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96eafad09d
beetle-psx-libretro/rsx/rsx_intf.cpp
barbudreadmon 96eafad09d sanitize gl context requests
2020-05-22 17:52:38 +02:00

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#include "rsx/rsx_intf.h"
#include <math.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "boolean.h"
#include "libretro.h"
#include "beetle_psx_globals.h"
#include "libretro_cbs.h"
#include "libretro_options.h"
#include "mednafen/mednafen.h"
#include "mednafen/psx/gpu.h"
#include "mednafen/settings.h"
#ifdef RSX_DUMP
#include "rsx_dump.h"
#endif
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
#include "rsx_lib_gl.h"
#endif
#if defined(HAVE_VULKAN)
#include "rsx_lib_vulkan.h"
#endif
extern bool fast_pal;
static enum rsx_renderer_type rsx_type = RSX_SOFTWARE;
static bool gl_initialized = false;
static bool vk_initialized = false;
// GPU reset defaults
static int rsx_width_mode = WIDTH_MODE_256;
static int rsx_height_mode = HEIGHT_MODE_240;
static bool rsx_soft_open(bool is_pal)
{
content_is_pal = is_pal;
return true;
}
void rsx_intf_set_environment(retro_environment_t cb)
{
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_environment(cb);
#endif
break;
}
}
void rsx_intf_set_video_refresh(retro_video_refresh_t cb)
{
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_video_refresh(cb);
#endif
break;
}
}
void rsx_intf_get_system_av_info(struct retro_system_av_info *info)
{
switch (rsx_type)
{
case RSX_SOFTWARE:
memset(info, 0, sizeof(*info));
info->timing.fps = rsx_common_get_timing_fps();
info->timing.sample_rate = SOUND_FREQUENCY;
info->geometry.base_width = MEDNAFEN_CORE_GEOMETRY_BASE_W;
info->geometry.base_height = MEDNAFEN_CORE_GEOMETRY_BASE_H;
info->geometry.max_width = MEDNAFEN_CORE_GEOMETRY_MAX_W << psx_gpu_upscale_shift;
info->geometry.max_height = MEDNAFEN_CORE_GEOMETRY_MAX_H << psx_gpu_upscale_shift;
info->geometry.aspect_ratio = rsx_common_get_aspect_ratio(content_is_pal, crop_overscan,
MDFN_GetSettingI(content_is_pal ? "psx.slstartp" : "psx.slstart"),
MDFN_GetSettingI(content_is_pal ? "psx.slendp" : "psx.slend"),
aspect_ratio_setting, false, widescreen_hack);
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_get_system_av_info(info);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_get_system_av_info(info);
#endif
break;
}
}
enum rsx_renderer_type rsx_intf_is_type(void)
{
return rsx_type;
}
inline void rsx_intf_dump_init(void)
{
#if defined(RSX_DUMP)
{
const char *env = getenv("RSX_DUMP");
if (env)
rsx_dump_init(env);
}
#endif
}
bool rsx_intf_open(bool is_pal, bool force_software)
{
struct retro_variable var = {0};
bool software_selected = false;
vk_initialized = false;
gl_initialized = false;
enum force_renderer_type force_type = AUTO;
var.key = BEETLE_OPT(renderer);
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (!strcmp(var.value, "software") || force_software)
software_selected = true;
else if (!strcmp(var.value, "hardware_gl"))
force_type = FORCE_OPENGL;
else if (!strcmp(var.value, "hardware_vk"))
force_type = FORCE_VULKAN;
}
else
{
/* If 'BEETLE_OPT(renderer)' option is not found, then
* we are running in software mode */
software_selected = true;
}
if (!software_selected)
{
/* Check for any hardware renderer forces before performing auto sequence */
if (force_type == FORCE_VULKAN)
{
#if defined (HAVE_VULKAN)
if (rsx_vulkan_open(is_pal))
{
rsx_type = RSX_VULKAN;
vk_initialized = true;
rsx_intf_dump_init();
return true;
}
else
{
MDFN_DispMessage("Could not force Vulkan renderer. Falling back to software renderer.");
goto soft;
}
#else
MDFN_DispMessage("Attempted to force Vulkan renderer, but core was built without it. Falling back to software renderer.");
goto soft;
#endif
}
else if (force_type == FORCE_OPENGL)
{
