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Refactored distortion pass

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- separated curvature parameter into distortion, cubic_distortion and distort_corner
- distortion and cubic_distortion can be negative, to compensate each other
- distort_corner is intependent from the image distortion
This commit is contained in:
ImJezze 2016-04-18 20:25:28 +02:00
parent a86983713d
commit 8ed3a7d94a
13 changed files with 93 additions and 32 deletions
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4
docs/hlsl.txt
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@ -27,7 +27,9 @@ shadow_mask_usize 0.0 to 1.0 The size of one shadow mask tile in U/V
shadow_mask_vsize 0.0 to 1.0 The shadow mask textures always has a size of power-of-two.
shadow_mask_voffset -1.0 to 1.0 The offset of the shadow mask texture in U/V coordinates.
shadow_mask_voffset -1.0 to 1.0 An offset of 1.0 repressents one pixel on screen.
curvature 0.0 to 1.0 Curvature amount of the screen.
distortion -1.0 to 1.0 Distortion amount of the screen.
cubic_distortion -1.0 to 1.0 Cubic Distortion amount of the screen.
distort_corner 0.0 to 1.0 Distorted corners amount of the screen.
round_corner 0.0 to 1.0 Rounded corners amount of the screen.
smooth_border 0.0 to 1.0 Smooth borders amount of the screen.
reflection 0.0 to 1.0 Refelection amount of the screen highlight.

39
hlsl/distortion.fx
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@ -111,7 +111,9 @@ VS_OUTPUT vs_main(VS_INPUT Input)
// Distortion Pixel Shader
//-----------------------------------------------------------------------------
uniform float CurvatureAmount = 0.0f;
uniform float DistortionAmount = 0.0f; // k - quartic distortion coefficient
uniform float CubicDistortionAmount = 0.0f; // kcube - cubic distortion modifier
uniform float DistortCornerAmount = 0.0f;
uniform float RoundCornerAmount = 0.0f;
uniform float SmoothBorderAmount = 0.0f;
uniform float VignettingAmount = 0.0f;
@ -195,13 +197,13 @@ float GetRoundCornerFactor(float2 coord, float radiusAmount, float smoothAmount)
}
// www.francois-tarlier.com/blog/cubic-lens-distortion-shader/
float2 GetDistortedCoords(float2 centerCoord, float amount)
float2 GetDistortedCoords(float2 centerCoord, float amount, float amountCube)
{
// lens distortion coefficient
float k = amount;
// cubic distortion value
float kcube = amount * 2.0f;
float kcube = amountCube;
// compute cubic distortion factor
float r2 = centerCoord.x * centerCoord.x + centerCoord.y * centerCoord.y;
@ -210,7 +212,7 @@ float2 GetDistortedCoords(float2 centerCoord, float amount)
: 1.0f + r2 * (k + kcube * sqrt(r2));
// fit screen bounds
f /= 1.0f + amount * 0.5f;
f /= 1.0f + amount * 0.25 + amountCube * 0.125f;
// apply cubic distortion factor
centerCoord *= f;
@ -218,13 +220,13 @@ float2 GetDistortedCoords(float2 centerCoord, float amount)
return centerCoord;
}
float2 GetCoords(float2 coord, float distortionAmount)
float2 GetCoords(float2 coord, float distortionAmount, float cubicDistortionAmount)
{
// center coordinates
coord -= 0.5f;
// distort coordinates
coord = GetDistortedCoords(coord, distortionAmount);
coord = GetDistortedCoords(coord, distortionAmount, cubicDistortionAmount);
// un-center coordinates
coord += 0.5f;
@ -234,18 +236,33 @@ float2 GetCoords(float2 coord, float distortionAmount)
float4 ps_main(PS_INPUT Input) : COLOR
{
float distortionAmount = DistortionAmount;
float cubicDistortionAmount = CubicDistortionAmount > 0
? CubicDistortionAmount * 1.1 // cubic distortion need to be a little higher to compensate the quartic distortion
: CubicDistortionAmount * 1.2; // negativ values even more
float2 TexelDims = 1.0f / TargetDims;
// Screen Curvature
float2 TexCoord = GetCoords(Input.TexCoord, CurvatureAmount * 0.25f); // reduced amount
float2 TexCoord = GetCoords(Input.TexCoord, distortionAmount, cubicDistortionAmount);
// Corner Curvature
float2 CornerCoord = GetCoords(Input.TexCoord, DistortCornerAmount, 0.0f);
// clip border
clip(TexCoord < 0.0f - TexelDims || TexCoord > 1.0f + TexelDims ? -1 : 1);
float2 TexCoordCentered = TexCoord;
TexCoordCentered -= 0.5f;
float2 CornerCoordCentered = CornerCoord;
CornerCoordCentered -= 0.5f;
// Color
float4 BaseColor = tex2D(DiffuseSampler, TexCoord);
BaseColor.a = 1.0f;
// Vignetting Simulation
float2 VignetteCoord = TexCoordCentered;
float2 VignetteCoord = CornerCoordCentered;
float VignetteFactor = GetVignetteFactor(VignetteCoord, VignettingAmount);
BaseColor.rgb *= VignetteFactor;
@ -253,15 +270,15 @@ float4 ps_main(PS_INPUT Input) : COLOR
// Light Reflection Simulation
float3 LightColor = float3(1.0f, 0.90f, 0.80f); // color temperature 5.000 Kelvin
float2 SpotCoord = TexCoordCentered;
float2 NoiseCoord = TexCoordCentered;
float2 SpotCoord = CornerCoordCentered;
float2 NoiseCoord = CornerCoordCentered;
float SpotAddend = GetSpotAddend(SpotCoord, ReflectionAmount);
float NoiseFactor = GetNoiseFactor(SpotAddend, random(NoiseCoord));
BaseColor.rgb += SpotAddend * NoiseFactor * LightColor;
// Round Corners Simulation
float2 RoundCornerCoord = TexCoordCentered;
float2 RoundCornerCoord = CornerCoordCentered;
float roundCornerFactor = GetRoundCornerFactor(RoundCornerCoord, RoundCornerAmount, SmoothBorderAmount);
BaseColor.rgb *= roundCornerFactor;

