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Sergio
2025-11-23 11:44:31 +01:00
commit 6ada29eaf8
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157
data/shaders/crtpi_fragment.glsl Normal file
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#version 330 core
// Configuración
#define SCANLINES
#define MULTISAMPLE
#define GAMMA
//#define FAKE_GAMMA
//#define CURVATURE
//#define SHARPER
#define MASK_TYPE 2
#define CURVATURE_X 0.05
#define CURVATURE_Y 0.1
#define MASK_BRIGHTNESS 0.80
#define SCANLINE_WEIGHT 6.0
#define SCANLINE_GAP_BRIGHTNESS 0.12
#define BLOOM_FACTOR 3.5
#define INPUT_GAMMA 2.4
#define OUTPUT_GAMMA 2.2
// Inputs desde vertex shader
in vec2 vTexCoord;
in float vFilterWidth;
#if defined(CURVATURE)
in vec2 vScreenScale;
#endif
// Output
out vec4 FragColor;
// Uniforms
uniform sampler2D Texture;
uniform vec2 TextureSize;
#if defined(CURVATURE)
vec2 Distort(vec2 coord)
{
vec2 CURVATURE_DISTORTION = vec2(CURVATURE_X, CURVATURE_Y);
vec2 barrelScale = 1.0 - (0.23 * CURVATURE_DISTORTION);
coord *= vScreenScale;
coord -= vec2(0.5);
float rsq = coord.x * coord.x + coord.y * coord.y;
coord += coord * (CURVATURE_DISTORTION * rsq);
coord *= barrelScale;
if (abs(coord.x) >= 0.5 || abs(coord.y) >= 0.5)
coord = vec2(-1.0);
else
{
coord += vec2(0.5);
coord /= vScreenScale;
}
return coord;
}
#endif
float CalcScanLineWeight(float dist)
{
return max(1.0 - dist * dist * SCANLINE_WEIGHT, SCANLINE_GAP_BRIGHTNESS);
}
float CalcScanLine(float dy)
{
float scanLineWeight = CalcScanLineWeight(dy);
#if defined(MULTISAMPLE)
scanLineWeight += CalcScanLineWeight(dy - vFilterWidth);
scanLineWeight += CalcScanLineWeight(dy + vFilterWidth);
scanLineWeight *= 0.3333333;
#endif
return scanLineWeight;
}
void main()
{
#if defined(CURVATURE)
vec2 texcoord = Distort(vTexCoord);
if (texcoord.x < 0.0) {
FragColor = vec4(0.0);
return;
}
#else
vec2 texcoord = vTexCoord;
#endif
vec2 texcoordInPixels = texcoord * TextureSize;
#if defined(SHARPER)
vec2 tempCoord = floor(texcoordInPixels) + 0.5;
vec2 coord = tempCoord / TextureSize;
vec2 deltas = texcoordInPixels - tempCoord;
float scanLineWeight = CalcScanLine(deltas.y);
vec2 signs = sign(deltas);
deltas.x *= 2.0;
deltas = deltas * deltas;
deltas.y = deltas.y * deltas.y;
deltas.x *= 0.5;
deltas.y *= 8.0;
deltas /= TextureSize;
deltas *= signs;
vec2 tc = coord + deltas;
#else
float tempY = floor(texcoordInPixels.y) + 0.5;
float yCoord = tempY / TextureSize.y;
float dy = texcoordInPixels.y - tempY;
float scanLineWeight = CalcScanLine(dy);
float signY = sign(dy);
dy = dy * dy;
dy = dy * dy;
dy *= 8.0;
dy /= TextureSize.y;
dy *= signY;
vec2 tc = vec2(texcoord.x, yCoord + dy);
#endif
vec3 colour = texture(Texture, tc).rgb;
#if defined(SCANLINES)
#if defined(GAMMA)
#if defined(FAKE_GAMMA)
colour = colour * colour;
#else
colour = pow(colour, vec3(INPUT_GAMMA));
#endif
#endif
scanLineWeight *= BLOOM_FACTOR;
colour *= scanLineWeight;
#if defined(GAMMA)
#if defined(FAKE_GAMMA)
colour = sqrt(colour);
#else
colour = pow(colour, vec3(1.0 / OUTPUT_GAMMA));
#endif
#endif
#endif
#if MASK_TYPE == 0
FragColor = vec4(colour, 1.0);
#elif MASK_TYPE == 1
float whichMask = fract(gl_FragCoord.x * 0.5);
vec3 mask;
if (whichMask < 0.5)
