Kung Fu Chaos

Fullscreen blit shader

 v0.xy {
   {0,0}
   {0,1}
   {1,1}
   {1,0}
 }
 
 surfaceSize = {640,480}
 clipRange = {0,16777215}
 
 c[58] = { 320, -240, 16777215, 0 }
 c[59] = { 320.53125, 240.53125, 0, 0}
 
 c[100] = {  640,    480, 0, 5.06639553e-05}
 c[101] = {    0,      0, 0, 1}
 c[102] = {1/320, -1/240, 1, 1}
 c[103] = {    1,     -1, 0, 0}
 c[104] = {    0,      0, 0, 0}
 c[105] = { 320, -240, 16777215, 0 }
 c[106] = { 320.53125, 240.53125, 0, 0}
 
 
 oD0 = v1
 
 R2.x = 0.0;
 R9 = {1/320, -1/240, 1, 1}
 
 R5.xy = R2.x * { -1, +1 }  // -> R5.xy = 0.0 .. FIXME: This makes no sense? R2.x was just set to zero?! [from C104.x !!]
 
   /* Slot 3: 0x00000000 0x006CC0AA 0x0C36146C 0x98300FF8 */
   ADD(R3,x, c[102].z, -R2);  // -> R3.x = C[102].z = 1.0
 
   /* Slot 4: 0x00000000 0x008CC000 0x242A1800 0xDC400FF8 */
   MAD(R4,xy, R2.x, c[102].xy, R3.x); // -> R4.xy = R3.xx = {1,1}
 
   /* Slot 5: 0x00000000 0x008D2000 0x242A1800 0xDC600FF8 */
   MAD(R6,xy, R2.x, c[105].xy, R3.x); // -> R6.xy = R3.xx = {1,1}
 
   /* Slot 6: 0x00000000 0x004D4000 0x242A186C 0x2C700FF8 */
   MUL(R7,xy, R2.x, c[106].xy); // -> R7.xy = 0.0
 
   /* Slot 7: 0x00000000 0x0080041B 0x0836886D 0x5C800FF8 */
   MAD(R8,xy, v2, R4, R5); // -> R8 = v2 * R4 = v2
 
   oT0.xy = R8 * R6 + R7 // -> v2
   oT1.xy = R8 * R6 + R7 // -> v2
 
   /* Slot 8: 0x00000000 0x004CA01A 0x0C37286C 0x2FA00FF8 */
   MUL(R10,xyzw, c[101].xyz, R9);
 
   /* Slot 11: 0x00000000 0x006CE01B 0xA436146C 0x3070F800 */
   ADD(oPos,xyzw, R10, -c[103]);
 
   /* Slot 12: 0x00000000 0x004C8015 0x942A186C 0x2CB00FF8 */
   MUL(R11,xy, R9.xy, c[100].xy);
 
   /* Slot 13: 0x00000000 0x00800015 0x082B6857 0x1070C800 */
   MAD(oPos,xy, v0.xy, R11.xy, R12.xy);
 
 
 SET FOG:
 
 
   /* Slot 14: 0x00000000 0x004C80FF 0x0DFF886C 0x20708828 */
   MUL(oFog,x, c[100].w, R12.w);
 
 
 
 DO VIEWPORT TRANSFORM:
 
 
   /* Slot 15: 0x00000000 0x0047401B 0xC436186C 0x2070C800 */
   MUL(oPos,xy, R12, c[58]);
 
   /* Slot 16: 0x00000000 0x0067601B 0xC436106C 0x3070C801 */
   ADD(oPos,xy, R12, c[59]);
 
 
 
 SPACE CONVERSION [XQEMU only]:
 
 
   if (oPos.w == 0.0 || isinf(oPos.w)) {
     vtx.inv_w = 1.0;
   } else {
     vtx.inv_w = 1.0 / oPos.w;
   }
   oPos.x = 2.0 * (oPos.x - surfaceSize.x * 0.5) / surfaceSize.x;
   oPos.y = -2.0 * (oPos.y - surfaceSize.y * 0.5) / surfaceSize.y;
   if (clipRange.y != clipRange.x) {
     oPos.z = (oPos.z - 0.5 * (clipRange.x + clipRange.y)) / (0.5 * (clipRange.y - clipRange.x));
   }
   if (oPos.w <= 0.0) {
     oPos.xyz *= oPos.w;
   } else {
     oPos.w = 1.0;
   }
 
 
 /* Make the world a happy place! */
 #if 1
 
 oFog.xyzw = vec4(1.0);
 
 oPos.xy = v0.xy;
 oPos.y *= -1.0;
 oPos.z = 0.5;
 oPos.w = 1.0;
 vtx.inv_w = 1.0;
 
 #endif