4
ini/presets/gameboy.ini
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@ -10,7 +10,9 @@ shadow_mask_usize 0.5
shadow_mask_vsize 0.5
shadow_mask_uoffset 0.0
shadow_mask_voffset 0.0
curvature 0.0
distortion 0.0
cubic_distortion 0.0
distort_corner 0.0
round_corner 0.0
smooth_border 0.0
reflection 0.0

4
ini/presets/gba.ini
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@ -10,7 +10,9 @@ shadow_mask_usize 0.1875
shadow_mask_vsize 0.1875
shadow_mask_uoffset 0.0
shadow_mask_voffset 0.0
curvature 0.0
distortion 0.0
cubic_distortion 0.0
distort_corner 0.0
round_corner 0.0
smooth_border 0.0
reflection 0.0

4
ini/presets/lcd-matrix.ini
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@ -10,7 +10,9 @@ shadow_mask_usize 0.5
shadow_mask_vsize 0.5
shadow_mask_uoffset 0.0
shadow_mask_voffset 0.0
curvature 0.0
distortion 0.0
cubic_distortion 0.0
distort_corner 0.0
round_corner 0.0
smooth_border 0.0
reflection 0.0

4
ini/presets/lcd.ini
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@ -10,7 +10,9 @@ shadow_mask_usize 0.1875
shadow_mask_vsize 0.1875
shadow_mask_uoffset 0.0
shadow_mask_voffset 0.0
curvature 0.0
distortion 0.0
cubic_distortion 0.0
distort_corner 0.0
round_corner 0.0
smooth_border 0.0
reflection 0.0