mask = vec3(MASK_BRIGHTNESS, 1.0, MASK_BRIGHTNESS);
else
mask = vec3(1.0, MASK_BRIGHTNESS, 1.0);
FragColor = vec4(colour * mask, 1.0);
#elif MASK_TYPE == 2
float whichMask = fract(gl_FragCoord.x * 0.3333333);
vec3 mask = vec3(MASK_BRIGHTNESS, MASK_BRIGHTNESS, MASK_BRIGHTNESS);
if (whichMask < 0.3333333)
mask.x = 1.0;
else if (whichMask < 0.6666666)
mask.y = 1.0;
else
mask.z = 1.0;
FragColor = vec4(colour * mask, 1.0);
#endif
}

160
data/shaders/crtpi_fragment_es.glsl Normal file
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#version 300 es
// OpenGL ES 3.0 - Compatible con Raspberry Pi 5
precision highp float;
// Configuración
#define SCANLINES
#define MULTISAMPLE
#define GAMMA
//#define FAKE_GAMMA
//#define CURVATURE
//#define SHARPER
#define MASK_TYPE 2
#define CURVATURE_X 0.05
#define CURVATURE_Y 0.1
#define MASK_BRIGHTNESS 0.80
#define SCANLINE_WEIGHT 6.0
#define SCANLINE_GAP_BRIGHTNESS 0.12
#define BLOOM_FACTOR 3.5
#define INPUT_GAMMA 2.4
#define OUTPUT_GAMMA 2.2
// Inputs desde vertex shader
in vec2 vTexCoord;
in float vFilterWidth;
#if defined(CURVATURE)
in vec2 vScreenScale;
#endif
// Output
out vec4 FragColor;
// Uniforms
uniform sampler2D Texture;
uniform vec2 TextureSize;
#if defined(CURVATURE)
vec2 Distort(vec2 coord)
{
vec2 CURVATURE_DISTORTION = vec2(CURVATURE_X, CURVATURE_Y);
vec2 barrelScale = vec2(1.0) - (0.23 * CURVATURE_DISTORTION);
coord *= vScreenScale;
coord -= vec2(0.5);
float rsq = coord.x * coord.x + coord.y * coord.y;
coord += coord * (CURVATURE_DISTORTION * rsq);
coord *= barrelScale;
if (abs(coord.x) >= 0.5 || abs(coord.y) >= 0.5)
coord = vec2(-1.0);
else
{
coord += vec2(0.5);
coord /= vScreenScale;
}
return coord;
}
#endif
float CalcScanLineWeight(float dist)
{
return max(1.0 - dist * dist * SCANLINE_WEIGHT, SCANLINE_GAP_BRIGHTNESS);
}
float CalcScanLine(float dy)
{
float scanLineWeight = CalcScanLineWeight(dy);
#if defined(MULTISAMPLE)
scanLineWeight += CalcScanLineWeight(dy - vFilterWidth);
scanLineWeight += CalcScanLineWeight(dy + vFilterWidth);
scanLineWeight *= 0.3333333;
#endif
return scanLineWeight;
}
void main()
{
#if defined(CURVATURE)
vec2 texcoord = Distort(vTexCoord);
if (texcoord.x < 0.0) {
FragColor = vec4(0.0);
return;
}
#else
vec2 texcoord = vTexCoord;
#endif
vec2 texcoordInPixels = texcoord * TextureSize;
#if defined(SHARPER)
vec2 tempCoord = floor(texcoordInPixels) + vec2(0.5);
vec2 coord = tempCoord / TextureSize;
vec2 deltas = texcoordInPixels - tempCoord;
float scanLineWeight = CalcScanLine(deltas.y);
vec2 signs = sign(deltas);
deltas.x *= 2.0;
deltas = deltas * deltas;
deltas.y = deltas.y * deltas.y;
deltas.x *= 0.5;
deltas.y *= 8.0;
deltas /= TextureSize;
deltas *= signs;
vec2 tc = coord + deltas;
#else
float tempY = floor(texcoordInPixels.y) + 0.5;
float yCoord = tempY / TextureSize.y;
float dy = texcoordInPixels.y - tempY;
float scanLineWeight = CalcScanLine(dy);
float signY = sign(dy);
dy = dy * dy;
dy = dy * dy;
dy *= 8.0;
dy /= TextureSize.y;
dy *= signY;
vec2 tc = vec2(texcoord.x, yCoord + dy);
#endif
vec3 colour = texture(Texture, tc).rgb;
#if defined(SCANLINES)
#if defined(GAMMA)
#if defined(FAKE_GAMMA)
colour = colour * colour;
#else
colour = pow(colour, vec3(INPUT_GAMMA));
