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authorKenneth Russel <kbrussel@alum.mit.edu>2009-06-15 23:05:16 +0000
committerKenneth Russel <kbrussel@alum.mit.edu>2009-06-15 23:05:16 +0000
commit935d2596c13371bb745d921dbcb9f05b0c11a010 (patch)
tree7fcc310618ae5a90edc734dc821e75afc0f080aa /src/demos/hdr/shaders/cg/hdr.cg
parente2332d2f2908e68f1e77454c73f329f8ff2b400d (diff)
Deleted obsolete source code in preparation for copying JOGL_2_SANDBOX
on to trunk git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@351 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4
Diffstat (limited to 'src/demos/hdr/shaders/cg/hdr.cg')
-rwxr-xr-xsrc/demos/hdr/shaders/cg/hdr.cg130
1 files changed, 0 insertions, 130 deletions
diff --git a/src/demos/hdr/shaders/cg/hdr.cg b/src/demos/hdr/shaders/cg/hdr.cg
deleted file mode 100755
index 3a0cafd..0000000
--- a/src/demos/hdr/shaders/cg/hdr.cg
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- Cg functions to decode and filter textures in Radiance (RGBE) high dynamic range format
- sgg 2/15/02
-
- http://www.graphics.cornell.edu/~bjw/rgbe.html
-*/
-
-#if 0
-typedef float4 vec4;
-typedef float3 vec3;
-typedef float2 vec2;
-typedef float real;
-#define texRECT f4texRECT
-#define texCUBE f4texCUBE
-#else
-typedef half4 vec4;
-typedef half3 vec3;
-typedef half2 vec2;
-typedef half real;
-#define texRECT h4texRECT
-#define texCUBE h4texCUBE
-#endif
-
-struct fragin
-{
- float4 wpos : WPOS;
- float3 tex0 : TEXCOORD0;
- float3 tex1 : TEXCOORD1;
- float4 col0 : COLOR0;
-};
-
-// Lookup in RGBE-encoded rectangle texture
-vec3 texRECT_RGBE(uniform samplerRECT tex, float2 t)
-{
- vec4 rgbe = texRECT(tex, t);
- real e = (rgbe[3] * 255) - 128;
- return rgbe.xyz * exp2(e);
-}
-
-// Lookup in RGBE-encoded cube map texture
-vec3 texCUBE_RGBE(uniform samplerCUBE tex, float3 t)
-{
- vec4 rgbe = texCUBE(tex, t);
- real e = (rgbe[3] * 255) - 128;
- return rgbe.xyz * exp2(e);
-}
-
-// Lookup in RGBE-encoded rectangle texture with filtering
-vec3 texRECT_RGBE_Bilinear(uniform samplerRECT tex, half2 t)
-{
- float2 f = frac(t);
- vec3 t0 = texRECT_RGBE(tex, t);
- vec3 t1 = texRECT_RGBE(tex, t + half2(1,0) );
- vec3 t2 = lerp(t0, t1, f[0]);
- t0 = texRECT_RGBE(tex, t + half2(0,1) );
- t1 = texRECT_RGBE(tex, t + half2(1,1) );
- t0 = lerp(t0, t1, f[0]);
- t0 = lerp(t2, t0, f[1]);
- return t0;
-}
-
-// Lookup in cubemap encoded as two HILO cube maps
-vec3 texCUBE_hilo(uniform samplerCUBE rg_tex : TEXUNIT0, uniform samplerCUBE b_tex : TEXUNIT1, float3 t)
-{
- vec3 c;
- c.xy = texCUBE(rg_tex, t).xy;
- c.z = texCUBE(b_tex, t).x;
-// c = c * c;
- return c;
-}
-
-// Lookup in rectangle texture encoded as two HILO cube maps
-vec3 texRECT_hilo(uniform samplerRECT rg_tex : TEXUNIT0, uniform samplerRECT b_tex : TEXUNIT1, float2 t)
-{
- vec3 c;
- c.xy = texRECT(rg_tex, t).xy;
- c.z = texRECT(b_tex, t).x;
- return c;
-}
-
-// bilinear lookup in float texture
-vec4 texRECT_bilinear(uniform samplerRECT tex, half2 t)
-{
- float2 f = frac(t);
- vec4 t0 = texRECT(tex, t);
- vec4 t1 = texRECT(tex, t + half2(1,0) );
- vec4 t2 = lerp(t0, t1, f[0]);
- t0 = texRECT(tex, t + half2(0,1) );
- t1 = texRECT(tex, t + half2(1,1) );
- t0 = lerp(t0, t1, f[0]);
- t0 = lerp(t2, t0, f[1]);
- return t0;
-}
-
-// applying vignetting based on window coordinates
-void vignette(inout float3 c, float4 wpos, const float2 win_bias, const float2 win_scale)
-{
- // convert window coord to [-1, 1] range
- wpos.xy = (wpos.xy - win_bias) * win_scale;
- // calculate distance from origin
- float r = length(wpos.xy);
- r = 1.0 - smoothstep(0.8, 1.5, r);
- c = c * r;
-}
-
-// refraction function from Renderman spec
-// I = incident direction, N = normal, eta = relative index of refraction
-half3 my_refract(half3 I, half3 N, half eta)
-{
- half IdotN = dot(I,N);
- half k = 1 - eta*eta*(1 - IdotN*IdotN);
-
- return eta*I - (eta*IdotN + sqrt(k))*N;
-}
-
-// fresnel approximation
-half my_fresnel(half3 I, half3 N, half power, half scale, half bias)
-{
- return bias + (pow(max(0.0, 1.0 - dot(I, N)), power) * scale);
-}
-
-// transform a direction vector by a 4x4 matrix
-float3 transform_dir(float4x4 m, float3 v)
-{
- float3 o;
- o.x = dot(v, m._11_12_13);
- o.y = dot(v, m._21_22_23);
- o.z = dot(v, m._31_32_33);
- return o;
-}