OpenGL not drawing nearest fragment to the camera
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1
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I have a scene with a teapot mesh in it.
I'm using a framgment shader to light it using a source of light whose value is equal to 10.
When the scene is rendered to the default framebuffer, everything seems to be fine. 
But, if it's rendered in a custom framebuffer, the result looks like this :
OpenGL seems to prefer triangles defined "at the end of" the mesh.
I want the framebuffer to contain 16bits floats so I can store values larger than 1.0.
Sorry for my English.
opengl mesh fragment-shader framebuffer
asked Nov 10 at 19:50
Elirovi
1048
add a comment |
up vote
1
down vote
favorite
I have a scene with a teapot mesh in it.
I'm using a framgment shader to light it using a source of light whose value is equal to 10.
When the scene is rendered to the default framebuffer, everything seems to be fine.
But, if it's rendered in a custom framebuffer, the result looks like this :
OpenGL seems to prefer triangles defined "at the end of" the mesh.
I want the framebuffer to contain 16bits floats so I can store values larger than 1.0.
Sorry for my English.
opengl mesh fragment-shader framebuffer
asked Nov 10 at 19:50
Elirovi
1048
1
Probably you don't attach a depth buffer to the framebuffer.
– Rabbid76
Nov 10 at 20:06
Oh. You're probably right. I didn't think of that. I'll do it right now.
– Elirovi
Nov 10 at 20:11
@Rabbid76, I just added and attached a depth renderBuffer to my framebuffer and now I'm not getting any result
– Elirovi
Nov 10 at 20:19
Ok I just found out what I did wrong : I forgot to clear the depth buffer in the drawcall usingglClear(GL_COLOR_BUFFER_BIT | **GL_DEPTH_BUFFER_BIT**);
– Elirovi
Nov 10 at 20:21
1
Possibly someone would've pointed that out, if you would've added any code to the question. Please read How to create a Minimal, Complete, and Verifiable example.
– Rabbid76
Nov 10 at 20:24
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I have a scene with a teapot mesh in it.
I'm using a framgment shader to light it using a source of light whose value is equal to 10.
When the scene is rendered to the default framebuffer, everything seems to be fine.
But, if it's rendered in a custom framebuffer, the result looks like this :
OpenGL seems to prefer triangles defined "at the end of" the mesh.
I want the framebuffer to contain 16bits floats so I can store values larger than 1.0.
Sorry for my English.
opengl mesh fragment-shader framebuffer
asked Nov 10 at 19:50
Elirovi
1048
I have a scene with a teapot mesh in it.
I'm using a framgment shader to light it using a source of light whose value is equal to 10.
When the scene is rendered to the default framebuffer, everything seems to be fine.
But, if it's rendered in a custom framebuffer, the result looks like this :
OpenGL seems to prefer triangles defined "at the end of" the mesh.
I want the framebuffer to contain 16bits floats so I can store values larger than 1.0.
Sorry for my English.
opengl mesh fragment-shader framebuffer
opengl mesh fragment-shader framebuffer
asked Nov 10 at 19:50
Elirovi
1048
asked Nov 10 at 19:50
Elirovi
1048
asked Nov 10 at 19:50
Elirovi
1048
asked Nov 10 at 19:50
Elirovi
1048
asked Nov 10 at 19:50
Elirovi
1048
1048
1
Probably you don't attach a depth buffer to the framebuffer.
– Rabbid76
Nov 10 at 20:06
Oh. You're probably right. I didn't think of that. I'll do it right now.
– Elirovi
Nov 10 at 20:11
@Rabbid76, I just added and attached a depth renderBuffer to my framebuffer and now I'm not getting any result
– Elirovi
Nov 10 at 20:19
Ok I just found out what I did wrong : I forgot to clear the depth buffer in the drawcall usingglClear(GL_COLOR_BUFFER_BIT | **GL_DEPTH_BUFFER_BIT**);
– Elirovi
Nov 10 at 20:21
1
Possibly someone would've pointed that out, if you would've added any code to the question. Please read How to create a Minimal, Complete, and Verifiable example.
– Rabbid76
Nov 10 at 20:24
add a comment |
1
Probably you don't attach a depth buffer to the framebuffer.
– Rabbid76
Nov 10 at 20:06
Oh. You're probably right. I didn't think of that. I'll do it right now.
– Elirovi
Nov 10 at 20:11
@Rabbid76, I just added and attached a depth renderBuffer to my framebuffer and now I'm not getting any result
– Elirovi
Nov 10 at 20:19
Ok I just found out what I did wrong : I forgot to clear the depth buffer in the drawcall usingglClear(GL_COLOR_BUFFER_BIT | **GL_DEPTH_BUFFER_BIT**);
– Elirovi
Nov 10 at 20:21
1
Possibly someone would've pointed that out, if you would've added any code to the question. Please read How to create a Minimal, Complete, and Verifiable example.
