{"id":18955,"date":"2024-03-16T10:28:27","date_gmt":"2024-03-16T01:28:27","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/android%e3%81%a73d%e5%ba%a7%e6%a8%99%e3%82%92%e6%8f%8f%e7%94%bb%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/"},"modified":"2025-08-06T18:57:39","modified_gmt":"2025-08-06T09:57:39","slug":"android%e3%81%a73d%e5%ba%a7%e6%a8%99%e3%82%92%e6%8f%8f%e7%94%bb%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/android%e3%81%a73d%e5%ba%a7%e6%a8%99%e3%82%92%e6%8f%8f%e7%94%bb%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/","title":{"rendered":"Android\u30673D\u5ea7\u6a19\u3092\u63cf\u753b\u3059\u308b\u65b9\u6cd5\u306f\uff1f"},"content":{"rendered":"<p>Android\u4e0a\u3067\u306f\u3001OpenGL ES\u3092\u4f7f\u7528\u3057\u30663D\u5ea7\u6a19\u3092\u63cf\u753b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u3001AndroidManifest.xml\u30d5\u30a1\u30a4\u30eb\u306b\u4ee5\u4e0b\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">uses-permission<\/span> <span class=\"hljs-attr\">android:name<\/span>=<span class=\"hljs-string\">\"android.permission.WAKE_LOCK\"<\/span> \/&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">uses-feature<\/span> <span class=\"hljs-attr\">android:glEsVersion<\/span>=<span class=\"hljs-string\">\"0x00020000\"<\/span> <span class=\"hljs-attr\">android:required<\/span>=<span class=\"hljs-string\">\"true\"<\/span> \/&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u305d\u306e\u5f8c\u3001Android\u306eActivity\u5185\u3067GLSurfaceView\u3092\u4f7f\u7528\u3057\u3066OpenGL\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> android.app.Activity;\r\n<span class=\"hljs-keyword\">import<\/span> android.content.Context;\r\n<span class=\"hljs-keyword\">import<\/span> android.opengl.GLES20;\r\n<span class=\"hljs-keyword\">import<\/span> android.opengl.GLSurfaceView;\r\n<span class=\"hljs-keyword\">import<\/span> android.opengl.Matrix;\r\n<span class=\"hljs-keyword\">import<\/span> android.os.Bundle;\r\n\r\n<span class=\"hljs-keyword\">import<\/span> javax.microedition.khronos.egl.EGLConfig;\r\n<span class=\"hljs-keyword\">import<\/span> javax.microedition.khronos.opengles.GL10;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MainActivity<\/span> <span class=\"hljs-keyword\">extends<\/span> <span class=\"hljs-title class_\">Activity<\/span> {\r\n\r\n    <span class=\"hljs-keyword\">private<\/span> GLSurfaceView mGLView;\r\n\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">protected<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onCreate<\/span><span class=\"hljs-params\">(Bundle savedInstanceState)<\/span> {\r\n        <span class=\"hljs-built_in\">super<\/span>.onCreate(savedInstanceState);\r\n\r\n        mGLView = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">MyGLSurfaceView<\/span>(<span class=\"hljs-built_in\">this<\/span>);\r\n        setContentView(mGLView);\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyGLSurfaceView<\/span> <span class=\"hljs-keyword\">extends<\/span> <span class=\"hljs-title class_\">GLSurfaceView<\/span> {\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> MyGLRenderer mRenderer;\r\n\r\n        <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-title function_\">MyGLSurfaceView<\/span><span class=\"hljs-params\">(Context context)<\/span> {\r\n            <span class=\"hljs-built_in\">super<\/span>(context);\r\n\r\n            setEGLContextClientVersion(<span class=\"hljs-number\">2<\/span>);\r\n\r\n            mRenderer = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">MyGLRenderer<\/span>();\r\n            setRenderer(mRenderer);\r\n        }\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyGLRenderer<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">GLSurfaceView<\/span>.Renderer {\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> Triangle mTriangle;\r\n\r\n        <span class=\"hljs-meta\">@Override<\/span>\r\n        <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onSurfaceCreated<\/span><span class=\"hljs-params\">(GL10 unused, EGLConfig config)<\/span> {\r\n            GLES20.glClearColor(<span class=\"hljs-number\">0.0f<\/span>, <span class=\"hljs-number\">0.0f<\/span>, <span class=\"hljs-number\">0.0f<\/span>, <span class=\"hljs-number\">1.0f<\/span>);\r\n            mTriangle = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Triangle<\/span>();\r\n        }\r\n\r\n        <span class=\"hljs-meta\">@Override<\/span>\r\n        <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onSurfaceChanged<\/span><span class=\"hljs-params\">(GL10 unused, <span class=\"hljs-type\">int<\/span> width, <span class=\"hljs-type\">int<\/span> height)<\/span> {\r\n            GLES20.glViewport(<span class=\"hljs-number\">0<\/span>, <span class=\"hljs-number\">0<\/span>, width, height);\r\n        }\r\n\r\n        <span class=\"hljs-meta\">@Override<\/span>\r\n        <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onDrawFrame<\/span><span class=\"hljs-params\">(GL10 unused)<\/span> {\r\n            GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);\r\n            mTriangle.draw();\r\n        }\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Triangle<\/span> {\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">vertexShaderCode<\/span> <span class=\"hljs-operator\">=<\/span>\r\n                <span class=\"hljs-string\">\"uniform mat4 uMVPMatrix;\"<\/span> +\r\n                        <span class=\"hljs-string\">\"attribute vec4 vPosition;\"<\/span> +\r\n                        <span