Revert "Pass texture base level to shaders on D3D11"

This reverts commit 3026829e155bd89b5ca5b7b7c5267699b9192557.

Change-Id: I0b4c3f5b1453b993b149423bb1ce407f4918cf54
Reviewed-on: https://chromium-review.googlesource.com/325435
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/renderer/d3d/ProgramD3D.cpp b/src/libANGLE/renderer/d3d/ProgramD3D.cpp
index bb10266..bde3409 100644
--- a/src/libANGLE/renderer/d3d/ProgramD3D.cpp
+++ b/src/libANGLE/renderer/d3d/ProgramD3D.cpp
@@ -22,7 +22,6 @@
 #include "libANGLE/renderer/d3d/ShaderExecutableD3D.h"
 #include "libANGLE/renderer/d3d/VaryingPacking.h"
 #include "libANGLE/renderer/d3d/VertexDataManager.h"
-#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
 
 namespace rx
 {
@@ -488,88 +487,6 @@
     return mFragmentShader;
 }
 
-// SamplerMetadataD3D11 implementation
-
-SamplerMetadataD3D11::SamplerMetadataD3D11()
-    : mSamplerCount(0), mType(gl::SAMPLER_VERTEX), mDirty(false), mSamplerMetadataBuffer(nullptr)
-{
-}
-
-SamplerMetadataD3D11::~SamplerMetadataD3D11()
-{
-    reset();
-}
-
-void SamplerMetadataD3D11::reset()
-{
-    mDirty = false;
-    SafeRelease(mSamplerMetadataBuffer);
-}
-
-void SamplerMetadataD3D11::initData(unsigned int samplerCount, gl::SamplerType type)
-{
-    mSamplerMetadata.resize(samplerCount);
-    mSamplerCount = samplerCount;
-    mType         = type;
-}
-
-void SamplerMetadataD3D11::update(unsigned int samplerIndex, unsigned int baseLevel)
-{
-    if (mSamplerMetadata[samplerIndex].baseLevel[0] != static_cast<int>(baseLevel))
-    {
-        mSamplerMetadata[samplerIndex].baseLevel[0] = static_cast<int>(baseLevel);
-        mDirty                                      = true;
-    }
-}
-
-bool SamplerMetadataD3D11::initBuffer(ID3D11Device *device, ID3D11DeviceContext *deviceContext)
-{
-    D3D11_BUFFER_DESC constantBufferDescription = {0};
-    d3d11::InitConstantBufferDesc(&constantBufferDescription,
-                                  sizeof(dx_SamplerMetadata) * mSamplerCount);
-    HRESULT result =
-        device->CreateBuffer(&constantBufferDescription, nullptr, &mSamplerMetadataBuffer);
-    ASSERT(SUCCEEDED(result));
-    if (FAILED(result))
-    {
-        return false;
-    }
-    if (mType == gl::SAMPLER_VERTEX)
-    {
-        deviceContext->VSSetConstantBuffers(d3d11::RESERVED_CONSTANT_BUFFER_SLOT_SAMPLER_METADATA,
-                                            1, &mSamplerMetadataBuffer);
-    }
-    else
-    {
-        deviceContext->PSSetConstantBuffers(d3d11::RESERVED_CONSTANT_BUFFER_SLOT_SAMPLER_METADATA,
-                                            1, &mSamplerMetadataBuffer);
-    }
-    mDirty = true;
-    return true;
-}
-
-gl::Error SamplerMetadataD3D11::apply(ID3D11Device *device, ID3D11DeviceContext *deviceContext)
-{
-    if (!mSamplerMetadataBuffer && mSamplerCount > 0)
-    {
-        if (!initBuffer(device, deviceContext))
-        {
-            return gl::Error(GL_OUT_OF_MEMORY, "Failed to create shader constant buffer");
-        }
-    }
-    if (mDirty)
-    {
-        ASSERT(mSamplerMetadataBuffer);
-        if (mSamplerMetadataBuffer)
-        {
-            deviceContext->UpdateSubresource(mSamplerMetadataBuffer, 0, nullptr,
-                                             mSamplerMetadata.data(), 16, 0);
-            mDirty = false;
-        }
-    }
-    return gl::Error(GL_NO_ERROR);
-}
-
 // ProgramD3D Implementation
 
 ProgramD3D::VertexExecutable::VertexExecutable(const gl::InputLayout &inputLayout,
@@ -737,29 +654,7 @@
     return GL_TEXTURE_2D;
 }
 
-void ProgramD3D::setSamplerMetadata(gl::SamplerType type,
-                                    unsigned int samplerIndex,
-                                    unsigned int baseLevel)
-{
-    SamplerMetadataD3D11 *metadata = nullptr;
-    switch (type)
-    {
-        case gl::SAMPLER_PIXEL:
-            metadata = &mSamplerMetadataPS;
-            break;
-        case gl::SAMPLER_VERTEX:
-            metadata = &mSamplerMetadataVS;
-            break;
-        default:
-            UNREACHABLE();
-            break;
-    }
-    ASSERT(metadata != nullptr);
-    ASSERT(samplerIndex < getUsedSamplerRange(type));
-    metadata->update(samplerIndex, baseLevel);
-}
-
-GLuint ProgramD3D::getUsedSamplerRange(gl::SamplerType type) const
+GLint ProgramD3D::getUsedSamplerRange(gl::SamplerType type) const
 {
     switch (type)
     {
@@ -769,7 +664,7 @@
             return mUsedVertexSamplerRange;
         default:
             UNREACHABLE();
-            return 0u;
+            return 0;
     }
 }
 
@@ -1063,9 +958,6 @@
     initializeUniformStorage();
     initAttributesByLayout();
 
-    mSamplerMetadataPS.initData(getUsedSamplerRange(gl::SAMPLER_PIXEL), gl::SAMPLER_PIXEL);
-    mSamplerMetadataVS.initData(getUsedSamplerRange(gl::SAMPLER_VERTEX), gl::SAMPLER_VERTEX);
-
     return LinkResult(true, gl::Error(GL_NO_ERROR));
 }
 
@@ -1548,9 +1440,6 @@
 
     defineUniformsAndAssignRegisters();
 
-    mSamplerMetadataPS.initData(getUsedSamplerRange(gl::SAMPLER_PIXEL), gl::SAMPLER_PIXEL);
-    mSamplerMetadataVS.initData(getUsedSamplerRange(gl::SAMPLER_VERTEX), gl::SAMPLER_VERTEX);
-
     gatherTransformFeedbackVaryings(varyingPacking);
 
     LinkResult result = compileProgramExecutables(data, infoLog);
@@ -1675,11 +1564,6 @@
         d3dUniform->dirty = false;
     }
 
-    error = mRenderer->applySamplerMetadata(&mSamplerMetadataVS, mUsedVertexSamplerRange,
-                                            gl::SAMPLER_VERTEX);
-    error = mRenderer->applySamplerMetadata(&mSamplerMetadataPS, mUsedPixelSamplerRange,
-                                            gl::SAMPLER_PIXEL);
-
     return gl::Error(GL_NO_ERROR);
 }
 
@@ -2256,9 +2140,6 @@
     mSamplersPS.clear();
     mSamplersVS.clear();
 
-    mSamplerMetadataPS.reset();
-    mSamplerMetadataVS.reset();
-
     mUsedVertexSamplerRange = 0;
     mUsedPixelSamplerRange  = 0;
     mDirtySamplerMapping    = true;