dst[3]), VIMMED1(0xFFFFFFFF));
+            break;
+
+        case LOGICOP_AND_INVERTED:
+            // ~s & d
+            // todo: use avx andnot instr when I can find the intrinsic to call
+            result[0] = AND(XOR(src[0], VIMMED1(0xFFFFFFFF)), dst[0]);
+            result[1] = AND(XOR(src[1], VIMMED1(0xFFFFFFFF)), dst[1]);
+            result[2] = AND(XOR(src[2], VIMMED1(0xFFFFFFFF)), dst[2]);
+            result[3] = AND(XOR(src[3], VIMMED1(0xFFFFFFFF)), dst[3]);
+            break;
+
+        case LOGICOP_COPY_INVERTED:
+            // ~s
+            result[0] = XOR(src[0], VIMMED1(0xFFFFFFFF));
+            result[1] = XOR(src[1], VIMMED1(0xFFFFFFFF));
+            result[2] = XOR(src[2], VIMMED1(0xFFFFFFFF));
+            result[3] = XOR(src[3], VIMMED1(0xFFFFFFFF));
+            break;
+
+        case LOGICOP_AND_REVERSE:
+            // s & ~d
+            // todo: use avx andnot instr when I can find the intrinsic to call
+            result[0] = AND(XOR(dst[0], VIMMED1(0xFFFFFFFF)), src[0]);
+            result[1] = AND(XOR(dst[1], VIMMED1(0xFFFFFFFF)), src[1]);
+            result[2] = AND(XOR(dst[2], VIMMED1(0xFFFFFFFF)), src[2]);
+            result[3] = AND(XOR(dst[3], VIMMED1(0xFFFFFFFF)), src[3]);
+            break;
+
+        case LOGICOP_INVERT:
+            // ~d
+            result[0] = XOR(dst[0], VIMMED1(0xFFFFFFFF));
+            result[1] = XOR(dst[1], VIMMED1(0xFFFFFFFF));
+            result[2] = XOR(dst[2], VIMMED1(0xFFFFFFFF));
+            result[3] = XOR(dst[3], VIMMED1(0xFFFFFFFF));
+            break;
+
+        case LOGICOP_XOR:
+            // s ^ d
+            result[0] = XOR(src[0], dst[0]);
+            result[1] = XOR(src[1], dst[1]);
+            result[2] = XOR(src[2], dst[2]);
+            result[3] = XOR(src[3], dst[3]);
+            break;
+
+        case LOGICOP_NAND:
+            // ~(s & d)
+            result[0] = XOR(AND(src[0], dst[0]), VIMMED1(0xFFFFFFFF));
+            result[1] = XOR(AND(src[1], dst[1]), VIMMED1(0xFFFFFFFF));
+            result[2] = XOR(AND(src[2], dst[2]), VIMMED1(0xFFFFFFFF));
+            result[3] = XOR(AND(src[3], dst[3]), VIMMED1(0xFFFFFFFF));
+            break;
+
+        case LOGICOP_AND:
+            // s & d
+            result[0] = AND(src[0], dst[0]);
+            result[1] = AND(src[1], dst[1]);
+            result[2] = AND(src[2], dst[2]);
+            result[3] = AND(src[3], dst[3]);
+            break;
+
+        case LOGICOP_EQUIV:
+            // ~(s ^ d)
+            result[0] = XOR(XOR(src[0], dst[0]), VIMMED1(0xFFFFFFFF));
+            result[1] = XOR(XOR(src[1], dst[1]), VIMMED1(0xFFFFFFFF));
+            result[2] = XOR(XOR(src[2], dst[2]), VIMMED1(0xFFFFFFFF));
+            result[3] = XOR(XOR(src[3], dst[3]), VIMMED1(0xFFFFFFFF));
+            break;
+
+        case LOGICOP_NOOP:
+            result[0] = dst[0];
+            result[1] = dst[1];
+            result[2] = dst[2];
+            result[3] = dst[3];
+            break;
+
+        case LOGICOP_OR_INVERTED:
+            // ~s | d
+            result[0] = OR(XOR(src[0], VIMMED1(0xFFFFFFFF)), dst[0]);
+            result[1] = OR(XOR(src[1], VIMMED1(0xFFFFFFFF)), dst[1]);
+            result[2] = OR(XOR(src[2], VIMMED1(0xFFFFFFFF)), dst[2]);
+            result[3] = OR(XOR(src[3], VIMMED1(0xFFFFFFFF)), dst[3]);
+            break;
+
+        case LOGICOP_COPY:
+            result[0] = src[0];
+            result[1] = src[1];
+            result[2] = src[2];
+            result[3] = src[3];
+            break;
+
+        case LOGICOP_OR_REVERSE:
+            // s | ~d
