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Fix for issue#1809 - Obj with more materials then mesh caused crash

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This commit is contained in:
Jason Penick 2021-08-12 13:06:28 -05:00
parent 3573f8db3a
commit 91bf52547b
1 changed files with 30 additions and 8 deletions
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38
src/models.c
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@ -3370,7 +3370,7 @@ static Model LoadOBJ(const char *fileName)
if (ret != TINYOBJ_SUCCESS) TRACELOG(LOG_WARNING, "MODEL: [%s] Failed to load OBJ data", fileName);
else TRACELOG(LOG_INFO, "MODEL: [%s] OBJ data loaded successfully: %i meshes/%i materials", fileName, meshCount, materialCount);
model.meshCount = materialCount; // TODO: REVIEW!!!
model.meshCount = materialCount;
// Init model materials array
if (materialCount > 0)
@ -3389,7 +3389,7 @@ static Model LoadOBJ(const char *fileName)
model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int));
// Count the faces for each material
int *matFaces = RL_CALLOC(meshCount, sizeof(int));
int *matFaces = RL_CALLOC(materialCount, sizeof(int));
for (unsigned int mi = 0; mi < meshCount; mi++)
{
@ -3434,9 +3434,32 @@ static Model LoadOBJ(const char *fileName)
tinyobj_vertex_index_t idx2 = attrib.faces[3*af + 2];
// Fill vertices buffer (float) using vertex index of the face
for (int v = 0; v < 3; v++) { model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx0.v_idx*3 + v]; } vCount[mm] +=3;
for (int v = 0; v < 3; v++) { model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx1.v_idx*3 + v]; } vCount[mm] +=3;
for (int v = 0; v < 3; v++) { model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx2.v_idx*3 + v]; } vCount[mm] +=3;
for (int v = 0; v < 3; v++)
{
if (mm > model.meshCount)
{
TRACELOG(LOG_ERROR, "mm > meshCount");
}
if ((vCount[mm] + v) > model.meshes[mm].vertexCount * 3)
{
TRACELOG(LOG_ERROR, "vCount > vertexCount");
}
model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx0.v_idx*3 + v];
}
vCount[mm] +=3;
for (int v = 0; v < 3; v++)
{
model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx1.v_idx*3 + v];
}
vCount[mm] +=3;
for (int v = 0; v < 3; v++)
{
model.meshes[mm].vertices[vCount[mm] + v] = attrib.vertices[idx2.v_idx*3 + v];
}
vCount[mm] +=3;
if (attrib.num_texcoords > 0)
{
@ -3467,11 +3490,10 @@ static Model LoadOBJ(const char *fileName)
// NOTE: Uses default shader, which only supports MATERIAL_MAP_DIFFUSE
model.materials[m] = LoadMaterialDefault();
// Get default texture, in case no texture is defined
// NOTE: rlgl default texture is a 1x1 pixel UNCOMPRESSED_R8G8B8A8
model.materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = (Texture2D){ rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 };
model.materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = rlGetTextureDefault(); // Get default texture, in case no texture is defined
if (materials[m].diffuse_texname != NULL) model.materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = LoadTexture(materials[m].diffuse_texname); //char *diffuse_texname; // map_Kd
else model.materials[m].maps[MATERIAL_MAP_DIFFUSE].texture = rlGetTextureDefault();
model.materials[m].maps[MATERIAL_MAP_DIFFUSE].color = (Color){ (unsigned char)(materials[m].diffuse[0]*255.0f), (unsigned char)(materials[m].diffuse[1]*255.0f), (unsigned char)(materials[m].diffuse[2]*255.0f), 255 }; //float diffuse[3];
model.materials[m].maps[MATERIAL_MAP_DIFFUSE].value = 0.0f;