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add powervr2 shader and preset

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hunterk 2020-01-22 15:21:27 -06:00
parent 4ddd22c9a0
commit 7354c77fa6
1 changed files with 28 additions and 33 deletions
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61
gpu/shaders/powervr2.glsl
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@ -10,6 +10,7 @@
*/
#define HW 1.00
#define round(c) floor(c + 0.5)
#if defined(VERTEX)
@ -82,8 +83,8 @@ COMPAT_VARYING vec4 TEX0;
#define Source Texture
#define vTexCoord TEX0.xy
#define texture(c, d) COMPAT_TEXTURE(c, d)
#define FixedSize vec2(640, 480)
#define SourceSize vec4(FixedSize, 1.0 / FixedSize) //either TextureSize or InputSize
//#define FixedSize vec2(640., 480.)
#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
#define outsize vec4(TextureSize, 1.0 / TextureSize)
@ -94,20 +95,15 @@ float dithertable[16] = {
6.,10.,7.,11.
};
#pragma parameter INTERLACED "PVR - Interlace smoothing" 1.00 0.00 1.00 1.0
#pragma parameter VGASIGNAL "PVR - VGA signal loss" 0.00 0.00 1.00 1.0
#pragma parameter LUMBOOST "PVR - Luminance gain" 0.35 0.00 1.00 0.01
#ifdef PARAMETER_UNIFORM
uniform float INTERLACED;
uniform float VGASIGNAL;
uniform float LUMBOOST;
#else
#define INTERLACED 1.
#define VGASIGNAL 0.
#define LUMBOOST 0.
#endif
#define LUM_R (76.0/255.0)
@ -120,36 +116,35 @@ void main()
vec2 texcoord = vTexCoord;
vec2 texcoord2 = vTexCoord;
texcoord2.x *= TextureSize.x;
texcoord2.y *= TextureSize.y;
texcoord2.x *= SourceSize.x;
texcoord2.y *= SourceSize.y;
vec4 color = COMPAT_TEXTURE(Source, texcoord);
float fc = mod(float(FrameCount), 2.0);
// Blend vertically for composite mode
if (bool(INTERLACED))
if (bool(INTERLACED) && InputSize.y > 400.)
{
int taps = int(8);
float tap = 0.62/taps;
int taps = int(3);
float tap = 2.0/float(taps);
vec2 texcoord4 = vTexCoord;
texcoord4.x = texcoord4.x;
texcoord4.y = texcoord4.y + ((tap*(taps/2.))/480.0);
texcoord4.y = texcoord4.y + ((tap*float(taps/2))/480.0);
vec4 blur1 = COMPAT_TEXTURE(Source, texcoord4);
int bl;
vec4 ble;
ble.r = 0.00;
ble.g = 0.00;
ble.b = 0.00;
for (bl=0;bl<taps;bl++)
{
texcoord4.y += (tap / 480.0);
ble.rgb += COMPAT_TEXTURE(Source, texcoord4).rgb / taps;
texcoord4.y += (tap / 480.0);
ble.rgb += COMPAT_TEXTURE(Source, texcoord4).rgb / float(taps);
}
color.rgb = color.rgb * 0.25 + ( ble.rgb * 0.75);
}
// Some games use a luminance boost (JSR etc)
if (bool(LUMBOOST))
{
color.rgb += (((color.r * LUM_R) + (color.g * LUM_G) + (color.b * LUM_B)) * LUMBOOST);
color.rgb = ( ble.rgb );
}
// Dither. ALWAYS do this for 16bpp
@ -158,7 +153,7 @@ void main()
float ohyes;
vec4 how;
for (yeh=ditdex; yeh<(ditdex+16); yeh++) ohyes = ((((dithertable[yeh-15]) - 1) * 0.1));
for (yeh=ditdex; yeh<(ditdex+16); yeh++) ohyes = ((((dithertable[yeh-15]) - 1.) * 0.1));
color.rb -= (ohyes / 128.);
color.g -= (ohyes / 128.);
{
@ -175,25 +170,25 @@ void main()
// There's a bit of a precision drop involved in the RGB565ening for VGA
// I'm not sure why that is. it's exhibited on PVR1 and PVR3 hardware too
if (INTERLACED < 0.5)
if (bool(INTERLACED) && InputSize.y > 400.)
{
if (mod(color.r*32, 2.0)>0) color.r -= 0.023;
if (mod(color.g*64, 2.0)>0) color.g -= 0.01;
if (mod(color.b*32, 2.0)>0) color.b -= 0.023;
if (mod(color.r*32., 2.0)>0.) color.r -= 0.023;
if (mod(color.g*64., 2.0)>0.) color.g -= 0.01;
if (mod(color.b*32., 2.0)>0.) color.b -= 0.023;
}
// RGB565 clamp
color.rb = floor(color.rb * 32. + 0.5)/32.;
color.g = floor(color.g * 64. + 0.5)/64.;
color.rb = round(color.rb * 32.)/32.;
color.g = round(color.g * 64.)/64.;
// VGA Signal Loss, which probably is very wrong but i tried my best
if (bool(VGASIGNAL))
{
int taps = 32;
float tap = 12.0/taps;
float tap = 12.0/float(taps);
vec2 texcoord4 = vTexCoord;
texcoord4.x = texcoord4.x + (2.0/640.0);
texcoord4.y = texcoord4.y;
@ -202,11 +197,11 @@ void main()
vec4 ble;
for (bl=0;bl<taps;bl++)
{
float e = 1;
float e = 1.;
if (bl>=3)
e=0.35;
texcoord4.x -= (tap / 640);
ble.rgb += (COMPAT_TEXTURE(Source, texcoord4).rgb * e) / (taps/(bl+1));
texcoord4.x -= (tap / 640.);
ble.rgb += (COMPAT_TEXTURE(Source, texcoord4).rgb * e) / float(taps/(bl+1));
}
color.rgb += ble.rgb * 0.015;