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#include "OculusSwapChain.h"
#include "vrb/FBO.h"
#include "vrb/GLError.h"
#include "vrb/Logger.h"
namespace crow {
OculusSwapChainPtr
OculusSwapChain::CreateFBO(vrb::RenderContextPtr& aContext, const vrb::FBO::Attributes& attributes,
uint32_t aWidth, uint32_t aHeight, bool buffered, const vrb::Color& aClearColor ) {
auto result = std::make_shared<OculusSwapChain>();
result->mSwapChain = vrapi_CreateTextureSwapChain(VRAPI_TEXTURE_TYPE_2D,
VRAPI_TEXTURE_FORMAT_8888,
aWidth, aHeight, 1, buffered);
result->mSwapChainLength = vrapi_GetTextureSwapChainLength(result->mSwapChain);
result->mWidth = aWidth;
result->mHeight = aHeight;
for (int i = 0; i < result->mSwapChainLength ; ++i) {
vrb::FBOPtr fbo = vrb::FBO::Create(aContext);
auto texture = vrapi_GetTextureSwapChainHandle(result->mSwapChain, i);
VRB_GL_CHECK(glBindTexture(GL_TEXTURE_2D, texture));
VRB_GL_CHECK(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
VRB_GL_CHECK(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
VRB_GL_CHECK(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
VRB_GL_CHECK(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
VRB_GL_CHECK(fbo->SetTextureHandle(texture, aWidth, aHeight, attributes));
if (fbo->IsValid()) {
result->mFBOs.push_back(fbo);
fbo->Bind();
VRB_GL_CHECK(glClearColor(aClearColor.Red(), aClearColor.Green(), aClearColor.Blue(), aClearColor.Alpha()));
VRB_GL_CHECK(glClear(GL_COLOR_BUFFER_BIT));
fbo->Unbind();
} else {
VRB_LOG("FAILED to make valid FBO");
}
}
return result;
}
OculusSwapChainPtr OculusSwapChain::CreateAndroidSurface(JNIEnv* aEnv, uint32_t aWidth, uint32_t aHeight) {
auto result = std::make_shared<OculusSwapChain>();
result->mSwapChain = vrapi_CreateAndroidSurfaceSwapChain(aWidth, aHeight);
result->mWidth = aWidth;
result->mHeight = aHeight;
jobject surface = vrapi_GetTextureSwapChainAndroidSurface(result->mSwapChain);
result->mEnv = aEnv;
result->mSurface = aEnv->NewGlobalRef(surface);
return result;
}
OculusSwapChainPtr OculusSwapChain::CreateCubemap(GLint aFormat, uint32_t aWidth, uint32_t aHeight) {
auto result = std::make_shared<OculusSwapChain>();
result->mSwapChain = vrapi_CreateTextureSwapChain3(VRAPI_TEXTURE_TYPE_CUBE, aFormat, aWidth, aWidth, 1, 1);
result->mWidth = aWidth;
result->mHeight = aHeight;
return result;
}
OculusSwapChain::~OculusSwapChain() {
Destroy();
}
void
OculusSwapChain::Destroy() {
mFBOs.clear();
if (mSurface && mEnv) {
mEnv->DeleteGlobalRef(mSurface);
mSurface = nullptr;
mEnv = nullptr;
}
if (mSwapChain) {
vrapi_DestroyTextureSwapChain(mSwapChain);
mSwapChain = nullptr;
}
}
vrb::FBOPtr
OculusSwapChain::FBO(const int32_t aIndex) const {
if (aIndex >= 0 && aIndex < mFBOs.size()) {
return mFBOs[aIndex];
}
return nullptr;
}
GLuint
OculusSwapChain::TextureHandle(const int32_t aIndex) const {
if (mSwapChain) {
return vrapi_GetTextureSwapChainHandle(mSwapChain, aIndex);
}
return 0;
}
}