public void beforeDrawFrame() { this.mDrawingFrame = true; if (this.mFovsChanged || this.mTextureFormatChanged) { this.updateTextureAndDistortionMesh(); } GLES20.glGetIntegerv(GLES20.GL_FRAMEBUFFER_BINDING, this.mOriginalFramebufferId); GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, this.mFramebufferId); }
private int setupRenderTextureAndRenderbuffer(final int width, final int height) { if (this.mTextureId != -1) { GLES20.glDeleteTextures(1, new int[] {this.mTextureId}, 0); } if (this.mRenderbufferId != -1) { GLES20.glDeleteRenderbuffers(1, new int[] {this.mRenderbufferId}, 0); } if (this.mFramebufferId != -1) { GLES20.glDeleteFramebuffers(1, new int[] {this.mFramebufferId}, 0); } this.mTextureId = this.createTexture(width, height, this.mTextureFormat, this.mTextureType); this.mTextureFormatChanged = false; this.checkGlError("setupRenderTextureAndRenderbuffer: create texture"); final int[] renderbufferIds = {0}; GLES20.glGenRenderbuffers(1, renderbufferIds, 0); GLES20.glBindRenderbuffer(GLES20.GL_RENDERBUFFER, renderbufferIds[0]); GLES20.glRenderbufferStorage( GLES20.GL_RENDERBUFFER, GLES20.GL_DEPTH_COMPONENT16, width, height); this.mRenderbufferId = renderbufferIds[0]; this.checkGlError("setupRenderTextureAndRenderbuffer: create renderbuffer"); final int[] framebufferIds = {0}; GLES20.glGenFramebuffers(1, framebufferIds, 0); GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, framebufferIds[0]); this.mFramebufferId = framebufferIds[0]; GLES20.glFramebufferTexture2D( GLES20.GL_FRAMEBUFFER, GLES20.GL_COLOR_ATTACHMENT0, GLES20.GL_TEXTURE_2D, this.mTextureId, 0); GLES20.glFramebufferRenderbuffer( GLES20.GL_FRAMEBUFFER, GLES20.GL_DEPTH_ATTACHMENT, GLES20.GL_RENDERBUFFER, renderbufferIds[0]); final int status = GLES20.glCheckFramebufferStatus(GLES20.GL_FRAMEBUFFER); if (status != GLES20.GL_FRAMEBUFFER_COMPLETE) { final String s = "Framebuffer is not complete: "; final String value = String.valueOf(Integer.toHexString(status)); throw new RuntimeException((value.length() != 0) ? s.concat(value) : new String(s)); } GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0); return framebufferIds[0]; }
public void afterDrawFrame() { GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, this.mOriginalFramebufferId.array()[0]); this.undistortTexture(this.mTextureId); this.mDrawingFrame = false; }