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Rolling Scanline Simulation #16282

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Mar 19, 2024
Merged

Rolling Scanline Simulation #16282

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5 changes: 5 additions & 0 deletions config.def.h
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Original file line number Diff line number Diff line change
Expand Up @@ -401,6 +401,11 @@
*/
#define DEFAULT_SHADER_SUBFRAMES 1

/* Divides implements basic rolling scanning of sub frames - does this simply by scrolling a
* a scissor rect down the screen according to how many sub frames there are
*/
#define DEFAULT_SCAN_SUBFRAMES false

/* Inserts black frame(s) inbetween frames.
* Useful for Higher Hz monitors (set to multiples of 60 Hz) who want to play 60 Hz
* material with CRT-like motion clarity.
Expand Down
2 changes: 2 additions & 0 deletions configuration.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1806,6 +1806,8 @@ static struct config_bool_setting *populate_settings_bool(
/* Let implementation decide if automatic, or 1:1 PAR. */
SETTING_BOOL("video_aspect_ratio_auto", &settings->bools.video_aspect_ratio_auto, true, DEFAULT_ASPECT_RATIO_AUTO, false);

SETTING_BOOL("video_scan_subframes", &settings->bools.video_scan_subframes, true, DEFAULT_SCAN_SUBFRAMES, false);

SETTING_BOOL("video_allow_rotate", &settings->bools.video_allow_rotate, true, DEFAULT_ALLOW_ROTATE, false);
SETTING_BOOL("video_windowed_fullscreen", &settings->bools.video_windowed_fullscreen, true, DEFAULT_WINDOWED_FULLSCREEN, false);
SETTING_BOOL("video_crop_overscan", &settings->bools.video_crop_overscan, true, DEFAULT_CROP_OVERSCAN, false);
Expand Down
1 change: 1 addition & 0 deletions configuration.h
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Original file line number Diff line number Diff line change
Expand Up @@ -597,6 +597,7 @@ typedef struct settings
bool video_shader_watch_files;
bool video_shader_remember_last_dir;
bool video_shader_preset_save_reference_enable;
bool video_scan_subframes;
bool video_threaded;
bool video_font_enable;
bool video_disable_composition;
Expand Down
79 changes: 79 additions & 0 deletions gfx/drivers/d3d10.c
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,8 @@
#error "UWP does not support D3D10"
#endif

#define D3D10_ROLLING_SCANLINE_SIMULATION

typedef struct
{
d3d10_texture_t texture;
Expand Down Expand Up @@ -2417,6 +2419,41 @@ static bool d3d10_gfx_frame(
context->lpVtbl->RSSetViewports(context, 1,
&d3d10->pass[i].viewport);

#ifdef D3D10_ROLLING_SCANLINE_SIMULATION
if ( (video_info->shader_subframes > 1)
&& (video_info->scan_subframes)
&& !black_frame_insertion
&& !nonblock_state
&& !runloop_is_slowmotion
&& !runloop_is_paused
&& (!(d3d10->flags & D3D10_ST_FLAG_MENU_ENABLE)))
{
D3D10_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = (unsigned int)(((float)d3d10->pass[i].viewport.Height / (float)video_info->shader_subframes)
* (float)video_info->current_subframe);
scissor_rect.right = d3d10->pass[i].viewport.Width ;
scissor_rect.bottom = (unsigned int)(((float)d3d10->pass[i].viewport.Height / (float)video_info->shader_subframes)
* (float)(video_info->current_subframe + 1));

d3d10->device->lpVtbl->RSSetScissorRects(d3d10->device, 1,
&scissor_rect);
}
else
{
D3D10_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = 0;
scissor_rect.right = d3d10->pass[i].viewport.Width;
scissor_rect.bottom = d3d10->pass[i].viewport.Height;

d3d10->device->lpVtbl->RSSetScissorRects(d3d10->device, 1,
&scissor_rect);
}
#endif // D3D10_ROLLING_SCANLINE_SIMULATION

context->lpVtbl->Draw(context, 4, 0);
texture = &d3d10->pass[i].rt;
}
Expand Down Expand Up @@ -2448,6 +2485,29 @@ static bool d3d10_gfx_frame(
d3d10->clearcolor);
context->lpVtbl->RSSetViewports(context, 1, &d3d10->frame.viewport);