4
ini/presets/raster.ini
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@ -10,7 +10,9 @@ shadow_mask_usize 0.1875
shadow_mask_vsize 0.25
shadow_mask_uoffset 0.0
shadow_mask_voffset 0.0
curvature 0.0
distortion 0.0
cubic_distortion 0.0
distort_corner 0.0
round_corner 0.0
smooth_border 0.0
reflection 0.0

4
ini/presets/vector-mono.ini
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@ -17,7 +17,9 @@ flicker 0.15
#
hlsl_oversampling 0
shadow_mask_alpha 0.0
curvature 0.0
distortion 0.0
cubic_distortion 0.0
distort_corner 0.0
round_corner 0.0
smooth_border 0.0
reflection 0.0

4
ini/presets/vector.ini
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@ -20,7 +20,9 @@ shadow_mask_usize 0.1875
shadow_mask_vsize 0.25
shadow_mask_uoffset 0.0
shadow_mask_voffset 0.0
curvature 0.0
distortion 0.0
cubic_distortion 0.0
distort_corner 0.0
round_corner 0.0
smooth_border 0.0
reflection 0.0

34
src/osd/modules/render/d3d/d3dhlsl.cpp
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@ -680,7 +680,9 @@ void shaders::init(d3d_base *d3dintf, running_machine *machine, renderer_d3d9 *r
options->shadow_mask_v_size = winoptions.screen_shadow_mask_v_size();
options->shadow_mask_u_offset = winoptions.screen_shadow_mask_u_offset();
options->shadow_mask_v_offset = winoptions.screen_shadow_mask_v_offset();
options->curvature = winoptions.screen_curvature();
options->distortion = winoptions.screen_distortion();
options->cubic_distortion = winoptions.screen_cubic_distortion();
options->distort_corner = winoptions.screen_distort_corner();
options->round_corner = winoptions.screen_round_corner();
options->smooth_border = winoptions.screen_smooth_border();
options->reflection = winoptions.screen_reflection();
@ -989,7 +991,9 @@ int shaders::create_resources(bool reset, std::vector<ui_menu_item>& sliders)
post_effect->add_uniform("Floor", uniform::UT_VEC3, uniform::CU_POST_FLOOR);
distortion_effect->add_uniform("VignettingAmount", uniform::UT_FLOAT, uniform::CU_POST_VIGNETTING);
distortion_effect->add_uniform("CurvatureAmount", uniform::UT_FLOAT, uniform::CU_POST_CURVATURE);
distortion_effect->add_uniform("DistortionAmount", uniform::UT_FLOAT, uniform::CU_POST_DISTORTION);
distortion_effect->add_uniform("CubicDistortionAmount", uniform::UT_FLOAT, uniform::CU_POST_CUBIC_DISTORTION);
distortion_effect->add_uniform("DistortCornerAmount", uniform::UT_FLOAT, uniform::CU_POST_DISTORT_CORNER);
distortion_effect->add_uniform("RoundCornerAmount", uniform::UT_FLOAT, uniform::CU_POST_ROUND_CORNER);
distortion_effect->add_uniform("SmoothBorderAmount", uniform::UT_FLOAT, uniform::CU_POST_SMOOTH_BORDER);
distortion_effect->add_uniform("ReflectionAmount", uniform::UT_FLOAT, uniform::CU_POST_REFLECTION);
@ -1496,7 +1500,9 @@ int shaders::distortion_pass(d3d_render_target *rt, int source_index, poly_info
// skip distortion if no influencing settings
if (options->reflection == 0 &&
options->vignetting == 0 &&
options->curvature == 0 &&
options->distortion == 0 &&
options->cubic_distortion == 0 &&
options->distort_corner == 0 &&
options->round_corner == 0 &&
options->smooth_border == 0)
{
@ -2277,7 +2283,9 @@ enum slider_option
SLIDER_SHADOW_MASK_V_SIZE,
SLIDER_SHADOW_MASK_U_OFFSET,
SLIDER_SHADOW_MASK_V_OFFSET,
SLIDER_CURVATURE,
SLIDER_DISTORTION,
SLIDER_CUBIC_DISTORTION,
