1 /* 2 * Copyright 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef GLES3JNI_H 18 #define GLES3JNI_H 1 19 20 #include <android/log.h> 21 #include <math.h> 22 23 #if DYNAMIC_ES3 24 #include "gl3stub.h" 25 #else 26 #include <GLES3/gl3.h> 27 #endif 28 29 #define DEBUG 1 30 31 #define LOG_TAG "GLES3JNI" 32 #define ALOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__) 33 #if DEBUG 34 #define ALOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, LOG_TAG, __VA_ARGS__) 35 #else 36 #define ALOGV(...) 37 #endif 38 39 // ---------------------------------------------------------------------------- 40 // Types, functions, and data used by both ES2 and ES3 renderers. 41 // Defined in gles3jni.cpp. 42 43 #define MAX_INSTANCES_PER_SIDE 16 44 #define MAX_INSTANCES (MAX_INSTANCES_PER_SIDE * MAX_INSTANCES_PER_SIDE) 45 #define TWO_PI (2.0 * M_PI) 46 #define MAX_ROT_SPEED (0.3 * TWO_PI) 47 48 // This demo uses three coordinate spaces: 49 // - The model (a quad) is in a [-1 .. 1]^2 space 50 // - Scene space is either 51 // landscape: [-1 .. 1] x [-1/(2*w/h) .. 1/(2*w/h)] 52 // portrait: [-1/(2*h/w) .. 1/(2*h/w)] x [-1 .. 1] 53 // - Clip space in OpenGL is [-1 .. 1]^2 54 // 55 // Conceptually, the quads are rotated in model space, then scaled (uniformly) 56 // and translated to place them in scene space. Scene space is then 57 // non-uniformly scaled to clip space. In practice the transforms are combined 58 // so vertices go directly from model to clip space. 59 60 struct Vertex { 61 GLfloat pos[2]; 62 GLubyte rgba[4]; 63 }; 64 extern const Vertex QUAD[4]; 65 66 // returns true if a GL error occurred 67 extern bool checkGlError(const char* funcName); 68 extern GLuint createShader(GLenum shaderType, const char* src); 69 extern GLuint createProgram(const char* vtxSrc, const char* fragSrc); 70 71 // ---------------------------------------------------------------------------- 72 // Interface to the ES2 and ES3 renderers, used by JNI code. 73 74 class Renderer { 75 public: 76 virtual ~Renderer(); 77 void resize(int w, int h); 78 void render(); 79 80 protected: 81 Renderer(); 82 83 // return a pointer to a buffer of MAX_INSTANCES * sizeof(vec2). 84 // the buffer is filled with per-instance offsets, then unmapped. 85 virtual float* mapOffsetBuf() = 0; 86 virtual void unmapOffsetBuf() = 0; 87 // return a pointer to a buffer of MAX_INSTANCES * sizeof(vec4). 88 // the buffer is filled with per-instance scale and rotation transforms. 89 virtual float* mapTransformBuf() = 0; 90 virtual void unmapTransformBuf() = 0; 91 92 virtual void draw(unsigned int numInstances) = 0; 93 94 private: 95 void calcSceneParams(unsigned int w, unsigned int h, float* offsets); 96 void step(); 97 98 unsigned int mNumInstances; 99 float mScale[2]; 100 float mAngularVelocity[MAX_INSTANCES]; 101 uint64_t mLastFrameNs; 102 float mAngles[MAX_INSTANCES]; 103 }; 104 105 extern Renderer* createES2Renderer(); 106 extern Renderer* createES3Renderer(); 107 108 #endif // GLES3JNI_H 109