#ifdef D3D10_ROLLING_SCANLINE_SIMULATION
if ( (video_info->shader_subframes > 1)
&& (video_info->scan_subframes)
&& !black_frame_insertion
&& !nonblock_state
&& !runloop_is_slowmotion
&& !runloop_is_paused
&& (!(d3d10->flags & D3D10_ST_FLAG_MENU_ENABLE)))
{
D3D10_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = (unsigned int)(((float)video_height / (float)video_info->shader_subframes)
* (float)video_info->current_subframe);
scissor_rect.right = video_width ;
scissor_rect.bottom = (unsigned int)(((float)video_height / (float)video_info->shader_subframes)
* (float)(video_info->current_subframe + 1));

d3d10->device->lpVtbl->RSSetScissorRects(d3d10->device, 1,
&scissor_rect);
}
else
#endif // D3D10_ROLLING_SCANLINE_SIMULATION
{
D3D10_RECT scissor_rect;

Expand All @@ -2464,6 +2524,20 @@ static bool d3d10_gfx_frame(
context->lpVtbl->OMSetBlendState(context, d3d10->blend_enable, NULL,
D3D10_DEFAULT_SAMPLE_MASK);

#ifdef D3D10_ROLLING_SCANLINE_SIMULATION
{
D3D10_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = 0;
scissor_rect.right = video_width;
scissor_rect.bottom = video_height;

d3d10->device->lpVtbl->RSSetScissorRects(d3d10->device, 1,
&scissor_rect);
}
#endif // D3D10_ROLLING_SCANLINE_SIMULATION

if ( (d3d10->flags & D3D10_ST_FLAG_MENU_ENABLE)
&& d3d10->menu.texture.handle)
{
Expand Down Expand Up @@ -2622,8 +2696,13 @@ static bool d3d10_gfx_frame(
&& (!(d3d10->flags & D3D10_ST_FLAG_FRAME_DUPE_LOCK)))
{
d3d10->flags |= D3D10_ST_FLAG_FRAME_DUPE_LOCK;

for (k = 1; k < video_info->shader_subframes; k++)
{
#ifdef D3D10_ROLLING_SCANLINE_SIMULATION
video_info->current_subframe = k;
#endif // D3D10_ROLLING_SCANLINE_SIMULATION

if (d3d10->shader_preset)
for (m = 0; m < d3d10->shader_preset->passes; m++)
{
Expand Down
86 changes: 85 additions & 1 deletion gfx/drivers/d3d11.c
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Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,8 @@ const GUID DECLSPEC_SELECTANY libretro_IID_IDXGIFactory5 = { 0x7632e1f5,0xee65,0
#endif
#endif

#define D3D11_ROLLING_SCANLINE_SIMULATION

/* Temporary workaround for d3d11 not being able to poll flags during init */
static gfx_ctx_driver_t d3d11_fake_context;

Expand Down Expand Up @@ -3025,7 +3027,23 @@ static bool d3d11_gfx_frame(
context, width, height, pitch, d3d11->format, frame, &d3d11->frame.texture[0]);
}

context->lpVtbl->RSSetState(context, d3d11->scissor_disabled);
#ifdef D3D11_ROLLING_SCANLINE_SIMULATION
if ( (video_info->shader_subframes > 1)
&& (video_info->scan_subframes)
&& !black_frame_insertion
&& !nonblock_state
&& !runloop_is_slowmotion
&& !runloop_is_paused
&& (!(d3d11->flags & D3D11_ST_FLAG_MENU_ENABLE)))
{
context->lpVtbl->RSSetState(context, d3d11->scissor_enabled);
}
else
#endif // D3D11_ROLLING_SCANLINE_SIMULATION
{
context->lpVtbl->RSSetState(context, d3d11->scissor_disabled);
}

d3d11->context->lpVtbl->OMSetBlendState(
d3d11->context, d3d11->blend_disable,
NULL, D3D11_DEFAULT_SAMPLE_MASK);
Expand Down Expand Up @@ -3158,6 +3176,41 @@ static bool d3d11_gfx_frame(
&d3d11->pass[i].rt.rt_view, NULL);
context->lpVtbl->RSSetViewports(context, 1, &d3d11->pass[i].viewport);

