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ported the University CGI demo from WINDOWS + GLUT + GLEW + GLU + OpenGL 4 to LINUX WAYLAND + EGL + GLES 2 with minimal cuts

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beno
2025-07-03 01:26:25 +02:00
commit 6c125fb35e
85 changed files with 91688 additions and 0 deletions
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10
resources/SCENE/Basic.mtl Executable file
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# Blender MTL File: 'column.blend'
# Material Count: 1
newmtl None
Ns 500
Ka 0.8 0.8 0.8
Kd 0.8 0.8 0.8
Ks 0.8 0.8 0.8
d 1
illum 2

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resources/SCENE/Basic.obj Executable file
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resources/SCENE/LShape.mtl Executable file
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# Blender MTL File: 'column.blend'
# Material Count: 1
newmtl None
Ns 500
Ka 0.8 0.8 0.8
Kd 0.8 0.8 0.8
Ks 0.8 0.8 0.8
d 1
illum 2

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resources/SCENE/LShape.obj Executable file
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resources/SCENE/Mid.mtl Executable file
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# Blender MTL File: 'column.blend'
# Material Count: 1
newmtl None
Ns 500
Ka 0.8 0.8 0.8
Kd 0.8 0.8 0.8
Ks 0.8 0.8 0.8
d 1
illum 2

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resources/SCENE/Mid.obj Executable file
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resources/SCENE/mid_tail.mtl Executable file
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# Blender MTL File: 'column.blend'
# Material Count: 1
newmtl None
Ns 500
Ka 0.8 0.8 0.8
Kd 0.8 0.8 0.8
Ks 0.8 0.8 0.8
d 1
illum 2

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resources/SCENE/mid_tail.obj Executable file
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125
resources/SCENE/scene.txt Executable file
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Basic
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LShape
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Mid
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BIN
resources/cube3.png Executable file
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41
resources/curve5.txt Executable file
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NurbsPath
curve 0 : NURBS
order 4 cyclic
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60
resources/fragmentShader_gourard.glsl Executable file
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#version 300 es
/*this will affect all the float guys (float, vecN, matN )*/
precision mediump float;
in vec3 fragPos; //vertice in coordinata del mondo
in vec3 fragNormal;
in vec2 frag_uv; //coordinate 2d di texure
in vec3 fragBaryc;
in vec3 T;
in vec3 B;
in vec3 N;
uniform vec3 lightCol;
uniform vec3 lightPos;
uniform vec3 eyePos;
//uniform vec3 diffuseColor;
uniform sampler2D colorMap; //campionatore 2d
uniform sampler2D normalMap; //campionatore 2d
out vec4 FragColor;
float illuminazione(vec3 lucePos, vec3 fragPos, vec3 eyePos, vec3 fragNormal){
fragNormal = normalize(fragNormal);
vec3 aLuceDir = normalize(lucePos - fragPos);
vec3 allOcchioDir = normalize(eyePos - fragPos);
float lightDistance = length(lucePos - fragPos);
vec3 rimbalzoDir = normalize(reflect(-aLuceDir,fragNormal));
rimbalzoDir = reflect(-aLuceDir,fragNormal);
float attenuation = 1.0f / (0.01 * lightDistance);
float diffuseFactor = max(dot(aLuceDir, fragNormal), 0.0);
float specularFactor = pow(max(dot(rimbalzoDir, allOcchioDir), 0.0), 500.0f);
return attenuation * ( specularFactor + diffuseFactor );
//return attenuation * diffuseFactor;
}
void main()
{
vec3 Nor = normalize(N);
vec3 Tan = normalize(T);
vec3 Bit = normalize(B);
mat3 TBN = mat3(Tan,Bit,Nor);
vec4 texColor = texture(colorMap,frag_uv);
vec3 normalPix = texture(normalMap,frag_uv).rgb;
normalPix = normalPix * 2.0 - 1.0;
normalPix = normalize(TBN * normalPix);
normalPix = normalize(TBN * vec3(0,0,1));
vec3 result = texColor.rgb * illuminazione(lightPos, fragPos, eyePos, normalPix);
//FragColor = vec4(normalPix, 1.0f);
FragColor = vec4(texColor.xyz * illuminazione(lightPos, fragPos, eyePos, fragNormal), 1.0f);
}

19
resources/fragmentShader_lines.glsl Executable file
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#version 300 es
/*this will affect all the float guys (float, vecN, matN )*/
precision mediump float;
in vec3 fragPos; //vertice in coordinata del mondo
uniform vec3 baseColor;
out vec4 FragColor;
void main()
{
vec3 result = baseColor;
FragColor = vec4(result, 1.0f);
}

