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Reorganize point light GPU program a bit.

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git-svn-id: https://svn.eduke32.com/eduke32@1243 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
plagman 2009-03-12 21:20:01 +00:00
parent 8bdb217ca1
commit 62d3116325
1 changed files with 37 additions and 24 deletions
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61
polymer/eduke32/build/src/polymer.c
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@ -244,47 +244,60 @@ _prprogrambit prprogrambits[PR_BIT_COUNT] = {
1 << PR_BIT_POINT_LIGHT,
// vert_def
"varying vec3 vertexNormal;\n"
"varying vec3 vertexPos;\n"
"varying vec3 eyeVector;\n"
"varying vec3 lightVector;\n"
"\n",
// vert_prog
" vec3 vertexPos;\n"
"\n"
" vertexNormal = normalize(gl_NormalMatrix * curNormal);\n"
" vertexPos = vec3(gl_ModelViewMatrix * curVertex);\n"
" eyeVector = -vertexPos;\n"
" lightVector = gl_LightSource[0].ambient.rgb - vertexPos;\n"
"\n",
// frag_def
"varying vec3 vertexNormal;\n"
"varying vec3 vertexPos;\n"
"varying vec3 eyeVector;\n"
"varying vec3 lightVector;\n"
"\n",
// frag_prog
" vec3 fragmentNormal;\n"
" vec3 lightPos;\n"
" vec3 lightDiffuse;\n"
" vec2 lightRange;\n"
" vec3 lightVector;\n"
" float dotNormalLightDir;\n"
" float lightAttenuation;\n"
" float pointLightDistance;\n"
" float lightAttenuation;\n"
" vec3 N, L, E, R;\n"
" vec3 lightDiffuse;\n"
" float lightSpecular;\n"
" float NdotL;\n"
"\n"
" fragmentNormal = normalize(vertexNormal);\n"
" L = normalize(lightVector);\n"
"\n"
" lightPos = gl_LightSource[0].ambient.rgb;\n"
" lightDiffuse = gl_LightSource[0].diffuse.rgb;\n"
" pointLightDistance = length(lightVector);\n"
" lightRange.x = gl_LightSource[0].constantAttenuation;\n"
" lightRange.y = gl_LightSource[0].linearAttenuation;\n"
"\n"
" lightVector = lightPos - vertexPos;\n"
" pointLightDistance = length(lightVector);\n"
" dotNormalLightDir = max(dot(fragmentNormal, normalize(lightVector)), 0.0);\n"
" if (pointLightDistance < lightRange.y)\n"
" {\n"
" if (pointLightDistance < lightRange.x)\n"
" lightAttenuation = 1.0;\n"
" else {\n"
" lightAttenuation = 1.0 - (pointLightDistance - lightRange.x) /\n"
" (lightRange.y - lightRange.x);\n"
" if (pointLightDistance > lightRange.y)\n"
" lightAttenuation = 0.0;\n"
" else if (pointLightDistance < lightRange.x)\n"
" lightAttenuation = 1.0;\n"
" else\n"
" lightAttenuation = 1.0 - (pointLightDistance - lightRange.x) /\n"
" (lightRange.y - lightRange.x);\n"
"\n"
" if (lightAttenuation > 0.0) {\n"
" N = normalize(vertexNormal);\n"
" NdotL = dot(N, L);\n"
"\n"
" if (NdotL > 0.0) {\n"
" E = normalize(eyeVector);\n"
" R = reflect(-L, N);\n"
"\n"
" lightDiffuse = diffuseTexel.a * gl_Color.a * diffuseTexel.rgb *\n"
" gl_LightSource[0].diffuse.rgb * lightAttenuation;\n"
" result += vec4(lightDiffuse * NdotL, 0.0);\n"
"\n"
" lightSpecular = pow( max(dot(R, E), 0.0), 60.0) * 10.0;\n"
" result += vec4(lightDiffuse * lightSpecular, 0.0);\n"
" }\n"
" result += diffuseTexel.a * gl_Color.a * diffuseTexel * vec4(lightAttenuation * dotNormalLightDir * lightDiffuse, 0.0);\n"
" float specular = pow( max(dot(reflect(-normalize(lightVector), fragmentNormal), normalize(-vertexPos)), 0.0), 60.0);\n"
" result += diffuseTexel.a * gl_Color.a * diffuseTexel * vec4(lightAttenuation * specular * lightDiffuse * 10, 0.0);\n"
" } //else { result = vec4(0.0, 1.0, 0.0, 1.0); }\n"
"\n",
},