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path: root/src/osd/modules/render/bgfx/chain.cpp
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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
//============================================================
//
//  chain.cpp - BGFX screen-space post-effect chain
//
//============================================================

#include "emu.h"

#include <bx/timer.h>

#include "slider.h"
#include "parameter.h"
#include "entryuniform.h"
#include "texturemanager.h"
#include "vertex.h"
#include "window.h"

#include "chain.h"

bgfx_chain::bgfx_chain(std::string name, std::string author, std::vector<bgfx_slider*> sliders, std::vector<bgfx_parameter*> params, std::vector<bgfx_chain_entry*> entries, std::string output)
	: m_name(name)
	, m_author(author)
	, m_sliders(sliders)
	, m_params(params)
	, m_entries(entries)
    , m_output(output)
    , m_current_time(0)
{
    for (bgfx_slider* slider : m_sliders)
    {
        m_slider_map[slider->name()] = slider;
    }
}

bgfx_chain::~bgfx_chain()
{
	for (bgfx_slider* slider : m_sliders)
	{
		delete slider;
	}
	for (bgfx_parameter* param : m_params)
	{
		delete param;
	}
	for (bgfx_chain_entry* entry : m_entries)
	{
		delete entry;
	}
}

void bgfx_chain::process(render_primitive* prim, int view, texture_manager& textures, osd_window& window, uint64_t blend)
{
    int current_view = view;
    uint16_t screen_width = window.get_size().width();
    uint16_t screen_height = window.get_size().height();
    uint32_t rotation_type = (window.target()->orientation() & ROT90) == ROT90 ?
    					1 : (window.target()->orientation() & ROT180) == ROT180 ?
						2 : (window.target()->orientation() & ROT270) == ROT270 ?
						3 : 0;
	bool orientation_swap_xy = (window.machine().system().flags & ORIENTATION_SWAP_XY) == ORIENTATION_SWAP_XY;
	bool rotation_swap_xy = (window.target()->orientation() & ROT90) == ROT90 || (window.target()->orientation() & ROT270) == ROT270;
	bool swap_xy = orientation_swap_xy ^ rotation_swap_xy;

    for (bgfx_chain_entry* entry : m_entries)
	{
        if (!entry->skip())
        {
            entry->submit(current_view, prim, textures, screen_width, screen_height, rotation_type, swap_xy, blend);
            current_view++;
        }
	}

    m_current_time = bx::getHPCounter();
    static int64_t last = m_current_time;
    const int64_t frameTime = m_current_time - last;
    last = m_current_time;
    const double freq = double(bx::getHPFrequency());
    const double toMs = 1000.0 / freq;
    const double frameTimeInSeconds = (double)frameTime / 1000000.0;

    for (bgfx_parameter* param : m_params)
    {
        param->tick(frameTimeInSeconds* toMs);
    }
}

uint32_t bgfx_chain::applicable_passes()
{
    int applicable_passes = 0;
    for (bgfx_chain_entry* entry : m_entries)
	{
        if (!entry->skip())
        {
            applicable_passes++;
        }
    }

    return applicable_passes;
}