SLIDER_DISTORT_CORNER,
SLIDER_ROUND_CORNER,
SLIDER_SMOOTH_BORDER,
SLIDER_REFLECTION,
@ -2352,7 +2360,9 @@ slider_desc shaders::s_sliders[] =
{ "Shadow Mask Pixel Count Y", 1, 1, 64, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_SHADOW_MASK_V_SIZE, 0.03125f, "%2.5f", {} },
{ "Shadow Mask Offset X", -100, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_SHADOW_MASK_U_OFFSET, 0.01f, "%1.2f", {} },
{ "Shadow Mask Offset Y", -100, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_SHADOW_MASK_V_OFFSET, 0.01f, "%1.2f", {} },
{ "Screen Curvature", 0, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_CURVATURE, 0.01f, "%2.2f", {} },
{ "Screen Distortion", -100, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_DISTORTION, 0.01f, "%2.2f", {} },
{ "Screen Distortion (Cubic)", -100, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_CUBIC_DISTORTION, 0.01f, "%2.2f", {} },
{ "Screen Distort Corner", 0, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_DISTORT_CORNER, 0.01f, "%1.2f", {} },
{ "Screen Round Corner", 0, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_ROUND_CORNER, 0.01f, "%1.2f", {} },
{ "Screen Smooth Border", 0, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_SMOOTH_BORDER, 0.01f, "%1.2f", {} },
{ "Screen Reflection", 0, 0, 100, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_ANY, SLIDER_REFLECTION, 0.01f, "%1.2f", {} },
@ -2421,7 +2431,9 @@ void *shaders::get_slider_option(int id, int index)
case SLIDER_SHADOW_MASK_V_SIZE: return &(options->shadow_mask_v_size);
case SLIDER_SHADOW_MASK_U_OFFSET: return &(options->shadow_mask_u_offset);
case SLIDER_SHADOW_MASK_V_OFFSET: return &(options->shadow_mask_v_offset);
case SLIDER_CURVATURE: return &(options->curvature);
case SLIDER_DISTORTION: return &(options->distortion);
case SLIDER_CUBIC_DISTORTION: return &(options->cubic_distortion);
case SLIDER_DISTORT_CORNER: return &(options->distort_corner);
case SLIDER_ROUND_CORNER: return &(options->round_corner);
case SLIDER_SMOOTH_BORDER: return &(options->smooth_border);
case SLIDER_REFLECTION: return &(options->reflection);
@ -2756,8 +2768,14 @@ void uniform::update()
case CU_POST_VIGNETTING:
m_shader->set_float("VignettingAmount", options->vignetting);
break;
case CU_POST_CURVATURE:
m_shader->set_float("CurvatureAmount", options->curvature);
case CU_POST_DISTORTION:
m_shader->set_float("DistortionAmount", options->distortion);
break;
case CU_POST_CUBIC_DISTORTION:
m_shader->set_float("CubicDistortionAmount", options->cubic_distortion);
break;
case CU_POST_DISTORT_CORNER:
m_shader->set_float("DistortCornerAmount", options->distort_corner);
break;
case CU_POST_ROUND_CORNER:
m_shader->set_float("RoundCornerAmount", options->round_corner);

8
src/osd/modules/render/d3d/d3dhlsl.h
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@ -81,7 +81,9 @@ public:
CU_PHOSPHOR_IGNORE,
CU_POST_VIGNETTING,
CU_POST_CURVATURE,
CU_POST_DISTORTION,
CU_POST_CUBIC_DISTORTION,
CU_POST_DISTORT_CORNER,
CU_POST_ROUND_CORNER,
CU_POST_SMOOTH_BORDER,
CU_POST_REFLECTION,
@ -197,7 +199,9 @@ struct hlsl_options
float shadow_mask_v_size;
float shadow_mask_u_offset;
float shadow_mask_v_offset;
float curvature;
float distortion;
float cubic_distortion;
float distort_corner;
float round_corner;
float smooth_border;
float reflection;

