Method Init

Revive/TextureGL.cpp:87–135

}

bool TextureGL::Init(ovrTextureType Type, int Width, int Height, int MipLevels, int SampleCount,
	int ArraySize, ovrTextureFormat Format, unsigned int MiscFlags, unsigned int BindFlags)
{
	GLenum internalFormat = TextureFormatToInternalFormat(Format);
	GLenum format = TextureFormatToGLFormat(Format);

	glCreateTextures(SampleCount > 1 ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D, 1, &Texture);
	glTextureParameteri(Texture, GL_TEXTURE_BASE_LEVEL, 0);
	glTextureParameteri(Texture, GL_TEXTURE_MAX_LEVEL, 0);
	if (SampleCount > 1)
		glTextureStorage2DMultisample(Texture, SampleCount, internalFormat, Width, Height, GL_FALSE);
	else
		glTextureStorage2D(Texture, 1, internalFormat, Width, Height);

	m_Width = Width;
	m_Height = Height;

	if (SampleCount > 1 || Type == ovrTexture_2D_External)
	{
		GLenum attachment = format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL ?
			GL_DEPTH_ATTACHMENT : GL_COLOR_ATTACHMENT0;

		glCreateFramebuffers(1, &Framebuffer);
		glNamedFramebufferTexture(Framebuffer, attachment, Texture, 0);
		glNamedFramebufferReadBuffer(Framebuffer, attachment);
		glNamedFramebufferDrawBuffer(Framebuffer, attachment);
		GLenum completeness = glCheckNamedFramebufferStatus(Framebuffer, GL_FRAMEBUFFER);
		if (completeness != GL_FRAMEBUFFER_COMPLETE)
			return false;

		if (SampleCount > 1)
		{
			// SteamVR doesn't support OpenGL MSAA textures, so we have to resolve it before returning a VR texture
			glCreateTextures(GL_TEXTURE_2D, 1, &ResolveTexture);
			glTextureParameteri(ResolveTexture, GL_TEXTURE_BASE_LEVEL, 0);
			glTextureParameteri(ResolveTexture, GL_TEXTURE_MAX_LEVEL, 0);
			glTextureStorage2D(ResolveTexture, 1, internalFormat, Width, Height);

			glCreateFramebuffers(1, &ResolveFramebuffer);
			glNamedFramebufferTexture(ResolveFramebuffer, attachment, ResolveTexture, 0);
			glNamedFramebufferReadBuffer(ResolveFramebuffer, attachment);
			glNamedFramebufferDrawBuffer(ResolveFramebuffer, attachment);
			if (glCheckNamedFramebufferStatus(ResolveFramebuffer, GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
				return false;
		}
	}

	return true;
}

bool TextureGL::CreateSharedTextureGL(unsigned int* outName)
{