Add m-esr52 at 52.6.0

1 files changed, 405 insertions, 0 deletions

diff --git a/gfx/angle/src/libANGLE/renderer/d3d/VaryingPacking.cpp b/gfx/angle/src/libANGLE/renderer/d3d/VaryingPacking.cpp
new file mode 100755
index 000000000..eea85fea7
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/d3d/VaryingPacking.cpp
@@ -0,0 +1,405 @@
+//
+// Copyright 2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// VaryingPacking:
+//   Class which describes a mapping from varyings to registers in D3D
+//   for linking between shader stages.
+//
+
+#include "libANGLE/renderer/d3d/VaryingPacking.h"
+
+#include "common/utilities.h"
+#include "compiler/translator/blocklayoutHLSL.h"
+#include "libANGLE/renderer/d3d/DynamicHLSL.h"
+#include "libANGLE/renderer/d3d/ProgramD3D.h"
+
+namespace rx
+{
+
+// Implementation of VaryingPacking::BuiltinVarying
+VaryingPacking::BuiltinVarying::BuiltinVarying() : enabled(false), index(0), systemValue(false)
+{
+}
+
+std::string VaryingPacking::BuiltinVarying::str() const
+{
+    return (systemValue ? semantic : (semantic + Str(index)));
+}
+
+void VaryingPacking::BuiltinVarying::enableSystem(const std::string &systemValueSemantic)
+{
+    enabled     = true;
+    semantic    = systemValueSemantic;
+    systemValue = true;
+}
+
+void VaryingPacking::BuiltinVarying::enable(const std::string &semanticVal, unsigned int indexVal)
+{
+    enabled  = true;
+    semantic = semanticVal;
+    index    = indexVal;
+}
+
+// Implementation of VaryingPacking
+VaryingPacking::VaryingPacking(GLuint maxVaryingVectors)
+    : mRegisterMap(maxVaryingVectors), mBuiltinInfo(SHADER_TYPE_MAX)
+{
+}
+
+// Packs varyings into generic varying registers, using the algorithm from
+// See [OpenGL ES Shading Language 1.00 rev. 17] appendix A section 7 page 111
+// Also [OpenGL ES Shading Language 3.00 rev. 4] Section 11 page 119
+// Returns false if unsuccessful.
+bool VaryingPacking::packVarying(const PackedVarying &packedVarying)
+{
+    unsigned int varyingRows    = 0;
+    unsigned int varyingColumns = 0;
+
+    const auto &varying = *packedVarying.varying;
+
+    // "Non - square matrices of type matCxR consume the same space as a square matrix of type matN
+    // where N is the greater of C and R.Variables of type mat2 occupies 2 complete rows."
+    // Here we are a bit more conservative and allow packing non-square matrices more tightly.
+    // Make sure we use transposed matrix types to count registers correctly.
+    ASSERT(!varying.isStruct());
+    GLenum transposedType = gl::TransposeMatrixType(varying.type);
+    varyingRows           = gl::VariableRowCount(transposedType);
+    varyingColumns        = gl::VariableColumnCount(transposedType);
+
+    // "Arrays of size N are assumed to take N times the size of the base type"
+    varyingRows *= varying.elementCount();
+
+    unsigned int maxVaryingVectors = static_cast<unsigned int>(mRegisterMap.size());
+
+    if (varyingRows > maxVaryingVectors) {
+        return false;
+    }
+
+    // "For 2, 3 and 4 component variables packing is started using the 1st column of the 1st row.
+    // Variables are then allocated to successive rows, aligning them to the 1st column."
+    if (varyingColumns >= 2 && varyingColumns <= 4)
+    {
+        for (unsigned int row = 0; row <= maxVaryingVectors - varyingRows; ++row)
+        {
+            if (isFree(row, 0, varyingRows, varyingColumns))
+            {
+                insert(row, 0, packedVarying);
+                return true;
+            }
+        }
+
+        // "For 2 component variables, when there are no spare rows, the strategy is switched to
+        // using the highest numbered row and the lowest numbered column where the variable will
+        // fit."
+        if (varyingColumns == 2)
+        {
+            for (unsigned int r = maxVaryingVectors - varyingRows + 1; r-- >= 1;)
+            {
+                if (isFree(r, 2, varyingRows, 2))
+                {
+                    insert(r, 2, packedVarying);
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    // "1 component variables have their own packing rule. They are packed in order of size, largest
+    // first. Each variable is placed in the column that leaves the least amount of space in the
+    // column and aligned to the lowest available rows within that column."
