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/*
* Copyright (C) 2002-2021 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef DOSBOX_RENDER_H
#define DOSBOX_RENDER_H
// 0: complex scalers off, scaler cache off, some simple scalers off, memory requirements reduced
// 1: complex scalers off, scaler cache off, all simple scalers on
// 2: complex scalers off, scaler cache on
// 3: complex scalers on
#define RENDER_USE_ADVANCED_SCALERS 3
#include <deque>
#include <string>
#include "../src/gui/render_scalers.h"
#define RENDER_SKIP_CACHE 16
// Enable this for scalers to support 0 input for empty lines
//#define RENDER_NULL_INPUT
struct RenderPal_t {
struct {
uint8_t red = 0;
uint8_t green = 0;
uint8_t blue = 0;
uint8_t unused = 0;
} rgb[256] = {};
union {
uint16_t b16[256];
uint32_t b32[256] = {};
} lut = {};
bool changed = false;
uint8_t modified[256] = {};
uint32_t first = 0;
uint32_t last = 0;
};
struct Render_t {
struct {
uint32_t width = 0;
uint32_t start = 0;
uint32_t height = 0;
unsigned bpp = 0;
bool dblw = false;
bool dblh = false;
double ratio = 0;
double fps = 0;
} src = {};
struct {
int count = 0;
int max = 0;
uint32_t index = 0;
uint8_t hadSkip[RENDER_SKIP_CACHE] = {};
} frameskip = {};
struct {
uint32_t size = 0;
scalerMode_t inMode = {};
scalerMode_t outMode = {};
scalerOperation_t op = {};
bool clearCache = false;
bool forced = false;
ScalerLineHandler_t lineHandler = nullptr;
ScalerLineHandler_t linePalHandler = nullptr;
ScalerComplexHandler_t complexHandler = nullptr;
uint32_t blocks = 0;
uint32_t lastBlock = 0;
int outPitch = 0;
uint8_t *outWrite = nullptr;
uint32_t cachePitch = 0;
uint8_t *cacheRead = nullptr;
uint32_t inHeight = 0;
uint32_t inLine = 0;
uint32_t outLine = 0;
} scale = {};
#if C_OPENGL
struct {
std::string filename = {};
std::string source = {};
bool use_srgb_texture = false;
bool use_srgb_framebuffer = false;
} shader = {};
#endif
RenderPal_t pal = {};
bool updating = false;
bool active = false;
bool aspect = true;
bool fullFrame = true;
};
extern Render_t render;
extern ScalerLineHandler_t RENDER_DrawLine;
std::deque<std::string> RENDER_InventoryShaders();
void RENDER_SetSize(uint32_t width, uint32_t height, unsigned bpp, double fps,
double ratio, bool dblw, bool dblh);
bool RENDER_StartUpdate(void);
void RENDER_EndUpdate(bool abort);
void RENDER_InitShaderSource([[maybe_unused]] Section *sec);
void RENDER_SetPal(uint8_t entry, uint8_t red, uint8_t green, uint8_t blue);
#if C_OPENGL
bool RENDER_UseSRGBTexture();
bool RENDER_UseSRGBFramebuffer();
#endif
#endif
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