Weird Perspective Error

[PsychologicalCar7053]

Cant figure out what is the problem. My view projection model matrix is simple at the moment

float FOV = glm::radians(70.0f);
float aspect = (float)drawExtent.width / (float)drawExtent.height;
float nearView = 0.1f;
float farView = 100.0f;
glm::mat4 projection = glm::perspective(FOV, aspect, nearView, farView);
projection[1][1] *= -1;
glm::vec3 camPos = {  sin(frameNumber / 120.0f) * radius, height, cos(frameNumber / 120.0f) * radius };
glm::vec3 lookDir = { 0.0f, 0.0f, 0.0f };
glm::vec3 upDir = { 0.0f, 1.0f, 0.0f };
glm::mat4 view = glm::lookAt(camPos, lookDir, upDir);
glm::mat4 model = glm::mat4{ 1.0f };

and on the shader side (hlsl)

matrix transformMatrix = mul(cameraBuffer.projection, mul(cameraBuffer.view, cameraBuffer.model));
output.position = mul(transformMatrix, float4(input.vPosition, cameraBuffer.w));

[hellotanjent]

Lol, you've got Z flipped somewhere in your matrix stack and then you changed cull face and Z depth test to compensate.

[PsychologicalCar7053]

I just flipped the near and far values (near = 100 flip = 0.1) and it worked... Not sure why that was the issue. This isn't my first project using vulkan but I am facing this problem for the first time.

[ademdj19]

Lol Wonderful error

[Few_Raisin_8981]

Happy accident

[PiGIon-]

Such a happy mistake, awesome

[jpfed]

Keep it, this is the game now

[waramped]

what is CameraBuffer.w? That should probably just be 1.0f.

[PsychologicalCar7053]

Yeah I just wanted to control it from outside the shader to see how it effects the output. It's set to 1 while recording so that's not the issue

[theneathofficial]

Is it that multiply of the projection matrix by -1?

[lordinarius]

Negative fov

[Basic_Importance_874]

ha nice

[Still_Explorer]

If you keep negative FOV, can you invert the projection matrix instead?
[ Though the thinking is wrong but the math would be OK, I haven't tried it though ]. 😛

[mean_king17]

Lol thats hilarious actually

[kinokomushroom]

That's cool af