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/*
* Copyright 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include "GLFramebuffer.h"
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <GLES2/gl2ext.h>
#include <GLES3/gl3.h>
#include <gui/DebugEGLImageTracker.h>
#include <nativebase/nativebase.h>
#include <utils/Trace.h>
#include "GLESRenderEngine.h"
namespace android {
namespace renderengine {
namespace gl {
GLFramebuffer::GLFramebuffer(GLESRenderEngine& engine)
: mEngine(engine), mEGLDisplay(engine.getEGLDisplay()), mEGLImage(EGL_NO_IMAGE_KHR) {
glGenTextures(1, &mTextureName);
glGenFramebuffers(1, &mFramebufferName);
}
GLFramebuffer::~GLFramebuffer() {
glDeleteFramebuffers(1, &mFramebufferName);
glDeleteTextures(1, &mTextureName);
}
bool GLFramebuffer::setNativeWindowBuffer(ANativeWindowBuffer* nativeBuffer, bool isProtected,
const bool useFramebufferCache) {
ATRACE_CALL();
if (mEGLImage != EGL_NO_IMAGE_KHR) {
if (!usingFramebufferCache) {
eglDestroyImageKHR(mEGLDisplay, mEGLImage);
DEBUG_EGL_IMAGE_TRACKER_DESTROY();
}
mEGLImage = EGL_NO_IMAGE_KHR;
mBufferWidth = 0;
mBufferHeight = 0;
}
if (nativeBuffer) {
mEGLImage = mEngine.createFramebufferImageIfNeeded(nativeBuffer, isProtected,
useFramebufferCache);
if (mEGLImage == EGL_NO_IMAGE_KHR) {
return false;
}
usingFramebufferCache = useFramebufferCache;
mBufferWidth = nativeBuffer->width;
mBufferHeight = nativeBuffer->height;
}
return true;
}
void GLFramebuffer::allocateBuffers(uint32_t width, uint32_t height, void* data) {
ATRACE_CALL();
glBindTexture(GL_TEXTURE_2D, mTextureName);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
mBufferHeight = height;
mBufferWidth = width;
mEngine.checkErrors("Allocating Fbo texture");
bind();
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mTextureName, 0);
mStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
unbind();
glBindTexture(GL_TEXTURE_2D, 0);
if (mStatus != GL_FRAMEBUFFER_COMPLETE) {
ALOGE("Frame buffer is not complete. Error %d", mStatus);
}
}
void GLFramebuffer::bind() const {
glBindFramebuffer(GL_FRAMEBUFFER, mFramebufferName);
}
void GLFramebuffer::bindAsReadBuffer() const {
glBindFramebuffer(GL_READ_FRAMEBUFFER, mFramebufferName);
}
void GLFramebuffer::bindAsDrawBuffer() const {
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mFramebufferName);
}
void GLFramebuffer::unbind() const {
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
} // namespace gl
} // namespace renderengine
} // namespace android
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