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Work on character rendering and frustrum culling etc

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Kelsi 2026-02-22 05:58:45 -08:00
parent fc5294eb0f
commit 7dd1dada5f
16 changed files with 559 additions and 138 deletions
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9
src/rendering/camera.cpp
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@ -42,12 +42,15 @@ glm::vec3 Camera::getUp() const {
Ray Camera::screenToWorldRay(float screenX, float screenY, float screenW, float screenH) const {
float ndcX = (2.0f * screenX / screenW) - 1.0f;
float ndcY = 1.0f - (2.0f * screenY / screenH);
// Vulkan Y-flip is baked into projectionMatrix, so NDC Y maps directly:
// screen top (y=0) → NDC -1, screen bottom (y=H) → NDC +1
float ndcY = (2.0f * screenY / screenH) - 1.0f;
glm::mat4 invVP = glm::inverse(projectionMatrix * viewMatrix);
glm::vec4 nearPt = invVP * glm::vec4(ndcX, ndcY, -1.0f, 1.0f);
glm::vec4 farPt = invVP * glm::vec4(ndcX, ndcY, 1.0f, 1.0f);
// Vulkan / GLM_FORCE_DEPTH_ZERO_TO_ONE: NDC z ∈ [0, 1]
glm::vec4 nearPt = invVP * glm::vec4(ndcX, ndcY, 0.0f, 1.0f);
glm::vec4 farPt = invVP * glm::vec4(ndcX, ndcY, 1.0f, 1.0f);
nearPt /= nearPt.w;
farPt /= farPt.w;