#ifdef D3D11_ROLLING_SCANLINE_SIMULATION
if ( (video_info->shader_subframes > 1)
&& (video_info->scan_subframes)
&& !black_frame_insertion
&& !nonblock_state
&& !runloop_is_slowmotion
&& !runloop_is_paused
&& (!(d3d11->flags & D3D11_ST_FLAG_MENU_ENABLE)))
{
D3D11_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = (unsigned int)(((float)d3d11->pass[i].viewport.Height / (float)video_info->shader_subframes)
* (float)video_info->current_subframe);
scissor_rect.right = d3d11->pass[i].viewport.Width ;
scissor_rect.bottom = (unsigned int)(((float)d3d11->pass[i].viewport.Height / (float)video_info->shader_subframes)
* (float)(video_info->current_subframe + 1));

d3d11->context->lpVtbl->RSSetScissorRects(d3d11->context, 1,
&scissor_rect);
}
else
{
D3D11_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = 0;
scissor_rect.right = d3d11->pass[i].viewport.Width;
scissor_rect.bottom = d3d11->pass[i].viewport.Height;

d3d11->context->lpVtbl->RSSetScissorRects(d3d11->context, 1,
&scissor_rect);
}
#endif // D3D11_ROLLING_SCANLINE_SIMULATION

if (i == d3d11->shader_preset->passes - 1)
context->lpVtbl->Draw(context, 4, 0);
else
Expand Down Expand Up @@ -3204,6 +3257,33 @@ static bool d3d11_gfx_frame(
context->lpVtbl->VSSetConstantBuffers(context, 0, 1, &d3d11->frame.ubo);
}

#ifdef D3D11_ROLLING_SCANLINE_SIMULATION
if ( (video_info->shader_subframes > 1)
&& (video_info->scan_subframes)
&& !black_frame_insertion
&& !nonblock_state
&& !runloop_is_slowmotion
&& !runloop_is_paused
&& (!(d3d11->flags & D3D11_ST_FLAG_MENU_ENABLE)))
{
D3D11_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = (unsigned int)(((float)video_height / (float)video_info->shader_subframes)
* (float)video_info->current_subframe);
scissor_rect.right = video_width ;
scissor_rect.bottom = (unsigned int)(((float)video_height / (float)video_info->shader_subframes)
* (float)(video_info->current_subframe + 1));

d3d11->context->lpVtbl->RSSetScissorRects(d3d11->context, 1,
&scissor_rect);
}
else
{
d3d11->context->lpVtbl->RSSetScissorRects(d3d11->context, 1, &d3d11->scissor);
}
#endif // D3D11_ROLLING_SCANLINE_SIMULATION

context->lpVtbl->Draw(context, 4, 0);
context->lpVtbl->RSSetState(context, d3d11->scissor_enabled);
d3d11->context->lpVtbl->RSSetScissorRects(d3d11->context, 1, &d3d11->scissor);
Expand Down Expand Up @@ -3458,6 +3538,10 @@ static bool d3d11_gfx_frame(
d3d11->flags |= D3D11_ST_FLAG_FRAME_DUPE_LOCK;
for (k = 1; k < video_info->shader_subframes; k++)
{
#ifdef D3D11_ROLLING_SCANLINE_SIMULATION
video_info->current_subframe = k;
#endif // D3D11_ROLLING_SCANLINE_SIMULATION

if (d3d11->shader_preset)
for (m = 0; m < d3d11->shader_preset->passes; m++)
{
Expand Down
62 changes: 59 additions & 3 deletions gfx/drivers/d3d12.c
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,8 @@
} \
}

#define D3D12_ROLLING_SCANLINE_SIMULATION

typedef struct
{
d3d12_texture_t texture;
Expand Down Expand Up @@ -3748,8 +3750,33 @@ static bool d3d12_gfx_frame(
#endif
cmd->lpVtbl->RSSetViewports(cmd, 1,
&d3d12->pass[i].viewport);
cmd->lpVtbl->RSSetScissorRects(cmd, 1,
&d3d12->pass[i].scissorRect);