#if defined (HAVE_OPENGL) || defined(HAVE_OPENGLES)
if (rsx_gl_open(is_pal))
{
rsx_type = RSX_OPENGL;
gl_initialized = true;
rsx_intf_dump_init();
return true;
}
else
{
MDFN_DispMessage("Could not force OpenGL renderer. Falling back to software renderer.");
goto soft;
}
#else
MDFN_DispMessage("Attempted to force OpenGL renderer, but core was built without it. Falling back to software renderer.");
goto soft;
#endif
}
/* End forces section */
unsigned preferred = 0; // This will be set to RETRO_HW_CONTEXT_DUMMY if GET_PREFERRED_HW_RENDER is not supported by frontend
if (!environ_cb(RETRO_ENVIRONMENT_GET_PREFERRED_HW_RENDER, &preferred))
{
preferred = RETRO_HW_CONTEXT_DUMMY;
}
/* If GET_PREFERRED_HW_RENDER is not supported by frontend, then we just go
* down the list attempting to open a hardware renderer until we get one */
#if defined(HAVE_VULKAN)
if ((preferred == RETRO_HW_CONTEXT_DUMMY ||
preferred == RETRO_HW_CONTEXT_VULKAN)
&& rsx_vulkan_open(is_pal))
{
rsx_type = RSX_VULKAN;
vk_initialized = true;
rsx_intf_dump_init();
return true;
}
#endif
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
if ((preferred == RETRO_HW_CONTEXT_DUMMY ||
preferred == RETRO_HW_CONTEXT_OPENGL)
&& rsx_gl_open(is_pal))
{
rsx_type = RSX_OPENGL;
gl_initialized = true;
rsx_intf_dump_init();
return true;
}
if ((preferred == RETRO_HW_CONTEXT_DUMMY ||
preferred == RETRO_HW_CONTEXT_OPENGL_CORE)
&& rsx_gl_core_open(is_pal))
{
rsx_type = RSX_OPENGL;
gl_initialized = true;
rsx_intf_dump_init();
return true;
}
#endif
if (preferred == RETRO_HW_CONTEXT_DUMMY)
MDFN_DispMessage("No hardware renderers could be opened. Falling back to software renderer.");
else
MDFN_DispMessage("Unable to find or open hardware renderer for frontend preferred hardware context. Falling back to software renderer.");
}
soft:
// rsx_soft_open(is_pal) always returns true
if (rsx_soft_open(is_pal))
{
rsx_type = RSX_SOFTWARE;
rsx_intf_dump_init();
return true;
}
/* Note: fallback will result in the software renderer running at
* 1x internal resolution instead of the user configured setting
* because of the check_variables startup sequence in libretro.cpp;
* this is a good thing since emulation would likely slow to a crawl
* if the user had >2x IR for hardware rendering and that setting was
* retroactively applied that to software rendering fallback
*/
return false;
}
void rsx_intf_close(void)
{
#if defined(RSX_DUMP)
rsx_dump_deinit();
#endif
#if defined(HAVE_VULKAN)
if (rsx_type != RSX_SOFTWARE && vk_initialized)
return;
#endif
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
if (rsx_type != RSX_SOFTWARE && gl_initialized)
{
rsx_gl_close();
return;
}
#endif
}
void rsx_intf_refresh_variables(void)
{
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_refresh_variables();
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_refresh_variables();
#endif
break;
}
}
void rsx_intf_prepare_frame(void)
{
#ifdef RSX_DUMP
rsx_dump_prepare_frame();
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_prepare_frame();
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_prepare_frame();
#endif
break;
}
}
void rsx_intf_finalize_frame(const void *fb, unsigned width,
unsigned height, unsigned pitch)
{
#ifdef RSX_DUMP
rsx_dump_finalize_frame();
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
video_cb(fb, width, height, pitch);
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_finalize_frame(fb, width, height, pitch);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_finalize_frame(fb, width, height, pitch);
#endif
break;
}
}
void rsx_intf_set_tex_window(uint8_t tww, uint8_t twh,
uint8_t twx, uint8_t twy)
{
#ifdef RSX_DUMP
rsx_dump_set_tex_window(tww, twh, twx, twy);
#endif
switch (rsx_type)
{
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_set_tex_window(tww, twh, twx, twy);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_tex_window(tww, twh, twx, twy);