+    ASSERT(varyingColumns == 1);
+    unsigned int contiguousSpace[4]     = {0};
+    unsigned int bestContiguousSpace[4] = {0};
+    unsigned int totalSpace[4]          = {0};
+
+    for (unsigned int row = 0; row < maxVaryingVectors; ++row)
+    {
+        for (unsigned int column = 0; column < 4; ++column)
+        {
+            if (mRegisterMap[row][column])
+            {
+                contiguousSpace[column] = 0;
+            }
+            else
+            {
+                contiguousSpace[column]++;
+                totalSpace[column]++;
+
+                if (contiguousSpace[column] > bestContiguousSpace[column])
+                {
+                    bestContiguousSpace[column] = contiguousSpace[column];
+                }
+            }
+        }
+    }
+
+    unsigned int bestColumn = 0;
+    for (unsigned int column = 1; column < 4; ++column)
+    {
+        if (bestContiguousSpace[column] >= varyingRows &&
+            (bestContiguousSpace[bestColumn] < varyingRows ||
+             totalSpace[column] < totalSpace[bestColumn]))
+        {
+            bestColumn = column;
+        }
+    }
+
+    if (bestContiguousSpace[bestColumn] >= varyingRows)
+    {
+        for (unsigned int row = 0; row < maxVaryingVectors; row++)
+        {
+            if (isFree(row, bestColumn, varyingRows, 1))
+            {
+                for (unsigned int arrayIndex = 0; arrayIndex < varyingRows; ++arrayIndex)
+                {
+                    // If varyingRows > 1, it must be an array.
+                    PackedVaryingRegister registerInfo;
+                    registerInfo.packedVarying     = &packedVarying;
+                    registerInfo.registerRow       = row + arrayIndex;
+                    registerInfo.registerColumn    = bestColumn;
+                    registerInfo.varyingArrayIndex = arrayIndex;
+                    registerInfo.varyingRowIndex = 0;
+                    mRegisterList.push_back(registerInfo);
+                    mRegisterMap[row + arrayIndex][bestColumn] = true;
+                }
+                break;
+            }
+        }
+        return true;
+    }
+
+    return false;
+}
+
+bool VaryingPacking::isFree(unsigned int registerRow,
+                            unsigned int registerColumn,
+                            unsigned int varyingRows,
+                            unsigned int varyingColumns) const
+{
+    for (unsigned int row = 0; row < varyingRows; ++row)
+    {
+        ASSERT(registerRow + row < mRegisterMap.size());
+        for (unsigned int column = 0; column < varyingColumns; ++column)
+        {
+            ASSERT(registerColumn + column < 4);
+            if (mRegisterMap[registerRow + row][registerColumn + column])
+            {
+                return false;
+            }
+        }
+    }
+
+    return true;
+}
+
+void VaryingPacking::insert(unsigned int registerRow,
+                            unsigned int registerColumn,
+                            const PackedVarying &packedVarying)
+{
+    unsigned int varyingRows    = 0;
+    unsigned int varyingColumns = 0;
+
+    const auto &varying = *packedVarying.varying;
+    ASSERT(!varying.isStruct());
+    GLenum transposedType = gl::TransposeMatrixType(varying.type);
+    varyingRows           = gl::VariableRowCount(transposedType);
+    varyingColumns        = gl::VariableColumnCount(transposedType);
+
+    PackedVaryingRegister registerInfo;
+    registerInfo.packedVarying  = &packedVarying;
+    registerInfo.registerColumn = registerColumn;
+
+    for (unsigned int arrayElement = 0; arrayElement < varying.elementCount(); ++arrayElement)
+    {
+        for (unsigned int varyingRow = 0; varyingRow < varyingRows; ++varyingRow)
+        {
+            registerInfo.registerRow       = registerRow + (arrayElement * varyingRows) + varyingRow;
+            registerInfo.varyingRowIndex   = varyingRow;
+            registerInfo.varyingArrayIndex = arrayElement;
+            mRegisterList.push_back(registerInfo);
+
+            for (unsigned int columnIndex = 0; columnIndex < varyingColumns; ++columnIndex)
+            {
+                mRegisterMap[registerInfo.registerRow][registerColumn + columnIndex] = true;
+            }
+        }
+    }
+}
+
+// See comment on packVarying.
+bool VaryingPacking::packVaryings(gl::InfoLog &infoLog,
+                                  const std::vector<PackedVarying> &packedVaryings,
+                                  const std::vector<std::string> &transformFeedbackVaryings)
+{
+    std::set<std::string> uniqueVaryingNames;
+
+    // "Variables are packed into the registers one at a time so that they each occupy a contiguous
+    // subrectangle. No splitting of variables is permitted."