#ifdef D3D12_ROLLING_SCANLINE_SIMULATION
if ( (video_info->shader_subframes > 1)
&& (video_info->scan_subframes)
&& !black_frame_insertion
&& !nonblock_state
&& !runloop_is_slowmotion
&& !runloop_is_paused
&& (!(d3d12->flags & D3D12_ST_FLAG_MENU_ENABLE)))
{
D3D12_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = (unsigned int)(((float)d3d12->pass[i].viewport.Height / (float)video_info->shader_subframes)
* (float)video_info->current_subframe);
scissor_rect.right = d3d12->pass[i].viewport.Width;
scissor_rect.bottom = (unsigned int)(((float)d3d12->pass[i].viewport.Height / (float)video_info->shader_subframes)
* (float)(video_info->current_subframe + 1));

cmd->lpVtbl->RSSetScissorRects(cmd, 1, &scissor_rect);
}
else
#endif // D3D12_ROLLING_SCANLINE_SIMULATION
{
cmd->lpVtbl->RSSetScissorRects(cmd, 1,
&d3d12->pass[i].scissorRect);
}

if (i == d3d12->shader_preset->passes - 1)
start_vertex_location = 0;
Expand Down Expand Up @@ -3836,7 +3863,32 @@ static bool d3d12_gfx_frame(
}

cmd->lpVtbl->RSSetViewports(cmd, 1, &d3d12->frame.viewport);
cmd->lpVtbl->RSSetScissorRects(cmd, 1, &d3d12->frame.scissorRect);

#ifdef D3D12_ROLLING_SCANLINE_SIMULATION
if ( (video_info->shader_subframes > 1)
&& (video_info->scan_subframes)
&& !black_frame_insertion
&& !nonblock_state
&& !runloop_is_slowmotion
&& !runloop_is_paused
&& (!(d3d12->flags & D3D12_ST_FLAG_MENU_ENABLE)))
{
D3D12_RECT scissor_rect;

scissor_rect.left = 0;
scissor_rect.top = (unsigned int)(((float)video_height / (float)video_info->shader_subframes)
* (float)video_info->current_subframe);
scissor_rect.right = video_width ;
scissor_rect.bottom = (unsigned int)(((float)video_height / (float)video_info->shader_subframes)
* (float)(video_info->current_subframe + 1));

cmd->lpVtbl->RSSetScissorRects(cmd, 1, &scissor_rect);
}
else
#endif // D3D12_ROLLING_SCANLINE_SIMULATION
{
cmd->lpVtbl->RSSetScissorRects(cmd, 1, &d3d12->frame.scissorRect);
}

cmd->lpVtbl->DrawInstanced(cmd, 4, 1, 0, 0);

Expand Down Expand Up @@ -4046,6 +4098,10 @@ static bool d3d12_gfx_frame(
d3d12->flags |= D3D12_ST_FLAG_FRAME_DUPE_LOCK;
for (k = 1; k < video_info->shader_subframes; k++)
{
#ifdef D3D12_ROLLING_SCANLINE_SIMULATION
video_info->current_subframe = k;
#endif // D3D12_ROLLING_SCANLINE_SIMULATION

if (d3d12->shader_preset)
for (m = 0; m < d3d12->shader_preset->passes; m++)
{
Expand Down
19 changes: 19 additions & 0 deletions gfx/drivers/gl3.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2604,6 +2604,25 @@ static bool gl3_frame(void *data, const void *frame,
gl->filter_chain, 1);
}

#ifdef GL3_ROLLING_SCANLINE_SIMULATION
if ( (video_info->shader_subframes > 1)
&& (video_info->scan_subframes)
&& !video_info->black_frame_insertion
&& !video_info->input_driver_nonblock_state
&& !video_info->runloop_is_slowmotion
&& !video_info->runloop_is_paused
&& (!(gl->flags & GL3_FLAG_MENU_TEXTURE_ENABLE)))
{
gl3_filter_chain_set_simulate_scanline(
gl->filter_chain, true);
}
else
{
gl3_filter_chain_set_simulate_scanline(
gl->filter_chain, false);
}
#endif // GL3_ROLLING_SCANLINE_SIMULATION

gl3_filter_chain_set_input_texture(gl->filter_chain, &texture);
gl3_filter_chain_build_offscreen_passes(gl->filter_chain,
&gl->filter_chain_vp);
Expand Down
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