#endif
#endif
scanLineWeight *= BLOOM_FACTOR;
colour *= scanLineWeight;
#if defined(GAMMA)
#if defined(FAKE_GAMMA)
colour = sqrt(colour);
#else
colour = pow(colour, vec3(1.0 / OUTPUT_GAMMA));
#endif
#endif
#endif
#if MASK_TYPE == 0
FragColor = vec4(colour, 1.0);
#elif MASK_TYPE == 1
float whichMask = fract(gl_FragCoord.x * 0.5);
vec3 mask;
if (whichMask < 0.5)
mask = vec3(MASK_BRIGHTNESS, 1.0, MASK_BRIGHTNESS);
else
mask = vec3(1.0, MASK_BRIGHTNESS, 1.0);
FragColor = vec4(colour * mask, 1.0);
#elif MASK_TYPE == 2
float whichMask = fract(gl_FragCoord.x * 0.3333333);
vec3 mask = vec3(MASK_BRIGHTNESS, MASK_BRIGHTNESS, MASK_BRIGHTNESS);
if (whichMask < 0.3333333)
mask.x = 1.0;
else if (whichMask < 0.6666666)
mask.y = 1.0;
else
mask.z = 1.0;
FragColor = vec4(colour * mask, 1.0);
#endif
}

48
data/shaders/crtpi_vertex.glsl Normal file
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#version 330 core
// Configuración
#define SCANLINES
#define MULTISAMPLE
#define GAMMA
//#define FAKE_GAMMA
//#define CURVATURE
//#define SHARPER
#define MASK_TYPE 2
#define CURVATURE_X 0.05
#define CURVATURE_Y 0.1
#define MASK_BRIGHTNESS 0.80
#define SCANLINE_WEIGHT 6.0
#define SCANLINE_GAP_BRIGHTNESS 0.12
#define BLOOM_FACTOR 3.5
#define INPUT_GAMMA 2.4
#define OUTPUT_GAMMA 2.2
// Inputs (desde VAO)
layout(location = 0) in vec2 aPosition;
layout(location = 1) in vec2 aTexCoord;
// Outputs al fragment shader
out vec2 vTexCoord;
out float vFilterWidth;
#if defined(CURVATURE)
out vec2 vScreenScale;
#endif
// Uniforms
uniform vec2 TextureSize;
void main()
{
#if defined(CURVATURE)
vScreenScale = vec2(1.0, 1.0);
#endif
// Calcula filterWidth dinámicamente basándose en la altura de la textura
vFilterWidth = (768.0 / TextureSize.y) / 3.0;
// Pasar coordenadas de textura (invertir Y para SDL)
vTexCoord = vec2(aTexCoord.x, 1.0 - aTexCoord.y) * 1.0001;
// Posición del vértice (ya en espacio de clip [-1, 1])
gl_Position = vec4(aPosition, 0.0, 1.0);
}

51
data/shaders/crtpi_vertex_es.glsl Normal file
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#version 300 es
// OpenGL ES 3.0 - Compatible con Raspberry Pi 5
precision highp float;
// Configuración
#define SCANLINES
#define MULTISAMPLE
#define GAMMA
//#define FAKE_GAMMA
//#define CURVATURE
//#define SHARPER
#define MASK_TYPE 2
#define CURVATURE_X 0.05
#define CURVATURE_Y 0.1
#define MASK_BRIGHTNESS 0.80
#define SCANLINE_WEIGHT 6.0
#define SCANLINE_GAP_BRIGHTNESS 0.12
#define BLOOM_FACTOR 3.5
#define INPUT_GAMMA 2.4
#define OUTPUT_GAMMA 2.2
// Inputs (desde VAO)
layout(location = 0) in vec2 aPosition;
layout(location = 1) in vec2 aTexCoord;
// Outputs al fragment shader
out vec2 vTexCoord;
out float vFilterWidth;
#if defined(CURVATURE)
out vec2 vScreenScale;
#endif
// Uniforms
uniform vec2 TextureSize;
void main()
{
#if defined(CURVATURE)
vScreenScale = vec2(1.0, 1.0);
#endif
// Calcula filterWidth dinámicamente basándose en la altura de la textura
vFilterWidth = (768.0 / TextureSize.y) / 3.0;
// Pasar coordenadas de textura (invertir Y para SDL)
vTexCoord = vec2(aTexCoord.x, 1.0 - aTexCoord.y) * 1.0001;
// Posición del vértice (ya en espacio de clip [-1, 1])
gl_Position = vec4(aPosition, 0.0, 1.0);
}