+    for (const PackedVarying &packedVarying : packedVaryings)
+    {
+        const auto &varying = *packedVarying.varying;
+
+        // Do not assign registers to built-in or unreferenced varyings
+        if (varying.isBuiltIn() || (!varying.staticUse && !packedVarying.isStructField()))
+        {
+            continue;
+        }
+
+        ASSERT(!varying.isStruct());
+        ASSERT(uniqueVaryingNames.count(varying.name) == 0);
+
+        if (packVarying(packedVarying))
+        {
+            uniqueVaryingNames.insert(varying.name);
+        }
+        else
+        {
+            infoLog << "Could not pack varying " << varying.name;
+            return false;
+        }
+    }
+
+    for (const std::string &transformFeedbackVaryingName : transformFeedbackVaryings)
+    {
+        if (transformFeedbackVaryingName.compare(0, 3, "gl_") == 0)
+        {
+            // do not pack builtin XFB varyings
+            continue;
+        }
+
+        bool found = false;
+        for (const PackedVarying &packedVarying : packedVaryings)
+        {
+            const auto &varying = *packedVarying.varying;
+
+            // Make sure transform feedback varyings aren't optimized out.
+            if (uniqueVaryingNames.count(transformFeedbackVaryingName) > 0)
+            {
+                found = true;
+                break;
+            }
+
+            if (transformFeedbackVaryingName == varying.name)
+            {
+                if (!packVarying(packedVarying))
+                {
+                    infoLog << "Could not pack varying " << varying.name;
+                    return false;
+                }
+
+                found = true;
+                break;
+            }
+        }
+
+        if (!found)
+        {
+            infoLog << "Transform feedback varying " << transformFeedbackVaryingName
+                    << " does not exist in the vertex shader.";
+            return false;
+        }
+    }
+
+    // Sort the packed register list
+    std::sort(mRegisterList.begin(), mRegisterList.end());
+
+    // Assign semantic indices
+    for (unsigned int semanticIndex = 0;
+         semanticIndex < static_cast<unsigned int>(mRegisterList.size()); ++semanticIndex)
+    {
+        mRegisterList[semanticIndex].semanticIndex = semanticIndex;
+    }
+
+    return true;
+}
+
+unsigned int VaryingPacking::getRegisterCount() const
+{
+    unsigned int count = 0;
+
+    for (const Register &reg : mRegisterMap)
+    {
+        if (reg.data[0] || reg.data[1] || reg.data[2] || reg.data[3])
+        {
+            ++count;
+        }
+    }
+
+    if (mBuiltinInfo[SHADER_PIXEL].glFragCoord.enabled)
+    {
+        ++count;
+    }
+
+    if (mBuiltinInfo[SHADER_PIXEL].glPointCoord.enabled)
+    {
+        ++count;
+    }
+
+    return count;
+}
+
+void VaryingPacking::enableBuiltins(ShaderType shaderType,
+                                    const ProgramD3DMetadata &programMetadata)
+{
+    int majorShaderModel = programMetadata.getRendererMajorShaderModel();
+    bool position        = programMetadata.usesTransformFeedbackGLPosition();
+    bool fragCoord       = programMetadata.usesFragCoord();
+    bool pointCoord = shaderType == SHADER_VERTEX ? programMetadata.addsPointCoordToVertexShader()
+                                                  : programMetadata.usesPointCoord();
+    bool pointSize                  = programMetadata.usesSystemValuePointSize();
+    bool hlsl4                      = (majorShaderModel >= 4);
+    const std::string &userSemantic = GetVaryingSemantic(majorShaderModel, pointSize);
+
+    unsigned int reservedSemanticIndex = getMaxSemanticIndex();
+
+    BuiltinInfo *builtins = &mBuiltinInfo[shaderType];
+
+    if (hlsl4)
+    {
+        builtins->dxPosition.enableSystem("SV_Position");
+    }
+    else if (shaderType == SHADER_PIXEL)
+    {
+        builtins->dxPosition.enableSystem("VPOS");
+    }
+    else
+    {
+        builtins->dxPosition.enableSystem("POSITION");
+    }
+
+    if (position)
+    {
+        builtins->glPosition.enable(userSemantic, reservedSemanticIndex++);
+    }
+
+    if (fragCoord)
+    {
+        builtins->glFragCoord.enable(userSemantic, reservedSemanticIndex++);
+    }
+
+    if (pointCoord)
+    {
+        // SM3 reserves the TEXCOORD semantic for point sprite texcoords (gl_PointCoord)
+        // In D3D11 we manually compute gl_PointCoord in the GS.
+        if (hlsl4)
+        {
+            builtins->glPointCoord.enable(userSemantic, reservedSemanticIndex++);
+        }
+        else
+        {
+            builtins->glPointCoord.enable("TEXCOORD", 0);
+        }
+    }
+
+    // Special case: do not include PSIZE semantic in HLSL 3 pixel shaders
+    if (pointSize && (shaderType != SHADER_PIXEL || hlsl4))
+    {
+        builtins->glPointSize.enableSystem("PSIZE");
+    }
+}
+
+}  // namespace rx