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Glsl error when trying to increment a variable inside a for loop
The Next CEO of Stack OverflowPassing a variable to an OpenGL GLSL shaderglUniformMatrix4fv fails with an error code of GL_INVALID_OPERATIONGLSL errors accessing float array with variable as indexHow to write value to specified coordinate in vertex shader with gl_position?Creating a triangle with OpenGL & GLSLAssigning a struct to a local variable in GLSLAbout the glsl for loopGLSL gl_VertexID is not incrementingGLSL/WebGL for loop error when not using increment operatorHow to initialize an array inside a struct GLSL
0
Context : I pass a uniform array of float to my fragment shader, then initialize a float with a value from this array, and finally try to increment this float in for loop, with this code :
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
refPoints : [0., 1., 0., 2.]
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>I am having a weird error :
Error: (regl) bad data or missing for uniform "refPoints[0]". invalid type, expected number in command unknown
I don't understand why this increment in this particular loop is causing so much trouble. Do you have any ideas ?
glsl regl
edited Mar 7 at 14:14
Rabbid76
42.3k123353
asked Mar 7 at 14:04
RenRen
103
add a comment |
0
Context : I pass a uniform array of float to my fragment shader, then initialize a float with a value from this array, and finally try to increment this float in for loop, with this code :
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
refPoints : [0., 1., 0., 2.]
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>I am having a weird error :
Error: (regl) bad data or missing for uniform "refPoints[0]". invalid type, expected number in command unknown
I don't understand why this increment in this particular loop is causing so much trouble. Do you have any ideas ?
glsl regl
edited Mar 7 at 14:14
Rabbid76
42.3k123353
asked Mar 7 at 14:04
RenRen
103
add a comment |
0
0
0
Context : I pass a uniform array of float to my fragment shader, then initialize a float with a value from this array, and finally try to increment this float in for loop, with this code :
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
refPoints : [0., 1., 0., 2.]
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>I am having a weird error :
Error: (regl) bad data or missing for uniform "refPoints[0]". invalid type, expected number in command unknown
I don't understand why this increment in this particular loop is causing so much trouble. Do you have any ideas ?
glsl regl
edited Mar 7 at 14:14
Rabbid76
42.3k123353
asked Mar 7 at 14:04
RenRen
103
Context : I pass a uniform array of float to my fragment shader, then initialize a float with a value from this array, and finally try to increment this float in for loop, with this code :
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
refPoints : [0., 1., 0., 2.]
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>I am having a weird error :
Error: (regl) bad data or missing for uniform "refPoints[0]". invalid type, expected number in command unknown
I don't understand why this increment in this particular loop is causing so much trouble. Do you have any ideas ?
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
refPoints : [0., 1., 0., 2.]
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
refPoints : [0., 1., 0., 2.]
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>glsl regl
glsl regl
edited Mar 7 at 14:14
Rabbid76
42.3k123353
asked Mar 7 at 14:04
RenRen
103
edited Mar 7 at 14:14
Rabbid76
42.3k123353
asked Mar 7 at 14:04
RenRen
103
edited Mar 7 at 14:14
Rabbid76
42.3k123353
edited Mar 7 at 14:14
Rabbid76
42.3k123353
edited Mar 7 at 14:14
Rabbid76
42.3k123353
42.3k123353
asked Mar 7 at 14:04
RenRen
103
asked Mar 7 at 14:04
RenRen
103
asked Mar 7 at 14:04
RenRen
103
103
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
0
AFAICT it's a bug in regl? It works if you use
uniforms:
"refPoints[0]": 0.,
"refPoints[1]": 1.,
"refPoints[2]": 0.,
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
"refPoints[0]" : 0.,
"refPoints[1]" : 1.,
"refPoints[2]" : 0.,
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>answered Mar 7 at 14:17
gmangman
49k17114207
Thanks ! I'm now switching to Three.js, as it looks way more alive than regl.
– Ren
Mar 7 at 15:45
add a comment |
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1 Answer
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oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
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active
oldest
votes
0
AFAICT it's a bug in regl? It works if you use
uniforms:
"refPoints[0]": 0.,
"refPoints[1]": 1.,
"refPoints[2]": 0.,
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
"refPoints[0]" : 0.,
"refPoints[1]" : 1.,
"refPoints[2]" : 0.,
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>answered Mar 7 at 14:17
gmangman
49k17114207
Thanks ! I'm now switching to Three.js, as it looks way more alive than regl.
– Ren
Mar 7 at 15:45
add a comment |
0
AFAICT it's a bug in regl? It works if you use
uniforms:
"refPoints[0]": 0.,
"refPoints[1]": 1.,
"refPoints[2]": 0.,
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
"refPoints[0]" : 0.,
"refPoints[1]" : 1.,
"refPoints[2]" : 0.,
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>answered Mar 7 at 14:17
gmangman
49k17114207
Thanks ! I'm now switching to Three.js, as it looks way more alive than regl.
– Ren
Mar 7 at 15:45
add a comment |
0
0
0
AFAICT it's a bug in regl? It works if you use
uniforms:
"refPoints[0]": 0.,
"refPoints[1]": 1.,
"refPoints[2]": 0.,
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
"refPoints[0]" : 0.,
"refPoints[1]" : 1.,
"refPoints[2]" : 0.,
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>answered Mar 7 at 14:17
gmangman
49k17114207
AFAICT it's a bug in regl? It works if you use
uniforms:
"refPoints[0]": 0.,
"refPoints[1]": 1.,
"refPoints[2]": 0.,
var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
"refPoints[0]" : 0.,
"refPoints[1]" : 1.,
"refPoints[2]" : 0.,
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
"refPoints[0]" : 0.,
"refPoints[1]" : 1.,
"refPoints[2]" : 0.,
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>var regl = createREGL()
var drawTriangle = regl(
vert: `
precision mediump float;
attribute vec2 position;
void main ()
gl_Position = vec4(position, 0, 1);
`,
frag: `
precision mediump float;
uniform float refPoints[3];
varying vec3 fcolor;
void main ()
float a_value = refPoints[1];
for(int i=0;i<3;++i)
a_value += 1.; // <-- this line is causing the error
gl_FragColor = vec4(1, 1, 1, 1);
`,
attributes:
position: [
[1, 0],
[0, 1],
[-1, -1]
],
,
uniforms :
"refPoints[0]" : 0.,
"refPoints[1]" : 1.,
"refPoints[2]" : 0.,
,
count: 3
)
regl.frame(function ()
regl.clear(
color: [0, 0, 0, 1],
depth: 1
)
drawTriangle()
)<script src="https://npmcdn.com/regl/dist/regl.js"></script>answered Mar 7 at 14:17
gmangman
49k17114207
answered Mar 7 at 14:17
gmangman
49k17114207
answered Mar 7 at 14:17
gmangman
49k17114207
answered Mar 7 at 14:17
gmangman
49k17114207
49k17114207
Thanks ! I'm now switching to Three.js, as it looks way more alive than regl.
– Ren
Mar 7 at 15:45
add a comment |
Thanks ! I'm now switching to Three.js, as it looks way more alive than regl.
– Ren
Mar 7 at 15:45
Thanks ! I'm now switching to Three.js, as it looks way more alive than regl.
– Ren
Mar 7 at 15:45
Thanks ! I'm now switching to Three.js, as it looks way more alive than regl.
– Ren
Mar 7 at 15:45
add a comment |
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