class=\"hljs-string\">\"void main() {\"<\/span> +\r\n                        <span class=\"hljs-string\">\"  gl_Position = uMVPMatrix * vPosition;\"<\/span> +\r\n                        <span class=\"hljs-string\">\"}\"<\/span>;\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">fragmentShaderCode<\/span> <span class=\"hljs-operator\">=<\/span>\r\n                <span class=\"hljs-string\">\"precision mediump float;\"<\/span> +\r\n                        <span class=\"hljs-string\">\"uniform vec4 vColor;\"<\/span> +\r\n                        <span class=\"hljs-string\">\"void main() {\"<\/span> +\r\n                        <span class=\"hljs-string\">\"  gl_FragColor = vColor;\"<\/span> +\r\n                        <span class=\"hljs-string\">\"}\"<\/span>;\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">float<\/span>[] triangleCoords = {\r\n                <span class=\"hljs-comment\">\/\/ \u5750\u6807\u987a\u5e8f\uff1ax, y, z<\/span>\r\n                <span class=\"hljs-number\">0.0f<\/span>, <span class=\"hljs-number\">1.0f<\/span>, <span class=\"hljs-number\">0.0f<\/span>,\r\n                -<span class=\"hljs-number\">1.0f<\/span>, -<span class=\"hljs-number\">1.0f<\/span>, <span class=\"hljs-number\">0.0f<\/span>,\r\n                <span class=\"hljs-number\">1.0f<\/span>, -<span class=\"hljs-number\">1.0f<\/span>, <span class=\"hljs-number\">0.0f<\/span>\r\n        };\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">int<\/span> mProgram;\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> mPositionHandle;\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> mColorHandle;\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> mMVPMatrixHandle;\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">vertexCount<\/span> <span class=\"hljs-operator\">=<\/span> triangleCoords.length \/ COORDS_PER_VERTEX;\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">vertexStride<\/span> <span class=\"hljs-operator\">=<\/span> COORDS_PER_VERTEX * <span class=\"hljs-number\">4<\/span>;\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">COORDS_PER_VERTEX<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">3<\/span>;\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">COLOR_COMPONENTS_COUNT<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">4<\/span>;\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">float<\/span>[] color = {<span class=\"hljs-number\">0.63671875f<\/span>, <span class=\"hljs-number\">0.76953125f<\/span>, <span class=\"hljs-number\">0.22265625f<\/span>, <span class=\"hljs-number\">1.0f<\/span>};\r\n\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">float<\/span>[] mMVPMatrix = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">float<\/span>[<span class=\"hljs-number\">16<\/span>];\r\n\r\n        <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-title function_\">Triangle<\/span><span class=\"hljs-params\">()<\/span> {\r\n            <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">vertexShader<\/span> <span class=\"hljs-operator\">=<\/span> loadShader(GLES20.GL_VERTEX_SHADER, vertexShaderCode);\r\n            <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">fragmentShader<\/span> <span class=\"hljs-operator\">=<\/span> loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentShaderCode);\r\n\r\n            mProgram = GLES20.glCreateProgram();\r\n            GLES20.glAttachShader(mProgram, vertexShader);\r\n            GLES20.glAttachShader(mProgram, fragmentShader);\r\n            GLES20.glLinkProgram(mProgram);\r\n\r\n            Matrix.setIdentityM(mMVPMatrix, <span class=\"hljs-number\">0<\/span>);\r\n            Matrix.translateM(mMVPMatrix, <span class=\"hljs-number\">0<\/span>, <span class=\"hljs-number\">0<\/span>, <span class=\"hljs-number\">0<\/span>, -<span class=\"hljs-number\">3f<\/span>);\r\n        }\r\n\r\n        <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">draw<\/span><span class=\"hljs-params\">()<\/span> {\r\n            GLES20.glUseProgram(mProgram);\r\n\r\n            mPositionHandle = GLES20.glGetAttribLocation(mProgram, <span class=\"hljs-string\">\"vPosition\"<\/span>);\r\n            GLES20.glEnableVertexAttribArray(mPositionHandle);\r\n            GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, <span class=\"hljs-literal\">false<\/span>, vertexStride, vertexBuffer);\r\n\r\n            mColorHandle = GLES20.glGetUniformLocation(mProgram, <span class=\"hljs-string\">\"vColor\"<\/span>);\r\n            GLES20.glUniform4fv(mColorHandle, <span class=\"hljs-number\">1<\/span>, color, <span class=\"hljs-number\">0<\/span>);\r\n\r\n            mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, <span class=\"hljs-string\">\"uMVPMatrix\"<\/span>);\r\n            GLES20.glUniformMatrix4fv(mMVPMatrixHandle, <span class=\"hljs-number\">1<\/span>, <span class=\"hljs-literal\">false<\/span>,<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Android\u4e0a\u3067\u306f\u3001OpenGL ES\u3092\u4f7f\u7528\u3057\u30663D\u5ea7\u6a19\u3092\u63cf\u753b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002 \u307e\u305a\u3001AndroidManifest.xml\u30d5\u30a1\u30a4\u30eb\u306b\u4ee5\u4e0b\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002  [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-18955","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Android\u30673D\u5ea7\u6a19\u3092\u63cf\u753b\u3059\u308b\u65b9\u6cd5\u306f\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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