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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <SkMesh.h>
#include "GraphicsJNI.h"
#include "graphics_jni_helpers.h"
namespace android {
using Attribute = SkMeshSpecification::Attribute;
using Varying = SkMeshSpecification::Varying;
static struct {
jclass clazz{};
jfieldID type{};
jfieldID offset{};
jfieldID name{};
} gAttributeInfo;
static struct {
jclass clazz{};
jfieldID type{};
jfieldID name{};
} gVaryingInfo;
std::vector<Attribute> extractAttributes(JNIEnv* env, jobjectArray attributes) {
int size = env->GetArrayLength(attributes);
std::vector<Attribute> attVector;
attVector.reserve(size);
for (int i = 0; i < size; i++) {
jobject attribute = env->GetObjectArrayElement(attributes, i);
auto name = (jstring)env->GetObjectField(attribute, gAttributeInfo.name);
auto attName = ScopedUtfChars(env, name);
Attribute temp{Attribute::Type(env->GetIntField(attribute, gAttributeInfo.type)),
static_cast<size_t>(env->GetIntField(attribute, gAttributeInfo.offset)),
SkString(attName.c_str())};
attVector.push_back(std::move(temp));
}
return attVector;
}
std::vector<Varying> extractVaryings(JNIEnv* env, jobjectArray varyings) {
int size = env->GetArrayLength(varyings);
std::vector<Varying> varyVector;
varyVector.reserve(size);
for (int i = 0; i < size; i++) {
jobject varying = env->GetObjectArrayElement(varyings, i);
auto name = (jstring)env->GetObjectField(varying, gVaryingInfo.name);
auto varyName = ScopedUtfChars(env, name);
Varying temp{Varying::Type(env->GetIntField(varying, gVaryingInfo.type)),
SkString(varyName.c_str())};
varyVector.push_back(std::move(temp));
}
return varyVector;
}
static jlong Make(JNIEnv* env, jobject thiz, jobjectArray attributeArray, jint vertexStride,
jobjectArray varyingArray, jstring vertexShader, jstring fragmentShader) {
auto attributes = extractAttributes(env, attributeArray);
auto varyings = extractVaryings(env, varyingArray);
auto skVertexShader = ScopedUtfChars(env, vertexShader);
auto skFragmentShader = ScopedUtfChars(env, fragmentShader);
auto meshSpecResult = SkMeshSpecification::Make(attributes, vertexStride, varyings,
SkString(skVertexShader.c_str()),
SkString(skFragmentShader.c_str()));
if (meshSpecResult.specification.get() == nullptr) {
jniThrowException(env, "java/lang/IllegalArgumentException", meshSpecResult.error.c_str());
}
return reinterpret_cast<jlong>(meshSpecResult.specification.release());
}
static jlong MakeWithCS(JNIEnv* env, jobject thiz, jobjectArray attributeArray, jint vertexStride,
jobjectArray varyingArray, jstring vertexShader, jstring fragmentShader,
jlong colorSpace) {
auto attributes = extractAttributes(env, attributeArray);
auto varyings = extractVaryings(env, varyingArray);
auto skVertexShader = ScopedUtfChars(env, vertexShader);
auto skFragmentShader = ScopedUtfChars(env, fragmentShader);
auto meshSpecResult = SkMeshSpecification::Make(
attributes, vertexStride, varyings, SkString(skVertexShader.c_str()),
SkString(skFragmentShader.c_str()), GraphicsJNI::getNativeColorSpace(colorSpace));
if (meshSpecResult.specification.get() == nullptr) {
jniThrowException(env, "java/lang/IllegalArgumentException", meshSpecResult.error.c_str());
}
return reinterpret_cast<jlong>(meshSpecResult.specification.release());
}
static jlong MakeWithAlpha(JNIEnv* env, jobject thiz, jobjectArray attributeArray,
jint vertexStride, jobjectArray varyingArray, jstring vertexShader,
jstring fragmentShader, jlong colorSpace, jint alphaType) {
auto attributes = extractAttributes(env, attributeArray);
auto varyings = extractVaryings(env, varyingArray);
auto skVertexShader = ScopedUtfChars(env, vertexShader);
auto skFragmentShader = ScopedUtfChars(env, fragmentShader);
auto meshSpecResult = SkMeshSpecification::Make(
attributes, vertexStride, varyings, SkString(skVertexShader.c_str()),
SkString(skFragmentShader.c_str()), GraphicsJNI::getNativeColorSpace(colorSpace),
SkAlphaType(alphaType));
if (meshSpecResult.specification.get() == nullptr) {
jniThrowException(env, "java/lang/IllegalArgumentException", meshSpecResult.error.c_str());
}
return reinterpret_cast<jlong>(meshSpecResult.specification.release());
}
static void MeshSpecification_safeUnref(SkMeshSpecification* meshSpec) {
SkSafeUnref(meshSpec);
}
static jlong getMeshSpecificationFinalizer(CRITICAL_JNI_PARAMS) {
return static_cast<jlong>(reinterpret_cast<uintptr_t>(&MeshSpecification_safeUnref));
}
static const JNINativeMethod gMeshSpecificationMethods[] = {
{"nativeGetFinalizer", "()J", (void*)getMeshSpecificationFinalizer},
{"nativeMake",
"([Landroid/graphics/MeshSpecification$Attribute;I[Landroid/graphics/"
"MeshSpecification$Varying;"
"Ljava/lang/String;Ljava/lang/String;)J",
(void*)Make},
{"nativeMakeWithCS",
"([Landroid/graphics/MeshSpecification$Attribute;I"
"[Landroid/graphics/MeshSpecification$Varying;Ljava/lang/String;Ljava/lang/String;J)J",
(void*)MakeWithCS},
{"nativeMakeWithAlpha",
"([Landroid/graphics/MeshSpecification$Attribute;I"
"[Landroid/graphics/MeshSpecification$Varying;Ljava/lang/String;Ljava/lang/String;JI)J",
(void*)MakeWithAlpha}};
int register_android_graphics_MeshSpecification(JNIEnv* env) {
android::RegisterMethodsOrDie(env, "android/graphics/MeshSpecification",
gMeshSpecificationMethods, NELEM(gMeshSpecificationMethods));
gAttributeInfo.clazz = env->FindClass("android/graphics/MeshSpecification$Attribute");
gAttributeInfo.type = env->GetFieldID(gAttributeInfo.clazz, "mType", "I");
gAttributeInfo.offset = env->GetFieldID(gAttributeInfo.clazz, "mOffset", "I");
gAttributeInfo.name = env->GetFieldID(gAttributeInfo.clazz, "mName", "Ljava/lang/String;");
gVaryingInfo.clazz = env->FindClass("android/graphics/MeshSpecification$Varying");
gVaryingInfo.type = env->GetFieldID(gVaryingInfo.clazz, "mType", "I");
gVaryingInfo.name = env->GetFieldID(gVaryingInfo.clazz, "mName", "Ljava/lang/String;");
return 0;
}
} // namespace android
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