完成在Android上渲染三角形

app/src/main/assets/shaders/simple_shader.frag

@@ -0,0 +1,7 @@
+#version 450
+layout(location = 0) in vec3 fragColor;
+layout(location = 0) out vec4 outColor;
+
+void main() {
+    outColor = vec4(fragColor, 1.0);
+}

app/src/main/assets/shaders/simple_shader.vert

@@ -0,0 +1,19 @@
+#version 450
+layout(location = 0) out vec3 fragColor;
+
+vec2 positions[3] = vec2[](
+    vec2(0.0, -0.5),
+    vec2(0.5, 0.5),
+    vec2(-0.5, 0.5)
+);
+
+vec3 colors[3] = vec3[](
+    vec3(1.0, 0.0, 0.0),
+    vec3(0.0, 1.0, 0.0),
+    vec3(0.0, 0.0, 1.0)
+);
+
+void main() {
+    gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+    fragColor = colors[gl_VertexIndex];
+}

app/src/main/cpp/main.cpp

@@ -4,6 +4,7 @@
 #include <game-activity/GameActivity.h>
 #include "AndroidOut.h"
 #include "Application.h"
+#include <android/asset_manager.h>
 #include <chrono>
 #include <thread>
 
@@ -12,6 +13,7 @@ extern "C" {
 
 android_app* g_android_app = nullptr;
 Application* g_Application = nullptr;
+AAssetManager* g_assetManager = nullptr;
 
 void handle_cmd(android_app *pApp, int32_t cmd) {
     switch (cmd) {
@@ -30,6 +32,7 @@ void handle_cmd(android_app *pApp, int32_t cmd) {
 void android_main(struct android_app *pApp) {
     aout << "Welcome to android_main" << std::endl;
     g_android_app = pApp;
+    g_assetManager = pApp->activity->assetManager;
     Application application;
     g_Application = &application;
     pApp->onAppCmd = handle_cmd;