81
resources/fragmentShader_pulse.glsl Executable file
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#version 300 es
/*this will affect all the float guys (float, vecN, matN )*/
precision mediump float;
in vec3 fragPos; //vertice in coordinata del mondo
in vec3 fragNormal;
in vec2 frag_uv; //coordinate 2d di texure
in vec3 fragBoundPos;
in vec3 fragBaryc;
/* does gles2 already includes it and considers it a redeclaration
in vec4 gl_FragCoord;
*/
in mat3 TBN;
uniform vec3 lightCol;
uniform vec3 lightPos;
uniform vec3 eyePos;
uniform float time;
//uniform vec3 diffuseColor;
uniform sampler2D colorMap; //campionatore 2d
uniform sampler2D normalMap; //campionatore 2d
out vec4 FragColor;
/*
int nScanLines = 16;
*/
float f_nScanLines = 16.0;
float PI = 3.14159265358979323846264338327950288;
float illuminazione(vec3 lucePos, vec3 fragPos, vec3 eyePos, vec3 fragNormal){
fragNormal = normalize(fragNormal);
vec3 aLuceDir = normalize(lucePos - fragPos);
vec3 allOcchioDir = normalize(eyePos - fragPos);
float lightDistance = length(lucePos - fragPos);
vec3 rimbalzoDir = - normalize(reflect(aLuceDir,fragNormal));
float attenuation = 1.0f / (0.01 * lightDistance);
float diffuseFactor = max(dot(aLuceDir, fragNormal), 0.0);
float specularFactor = pow(max(dot(rimbalzoDir, allOcchioDir), 0.0), 100.0f);
return attenuation * ( specularFactor + diffuseFactor);
}
void main()
{
vec4 texColor = texture(colorMap,frag_uv);
vec3 normalPix = texture(normalMap,frag_uv).rgb;
normalPix = normalPix * 2.0 - 1.0;
normalPix = normalize(TBN * normalPix);
float sinExp = 500.0 * (0.05 + 0.95 * sin( 3.14159265359 * 0.25 * (time * time)));
//float sinExp = 500.0;
float clampBound = 0.25;
vec3 result = 0.7 * vec3(1,0.5,1);
float locy = fragBoundPos.y;
locy = mod(locy, 1.0f / f_nScanLines);
float dist = abs(pow(locy - (time / f_nScanLines), 0.1));
float glowFac = (1.0 / clampBound) * abs(clamp(
pow(sin(dist * PI), sinExp), -clampBound, clampBound));
float scrDist = sin( PI * ( 1.0 - clamp(pow(gl_FragCoord.z , 100.0), 0.0, 1.0)));
result *= scrDist;
FragColor = vec4(result, 1.0f);
FragColor*=glowFac;
//FragColor = vec4(abs(fragNormal.x) * glowFac ,abs(fragNormal.y) * glowFac , abs(fragNormal.z) * glowFac , 1.0f * scrDist);
float baryThreshold = 0.05f;
if(fragBaryc.x > baryThreshold && fragBaryc.y > baryThreshold && fragBaryc.z > baryThreshold) {
FragColor = vec4(0.05 * FragColor.xyz, 0);
}
}

