MrMonopoly/raylib
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add support for 8 bit normals

Browse Source
This commit is contained in:
Jeffery Myers 2025-12-05 15:52:32 -08:00
parent 610015bd5a
commit baedbf83f1
1 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
src/rmodels.c
View File

@ -5680,6 +5680,54 @@ static Model LoadGLTF(const char *fileName)
normals[3 * k + 2] = nt.z; normals[3 * k + 2] = nt.z;
} }
} }
else if ((attribute->type == cgltf_type_vec3) && (attribute->component_type == cgltf_component_type_r_8u))
{
// Init raylib mesh normals to copy glTF attribute data
model.meshes[meshIndex].normals = (float*)RL_MALLOC(attribute->count * 3 * sizeof(float));
// Load data into a temp buffer to be converted to raylib data type
unsigned char* temp = (unsigned char*)RL_MALLOC(attribute->count * 3 * sizeof(unsigned char));
LOAD_ATTRIBUTE(attribute, 3, unsigned char, temp);
// Convert data to raylib normal data type (float)
for (unsigned int t = 0; t < attribute->count * 3; t++) model.meshes[meshIndex].normals[t] = (float)temp[t];
RL_FREE(temp);
// Transform the normals
float* normals = model.meshes[meshIndex].normals;
for (unsigned int k = 0; k < attribute->count; k++)
{
Vector3 nt = Vector3Normalize(Vector3Transform((Vector3) { normals[3 * k], normals[3 * k + 1], normals[3 * k + 2] }, worldMatrixNormals));
normals[3 * k] = nt.x;
normals[3 * k + 1] = nt.y;
normals[3 * k + 2] = nt.z;
}
}
else if ((attribute->type == cgltf_type_vec3) && (attribute->component_type == cgltf_component_type_r_8))
{
// Init raylib mesh normals to copy glTF attribute data
model.meshes[meshIndex].normals = (float*)RL_MALLOC(attribute->count * 3 * sizeof(float));
// Load data into a temp buffer to be converted to raylib data type
char* temp = (char*)RL_MALLOC(attribute->count * 3 * sizeof(char));
LOAD_ATTRIBUTE(attribute, 3, char, temp);
// Convert data to raylib normal data type (float)
for (unsigned int t = 0; t < attribute->count * 3; t++) model.meshes[meshIndex].normals[t] = (float)temp[t];
RL_FREE(temp);
// Transform the normals
float* normals = model.meshes[meshIndex].normals;
for (unsigned int k = 0; k < attribute->count; k++)
{
Vector3 nt = Vector3Normalize(Vector3Transform((Vector3) { normals[3 * k], normals[3 * k + 1], normals[3 * k + 2] }, worldMatrixNormals));
normals[3 * k] = nt.x;
normals[3 * k + 1] = nt.y;
normals[3 * k + 2] = nt.z;
}
}
else TRACELOG(LOG_WARNING, "MODEL: [%s] Normals attribute data format not supported, use vec3 float", fileName); else TRACELOG(LOG_WARNING, "MODEL: [%s] Normals attribute data format not supported, use vec3 float", fileName);
} }
} }