From 84dfe6a4cf6ab18c8e7d7c2701a93eae5c28dbc0 Mon Sep 17 00:00:00 2001 From: TheLazyIndianTechie Date: Sat, 27 Dec 2025 18:52:24 +0530 Subject: [PATCH] [rmodels] Fix glTF animation framerate calculation (#4472) (#5445) - Changed GLTF_ANIMDELAY (17ms, ~58.82fps) to GLTF_FRAMERATE (60.0fps) - Updated frameCount calculation: (animDuration * 60) instead of (animDuration * 1000 / 17) - Updated time calculation: j / 60.0f instead of (j * 17) / 1000.0f This fixes animation frame count misalignment when importing glTF models exported at standard 60fps. Animations that were 27+ frames shorter than expected on 1350-frame sequences will now import correctly. --- src/rmodels.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/rmodels.c b/src/rmodels.c index 40af4afc4..665b94147 100644 --- a/src/rmodels.c +++ b/src/rmodels.c @@ -6353,7 +6353,7 @@ static bool GetPoseAtTimeGLTF(cgltf_interpolation_type interpolationType, cgltf_ return true; } -#define GLTF_ANIMDELAY 17 // Animation frames delay, (~1000 ms/60 FPS = 16.666666* ms) +#define GLTF_FRAMERATE 60.0f // glTF animation framerate (frames per second) static ModelAnimation *LoadModelAnimationsGLTF(const char *fileName, int *animCount) { @@ -6473,13 +6473,13 @@ static ModelAnimation *LoadModelAnimationsGLTF(const char *fileName, int *animCo if (animData.name != NULL) strncpy(animations[i].name, animData.name, sizeof(animations[i].name) - 1); - animations[i].frameCount = (int)(animDuration*1000.0f/GLTF_ANIMDELAY) + 1; + animations[i].frameCount = (int)(animDuration*GLTF_FRAMERATE) + 1; animations[i].framePoses = (Transform **)RL_MALLOC(animations[i].frameCount*sizeof(Transform *)); for (int j = 0; j < animations[i].frameCount; j++) { animations[i].framePoses[j] = (Transform *)RL_MALLOC(animations[i].boneCount*sizeof(Transform)); - float time = ((float) j*GLTF_ANIMDELAY)/1000.0f; + float time = (float)j / GLTF_FRAMERATE; for (int k = 0; k < animations[i].boneCount; k++) {