#include "precompiled.h"

#include "ogl.h"
#include "lib/res/graphics/ogl_shader.h"
#include "ps/CLogger.h"
#include "renderer/Renderer.h"
#include "renderer/RenderPathVertexShader.h"

#define LOG_CATEGORY "graphics"


RenderPathVertexShader::RenderPathVertexShader()
{
	m_ModelLight = 0;
	m_ModelLight_SHCoefficients = -1;
}

RenderPathVertexShader::~RenderPathVertexShader()
{
	if (m_ModelLight)
		ogl_program_free(m_ModelLight);
}

// Initialize this render path.
// Use delayed initialization so that we can fallback to a different render path
// if anything went wrong and use the destructor to clean things up.
bool RenderPathVertexShader::Init()
{
	if (!g_Renderer.m_Caps.m_VertexShader)
		return false;

	m_ModelLight = ogl_program_load("shaders/model_light.xml");
	if (m_ModelLight < 0)
	{
		LOG(WARNING, LOG_CATEGORY, "Failed to load shaders/model_light.xml: %i\n", (int)m_ModelLight);
		return false;
	}
	
	return true;
}


// This is quite the hack, but due to shader reloads,
// the uniform locations might have changed under us.
void RenderPathVertexShader::BeginFrame()
{
	m_ModelLight_SHCoefficients = ogl_program_get_uniform_location(m_ModelLight, "SHCoefficients");
}