#endif
break;
default:
break;
}
}
void rsx_intf_set_mask_setting(uint32_t mask_set_or, uint32_t mask_eval_and)
{
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
break;
case RSX_VULKAN:
/* TODO/FIXME */
break;
}
}
void rsx_intf_set_draw_offset(int16_t x, int16_t y)
{
#ifdef RSX_DUMP
rsx_dump_set_draw_offset(x, y);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_set_draw_offset(x, y);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_draw_offset(x, y);
#endif
break;
}
}
void rsx_intf_set_draw_area(uint16_t x0, uint16_t y0,
uint16_t x1, uint16_t y1)
{
#ifdef RSX_DUMP
rsx_dump_set_draw_area(x0, y0, x1, y1);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_set_draw_area(x0, y0, x1, y1);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_draw_area(x0, y0, x1, y1);
#endif
break;
}
}
void rsx_intf_set_vram_framebuffer_coords(uint32_t xstart, uint32_t ystart)
{
#ifdef RSX_DUMP
rsx_dump_set_vram_framebuffer_coords(xstart, ystart);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_set_vram_framebuffer_coords(xstart, ystart);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_vram_framebuffer_coords(xstart, ystart);
#endif
break;
}
}
void rsx_intf_set_horizontal_display_range(uint16_t x1, uint16_t x2)
{
#ifdef RSX_DUMP
rsx_dump_set_horizontal_display_range(x1, x2);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_set_horizontal_display_range(x1, x2);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_horizontal_display_range(x1, x2);
#endif
break;
}
}
void rsx_intf_set_vertical_display_range(uint16_t y1, uint16_t y2)
{
#ifdef RSX_DUMP
rsx_dump_set_vertical_display_range(y1, y2);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_set_vertical_display_range(y1, y2);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_vertical_display_range(y1, y2);
#endif
break;
}
}
void rsx_intf_set_display_mode(bool depth_24bpp,
bool is_pal,
bool is_480i,
int width_mode)
{
#ifdef RSX_DUMP
rsx_dump_set_display_mode(depth_24bpp, is_pal, is_480i, width_mode);
#endif
// Is this check accurate for 240i timing? May need to be fixed later
if (currently_interlaced != is_480i)
{
currently_interlaced = is_480i;
interlace_setting_dirty = true;
}
// Also verify if this is accurate for 240i
if ((rsx_width_mode != width_mode) || (rsx_height_mode != (int)is_480i))
{
rsx_width_mode = width_mode;
rsx_height_mode = (int)is_480i;
aspect_ratio_dirty = true;
}
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_set_display_mode(depth_24bpp, is_pal, is_480i, width_mode);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_set_display_mode(depth_24bpp, is_pal, is_480i, width_mode);
#endif
break;
}
}
void rsx_intf_push_triangle(
float p0x, float p0y, float p0w,
float p1x, float p1y, float p1w,
float p2x, float p2y, float p2w,
uint32_t c0,
uint32_t c1,
uint32_t c2,
uint16_t t0x, uint16_t t0y,
uint16_t t1x, uint16_t t1y,
uint16_t t2x, uint16_t t2y,
uint16_t min_u, uint16_t min_v,
uint16_t max_u, uint16_t max_v,
uint16_t texpage_x, uint16_t texpage_y,
uint16_t clut_x, uint16_t clut_y,
uint8_t texture_blend_mode,
uint8_t depth_shift,
bool dither,
int blend_mode,
uint32_t mask_test,
uint32_t set_mask)
{
#ifdef RSX_DUMP
const rsx_dump_vertex vertices[3] = {
{ p0x, p0y, p0w, c0, t0x, t0y },
{ p1x, p1y, p1w, c1, t1x, t1y },
{ p2x, p2y, p2w, c2, t2x, t2y },
};
const rsx_render_state state = {
texpage_x, texpage_y, clut_x, clut_y, texture_blend_mode, depth_shift, dither, blend_mode,
mask_test, set_mask,
};
rsx_dump_triangle(vertices, &state);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_push_triangle(p0x, p0y, p0w, p1x, p1y, p1w, p2x, p2y, p2w,
c0, c1, c2, t0x, t0y, t1x, t1y, t2x, t2y,
min_u, min_v, max_u, max_v,
texpage_x, texpage_y, clut_x, clut_y,
