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geometry shader test

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This commit is contained in:
micuat 2020-10-31 18:40:31 +01:00
parent a61e8d7cb0
commit c3c55ae4c7
4 changed files with 78 additions and 15 deletions
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18
zoneb/bin/data/shaders/particles/draw.frag
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@ -21,10 +21,10 @@ uniform vec3 uHottest3d1;
uniform vec3 uBetween;
in vec2 texCoordVarying;
in vec3 vPos;
in vec4 vTarget;
in float vTemperature;
in float vAge;
in vec3 gPos;
in vec4 gTarget;
in float gTemperature;
in float gAge;
vec3 random3(vec3 c) {
@ -104,16 +104,16 @@ float simplex3d_fractal(vec3 m) {
void main()
{
vec2 palette = vec2(vTemperature*3425, 0.5);
vec2 palette = vec2(gTemperature*3425, 0.5);
vec3 remapedColorW = texture(warm1, palette).xyz;
vec3 remapedColorC = texture(cold2, palette).xyz;
float d = 80;
float D = 600;
float n = (simplex3d(vPos * vec3(0.01, 0.01, 0.1 * sin(u_time * 0.01)))) * 100;
float rate = 1-smoothstep(D - d, D + d, length(vPos.x + uBetween.x) + n);
float n = (simplex3d(gPos * vec3(0.01, 0.01, 0.1 * sin(u_time * 0.01)))) * 100;
float rate = 1-smoothstep(D - d, D + d, length(gPos.x + uBetween.x) + n);
rate *= uAreThereTwoPeopleTween;
vec3 remapedColor = mix(remapedColorC, remapedColorW, rate);
float alpha = max(0, 1 - pow(vAge,4)) * .3;
float alpha = max(0, 1 - pow(gAge,4)) * .2;
// if(vTemperature < 0.5) {
// alpha *= vTemperature * 2;
@ -122,7 +122,7 @@ void main()
// alpha *= 2;
// }
if(vPos.z > -200) {
if(gPos.z > -200) {
alpha = 0;
}
vec4 color = vec4(remapedColor, alpha);

55
zoneb/bin/data/shaders/particles/draw.geom Normal file
View file

@ -0,0 +1,55 @@
layout (points) in;
layout (triangle_strip) out;
layout (max_vertices = 4) out;
// OF handled uniforms and attributes.
uniform mat4 projectionMatrix;
// App specific uniforms and attributes.
// uniform float uSpriteSize;
in vec4 vPosition[];
in vec2 vTexCoord[];
flat in int vValid[];
out vec2 texCoordVarying;
in vec3 vPos[];
in vec4 vTarget[];
in float vTemperature[];
in float vAge[];
// out vec2 gTexCoord;
out vec3 gPos;
out vec4 gTarget;
out float gTemperature;
out float gAge;
void main()
{
float uSpriteSize = 1.5;
// if (vValid[0] == 0) return;
texCoordVarying = vTexCoord[0];
gPos = vPos[0];
gTarget = vTarget[0];
gTemperature = vTemperature[0];
gAge = vAge[0];
for (int i = 0; i < gl_in.length(); ++i)
{
gl_Position = projectionMatrix * (vPosition[i] + vec4(1.0, -1.0, 0.0, 0.0) * uSpriteSize);
EmitVertex();
gl_Position = projectionMatrix * (vPosition[i] + vec4(1.0, 1.0, 0.0, 0.0) * uSpriteSize);
EmitVertex();
gl_Position = projectionMatrix * (vPosition[i] + vec4(-1.0, -1.0, 0.0, 0.0) * uSpriteSize);
EmitVertex();
gl_Position = projectionMatrix * (vPosition[i] + vec4(-1.0, 1.0, 0.0, 0.0) * uSpriteSize);
EmitVertex();
EndPrimitive();
}
}

15
zoneb/bin/data/shaders/particles/draw.vert
View file

@ -1,4 +1,5 @@
uniform mat4 modelViewProjectionMatrix;
uniform mat4 modelViewMatrix;
uniform sampler2DRect particles0;
uniform sampler2DRect particles1;
uniform sampler2DRect particles2;
@ -7,19 +8,21 @@ uniform sampler2DRect particles3;
in vec4 position;
in vec2 texcoord;
out vec2 texCoordVarying;
out vec2 vTexCoord;
out vec3 vPos;
out vec4 vTarget;
out float vTemperature;
out float vAge;
out vec4 vPosition;
void main()
{
texCoordVarying = texcoord;
vec4 misc = texture(particles2, texCoordVarying);
vec4 vTarget = texture(particles3, texCoordVarying);
// vTexCoord = vec2(gl_InstanceID % 512, gl_InstanceID / 512);
vTexCoord = texcoord;
vec4 misc = texture(particles2, vTexCoord);
vec4 vTarget = texture(particles3, vTexCoord);
vTemperature = misc.x;
vAge = misc.y;
vPos = texture(particles0, texCoordVarying).xyz;
gl_Position = modelViewProjectionMatrix * vec4(vPos, 1.0);
vPos = texture(particles0, vTexCoord).xyz;
vPosition = modelViewMatrix * vec4(vPos, 1.0);
}

5
zoneb/src/ofApp.cpp
View file

@ -365,6 +365,11 @@ void ofApp::draw()
if (blendAdd)
{
ofEnableBlendMode(OF_BLENDMODE_ADD);
ofDisableDepthTest();
}
else
{
ofEnableDepthTest();
}
particles.draw();
if (blendAdd)