+            result[0] = OR(XOR(dst[0], VIMMED1(0xFFFFFFFF)), src[0]);
+            result[1] = OR(XOR(dst[1], VIMMED1(0xFFFFFFFF)), src[1]);
+            result[2] = OR(XOR(dst[2], VIMMED1(0xFFFFFFFF)), src[2]);
+            result[3] = OR(XOR(dst[3], VIMMED1(0xFFFFFFFF)), src[3]);
+            break;
+
+        case LOGICOP_OR:
+            // s | d
+            result[0] = OR(src[0], dst[0]);
+            result[1] = OR(src[1], dst[1]);
+            result[2] = OR(src[2], dst[2]);
+            result[3] = OR(src[3], dst[3]);
+            break;
+
+        case LOGICOP_SET:
+            result[0] = VIMMED1(0xFFFFFFFF);
+            result[1] = VIMMED1(0xFFFFFFFF);
+            result[2] = VIMMED1(0xFFFFFFFF);
+            result[3] = VIMMED1(0xFFFFFFFF);
+            break;
+
+        default:
+            SWR_ASSERT(false, "Unsupported logic operation: %d", logicOp);
+            result[0] = result[1] = result[2] = result[3] = VIMMED1(0.0f);
+            break;
+        }
+    }
+
+    void AlphaTest(const BLEND_COMPILE_STATE& state, Value* pBlendState, Value* pAlpha, Value* ppMask)
+    {
+        // load uint32_t reference
+        Value* pRef = VBROADCAST(LOAD(pBlendState, { 0, SWR_BLEND_STATE_alphaTestReference }));
+
+        Value* pTest = nullptr;
+        if (state.alphaTestFormat == ALPHA_TEST_UNORM8)
+        {
+            // convert float alpha to unorm8
+            Value* pAlphaU8 = FMUL(pAlpha, VIMMED1(256.0f));
+            pAlphaU8 = FP_TO_UI(pAlphaU8, mSimdInt32Ty);
+
+            // compare
+            switch (state.alphaTestFunction)
+            {
+            case ZFUNC_ALWAYS:  pTest = VIMMED1(true); break;
+            case ZFUNC_NEVER:   pTest = VIMMED1(false); break;
+            case ZFUNC_LT:      pTest = ICMP_ULT(pAlphaU8, pRef); break;
+            case ZFUNC_EQ:      pTest = ICMP_EQ(pAlphaU8, pRef); break;
+            case ZFUNC_LE:      pTest = ICMP_ULE(pAlphaU8, pRef); break;
+            case ZFUNC_GT:      pTest = ICMP_UGT(pAlphaU8, pRef); break;
+            case ZFUNC_NE:      pTest = ICMP_NE(pAlphaU8, pRef); break;
+            case ZFUNC_GE:      pTest = ICMP_UGE(pAlphaU8, pRef); break;
+            default:
+                SWR_ASSERT(false, "Invalid alpha test function");
+                break;
+            }
+        }
+        else
+        {
+            // cast ref to float
+            pRef = BITCAST(pRef, mSimdFP32Ty);
+
+            // compare
+            switch (state.alphaTestFunction)
+            {
+            case ZFUNC_ALWAYS:  pTest = VIMMED1(true); break;
+            case ZFUNC_NEVER:   pTest = VIMMED1(false); break;
+            case ZFUNC_LT:      pTest = FCMP_OLT(pAlpha, pRef); break;
+            case ZFUNC_EQ:      pTest = FCMP_OEQ(pAlpha, pRef); break;
+            case ZFUNC_LE:      pTest = FCMP_OLE(pAlpha, pRef); break;
+            case ZFUNC_GT:      pTest = FCMP_OGT(pAlpha, pRef); break;
+            case ZFUNC_NE:      pTest = FCMP_ONE(pAlpha, pRef); break;
+            case ZFUNC_GE:      pTest = FCMP_OGE(pAlpha, pRef); break;
+            default:
+                SWR_ASSERT(false, "Invalid alpha test function");
+                break;
+            }
+        }
+
+        // load current mask
+        Value* pMask = LOAD(ppMask);
+
+        // convert to int1 mask
+        pMask = MASK(pMask);
+
+        // and with alpha test result
+        pMask = AND(pMask, pTest);
+
+        // convert back to vector mask
+        pMask = VMASK(pMask);
+
+        // store new mask
+        STORE(pMask, ppMask);
+    }
+
+    Function* Create(const BLEND_COMPILE_STATE& state)