texture_blend_mode,
depth_shift,
dither,
blend_mode, mask_test != 0, set_mask != 0);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_push_triangle(p0x, p0y, p0w, p1x, p1y, p1w, p2x, p2y, p2w,
c0, c1, c2, t0x, t0y, t1x, t1y, t2x, t2y,
min_u, min_v, max_u, max_v,
texpage_x, texpage_y, clut_x, clut_y,
texture_blend_mode,
depth_shift,
dither,
blend_mode, mask_test != 0, set_mask != 0);
#endif
break;
}
}
void rsx_intf_push_quad(
float p0x, float p0y, float p0w,
float p1x, float p1y, float p1w,
float p2x, float p2y, float p2w,
float p3x, float p3y, float p3w,
uint32_t c0, uint32_t c1, uint32_t c2, uint32_t c3,
uint16_t t0x, uint16_t t0y,
uint16_t t1x, uint16_t t1y,
uint16_t t2x, uint16_t t2y,
uint16_t t3x, uint16_t t3y,
uint16_t min_u, uint16_t min_v,
uint16_t max_u, uint16_t max_v,
uint16_t texpage_x, uint16_t texpage_y,
uint16_t clut_x, uint16_t clut_y,
uint8_t texture_blend_mode,
uint8_t depth_shift,
bool dither,
int blend_mode,
uint32_t mask_test,
uint32_t set_mask)
{
#ifdef RSX_DUMP
const rsx_dump_vertex vertices[4] = {
{ p0x, p0y, p0w, c0, t0x, t0y },
{ p1x, p1y, p1w, c1, t1x, t1y },
{ p2x, p2y, p2w, c2, t2x, t2y },
{ p3x, p3y, p3w, c3, t3x, t3y },
};
const rsx_render_state state = {
texpage_x, texpage_y, clut_x, clut_y, texture_blend_mode, depth_shift, dither, blend_mode,
mask_test, set_mask,
};
rsx_dump_quad(vertices, &state);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_push_quad(p0x, p0y, p0w, p1x, p1y, p1w, p2x, p2y, p2w, p3x, p3y, p3w,
c0, c1, c2, c3,
t0x, t0y, t1x, t1y, t2x, t2y, t3x, t3y,
min_u, min_v, max_u, max_v,
texpage_x, texpage_y, clut_x, clut_y,
texture_blend_mode,
depth_shift,
dither,
blend_mode, mask_test != 0, set_mask != 0);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_push_quad(p0x, p0y, p0w, p1x, p1y, p1w, p2x, p2y, p2w, p3x, p3y, p3w,
c0, c1, c2, c3,
t0x, t0y, t1x, t1y, t2x, t2y, t3x, t3y,
min_u, min_v, max_u, max_v,
texpage_x, texpage_y, clut_x, clut_y,
texture_blend_mode,
depth_shift,
dither,
blend_mode, mask_test != 0, set_mask != 0);
#endif
break;
}
}
void rsx_intf_push_line(int16_t p0x, int16_t p0y,
int16_t p1x, int16_t p1y,
uint32_t c0, uint32_t c1,
bool dither,
int blend_mode,
uint32_t mask_test,
uint32_t set_mask)
{
#ifdef RSX_DUMP
const rsx_dump_line_data line = {
p0x, p0y, p1x, p1y, c0, c1, dither, blend_mode,
mask_test != 0, set_mask != 0,
};
rsx_dump_line(&line);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_push_line(p0x, p0y, p1x, p1y, c0, c1, dither, blend_mode, mask_test != 0, set_mask != 0);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_push_line(p0x, p0y, p1x, p1y, c0, c1, dither, blend_mode, mask_test != 0, set_mask != 0);
#endif
break;
}
}
bool rsx_intf_read_vram(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t *vram)
{
switch (rsx_type)
{
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
return rsx_vulkan_read_vram(x, y, w, h, vram);
#endif
break;
default:
break;
}
return false;
}
void rsx_intf_load_image(uint16_t x, uint16_t y,
uint16_t w, uint16_t h,
uint16_t *vram, uint32_t mask_test, uint32_t set_mask)
{
#ifdef RSX_DUMP
rsx_dump_load_image(x, y, w, h, vram, mask_test != 0, set_mask != 0);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_load_image(x, y, w, h, vram, mask_test, set_mask);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_load_image(x, y, w, h, vram, mask_test, set_mask);
#endif
break;
}
}
void rsx_intf_fill_rect(uint32_t color,
uint16_t x, uint16_t y,
uint16_t w, uint16_t h)
{
#ifdef RSX_DUMP
rsx_dump_fill_rect(color, x, y, w, h);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_fill_rect(color, x, y, w, h);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_fill_rect(color, x, y, w, h);
#endif
break;
}
}
void rsx_intf_copy_rect(uint16_t src_x, uint16_t src_y,
uint16_t dst_x, uint16_t dst_y,