– Rabbid76
Nov 10 at 20:24
1
1
Probably you don't attach a depth buffer to the framebuffer.
– Rabbid76
Nov 10 at 20:06
Probably you don't attach a depth buffer to the framebuffer.
– Rabbid76
Nov 10 at 20:06
Oh. You're probably right. I didn't think of that. I'll do it right now.
– Elirovi
Nov 10 at 20:11
Oh. You're probably right. I didn't think of that. I'll do it right now.
– Elirovi
Nov 10 at 20:11
@Rabbid76, I just added and attached a depth renderBuffer to my framebuffer and now I'm not getting any result
– Elirovi
Nov 10 at 20:19
@Rabbid76, I just added and attached a depth renderBuffer to my framebuffer and now I'm not getting any result
– Elirovi
Nov 10 at 20:19
Ok I just found out what I did wrong : I forgot to clear the depth buffer in the drawcall using
glClear(GL_COLOR_BUFFER_BIT | **GL_DEPTH_BUFFER_BIT**);– Elirovi
Nov 10 at 20:21
Ok I just found out what I did wrong : I forgot to clear the depth buffer in the drawcall using
glClear(GL_COLOR_BUFFER_BIT | **GL_DEPTH_BUFFER_BIT**);– Elirovi
Nov 10 at 20:21
1
1
Possibly someone would've pointed that out, if you would've added any code to the question. Please read How to create a Minimal, Complete, and Verifiable example.
– Rabbid76
Nov 10 at 20:24
Possibly someone would've pointed that out, if you would've added any code to the question. Please read How to create a Minimal, Complete, and Verifiable example.
– Rabbid76
Nov 10 at 20:24
add a comment |
1 Answer
1
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oldest
votes
up vote
1
down vote
accepted
I forgot to add a depth renderBuffer and clear it using glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
To do so, add :
GLuint rboDepth;
glGenRenderbuffers(1, &rboDepth);
glBindRenderbuffer(GL_RENDERBUFFER, rboDepth);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width(), height());
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rboDepth);
to your framebuffer implementation while it's bound.
answered Nov 10 at 20:29
Elirovi
1048
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
accepted
I forgot to add a depth renderBuffer and clear it using glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
To do so, add :
GLuint rboDepth;
glGenRenderbuffers(1, &rboDepth);
glBindRenderbuffer(GL_RENDERBUFFER, rboDepth);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width(), height());
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rboDepth);
to your framebuffer implementation while it's bound.
answered Nov 10 at 20:29
Elirovi
1048
add a comment |
up vote
1
down vote
accepted
I forgot to add a depth renderBuffer and clear it using glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
To do so, add :
GLuint rboDepth;
glGenRenderbuffers(1, &rboDepth);
glBindRenderbuffer(GL_RENDERBUFFER, rboDepth);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width(), height());
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rboDepth);
to your framebuffer implementation while it's bound.
answered Nov 10 at 20:29
Elirovi
1048
add a comment |
up vote
1
down vote
accepted
up vote
1
down vote
accepted
I forgot to add a depth renderBuffer and clear it using glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
To do so, add :
GLuint rboDepth;
glGenRenderbuffers(1, &rboDepth);
glBindRenderbuffer(GL_RENDERBUFFER, rboDepth);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width(), height());
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rboDepth);
to your framebuffer implementation while it's bound.
answered Nov 10 at 20:29
Elirovi
1048
I forgot to add a depth renderBuffer and clear it using glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
To do so, add :
GLuint rboDepth;
glGenRenderbuffers(1, &rboDepth);
glBindRenderbuffer(GL_RENDERBUFFER, rboDepth);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width(), height());
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rboDepth);
to your framebuffer implementation while it's bound.
answered Nov 10 at 20:29
Elirovi
1048
answered Nov 10 at 20:29
Elirovi
1048
answered Nov 10 at 20:29
Elirovi
1048
answered Nov 10 at 20:29
Elirovi
1048
1048
add a comment |
add a comment |
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1
Probably you don't attach a depth buffer to the framebuffer.
– Rabbid76
Nov 10 at 20:06
Oh. You're probably right. I didn't think of that. I'll do it right now.
– Elirovi
Nov 10 at 20:11
@Rabbid76, I just added and attached a depth renderBuffer to my framebuffer and now I'm not getting any result
– Elirovi
Nov 10 at 20:19
Ok I just found out what I did wrong : I forgot to clear the depth buffer in the drawcall using
glClear(GL_COLOR_BUFFER_BIT | **GL_DEPTH_BUFFER_BIT**);– Elirovi
Nov 10 at 20:21
1
Possibly someone would've pointed that out, if you would've added any code to the question. Please read How to create a Minimal, Complete, and Verifiable example.
– Rabbid76
Nov 10 at 20:24