created GrMtlPipelineStateDataManager for metal gpu backend

Bug: skia:
Change-Id: I630b1fc2e3a4195b8df8b04a02be8fc95bb9c4fe
Reviewed-on: https://skia-review.googlesource.com/145329
Commit-Queue: Timothy Liang <timliang@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/gn/gpu.gni b/gn/gpu.gni
index 7178147..4139c4c 100644
--- a/gn/gpu.gni
+++ b/gn/gpu.gni
@@ -639,6 +639,8 @@
   "$_src/gpu/mtl/GrMtlPipelineState.mm",
   "$_src/gpu/mtl/GrMtlPipelineStateBuilder.h",
   "$_src/gpu/mtl/GrMtlPipelineStateBuilder.mm",
+  "$_src/gpu/mtl/GrMtlPipelineStateDataManager.h",
+  "$_src/gpu/mtl/GrMtlPipelineStateDataManager.mm",
   "$_src/gpu/mtl/GrMtlRenderTarget.h",
   "$_src/gpu/mtl/GrMtlRenderTarget.mm",
   "$_src/gpu/mtl/GrMtlResourceProvider.h",
diff --git a/src/gpu/mtl/GrMtlPipelineStateBuilder.mm b/src/gpu/mtl/GrMtlPipelineStateBuilder.mm
index f4f1807..daa29a5 100644
--- a/src/gpu/mtl/GrMtlPipelineStateBuilder.mm
+++ b/src/gpu/mtl/GrMtlPipelineStateBuilder.mm
@@ -1,9 +1,9 @@
 /*
-* Copyright 2018 Google Inc.
-*
-* Use of this source code is governed by a BSD-style license that can be
-* found in the LICENSE file.
-*/
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
 
 #include "GrMtlPipelineStateBuilder.h"
 
diff --git a/src/gpu/mtl/GrMtlPipelineStateDataManager.h b/src/gpu/mtl/GrMtlPipelineStateDataManager.h
new file mode 100644
index 0000000..3780d89
--- /dev/null
+++ b/src/gpu/mtl/GrMtlPipelineStateDataManager.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrMtlPipelineStateDataManager_DEFINED
+#define GrMtlPipelineStateDataManager_DEFINED
+
+#include "glsl/GrGLSLProgramDataManager.h"
+#include "GrMtlUniformHandler.h"
+#include "SkAutoMalloc.h"
+
+class GrMtlBuffer;
+class GrMtlGpu;
+
+class GrMtlPipelineStateDataManager : public GrGLSLProgramDataManager {
+public:
+    typedef GrMtlUniformHandler::UniformInfoArray UniformInfoArray;
+
+    GrMtlPipelineStateDataManager(const UniformInfoArray&,
+                                  uint32_t geometryUniformSize,
+                                  uint32_t fragmentUniformSize);
+
+    void set1i(UniformHandle, int32_t) const override;
+    void set1iv(UniformHandle, int arrayCount, const int32_t v[]) const override;
+    void set1f(UniformHandle, float v0) const override;
+    void set1fv(UniformHandle, int arrayCount, const float v[]) const override;
+    void set2f(UniformHandle, float, float) const override;
+    void set2fv(UniformHandle, int arrayCount, const float v[]) const override;
+    void set3f(UniformHandle, float, float, float) const override;
+    void set3fv(UniformHandle, int arrayCount, const float v[]) const override;
+    void set4f(UniformHandle, float, float, float, float) const override;
+    void set4fv(UniformHandle, int arrayCount, const float v[]) const override;
+    // matrices are column-major, the first two upload a single matrix, the latter two upload
+    // arrayCount matrices into a uniform array.