uint16_t w, uint16_t h,
uint32_t mask_test, uint32_t set_mask)
{
#ifdef RSX_DUMP
rsx_dump_copy_rect(src_x, src_y, dst_x, dst_y, w, h, mask_test != 0, set_mask != 0);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_copy_rect(src_x, src_y, dst_x, dst_y,
w, h, mask_test, set_mask);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_copy_rect(src_x, src_y, dst_x, dst_y, w, h, mask_test, set_mask);
#endif
break;
}
}
bool rsx_intf_has_software_renderer(void)
{
switch (rsx_type)
{
case RSX_SOFTWARE:
return true;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
return rsx_gl_has_software_renderer();
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
return rsx_vulkan_has_software_renderer();
#else
break;
#endif
}
return false;
}
void rsx_intf_toggle_display(bool status)
{
#ifdef RSX_DUMP
rsx_dump_toggle_display(status);
#endif
switch (rsx_type)
{
case RSX_SOFTWARE:
break;
case RSX_OPENGL:
#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
rsx_gl_toggle_display(status);
#endif
break;
case RSX_VULKAN:
#if defined(HAVE_VULKAN)
rsx_vulkan_toggle_display(status);
#endif
break;
}
}
double rsx_common_get_timing_fps(void)
{
bool pal_timings = content_is_pal && !fast_pal;
if (core_timing_fps_mode == FORCE_PROGRESSIVE_TIMING)
return (pal_timings ? FPS_PAL_NONINTERLACED : FPS_NTSC_NONINTERLACED);
else if (core_timing_fps_mode == FORCE_INTERLACED_TIMING)
return (pal_timings ? FPS_PAL_INTERLACED : FPS_NTSC_INTERLACED);
//else AUTO_TOGGLE_TIMING
return (pal_timings ?
(currently_interlaced ? FPS_PAL_INTERLACED : FPS_PAL_NONINTERLACED) :
(currently_interlaced ? FPS_NTSC_INTERLACED : FPS_NTSC_NONINTERLACED));
}
float rsx_common_get_aspect_ratio(bool pal_content, bool crop_overscan,
int first_visible_scanline, int last_visible_scanline,
int aspect_ratio_setting, bool vram_override, bool widescreen_override)
{
// Current assumptions
// A fixed percentage of width is cropped when crop_overscan is true
// aspect_ratio_setting is one of the following:
// 0 - Corrected
// 1 - Uncorrected (1:1 PAR)
// 2 - Force 4:3 (traditionally what Beetle PSX has done prior to adding in this setting)
// 3 - Force NTSC (get corrected NTSC aspect ratio even with PAL games)
// Aspect ratio overrides - VRAM and widescreen take precedence
if (vram_override)
return 2.0 / 1.0;
if (widescreen_override)
return 16.0 / 9.0;
float ar = (4.0 / 3.0);
if (aspect_ratio_setting == 0) // Corrected
{
// Calculate horizontal scaling in terms of gpu clock cycles
ar *= (crop_overscan ? (2560.0 / 2800.0) : 1.0);
// Calculate vertical scaling in terms of visible scanline count
int num_vis_scanlines = last_visible_scanline - first_visible_scanline + 1;
ar *= (pal_content ? (288.0 / num_vis_scanlines) : (240.0 / num_vis_scanlines));
return ar;
}
else if (aspect_ratio_setting == 1) // Uncorrected
{
int width_base = 0;
switch (rsx_width_mode)
{
case WIDTH_MODE_256:
width_base = crop_overscan ? 256 : 280;
break;
case WIDTH_MODE_320:
width_base = crop_overscan ? 320 : 350;
break;
case WIDTH_MODE_512:
width_base = crop_overscan ? 512 : 560;
break;
case WIDTH_MODE_640:
width_base = crop_overscan ? 640 : 700;
break;
case WIDTH_MODE_368:
// Probably slightly off because of rounding, see libretro.cpp comments
width_base = crop_overscan ? 366 : 400;
break;
}
double height_base = (last_visible_scanline - first_visible_scanline + 1) *
(rsx_height_mode == HEIGHT_MODE_480 ? 2.0 : 1.0);
// Calculate aspect ratio as quotient of raw native framebuffer width and height
return width_base / height_base;
}
else if (aspect_ratio_setting == 3) // Force NTSC
{
ar *= (crop_overscan ? (2560.0 / 2800.0) : 1.0);
int num_vis_scanlines = last_visible_scanline - first_visible_scanline + 1;
ar *= (240.0 / num_vis_scanlines);
return ar;
}
return ar; // 4:3
}
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