wow! I think this is one of the best tree libraries I've seen (well, free one anyway, I wont go near paid for stuff :P) can't wait to see how this develops. Good luck!
EDIT: the impostor shader is failing:
(from shader_error.txt)
-- program construction --Fragment info-------------Internal error: assembly compile error for fragment shader at offset 10250:-- error message --line 169, column 13: error: variable not valid as a source register-- internal assembly text --!!ARBfp1.0OPTION NV_fragment_program2;# cgc version 2.0.0018, build date May 16 2008 14:21:24# command line args: #vendor NVIDIA Corporation#version 2.0.1.18#profile fp40#program main#semantic texture#semantic normal_map#semantic gl_FrontMaterial : state.material.front#semantic gl_LightSource : state.light#var sampler2D texture : : texunit 1 : -1 : 1#var sampler2D normal_map : : texunit 0 : -1 : 1#var float3x3 tangent_space : $vin.TEX1 : TEX1, 3 : -1 : 1#var float3 frag_coord : $vin.TEX4 : TEX4 : -1 : 0#var float4 gl_TexCoord[0] : $vin.TEX0 : TEX0 : -1 : 1#var float4 gl_TexCoord[1] : : : -1 : 0#var float4 gl_TexCoord[2] : : : -1 : 0#var float4 gl_TexCoord[3] : : : -1 : 0#var float4 gl_TexCoord[4] : : : -1 : 0#var float4 gl_TexCoord[5] : : : -1 : 0#var float4 gl_TexCoord[6] : : : -1 : 0#var float4 gl_TexCoord[7] : : : -1 : 0#var float4 gl_FrontMaterial.emission : state.material.front.emission : : -1 : 0#var float4 gl_FrontMaterial.ambient : state.material.front.ambient : : -1 : 0#var float4 gl_FrontMaterial.diffuse : state.material.front.diffuse : : -1 : 0#var float4 gl_FrontMaterial.specular : state.material.front.specular : : -1 : 0#var float gl_FrontMaterial.shininess : state.material.front.shininess : c[0] : -1 : 0#var float4 gl_FragColor : $vout.COLOR : COL : -1 : 1#var float4 gl_LightSource[0].ambient : state.light[0].ambient : c[1] : -1 : 1#var float4 gl_LightSource[0].diffuse : state.light[0].diffuse : c[2] : -1 : 1#var float4 gl_LightSource[0].specular : state.light[0].specular : c[3] : -1 : 0#var float4 gl_LightSource[0].position : state.light[0].position : c[4] : -1 : 1#var float4 gl_LightSource[0].halfVector : state.light[0].half : : -1 : 0#var float3 gl_LightSource[0].spotDirection : state.light[0].spot.direction : : -1 : 0#var float gl_LightSource[0].spotExponent : state.light[0].attenuation.w : : -1 : 0#var float gl_LightSource[0].spotCutoff : NONE : : -1 : 0#var float gl_LightSource[0].spotCosCutoff : state.light[0].spot.direction.w : : -1 : 0#var float gl_LightSource[0].constantAttenuation : state.light[0].attenuation.x : : -1 : 0#var float gl_LightSource[0].linearAttenuation : state.light[0].attenuation.y : : -1 : 0#var float gl_LightSource[0].quadraticAttenuation : state.light[0].attenuation.z : : -1 : 0#var float4 gl_LightSource[1].ambient : state.light[1].ambient : : -1 : 0#var float4 gl_LightSource[1].diffuse : state.light[1].diffuse : : -1 : 0#var float4 gl_LightSource[1].specular : state.light[1].specular : : -1 : 0#var float4 gl_LightSource[1].position : state.light[1].position : : -1 : 0#var float4 gl_LightSource[1].halfVector : state.light[1].half : : -1 : 0#var float3 gl_LightSource[1].spotDirection : state.light[1].spot.direction : : -1 : 0#var float gl_LightSource[1].spotExponent : state.light[1].attenuation.w : : -1 : 0#var float gl_LightSource[1].spotCutoff : NONE : : -1 : 0#var float gl_LightSource[1].spotCosCutoff : state.light[1].spot.direction.w : : -1 : 0#var float gl_LightSource[1].constantAttenuation : state.light[1].attenuation.x : : -1 : 0#var float gl_LightSource[1].linearAttenuation : state.light[1].attenuation.y : : -1 : 0#var float gl_LightSource[1].quadraticAttenuation : state.light[1].attenuation.z : : -1 : 0#var float4 gl_LightSource[2].ambient : state.light[2].ambient : : -1 : 0#var float4 gl_LightSource[2].diffuse : state.light[2].diffuse : : -1 : 0#var float4 gl_LightSource[2].specular : state.light[2].specular : : -1 : 0#var float4 gl_LightSource[2].position : state.light[2].position : : -1 : 0#var float4 gl_LightSource[2].halfVector : state.light[2].half : : -1 : 0#var float3 gl_LightSource[2].spotDirection : state.light[2].spot.direction : : -1 : 0#var float gl_LightSource[2].spotExponent : state.light[2].attenuation.w : : -1 : 0#var float gl_LightSource[2].spotCutoff : NONE : : -1 : 0#var float gl_LightSource[2].spotCosCutoff : state.light[2].spot.direction.w : : -1 : 0#var float gl_LightSource[2].constantAttenuation : state.light[2].attenuation.x : : -1 : 0#var float gl_LightSource[2].linearAttenuation : state.light[2].attenuation.y : : -1 : 0#var float gl_LightSource[2].quadraticAttenuation : state.light[2].attenuation.z : : -1 : 0#var float4 gl_LightSource[3].ambient : state.light[3].ambient : : -1 : 0#var float4 gl_LightSource[3].diffuse : state.light[3].diffuse : : -1 : 0#var float4 gl_LightSource[3].specular : state.light[3].specular : : -1 : 0#var float4 gl_LightSource[3].position : state.light[3].position : : -1 : 0#var float4 gl_LightSource[3].halfVector : state.light[3].half : : -1 : 0#var float3 gl_LightSource[3].spotDirection : state.light[3].spot.direction : : -1 : 0#var float gl_LightSource[3].spotExponent : state.light[3].attenuation.w : : -1 : 0#var float gl_LightSource[3].spotCutoff : NONE : : -1 : 0#var float gl_LightSource[3].spotCosCutoff : state.light[3].spot.direction.w : : -1 : 0#var float gl_LightSource[3].constantAttenuation : state.light[3].attenuation.x : : -1 : 0#var float gl_LightSource[3].linearAttenuation : state.light[3].attenuation.y : : -1 : 0#var float gl_LightSource[3].quadraticAttenuation : state.light[3].attenuation.z : : -1 : 0#var float4 gl_LightSource[4].ambient : state.light[4].ambient : : -1 : 0#var float4 gl_LightSource[4].diffuse : state.light[4].diffuse : : -1 : 0#var float4 gl_LightSource[4].specular : state.light[4].specular : : -1 : 0#var float4 gl_LightSource[4].position : state.light[4].position : : -1 : 0#var float4 gl_LightSource[4].halfVector : state.light[4].half : : -1 : 0#var float3 gl_LightSource[4].spotDirection : state.light[4].spot.direction : : -1 : 0#var float gl_LightSource[4].spotExponent : state.light[4].attenuation.w : : -1 : 0#var float gl_LightSource[4].spotCutoff : NONE : : -1 : 0#var float gl_LightSource[4].spotCosCutoff : state.light[4].spot.direction.w : : -1 : 0#var float gl_LightSource[4].constantAttenuation : state.light[4].attenuation.x : : -1 : 0#var float gl_LightSource[4].linearAttenuation : state.light[4].attenuation.y : : -1 : 0#var float gl_LightSource[4].quadraticAttenuation : state.light[4].attenuation.z : : -1 : 0#var float4 gl_LightSource[5].ambient : state.light[5].ambient : : -1 : 0#var float4 gl_LightSource[5].diffuse : state.light[5].diffuse : : -1 : 0#var float4 gl_LightSource[5].specular : state.light[5].specular : : -1 : 0#var float4 gl_LightSource[5].position : state.light[5].position : : -1 : 0#var float4 gl_LightSource[5].halfVector : state.light[5].half : : -1 : 0#var float3 gl_LightSource[5].spotDirection : state.light[5].spot.direction : : -1 : 0#var float gl_LightSource[5].spotExponent : state.light[5].attenuation.w : : -1 : 0#var float gl_LightSource[5].spotCutoff : NONE : : -1 : 0#var float gl_LightSource[5].spotCosCutoff : state.light[5].spot.direction.w : : -1 : 0#var float gl_LightSource[5].constantAttenuation : state.light[5].attenuation.x : : -1 : 0#var float gl_LightSource[5].linearAttenuation : state.light[5].attenuation.y : : -1 : 0#var float gl_LightSource[5].quadraticAttenuation : state.light[5].attenuation.z : : -1 : 0#var float4 gl_LightSource[6].ambient : state.light[6].ambient : : -1 : 0#var float4 gl_LightSource[6].diffuse : state.light[6].diffuse : : -1 : 0#var float4 gl_LightSource[6].specular : state.light[6].specular : : -1 : 0#var float4 gl_LightSource[6].position : state.light[6].position : : -1 : 0#var float4 gl_LightSource[6].halfVector : state.light[6].half : : -1 : 0#var float3 gl_LightSource[6].spotDirection : state.light[6].spot.direction : : -1 : 0#var float gl_LightSource[6].spotExponent : state.light[6].attenuation.w : : -1 : 0#var float gl_LightSource[6].spotCutoff : NONE : : -1 : 0#var float gl_LightSource[6].spotCosCutoff : state.light[6].spot.direction.w : : -1 : 0#var float gl_LightSource[6].constantAttenuation : state.light[6].attenuation.x : : -1 : 0#var float gl_LightSource[6].linearAttenuation : state.light[6].attenuation.y : : -1 : 0#var float gl_LightSource[6].quadraticAttenuation : state.light[6].attenuation.z : : -1 : 0#var float4 gl_LightSource[7].ambient : state.light[7].ambient : : -1 : 0#var float4 gl_LightSource[7].diffuse : state.light[7].diffuse : : -1 : 0#var float4 gl_LightSource[7].specular : state.light[7].specular : : -1 : 0#var float4 gl_LightSource[7].position : state.light[7].position : : -1 : 0#var float4 gl_LightSource[7].halfVector : state.light[7].half : : -1 : 0#var float3 gl_LightSource[7].spotDirection : state.light[7].spot.direction : : -1 : 0#var float gl_LightSource[7].spotExponent : state.light[7].attenuation.w : : -1 : 0#var float gl_LightSource[7].spotCutoff : NONE : : -1 : 0#var float gl_LightSource[7].spotCosCutoff : state.light[7].spot.direction.w : : -1 : 0#var float gl_LightSource[7].constantAttenuation : state.light[7].attenuation.x : : -1 : 0#var float gl_LightSource[7].linearAttenuation : state.light[7].attenuation.y : : -1 : 0#var float gl_LightSource[7].quadraticAttenuation : state.light[7].attenuation.z : : -1 : 0#const c[5] = 2 1 0.5 0#const c[6] = 0.60000002 0.54000002 0.80000001 0.2PARAM c[7] = { program.local[0], state.light[0].ambient, state.light[0].diffuse, program.local[3], state.light[0].position, { 2, 1, 0.5, 0 }, { 0.60000002, 0.54000002, 0.80000001, 0.2 } };TEMP R0;TEMP R1;TEMP RC;TEMP HC;OUTPUT oCol = result.color;TEX R0, fragment.texcoord[0], texture[0], 2D;MADR R0.xyz, R0, c[5].x, -c[5].y;MULR R1.xyz, R0.y, fragment.texcoord[2];MADR R1.xyz, R0.x, fragment.texcoord[1], R1;MADR R0.xyz, R0.z, fragment.texcoord[3], R1;DP3R R1.x, R0, R0;RSQR R1.x, R1.x;SGTRC HC.x, R0.w, c[5].z;MULR R0.xyz, R1.x, R0;IF NE.x;DP3R R0.x, R0, c[4];MOVR R0.w, c[6].y;MULR R1.xyz, R0.w, c[1];MAXR R0.x, R0, c[5].w;MULR R0.xyz, R0.x, c[2];MOVR R0.w, c[5].y;MADR R0.xyz, R0, c[6].x, R1;MINR oCol, R0, c[5].y;ELSE;DP3R R0.x, R0, c[4];MOVR R0.y, c[6].w;MULR R1.xyz, R0.y, c[1];MAXR R0.x, R0, c[5].w;MULR R0.xyz, R0.x, c[2];MADR oCol.xyz, R0, c[6].z, R1;MOVR oCol.w, c[5].y;ENDIF;TEX R0, fragment.texcoord[0], texture[1], 2D;MULR oCol, oCol, R0;END# 29 instructions, 2 R-regs, 0 H-regsprogram link failed
At this point the trees are still the same old trees i designed years ago, but the architecture changed quite drastically improving performance and visual quality. I added automatic imposter generation, better support for lighting and fog, normal mapping, anisotropic filtering, just to name a few things. I also made it fully freeware as i saw i really don't have the time to activly sell it. Or the time to improve it to commercial quality for that matter.
This version now also includes full geometry export functionality as originally implemented for a non-public version. So if for some reason you hate how TreeLib renders the trees but do like the geometry then you can export and render them manually.
Here's a screenshot to how the bark looks close up (using the provided textures):
And here a shot at a gallery of 10000 instances of the same tree:
Can you tell where geometrical trees end and imposters begin?
(yes, the imposters use normal mapping if available)
From this point on I will concentrate on adding new types of trees. I even have an idea for a script-like system for trees but I'll have to experiment with that before i can promise anything. For now it was more important to me to get the library back to usability in regards to visuals and performance.
Finally you can download the library (including, manual) and/or a fully functioning demo application here:
http://www.delta-works.org/download/?&details=TreeLib
I'm open for criticism, complaints, requests, suggestions, whatever. So feel free to post your thoughts here :)
And now i shall get back to make those blasted trees nicer.
Regards :)
