private int setupRenderTextureAndRenderbuffer(int width, int height)
{
if (mTextureId != -1)
{
GLES20.GlDeleteTextures(1, new int[] { mTextureId }, 0);
}
if (mRenderbufferId != -1)
{
GLES20.GlDeleteRenderbuffers(1, new int[] { mRenderbufferId }, 0);
}
if (mFramebufferId != -1)
{
GLES20.GlDeleteFramebuffers(1, new int[] { mFramebufferId }, 0);
}
mTextureId = createTexture(width, height);
checkGlError("setupRenderTextureAndRenderbuffer: create texture");
int[] renderbufferIds = new int[1];
GLES20.GlGenRenderbuffers(1, renderbufferIds, 0);
GLES20.GlBindRenderbuffer(36161, renderbufferIds[0]);
GLES20.GlRenderbufferStorage(36161, 33189, width, height);
mRenderbufferId = renderbufferIds[0];
checkGlError("setupRenderTextureAndRenderbuffer: create renderbuffer");
int[] framebufferIds = new int[1];
GLES20.GlGenFramebuffers(1, framebufferIds, 0);
GLES20.GlBindFramebuffer(36160, framebufferIds[0]);
mFramebufferId = framebufferIds[0];
GLES20.GlFramebufferTexture2D(36160, 36064, 3553, mTextureId, 0);
GLES20.GlFramebufferRenderbuffer(36160, 36096, 36161, renderbufferIds[0]);
int status = GLES20.GlCheckFramebufferStatus(36160);
if (status != 36053)
{
throw new Java.Lang.RuntimeException("Framebuffer is not complete: " + Java.Lang.Integer.ToHexString(status));
}
GLES20.GlBindFramebuffer(36160, 0);
return(framebufferIds[0]);
}
private void create(int width, int height)
{
// FBO
int[] ret = new int[1];
// frame buffer
GLES20.GlGenFramebuffers(1, ret, 0);
FBO = ret[0];
GLES20.GlBindFramebuffer(GLES20.GlFramebuffer, FBO);
// depth buffer
GLES20.GlGenRenderbuffers(1, ret, 0);
RBOD = ret[0];
GLES20.GlBindRenderbuffer(GLES20.GlFramebuffer, RBOD);
GLES20.GlRenderbufferStorage(GLES20.GlRenderbuffer, GLES20.GlDepthComponent16, width, height);
GLES20.GlFramebufferRenderbuffer(GLES20.GlFramebuffer, GLES20.GlDepthAttachment, GLES20.GlRenderbuffer, RBOD);
// color buffer (is texture)
GLES20.GlPixelStorei(GLES20.GlUnpackAlignment, 1);
GLES20.GlGenTextures(1, ret, 0);
RBOC = ret[0];
GLES20.GlBindTexture(GLES20.GlTexture2d, RBOC);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlLinear);
GLES20.GlTexImage2D(GLES20.GlTexture2d, 0, GLES20.GlRgba, width, height, 0, GLES20.GlRgba, GLES20.GlUnsignedByte, null);
GLES20.GlFramebufferTexture2D(GLES20.GlFramebuffer, GLES20.GlColorAttachment0, GLES20.GlTexture2d, RBOC, 0);
if (GLES20.GlCheckFramebufferStatus(GLES20.GlFramebuffer) != GLES20.GlFramebufferComplete)
{
Log.Debug(TAG, "Fail to create FBO.");
FBO = 0;
RBOD = 0;
RBOC = 0;
}
}
public virtual void attach(int point, Renderbuffer buffer)
{
bind();
GLES20.GlFramebufferRenderbuffer(GLES20.GlRenderbuffer, point, GLES20.GlTexture2d, buffer.Id());
}