+    void setMatrix2f(UniformHandle, const float matrix[]) const override;
+    void setMatrix3f(UniformHandle, const float matrix[]) const override;
+    void setMatrix4f(UniformHandle, const float matrix[]) const override;
+    void setMatrix2fv(UniformHandle, int arrayCount, const float matrices[]) const override;
+    void setMatrix3fv(UniformHandle, int arrayCount, const float matrices[]) const override;
+    void setMatrix4fv(UniformHandle, int arrayCount, const float matrices[]) const override;
+
+    // for nvpr only
+    void setPathFragmentInputTransform(VaryingHandle u, int components,
+                                       const SkMatrix& matrix) const override {
+        SK_ABORT("Only supported in NVPR, which is not in Metal");
+    }
+
+    void uploadUniformBuffers(GrMtlGpu* gpu,
+                              GrMtlBuffer* geometryBuffer,
+                              GrMtlBuffer* fragmentBuffer) const;
+
+private:
+    struct Uniform {
+        uint32_t fBinding;
+        uint32_t fOffset;
+        SkDEBUGCODE(
+            GrSLType    fType;
+            int         fArrayCount;
+        );
+    };
+
+    template<int N> inline void setMatrices(UniformHandle, int arrayCount,
+                                            const float matrices[]) const;
+
+    void* getBufferPtrAndMarkDirty(const Uniform& uni) const;
+
+    uint32_t fGeometryUniformSize;
+    uint32_t fFragmentUniformSize;
+
+    SkTArray<Uniform, true> fUniforms;
+
+    mutable SkAutoMalloc fGeometryUniformData;
+    mutable SkAutoMalloc fFragmentUniformData;
+    mutable bool         fGeometryUniformsDirty;
+    mutable bool         fFragmentUniformsDirty;
+};
+
+#endif
diff --git a/src/gpu/mtl/GrMtlPipelineStateDataManager.mm b/src/gpu/mtl/GrMtlPipelineStateDataManager.mm
new file mode 100644
index 0000000..c0bf5ff
--- /dev/null
+++ b/src/gpu/mtl/GrMtlPipelineStateDataManager.mm
@@ -0,0 +1,288 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrMtlPipelineStateDataManager.h"
+
+#include "GrMtlBuffer.h"
+#include "GrMtlGpu.h"
+
+GrMtlPipelineStateDataManager::GrMtlPipelineStateDataManager(const UniformInfoArray& uniforms,
+                                                             uint32_t geometryUniformSize,
+                                                             uint32_t fragmentUniformSize)
+        : fGeometryUniformSize(geometryUniformSize)
+        , fFragmentUniformSize(fragmentUniformSize)
+        , fGeometryUniformsDirty(false)
+        , fFragmentUniformsDirty(false) {
+    fGeometryUniformData.reset(geometryUniformSize);
+    fFragmentUniformData.reset(fragmentUniformSize);
+    int count = uniforms.count();
+    fUniforms.push_back_n(count);
+    // We must add uniforms in same order is the UniformInfoArray so that UniformHandles already
+    // owned by other objects will still match up here.
+    for (int i = 0; i < count; i++) {
+        Uniform& uniform = fUniforms[i];
+        const GrMtlUniformHandler::UniformInfo uniformInfo = uniforms[i];
+        SkASSERT(GrShaderVar::kNonArray == uniformInfo.fVariable.getArrayCount() ||
+                 uniformInfo.fVariable.getArrayCount() > 0);
+        SkDEBUGCODE(
+            uniform.fArrayCount = uniformInfo.fVariable.getArrayCount();
+            uniform.fType = uniformInfo.fVariable.getType();
+        );
+
+        if (!(kFragment_GrShaderFlag & uniformInfo.fVisibility)) {
+            uniform.fBinding = GrMtlUniformHandler::kGeometryBinding;
+        } else {
+            SkASSERT(kFragment_GrShaderFlag == uniformInfo.fVisibility);
+            uniform.fBinding = GrMtlUniformHandler::kFragBinding;
+        }
+        uniform.fOffset = uniformInfo.fUBOffset;
+    }
+}
+
+void* GrMtlPipelineStateDataManager::getBufferPtrAndMarkDirty(const Uniform& uni) const {
+    void* buffer;
+    if (GrMtlUniformHandler::kGeometryBinding == uni.fBinding) {
+        buffer = fGeometryUniformData.get();
+        fGeometryUniformsDirty = true;
+    } else {
+        SkASSERT(GrMtlUniformHandler::kFragBinding == uni.fBinding);
+        buffer = fFragmentUniformData.get();
+        fFragmentUniformsDirty = true;
+    }
+    buffer = static_cast<char*>(buffer)+uni.fOffset;
+    return buffer;
+}
+
+void GrMtlPipelineStateDataManager::set1i(UniformHandle u, int32_t i) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kInt_GrSLType || uni.fType == kShort_GrSLType);
+    SkASSERT(GrShaderVar::kNonArray == uni.fArrayCount);
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    memcpy(buffer, &i, sizeof(int32_t));