+    {
+        static std::size_t jitNum = 0;
+
+        std::stringstream fnName("BlendShader", std::ios_base::in | std::ios_base::out | std::ios_base::ate);
+        fnName << jitNum++;
+
+        // blend function signature
+        //typedef void(*PFN_BLEND_JIT_FUNC)(const SWR_BLEND_STATE*, simdvector&, simdvector&, uint32_t, BYTE*, simdvector&, simdscalari*, simdscalari*);
+
+        std::vector<Type*> args{
+            PointerType::get(Gen_SWR_BLEND_STATE(JM()), 0), // SWR_BLEND_STATE*
+            PointerType::get(mSimdFP32Ty, 0),               // simdvector& src
+            PointerType::get(mSimdFP32Ty, 0),               // simdvector& src1
+            Type::getInt32Ty(JM()->mContext),               // sampleNum
+            PointerType::get(mSimdFP32Ty, 0),               // uint8_t* pDst
+            PointerType::get(mSimdFP32Ty, 0),               // simdvector& result
+            PointerType::get(mSimdInt32Ty, 0),              // simdscalari* oMask
+            PointerType::get(mSimdInt32Ty, 0),              // simdscalari* pMask
+        };
+
+        FunctionType* fTy = FunctionType::get(IRB()->getVoidTy(), args, false);
+        Function* blendFunc = Function::Create(fTy, GlobalValue::ExternalLinkage, fnName.str(), JM()->mpCurrentModule);
+
+        BasicBlock* entry = BasicBlock::Create(JM()->mContext, "entry", blendFunc);
+
+        IRB()->SetInsertPoint(entry);
+
+        // arguments
+        auto argitr = blendFunc->getArgumentList().begin();
+        Value* pBlendState = &*argitr++;
+        pBlendState->setName("pBlendState");
+        Value* pSrc = &*argitr++;
+        pSrc->setName("src");
+        Value* pSrc1 = &*argitr++;
+        pSrc1->setName("src1");
+        Value* sampleNum = &*argitr++;
+        sampleNum->setName("sampleNum");
+        Value* pDst = &*argitr++;
+        pDst->setName("pDst");
+        Value* pResult = &*argitr++;
+        pResult->setName("result");
+        Value* ppoMask = &*argitr++;
+        ppoMask->setName("ppoMask");
+        Value* ppMask = &*argitr++;
+        ppMask->setName("pMask");
+
+        static_assert(KNOB_COLOR_HOT_TILE_FORMAT == R32G32B32A32_FLOAT, "Unsupported hot tile format");
+        Value* dst[4];
+        Value* constantColor[4];
+        Value* src[4];
+        Value* src1[4];
+        Value* result[4];
+        for (uint32_t i = 0; i < 4; ++i)
+        {
+            // load hot tile
+            dst[i] = LOAD(pDst, { i });
+
+            // load constant color
+            constantColor[i] = VBROADCAST(LOAD(pBlendState, { 0, SWR_BLEND_STATE_constantColor, i }));
+
+            // load src
+            src[i] = LOAD(pSrc, { i });
+
+            // load src1
+            src1[i] = LOAD(pSrc1, { i });
+        }
+        Value* currentMask = VIMMED1(-1);
+        if(state.desc.alphaToCoverageEnable)
+        {
+            currentMask = FP_TO_SI(FMUL(src[3], VBROADCAST(C((float)state.desc.numSamples))), mSimdInt32Ty);
+        }
+
+        // alpha test
+        if (state.desc.alphaTestEnable)
+        {
+            AlphaTest(state, pBlendState, src[3], ppMask);
+        }
+
+        // color blend
+        if (state.blendState.blendEnable)
+        {
+            // clamp sources
+            Clamp(state.format, src);
+            Clamp(state.format, src1);
+            Clamp(state.format, dst);
+            Clamp(state.format, constantColor);
+
+            // apply defaults to hottile contents to take into account missing components
+            ApplyDefaults(state.format, dst);
+
+            // Force defaults for unused 'X' components
