1 files changed, 73 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/gl/SamplerGL.cpp b/gfx/angle/src/libANGLE/renderer/gl/SamplerGL.cpp
new file mode 100755
index 000000000..2a6d81583
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/gl/SamplerGL.cpp
@@ -0,0 +1,73 @@
+//
+// Copyright 2014 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.
+//
+
+// SamplerGL.cpp: Defines the rx::SamplerGL class, an implementation of SamplerImpl.
+
+#include "libANGLE/renderer/gl/SamplerGL.h"
+
+#include "libANGLE/renderer/gl/FunctionsGL.h"
+#include "libANGLE/renderer/gl/StateManagerGL.h"
+
+namespace
+{
+
+template <typename T>
+static inline void SyncSamplerStateMember(const rx::FunctionsGL *functions,
+                                          GLuint sampler,
+                                          const gl::SamplerState &newState,
+                                          gl::SamplerState &curState,
+                                          GLenum name,
+                                          T(gl::SamplerState::*samplerMember))
+{
+    if (curState.*samplerMember != newState.*samplerMember)
+    {
+        curState.*samplerMember = newState.*samplerMember;
+        functions->samplerParameterf(sampler, name, static_cast<GLfloat>(curState.*samplerMember));
+    }
+}
+}
+
+namespace rx
+{
+
+SamplerGL::SamplerGL(const FunctionsGL *functions, StateManagerGL *stateManager)
+    : SamplerImpl(),
+      mFunctions(functions),
+      mStateManager(stateManager),
+      mAppliedSamplerState(),
+      mSamplerID(0)
+{
+    mFunctions->genSamplers(1, &mSamplerID);
+}
+
+SamplerGL::~SamplerGL()
+{
+    mStateManager->deleteSampler(mSamplerID);
+    mSamplerID = 0;
+}
+
+void SamplerGL::syncState(const gl::SamplerState &samplerState) const
+{
+    // clang-format off
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MIN_FILTER, &gl::SamplerState::minFilter);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MAG_FILTER, &gl::SamplerState::magFilter);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_WRAP_S, &gl::SamplerState::wrapS);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_WRAP_T, &gl::SamplerState::wrapT);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_WRAP_R, &gl::SamplerState::wrapR);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MAX_ANISOTROPY_EXT, &gl::SamplerState::maxAnisotropy);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MIN_LOD, &gl::SamplerState::minLod);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MAX_LOD, &gl::SamplerState::maxLod);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_COMPARE_MODE, &gl::SamplerState::compareMode);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_COMPARE_FUNC, &gl::SamplerState::compareFunc);
+    SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_SRGB_DECODE_EXT, &gl::SamplerState::sRGBDecode);
+    // clang-format on
+}
+
+GLuint SamplerGL::getSamplerID() const
+{
+    return mSamplerID;
+}
+}