feat: add overlay texture

xufuji456 · xufuji456 · commit eb8f99b9e652 · 2023-06-30T18:20:04.000+08:00
diff --git a/CameraFilter/src/main/java/com/frank/camerafilter/filter/BaseFilter.java b/CameraFilter/src/main/java/com/frank/camerafilter/filter/BaseFilter.java
@@ -38,6 +38,9 @@ public class BaseFilter {
     protected FloatBuffer mVertexBuffer;
     protected FloatBuffer mTextureBuffer;
 
+    private int mOverlayTexture;
+    private int[] mOverlayTextureId;
+
     public BaseFilter(String vertexShader, String fragmentShader) {
         mRunnableDraw = new LinkedList<>();
         mVertexShader = vertexShader;
@@ -72,6 +75,12 @@ public void init() {
         onInitialized();
     }
 
+    protected void initOverlayTexture() {
+        mOverlayTexture = GLES30.glGetUniformLocation(mProgramId, "inputImageTexture2");
+        mOverlayTextureId = new int[1];
+        GLES30.glGenTextures(1, mOverlayTextureId, 0);
+    }
+
     protected void onDestroy() {
 
     }
@@ -124,6 +133,12 @@ public int onDrawFrame(final int textureId, FloatBuffer vertexBuffer, FloatBuffe
             GLES30.glUniform1i(mUniformTexture, 0);
         }
 
+        if (mOverlayTextureId != null && mOverlayTextureId[0] != OpenGLUtil.NO_TEXTURE) {
+            GLES30.glActiveTexture(GLES30.GL_TEXTURE1);
+            GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mOverlayTextureId[0]);
+            GLES30.glUniform1i(mOverlayTexture, 0);
+        }
+
         onDrawArrayBefore();
         GLES30.glDrawArrays(GLES30.GL_TRIANGLE_STRIP, 0, 4);
         GLES30.glDisableVertexAttribArray(mAttributePosition);
@@ -147,6 +162,15 @@ protected void runOnDraw(final Runnable runnable) {
         }
     }
 
+    public void setInteger(final int location, final int intVal) {
+        runOnDraw(new Runnable() {
+            @Override
+            public void run() {
+                GLES30.glUniform1i(location, intVal);
+            }
+        });
+    }
+
     public void setFloat(final int location, final float floatVal) {
         runOnDraw(new Runnable() {
             @Override