+}
+
+void GrMtlPipelineStateDataManager::set1iv(UniformHandle u,
+                                           int arrayCount,
+                                           const int32_t v[]) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kInt_GrSLType || uni.fType == kShort_GrSLType);
+    SkASSERT(arrayCount > 0);
+    SkASSERT(arrayCount <= uni.fArrayCount ||
+             (1 == arrayCount && GrShaderVar::kNonArray == uni.fArrayCount));
+
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(int32_t) == 4);
+    for (int i = 0; i < arrayCount; ++i) {
+        const int32_t* curVec = &v[i];
+        memcpy(buffer, curVec, sizeof(int32_t));
+        buffer = static_cast<char*>(buffer) + 4*sizeof(int32_t);
+    }
+}
+
+void GrMtlPipelineStateDataManager::set1f(UniformHandle u, float v0) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat_GrSLType || uni.fType == kHalf_GrSLType);
+    SkASSERT(GrShaderVar::kNonArray == uni.fArrayCount);
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(float) == 4);
+    memcpy(buffer, &v0, sizeof(float));
+}
+
+void GrMtlPipelineStateDataManager::set1fv(UniformHandle u,
+                                           int arrayCount,
+                                           const float v[]) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat_GrSLType || uni.fType == kHalf_GrSLType);
+    SkASSERT(arrayCount > 0);
+    SkASSERT(arrayCount <= uni.fArrayCount ||
+             (1 == arrayCount && GrShaderVar::kNonArray == uni.fArrayCount));
+
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(float) == 4);
+    for (int i = 0; i < arrayCount; ++i) {
+        const float* curVec = &v[i];
+        memcpy(buffer, curVec, sizeof(float));
+        buffer = static_cast<char*>(buffer) + 4*sizeof(float);
+    }
+}
+
+void GrMtlPipelineStateDataManager::set2f(UniformHandle u, float v0, float v1) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat2_GrSLType || uni.fType == kHalf2_GrSLType);
+    SkASSERT(GrShaderVar::kNonArray == uni.fArrayCount);
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(float) == 4);
+    float v[2] = { v0, v1 };
+    memcpy(buffer, v, 2 * sizeof(float));
+}
+
+void GrMtlPipelineStateDataManager::set2fv(UniformHandle u,
+                                           int arrayCount,
+                                           const float v[]) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat2_GrSLType || uni.fType == kHalf2_GrSLType);
+    SkASSERT(arrayCount > 0);
+    SkASSERT(arrayCount <= uni.fArrayCount ||
+             (1 == arrayCount && GrShaderVar::kNonArray == uni.fArrayCount));
+
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(float) == 4);
+    for (int i = 0; i < arrayCount; ++i) {
+        const float* curVec = &v[2 * i];
+        memcpy(buffer, curVec, 2 * sizeof(float));
+        buffer = static_cast<char*>(buffer) + 4*sizeof(float);
+    }
+}
+
+void GrMtlPipelineStateDataManager::set3f(UniformHandle u, float v0, float v1, float v2) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat3_GrSLType || uni.fType == kHalf3_GrSLType);
+    SkASSERT(GrShaderVar::kNonArray == uni.fArrayCount);
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(float) == 4);
+    float v[3] = { v0, v1, v2 };
+    memcpy(buffer, v, 3 * sizeof(float));
+}
+
+void GrMtlPipelineStateDataManager::set3fv(UniformHandle u,
+                                           int arrayCount,
+                                           const float v[]) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat3_GrSLType || uni.fType == kHalf3_GrSLType);
+    SkASSERT(arrayCount > 0);
+    SkASSERT(arrayCount <= uni.fArrayCount ||
+             (1 == arrayCount && GrShaderVar::kNonArray == uni.fArrayCount));
+
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(float) == 4);
+    for (int i = 0; i < arrayCount; ++i) {
+        const float* curVec = &v[3 * i];
+        memcpy(buffer, curVec, 3 * sizeof(float));
+        buffer = static_cast<char*>(buffer) + 4*sizeof(float);
+    }
+}
+
+void GrMtlPipelineStateDataManager::set4f(UniformHandle u,
+                                          float v0,
+                                          float v1,
+                                          float v2,
+                                          float v3) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat4_GrSLType || uni.fType == kHalf4_GrSLType);
+    SkASSERT(GrShaderVar::kNonArray == uni.fArrayCount);
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(float) == 4);
