334 questions
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What is the least computationally expensive way to update a vertex buffer in order to refresh vertex positions?
Right now, I have a simple MacOS application with a MTKView occupying most of the window and a panel on the right to change values that affect what the MTKView renders. Currently, there is a slider ...
1
vote
1
answer
84
views
OpenGL pygame cannot get buffers working reliably with vertextPointer and colorPointer
So I'm pretty sure I'm just doing something wrong here with how I'm calling the OpenGL.
I've provided an example below where about 30% of the time it shows the semi transparent vertex colored squares ...
- 625
0
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1
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371
views
Associating an attribute with multiple VBOs using glVertexAttribBinding/glVertexArrayAttribBinding
Suppose I have 2 meshes and I used one VBO for each mesh. The vertex attributes (position, normal, color)
are contained in a struct:
struct Vertex {
glm::vec3 position;
glm::vec3 normal;
glm::...
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1
answer
221
views
Can I append vertexes to a default buffer using UpdateSubresources?
The documentation for UpdateSubresources is here. The parameter descriptions are so minimal that they aren't very helpful to someone using the function for the first time (like me).
UINT64 inline ...
- 16.8k
2
votes
1
answer
1k
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How to make the vertex buffer available to a compute shader
I have a C++ program that uses Direct3D to draw a 3D model. That program works as expected, i.e. images of the 3D model are properly rendered. The next step is to write a compute shader that takes the ...
- 2,117
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58
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Directx11 vertexbuffer
I'm trying to learn how to program a simple 2d game using directx 11 and I have a question regarding the vertex buffer, I created a 1.0f x 1.0f square to load a 512x512 pixel texture, to create a ...
0
votes
2
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454
views
WebGPU. How to SET COLOR PER TRIANGLE, but not per vertex, and USE ONLY VERTEX BUFFER
I am trying to set color per triangle.
But it is not working.
Only setting color per vertex works!
This is what I made:
<!DOCTYPE html><title>Color Per Triangle</title><style>
...
- 141
-1
votes
2
answers
513
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Importing 3d model(fbx) using Assimp creates higher number of vertices than original 3d model
I have a simple human face 3d model with 468 vertices. In blender stats also shows 468 vertices and 898 faces, when I import/read using Assimp, it becomes 2694 vertices(which I think 3×number of faces)...
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2
votes
0
answers
525
views
Vulkan StorageBuffer versus VertexBuffer
I'm experimenting with Vulkan rendering, and noticed that we can render using StorageBuffer + gl_VertexIndex instead of VertexBuffer. I've seen this in Metal API tutorials.
There are any benefits of ...
- 163
1
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0
answers
397
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Unity: How to edit vertex after skinned mesh animation has been applied
As a test im trying to move an animated skinned mesh up and down per vertex but it doesnt really work.
without offset
with offset 1 in the y
Im fairly certain that the vertices im changing are before ...
- 11
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1
answer
352
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Issue with read vertex / index buffer with structured buffer in DXR
Scene is just like above image(Sponza scene), and I think texture index for each geometry is good, but texture coordinate seems wrong
I'm currently upload descriptor in descriptor heap like this :
(...
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1
answer
453
views
Adding vertices on mouse click in DirectX 12
I'm trying to implement a functionality where a vertex is added whenever the user clicks
on the viewport.
So far I've managed to draw vertices with the mouse using D3D_PRIMITIVE_TOPOLOGY_LINESTRIP,
...
0
votes
1
answer
2k
views
Vertex attribute not consumed by shader for my Vulkan program
I'm working with a tutorial to help learn Vulkan in C++, and I'm stuck trying to be able to change what my vertices are and colors. It always shows a triangle with 3 colors interpolated between each ...
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0
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1
answer
1k
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Unity: skinned mesh vertexbuffer output slightly different than correct results
It’s like this hip is stuck in place, with in the pictures(being at different times in the animation since I can’t upload a gif) the red wireframe is the drawing of the raw output triangles and ...
- 21
1
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1
answer
846
views
Drawing two triangles using index buffer
I am following Cherno's brilliant series on OpenGL, and I have encountered a problem. I have moved on from using a vertex buffer only, to now using a vertex buffer together with an index buffer.
What ...
- 1,301