4
src/osd/windows/winmain.cpp
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@ -170,7 +170,9 @@ const options_entry windows_options::s_option_entries[] =
{ WINOPTION_SHADOW_MASK_VSIZE";fs_shadwv(0.0-1.0)", "0.25", OPTION_FLOAT, "shadow mask texture height, in U/V dimensions" },
{ WINOPTION_SHADOW_MASK_UOFFSET";fs_shadwou(-1.0-1.0)", "0.0", OPTION_FLOAT, "shadow mask texture offset, in U direction" },
{ WINOPTION_SHADOW_MASK_VOFFSET";fs_shadwov(-1.0-1.0)", "0.0", OPTION_FLOAT, "shadow mask texture offset, in V direction" },
{ WINOPTION_CURVATURE";fs_curv(0.0-1.0)", "0.0", OPTION_FLOAT, "screen curvature amount" },
{ WINOPTION_DISTORTION";fs_dist(-1.0-1.0)", "0.0", OPTION_FLOAT, "screen distortion amount" },
{ WINOPTION_CUBIC_DISTORTION";fs_cubedist(-1.0-1.0)", "0.0", OPTION_FLOAT, "screen cubic distortion amount" },
{ WINOPTION_DISTORT_CORNER";fs_distc(0.0-1.0)", "0.0", OPTION_FLOAT, "screen distort corner amount" },
{ WINOPTION_ROUND_CORNER";fs_rndc(0.0-1.0)", "0.0", OPTION_FLOAT, "screen round corner amount" },
{ WINOPTION_SMOOTH_BORDER";fs_smob(0.0-1.0)", "0.0", OPTION_FLOAT, "screen smooth border amount" },
{ WINOPTION_REFLECTION";fs_ref(0.0-1.0)", "0.0", OPTION_FLOAT, "screen reflection amount" },

8
src/osd/windows/winmain.h
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@ -42,7 +42,9 @@
#define WINOPTION_SHADOW_MASK_UOFFSET "shadow_mask_uoffset"
#define WINOPTION_SHADOW_MASK_VOFFSET "shadow_mask_voffset"
#define WINOPTION_REFLECTION "reflection"
#define WINOPTION_CURVATURE "curvature"
#define WINOPTION_DISTORTION "distortion"
#define WINOPTION_CUBIC_DISTORTION "cubic_distortion"
#define WINOPTION_DISTORT_CORNER "distort_corner"
#define WINOPTION_ROUND_CORNER "round_corner"
#define WINOPTION_SMOOTH_BORDER "smooth_border"
#define WINOPTION_VIGNETTING "vignetting"
@ -149,7 +151,9 @@ public:
float screen_scanline_jitter() const { return float_value(WINOPTION_SCANLINE_JITTER); }
float screen_hum_bar_alpha() const { return float_value(WINOPTION_HUM_BAR_ALPHA); }
float screen_reflection() const { return float_value(WINOPTION_REFLECTION); }
float screen_curvature() const { return float_value(WINOPTION_CURVATURE); }
float screen_distortion() const { return float_value(WINOPTION_DISTORTION); }
float screen_cubic_distortion() const { return float_value(WINOPTION_CUBIC_DISTORTION); }
float screen_distort_corner() const { return float_value(WINOPTION_DISTORT_CORNER); }
float screen_round_corner() const { return float_value(WINOPTION_ROUND_CORNER); }
float screen_smooth_border() const { return float_value(WINOPTION_SMOOTH_BORDER); }
float screen_vignetting() const { return float_value(WINOPTION_VIGNETTING); }