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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
//============================================================
//
// targetmanager.cpp - BGFX render target manager
//
// Maintains a per-screen string-to-entry mapping for any
// registered render targets.
//
//============================================================
#include <bgfx/bgfx.h>
#include <vector>
#include "modules/lib/osdobj_common.h"
#include "targetmanager.h"
#include "target.h"
const int32_t target_manager::MAX_SCREENS = 100;
target_manager::target_manager(texture_manager& textures)
: m_textures(textures)
, m_screen_count(0)
{
}
target_manager::~target_manager()
{
std::vector<bgfx_target*> to_delete;
for (std::pair<std::string, bgfx_target*> target : m_targets)
{
if (target.second != nullptr)
{
to_delete.push_back(target.second);
}
}
m_targets.clear();
for (uint32_t i = 0; i < to_delete.size(); i++)
{
delete to_delete[i];
}
}
bgfx_target* target_manager::create_target(std::string name, bgfx::TextureFormat::Enum format, uint16_t width, uint16_t height, uint32_t style, bool double_buffer, bool filter, uint16_t scale, uint32_t screen)
{
bgfx_target* target = new bgfx_target(name, format, width, height, style, double_buffer, filter, scale, screen);
m_targets[name + std::to_string(screen)] = target;
m_textures.add_provider(name + std::to_string(screen), target);
return target;
}
bgfx_target* target_manager::create_backbuffer(void *handle, uint16_t width, uint16_t height)
{
bgfx_target* target = new bgfx_target(handle, width, height);
m_targets["backbuffer"] = target;
return target;
}
bgfx_target* target_manager::target(uint32_t screen, std::string name)
{
std::string full_name = name + std::to_string(screen);
bgfx_target* target = m_targets[full_name];
if (target == nullptr)
{
osd_printf_verbose("Warning: Attempting to retrieve a nonexistent target '%s' for screen %d\n", name.c_str(), screen);
}
return target;
}
void target_manager::update_target_sizes(uint32_t screen, uint16_t width, uint16_t height, uint32_t style)
{
if (style == TARGET_STYLE_CUSTOM) return;
std::vector<osd_dim>& sizes = style == TARGET_STYLE_GUEST ? m_guest_dims : m_native_dims;
// Ensure that there's an entry to fill
while (sizes.size() <= screen)
{
sizes.push_back(osd_dim(0, 0));
}
if (width != sizes[screen].width() || height != sizes[screen].height())
{
sizes[screen] = osd_dim(width, height);
rebuild_targets(screen, style);
}
}
void target_manager::rebuild_targets(uint32_t screen, uint32_t style)
{
if (style == TARGET_STYLE_CUSTOM) return;
std::vector<bgfx_target*> to_resize;
for (std::pair<std::string, bgfx_target*> target_pair : m_targets)
{
bgfx_target* target = target_pair.second;
if (target == nullptr || target->style() != style || target->screen_index() != screen)
{
continue;
}
to_resize.push_back(target);
}
std::vector<osd_dim>& sizes = style == TARGET_STYLE_GUEST ? m_guest_dims : m_native_dims;
for (bgfx_target* target : to_resize)
{
std::string name = target->name();
const bgfx::TextureFormat::Enum format = target->format();
const bool double_buffered = target->double_buffered();
const bool filter = target->filter();
const uint16_t scale = target->scale();
const uint16_t width(sizes[screen].width());
const uint16_t height(sizes[screen].height());
delete target;
create_target(name, format, width, height, style, double_buffered, filter, scale, screen);
}
}
void target_manager::update_screen_count(uint32_t count)
{
// Ensure that there's an entry to fill
while (count > m_native_dims.size())
{
m_native_dims.push_back(osd_dim(0, 0));
}
if (count != m_screen_count)
{
uint32_t old_count = m_screen_count;
m_screen_count = count;
if (m_screen_count > old_count)
{
for (uint32_t screen = old_count; screen < m_screen_count; screen++)
{
create_target_if_nonexistent(screen, "output", false, false, TARGET_STYLE_NATIVE);
}
}
}
}
void target_manager::create_target_if_nonexistent(uint32_t screen, std::string name, bool double_buffered, bool filter, uint32_t style)
{
if (style == TARGET_STYLE_CUSTOM) return;
if (m_targets[name + std::to_string(screen)] != nullptr)
{
return;
}
std::vector<osd_dim>& sizes = style == TARGET_STYLE_GUEST ? m_guest_dims : m_native_dims;
uint16_t width(sizes[screen].width());
uint16_t height(sizes[screen].height());
create_target(name, bgfx::TextureFormat::RGBA8, width, height, style, double_buffered, filter, 1, screen);
}
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