diff options
| author | Dan Goodliffe <dan@randomdan.homeip.net> | 2022-12-11 14:28:46 +0000 |
|---|---|---|
| committer | Dan Goodliffe <dan.goodliffe@octal.co.uk> | 2022-12-12 09:21:50 +0000 |
| commit | bb76f72831af73adb1b2deebd4b9235fa51fa7df (patch) | |
| tree | 97e8ba1bedb42642366262c66b6170adf8d2d1b8 /gfx/gl/camera.cpp | |
| parent | Have Camera remember all its properties (diff) | |
| download | ilt-bb76f72831af73adb1b2deebd4b9235fa51fa7df.tar.bz2 ilt-bb76f72831af73adb1b2deebd4b9235fa51fa7df.tar.xz ilt-bb76f72831af73adb1b2deebd4b9235fa51fa7df.zip | |
Cache view and viewProject matrices, update only on camera movement
Diffstat (limited to 'gfx/gl/camera.cpp')
| -rw-r--r-- | gfx/gl/camera.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/gfx/gl/camera.cpp b/gfx/gl/camera.cpp index 1c46200..994d8ab 100644 --- a/gfx/gl/camera.cpp +++ b/gfx/gl/camera.cpp @@ -7,12 +7,7 @@ Camera::Camera(glm::vec3 pos, float fov, float aspect, float zNear, float zFar) position {pos}, forward {::north}, up {::up}, fov {fov}, aspect {aspect}, near {zNear}, far {zFar}, projection {glm::perspective(fov, aspect, zNear, zFar)} { -} - -glm::mat4 -Camera::getViewProjection() const -{ - return projection * glm::lookAt(position, position + forward, up); + updateView(); } Ray @@ -22,3 +17,10 @@ Camera::unProject(const glm::vec2 & mouse) const return {position, glm::normalize(glm::unProject(mouse ^ 1, glm::lookAt(::origin, forward, up), projection, screen))}; } + +void +Camera::updateView() +{ + view = glm::lookAt(position, position + forward, up); + viewProjection = projection * view; +} |