271
resources/ico.obj Executable file
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# Blender v2.91.0 OBJ File: ''
# www.blender.org
mtllib ico.mtl
o Icosphere
v 0.000000 -1.000000 0.000000
v 0.723607 -0.447220 0.525725
v -0.276388 -0.447220 0.850649
v -0.894426 -0.447216 0.000000
v -0.276388 -0.447220 -0.850649
v 0.723607 -0.447220 -0.525725
v 0.276388 0.447220 0.850649
v -0.723607 0.447220 0.525725
v -0.723607 0.447220 -0.525725
v 0.276388 0.447220 -0.850649
v 0.894426 0.447216 0.000000
v 0.000000 1.000000 0.000000
v -0.162456 -0.850654 0.499995
v 0.425323 -0.850654 0.309011
v 0.262869 -0.525738 0.809012
v 0.850648 -0.525736 0.000000
v 0.425323 -0.850654 -0.309011
v -0.525730 -0.850652 0.000000
v -0.688189 -0.525736 0.499997
v -0.162456 -0.850654 -0.499995
v -0.688189 -0.525736 -0.499997
v 0.262869 -0.525738 -0.809012
v 0.951058 0.000000 0.309013
v 0.951058 0.000000 -0.309013
v 0.000000 0.000000 1.000000
v 0.587786 0.000000 0.809017
v -0.951058 0.000000 0.309013
v -0.587786 0.000000 0.809017
v -0.587786 0.000000 -0.809017
v -0.951058 0.000000 -0.309013
v 0.587786 0.000000 -0.809017
v 0.000000 0.000000 -1.000000
v 0.688189 0.525736 0.499997
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v -0.262869 0.525738 -0.809012
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v -0.425323 0.850654 0.309011
v -0.425323 0.850654 -0.309011
v 0.162456 0.850654 -0.499995
vt 0.818181 0.000000
vt 0.772726 0.078731
vt 0.863635 0.078731
vt 0.727272 0.157461
vt 0.681818 0.078731
vt 0.636363 0.157461
vt 0.090909 0.000000
vt 0.045454 0.078731
vt 0.136363 0.078731
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vt 0.500000 0.078731
vt 0.681818 0.236191
vt 0.909090 0.157461
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vt 0.863635 0.236191
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vt 0.136363 0.236191
vt 0.363636 0.157461
vt 0.272727 0.157461
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vt 0.772726 0.236191
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vt 0.227273 0.236191
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vt 0.818181 0.314921
vt 0.727272 0.314921
vt 0.772726 0.393651
vt 1.000000 0.314921
vt 0.909091 0.314921
vt 0.954545 0.393651
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vt 0.090909 0.314921
vt 0.863635 0.393651
vt 0.909090 0.472382
vt 0.681818 0.393651
vt 0.727272 0.472382
vt 0.045454 0.236191
vt 0.000000 0.157461
vt 0.590909 0.078731
vt 0.636363 0.000000
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vn 0.7002 -0.6617 0.2680
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usemtl None
s off
f 1/1/1 14/2/1 13/3/1
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41
resources/vertexShader_gourard.glsl Executable file
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#version 300 es
/*this will affect all the float guys (float, vecN, matN )*/
precision mediump float;
layout (location = 0) in vec3 vertPos; // Attributo Posizione
layout (location = 1) in vec2 coord_uv; // Attributo texture
layout (location = 2) in vec3 vertNor;
layout (location = 3) in vec3 vertTan;
layout (location = 4) in vec3 vertBitan;
uniform mat4 Model;
uniform mat4 ModelRot;
uniform mat4 Projection;
uniform mat4 View;
out vec3 fragPos;
out vec2 frag_uv;
out vec3 fragNormal;
out vec3 fragBaryc;
out vec3 T;
out vec3 B;
out vec3 N;
void main()
{
frag_uv = coord_uv;
vec3 normal = normalize(vertNor);
mat3 mv = mat3(View * Model);
T = normalize(mv * vertTan);
B = normalize(mv * vertBitan);
N = normalize(mv * vertNor);
fragNormal = mat3(ModelRot) * vec3(normal);
fragPos=(Model*vec4(vertPos,1)).xyz;
gl_Position=Projection*View*Model*vec4(vertPos,1);
fragBaryc = vec3(gl_VertexID % 3 == 0, gl_VertexID % 3 == 1, gl_VertexID % 3 == 2);
}

19
resources/vertexShader_lines.glsl Executable file
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@@ -0,0 +1,19 @@
#version 300 es
/*this will affect all the float guys (float, vecN, matN )*/
precision mediump float;
layout (location = 0) in vec3 vertPos; // Attributo Posizione
uniform mat4 Model;
uniform mat4 Projection;
uniform mat4 View;
out vec3 fragPos;
void main()
{
fragPos=(Model*vec4(vertPos,1)).xyz;
gl_Position=Projection*View*Model*vec4(vertPos,1);
}

47
resources/vertexShader_pulse.glsl Executable file
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@@ -0,0 +1,47 @@
#version 300 es
/*this will affect all the float guys (float, vecN, matN )*/
precision mediump float;
layout (location = 0) in vec3 vertPos; // Attributo Posizione
layout (location = 1) in vec2 coord_uv; // Attributo texture
layout (location = 2) in vec3 vertNor;
layout (location = 3) in vec3 vertTan;
layout (location = 4) in vec3 vertBitan;
uniform mat4 Model;
uniform mat4 ModelRot;
uniform mat4 Projection;
uniform mat4 View;
uniform vec3 boundingBoxLBN;
uniform vec3 boundingBoxRTF;
out vec3 fragPos;
out vec2 frag_uv;
out vec3 fragNormal;
out vec3 fragBoundPos;
out vec3 fragBaryc;
out mat3 TBN;
void main()
{
frag_uv = coord_uv;
vec3 normal = normalize(vertNor);
vec3 T = normalize(vec3(ModelRot * vec4(vertTan, 0.0)));
vec3 B = normalize(vec3(ModelRot * vec4(vertBitan, 0.0)));
vec3 N = normalize(vec3(ModelRot * vec4(vertNor, 0.0)));
TBN = mat3(T, B, N);
vec3 boundPos = vertPos - boundingBoxLBN;
vec3 boundDim = boundingBoxRTF - boundingBoxLBN;
fragBoundPos = vec3( boundPos.x / boundDim.x, boundPos.y / boundDim.y, boundPos.z / boundDim.z);
fragNormal = mat3(ModelRot) * vec3(normal);
fragPos=(Model*vec4(vertPos,1)).xyz;
fragBoundPos=(Model*vec4(boundPos,1)).xyz;
gl_Position=Projection*View*Model*vec4(vertPos,1);
fragBaryc = vec3(gl_VertexID % 3 == 0, gl_VertexID % 3 == 1, gl_VertexID % 3 == 2);
}

BIN
resources/waito.png Executable file
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