+    float v[4] = { v0, v1, v2, v3 };
+    memcpy(buffer, v, 4 * sizeof(float));
+}
+
+void GrMtlPipelineStateDataManager::set4fv(UniformHandle u,
+                                           int arrayCount,
+                                           const float v[]) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat4_GrSLType || uni.fType == kHalf4_GrSLType);
+    SkASSERT(arrayCount > 0);
+    SkASSERT(arrayCount <= uni.fArrayCount ||
+             (1 == arrayCount && GrShaderVar::kNonArray == uni.fArrayCount));
+
+    void* buffer = this->getBufferPtrAndMarkDirty(uni);
+    SkASSERT(sizeof(float) == 4);
+    memcpy(buffer, v, arrayCount * 4 * sizeof(float));
+}
+
+void GrMtlPipelineStateDataManager::setMatrix2f(UniformHandle u, const float matrix[]) const {
+    this->setMatrices<2>(u, 1, matrix);
+}
+
+void GrMtlPipelineStateDataManager::setMatrix2fv(UniformHandle u,
+                                                 int arrayCount,
+                                                 const float m[]) const {
+    this->setMatrices<2>(u, arrayCount, m);
+}
+
+void GrMtlPipelineStateDataManager::setMatrix3f(UniformHandle u, const float matrix[]) const {
+    this->setMatrices<3>(u, 1, matrix);
+}
+
+void GrMtlPipelineStateDataManager::setMatrix3fv(UniformHandle u,
+                                                 int arrayCount,
+                                                 const float m[]) const {
+    this->setMatrices<3>(u, arrayCount, m);
+}
+
+void GrMtlPipelineStateDataManager::setMatrix4f(UniformHandle u, const float matrix[]) const {
+    this->setMatrices<4>(u, 1, matrix);
+}
+
+void GrMtlPipelineStateDataManager::setMatrix4fv(UniformHandle u,
+                                                 int arrayCount,
+                                                 const float m[]) const {
+    this->setMatrices<4>(u, arrayCount, m);
+}
+
+template<int N> struct set_uniform_matrix;
+
+template<int N> inline void GrMtlPipelineStateDataManager::setMatrices(
+        UniformHandle u,
+        int arrayCount,
+        const float matrices[]) const {
+    const Uniform& uni = fUniforms[u.toIndex()];
+    SkASSERT(uni.fType == kFloat2x2_GrSLType + (N - 2) ||
+             uni.fType == kHalf2x2_GrSLType + (N - 2));
+    SkASSERT(arrayCount > 0);
+    SkASSERT(arrayCount <= uni.fArrayCount ||
+             (1 == arrayCount && GrShaderVar::kNonArray == uni.fArrayCount));
+
+    void* buffer;
+    if (GrMtlUniformHandler::kGeometryBinding == uni.fBinding) {
+        buffer = fGeometryUniformData.get();
+        fGeometryUniformsDirty = true;
+    } else {
+        SkASSERT(GrMtlUniformHandler::kFragBinding == uni.fBinding);
+        buffer = fFragmentUniformData.get();
+        fFragmentUniformsDirty = true;
+    }
+
+    set_uniform_matrix<N>::set(buffer, uni.fOffset, arrayCount, matrices);
+}
+
+template<int N> struct set_uniform_matrix {
+    inline static void set(void* buffer, int uniformOffset, int count, const float matrices[]) {
+        GR_STATIC_ASSERT(sizeof(float) == 4);
+        buffer = static_cast<char*>(buffer) + uniformOffset;
+        for (int i = 0; i < count; ++i) {
+            const float* matrix = &matrices[N * N * i];
+            for (int j = 0; j < N; ++j) {
+                memcpy(buffer, &matrix[j * N], N * sizeof(float));
+                buffer = static_cast<char*>(buffer) + 4 * sizeof(float);
+            }
+        }
+    }
+};
+
+template<> struct set_uniform_matrix<4> {
+    inline static void set(void* buffer, int uniformOffset, int count, const float matrices[]) {
+        GR_STATIC_ASSERT(sizeof(float) == 4);
+        buffer = static_cast<char*>(buffer) + uniformOffset;
+        memcpy(buffer, matrices, count * 16 * sizeof(float));
+    }
+};
+
+void GrMtlPipelineStateDataManager::uploadUniformBuffers(GrMtlGpu* gpu,
+                                                         GrMtlBuffer* geometryBuffer,
+                                                         GrMtlBuffer* fragmentBuffer) const {
+    if (geometryBuffer && fGeometryUniformsDirty) {
+        SkAssertResult(geometryBuffer->updateData(fGeometryUniformData.get(),
+                                                  fGeometryUniformSize));
+        fGeometryUniformsDirty = false;
+    }
+    if (fragmentBuffer && fFragmentUniformsDirty) {
+        SkAssertResult(fragmentBuffer->updateData(fFragmentUniformData.get(),
+                                                  fFragmentUniformSize));
+        fFragmentUniformsDirty = false;
+    }
+}