mirror of
https://bitbucket.org/theswgsource/clientdata-1.2.git
synced 2026-07-14 00:03:40 -04:00
147 lines
4.3 KiB
PHP
Executable File
147 lines
4.3 KiB
PHP
Executable File
// ======================================================================
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//
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// inputs:
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//
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// r7 = cell/ambient lighting
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// r9.xyz = vertex in world space
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// r10.xyz = normal in world space (re-normalized)
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//
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// outputs:
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//
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// oD0 = diffuse light
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//
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// ======================================================================
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// ----------------------------------------------------------------------
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// calculate diffuse/specular parallel light 1
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// calculate diffuse and specular lighting
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dp3 r0, r10, cLightData_parallelSpecular_0_direction
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add r7, cExtLtData_parallelSpec_0_tangentColor, r7
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max r1, r0, c0_0
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mad r7, cExtLtData_parallelSpec_0_tangentMinusDiffuse, -r1.y, r7
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min r1, r0, c0_0
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mad r7, cExtLtData_parallelSpec_0_tangentMinusBack, r1.y, r7
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// ----------------------------------------------------------------------
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// calculate diffuse parallel light 1
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dp3 r0, r10, cLightData_parallel_0_direction
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max r0, r0, c0_0
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mad r7, r0, cLightData_parallel_0_diffuseColor, r7
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// ----------------------------------------------------------------------
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// calculate diffuse parallel light 2
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dp3 r0, r10, cLightData_parallel_1_direction
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max r0, r0, c0_0
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mad r7, r0, cLightData_parallel_1_diffuseColor, r7
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// ----------------------------------------------------------------------
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// calculate diffuse/specular point light 1
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// calculate unit vector from vertex to light and set up for attenuation calculation
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sub r0.xyz, cLightData_pointSpecular_0_position, r9
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dp3 r1, r0, r0 // r1 = d*d, d*d, d*d, d*d
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rsq r2, r1.w // r2 = 1/d, 1/d, 1/d, 1/d
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mul r0.xyz, r0, r2
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// calculate attenuation
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dst r1, r1, r2
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dp3 r1, r1, cLightData_pointSpecular_0_attenuation
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rcp r1, r1.w
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// calculate diffuse and specular lighting
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dp3 r0, r10, r0
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max r0, r0, c0_0
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mul r0, r0, r1
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mad r7, cLightData_pointSpecular_0_diffuseColor, r0.y, r7
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// ----------------------------------------------------------------------
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// calculate diffuse point light 1
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// calculate unit vector from vertex to light and set up for attenuation calculation
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sub r0.xyz, cLightData_point_0_position, r9
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dp3 r1, r0, r0
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rsq r2, r1.w
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mul r0.xyz, r0, r2
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// calculate attenuation
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dst r1, r1, r2
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dp3 r1, r1, cLightData_point_0_attenuation
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rcp r1, r1.w
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// calculate diffuse and lighting
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dp3 r0, r10, r0
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max r0, r0, c0_0
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mul r0, r0, r1
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mad r7, cLightData_point_0_diffuseColor, r0, r7
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// ----------------------------------------------------------------------
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// calculate diffuse point light 2
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// calculate unit vector from vertex to light and set up for attenuation calculation
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sub r0.xyz, cLightData_point_1_position, r9
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dp3 r1, r0, r0
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rsq r2, r1.w
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mul r0.xyz, r0, r2
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// calculate attenuation
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dst r1, r1, r2
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dp3 r1, r1, cLightData_point_1_attenuation
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rcp r1, r1.w
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// calculate diffuse and lighting
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dp3 r0, r10, r0
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max r0, r0, c0_0
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mul r0, r0, r1
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mad r7, cLightData_point_1_diffuseColor, r0, r7
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// ----------------------------------------------------------------------
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// calculate diffuse point light 3
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// calculate unit vector from vertex to light and set up for attenuation calculation
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sub r0.xyz, cLightData_point_2_position, r9
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dp3 r1, r0, r0
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rsq r2, r1.w
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mul r0.xyz, r0, r2
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// calculate attenuation
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dst r1, r1, r2
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dp3 r1, r1, cLightData_point_2_attenuation
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rcp r1, r1.w
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// calculate diffuse and lighting
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dp3 r0, r10, r0
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max r0, r0, c0_0
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mul r0, r0, r1
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mad r7, cLightData_point_2_diffuseColor, r0, r7
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// ----------------------------------------------------------------------
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// calculate diffuse point light 4
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// calculate unit vector from vertex to light and set up for attenuation calculation
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sub r0.xyz, cLightData_point_3_position, r9
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dp3 r1, r0, r0
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rsq r2, r1.w
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mul r0.xyz, r0, r2
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// calculate attenuation
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dst r1, r1, r2
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dp3 r1, r1, cLightData_point_3_attenuation
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rcp r1, r1.w
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// calculate diffuse and lighting
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dp3 r0, r10, r0
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max r0, r0, c0_0
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mul r0, r0, r1
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mad r7, cLightData_point_3_diffuseColor, r0, r7
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// ----------------------------------------------------------------------
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// store final diffuse and specular lighting colors, add in material emissive color
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add r7, r7, cMaterial_emissiveColor
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mov oD0, r7
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// ======================================================================
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