+            ApplyUnusedDefaults(state.format, dst);
+
+            // Quantize low precision components
+            Quantize(state.format, dst);
+
+            // special case clamping for R11G11B10_float which has no sign bit
+            if (state.format == R11G11B10_FLOAT)
+            {
+                dst[0] = VMAXPS(dst[0], VIMMED1(0.0f));
+                dst[1] = VMAXPS(dst[1], VIMMED1(0.0f));
+                dst[2] = VMAXPS(dst[2], VIMMED1(0.0f));
+                dst[3] = VMAXPS(dst[3], VIMMED1(0.0f));
+            }
+
+            Value* srcFactor[4];
+            Value* dstFactor[4];
+            if (state.desc.independentAlphaBlendEnable)
+            {
+                GenerateBlendFactor<true, false>(state.blendState.sourceBlendFactor, constantColor, src, src1, dst, srcFactor);
+                GenerateBlendFactor<false, true>(state.blendState.sourceAlphaBlendFactor, constantColor, src, src1, dst, srcFactor);
+
+                GenerateBlendFactor<true, false>(state.blendState.destBlendFactor, constantColor, src, src1, dst, dstFactor);
+                GenerateBlendFactor<false, true>(state.blendState.destAlphaBlendFactor, constantColor, src, src1, dst, dstFactor);
+
+                BlendFunc<true, false>(state.blendState.colorBlendFunc, src, srcFactor, dst, dstFactor, result);
+                BlendFunc<false, true>(state.blendState.alphaBlendFunc, src, srcFactor, dst, dstFactor, result);
+            }
+            else
+            {
+                GenerateBlendFactor<true, true>(state.blendState.sourceBlendFactor, constantColor, src, src1, dst, srcFactor);
+                GenerateBlendFactor<true, true>(state.blendState.destBlendFactor, constantColor, src, src1, dst, dstFactor);
+
+                BlendFunc<true, true>(state.blendState.colorBlendFunc, src, srcFactor, dst, dstFactor, result);
+            }
+
+            // store results out
+            for (uint32_t i = 0; i < 4; ++i)
+            {
+                STORE(result[i], pResult, { i });
+            }
+        }
+        
+        if(state.blendState.logicOpEnable)
+        {
+            const SWR_FORMAT_INFO& info = GetFormatInfo(state.format);
+            SWR_ASSERT(info.type[0] == SWR_TYPE_UINT);
+            Value* vMask[4];
+            for(uint32_t i = 0; i < 4; i++)
+            {
+                switch(info.bpc[i])
+                {
+                case 0: vMask[i] = VIMMED1(0x00000000); break;
+                case 2: vMask[i] = VIMMED1(0x00000003); break;
+                case 5: vMask[i] = VIMMED1(0x0000001F); break;
+                case 6: vMask[i] = VIMMED1(0x0000003F); break;
+                case 8: vMask[i] = VIMMED1(0x000000FF); break;
+                case 10: vMask[i] = VIMMED1(0x000003FF); break;
+                case 11: vMask[i] = VIMMED1(0x000007FF); break;
+                case 16: vMask[i] = VIMMED1(0x0000FFFF); break;
+                case 24: vMask[i] = VIMMED1(0x00FFFFFF); break;
+                case 32: vMask[i] = VIMMED1(0xFFFFFFFF); break;
+                default:
+                    vMask[i] = VIMMED1(0x0);
+                    SWR_ASSERT(0, "Unsupported bpc for logic op\n");
+                    break;
+                }
+                src[i] = BITCAST(src[i], mSimdInt32Ty);//, vMask[i]);
+                dst[i] = BITCAST(dst[i], mSimdInt32Ty);
+            }
+
+            LogicOpFunc(state.blendState.logicOpFunc, src, dst, result);
+
+            // store results out
+            for(uint32_t i = 0; i < 4; ++i)
+            {
+                // clear upper bits from PS output not in RT format after doing logic op
+                result[i] = AND(result[i], vMask[i]);
+
+                STORE(BITCAST(result[i], mSimdFP32Ty), pResult, {i});
+            }
+        }
+
+        if(state.desc.oMaskEnable)
+        {
+            assert(!(state.desc.alphaToCoverageEnable));
+            // load current mask
+            Value* oMask = LOAD(ppoMask);
+            Value* sampleMasked = VBROADCAST(SHL(C(1), sampleNum));
+            oMask = AND(oMask, sampleMasked);
+            currentMask = AND(oMask, currentMask);
+        }
+
+        if(state.desc.sampleMaskEnable)
+        {
+            Value* sampleMask = LOAD(pBlendState, { 0, SWR_BLEND_STATE_sampleMask});
+            Value* sampleMasked = SHL(C(1), sampleNum);
+            sampleMask = AND(sampleMask, sampleMasked);
+            sampleMask = VBROADCAST(ICMP_SGT(sampleMask, C(0)));
+            sampleMask = S_EXT(sampleMask, mSimdInt32Ty);
+            currentMask = AND(sampleMask, currentMask);
+        }
+
+        if(state.desc.sampleMaskEnable || state.desc.alphaToCoverageEnable ||
+           state.desc.oMaskEnable)
+        {
+            // load current mask
+            Value* pMask = LOAD(ppMask);
+            currentMask = S_EXT(ICMP_SGT(currentMask, VBROADCAST(C(0))), mSimdInt32Ty);
+            Value* outputMask = AND(pMask, currentMask);
+            // store new mask
+            STORE(outputMask, GEP(ppMask, C(0)));
+        }
+
+        RET_VOID();
+
+        JitManager::DumpToFile(blendFunc, "");
+
+        FunctionPassManager passes(JM()->mpCurrentModule);
+        passes.add(createBreakCriticalEdgesPass());
+        passes.add(createCFGSimplificationPass());
+        passes.add(createEarlyCSEPass());
+        passes.add(createPromoteMemoryToRegisterPass());
+        passes.add(createCFGSimplificationPass());
+        passes.add(createEarlyCSEPass());
+        passes.add(createInstructionCombiningPass());
+        passes.add(createInstructionSimplifierPass());
+        passes.add(createConstantPropagationPass());
+        passes.add(createSCCPPass());
+        passes.add(createAggressiveDCEPass());
+
+        passes.run(*blendFunc);
+
+        JitManager::DumpToFile(blendFunc, "optimized");
+
+        return blendFunc;
+    }
+};
+
+//////////////////////////////////////////////////////////////////////////
+/// @brief JITs from fetch shader IR
+/// @param hJitMgr - JitManager handle
+/// @param func   - LLVM function IR
+/// @return PFN_FETCH_FUNC - pointer to fetch code
+PFN_BLEND_JIT_FUNC JitBlendFunc(HANDLE hJitMgr, const HANDLE hFunc)
+{
+    const llvm::Function *func = (const llvm::Function*)hFunc;
+    JitManager* pJitMgr = reinterpret_cast<JitManager*>(hJitMgr);
+    PFN_BLEND_JIT_FUNC pfnBlend;
+    pfnBlend = (PFN_BLEND_JIT_FUNC)(pJitMgr->mpExec->getFunctionAddress(func->getName().str()));
+    // MCJIT finalizes modules the first time you JIT code from them. After finalized, you cannot add new IR to the module
+    pJitMgr->mIsModuleFinalized = true;
+
+    return pfnBlend;
+}
+
+//////////////////////////////////////////////////////////////////////////
+/// @brief JIT compiles blend shader
+/// @param hJitMgr - JitManager handle
+/// @param state   - blend state to build function from
+extern "C" PFN_BLEND_JIT_FUNC JITCALL JitCompileBlend(HANDLE hJitMgr, const BLEND_COMPILE_STATE& state)
+{
+    JitManager* pJitMgr = reinterpret_cast<JitManager*>(hJitMgr);
+
+    pJitMgr->SetupNewModule();
+
+    BlendJit theJit(pJitMgr);
+    HANDLE hFunc = theJit.Create(state);
+
+    return JitBlendFunc(hJitMgr, hFunc);
+}