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Fixed iterating bug with initializing mesh batches

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This commit is contained in:
_ 2018-04-13 14:56:14 -07:00
parent d38926b86a
commit 4df1024a55
3 changed files with 46 additions and 48 deletions
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34
include/devil1geo.h
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@ -23,11 +23,7 @@ struct MeshHeader {
uint64_t flags; uint64_t flags;
}; // put these in an array of size: [header.numMesh] }; // put these in an array of size: [header.numMesh]
struct Positions { struct Coordinate {
float x, y, z;
};
struct Normals {
float x, y, z; float x, y, z;
}; };
@ -43,10 +39,7 @@ struct BoneWeights {
uint16_t weights; // <format=hex> uint16_t weights; // <format=hex>
}; };
struct BatchData {
// This is where most of the parsing will be.
// this struct is in-order of what the file format will have.
struct Batch {
int16_t numVertex; int16_t numVertex;
int16_t uB; int16_t uB;
uint32_t padding; // <format=hex> uint32_t padding; // <format=hex>
@ -56,16 +49,27 @@ struct Batch {
uint64_t offsetBoneIndexes; // <format=hex> uint64_t offsetBoneIndexes; // <format=hex>
uint64_t offsetBoneWeights; // <format=hex> uint64_t offsetBoneWeights; // <format=hex>
uint64_t offsets[1]; // <format=hex> uint64_t offsets[1]; // <format=hex>
};
struct VertexData {
// following structs should in an array of size numVertex // following structs should in an array of size numVertex
struct Positions *p; struct Coordinate *positions;
struct Normals *n; struct Coordinate *normals;
struct UVs *u; struct UVs *u;
struct BoneIndexes *bi; struct BoneIndexes *bi;
struct BoneWeights *bw; struct BoneWeights *bw;
}; };
// This is where most of the parsing will be.
// this struct is in-order of what the file format will have.
struct Batch {
struct BatchData *bd;
struct VertexData vd;
};
struct Mesh { struct Mesh {
struct Batch b; // may contain multiple batches
struct Batch *b;
}; };
#pragma pack(pop) #pragma pack(pop)
@ -76,15 +80,13 @@ void printmeshheader(struct MeshHeader*);
void printmeshbatch(struct Batch*); void printmeshbatch(struct Batch*);
void printpositions(struct Positions*, unsigned int); void printcoordinate(struct Coordinate*, unsigned int);
void printnormals(struct Normals*, unsigned int);
// ** = 'pass by reference' of a pointer to struct // ** = 'pass by reference' of a pointer to struct
bool getmeshheader(struct MeshHeader**, unsigned int i, const char * const); bool getmeshheader(struct MeshHeader**, unsigned int i, const char * const);
// ** = 'pass by reference' of a pointer to struct // ** = 'pass by reference' of a pointer to struct
bool getmeshbatch(struct Batch**, bool getmeshbatch(struct Batch*,
struct MeshHeader*, struct MeshHeader*,
const char * const); const char * const);

50
src/devil1geo.c
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@ -28,18 +28,20 @@ void printmeshbatch(struct Batch *b) {
if (b == NULL) { if (b == NULL) {
return; return;
} }
printf("number of vertices %x\n", b -> numVertex); struct BatchData *bd = b -> bd;
printf("unknown byte %x\n", b -> uB); printf("number of vertices %x\n", bd -> numVertex);
printf("padding %x\n", b -> padding); printf("unknown byte %x\n", bd -> uB);
printf("offsetPositions %x\n", b -> offsetPositions); printf("padding %x\n", bd -> padding);
printf("offsetNormals %x\n", b -> offsetNormals); printf("offsetPositions %x\n", bd -> offsetPositions);
printf("offsetUVs %x\n", b -> offsetUVs); printf("offsetNormals %x\n", bd -> offsetNormals);
printf("offsetBoneIndexes %x\n", b -> offsetBoneIndexes); printf("offsetUVs %x\n", bd -> offsetUVs);
printf("offsetBoneWeights %x\n", b -> offsetBoneWeights); printf("offsetBoneIndexes %x\n", bd -> offsetBoneIndexes);
printf("offsets %x\n\n", b -> offsets[0]); printf("offsetBoneWeights %x\n", bd -> offsetBoneWeights);
printf("offsets %x\n\n", bd -> offsets[0]);
printcoordinate(b -> vd.positions, 3);
} }
void printpositions(struct Positions *p, unsigned int count) { void printcoordinate(struct Coordinate *p, unsigned int count) {
if (p == NULL) { if (p == NULL) {
return; return;
} }
@ -49,16 +51,6 @@ void printpositions(struct Positions *p, unsigned int count) {
} }
} }
void printnormals(struct Normals *n, unsigned int count) {
if (n == NULL) {
return;
}
unsigned int i;
for (i = 0; i < count; i++) {
printf("(%f, %f, %f)\n", (n[i]).x, (n[i]).y, (n[i]).z);
}
}
bool getmeshheader(struct MeshHeader **hs, bool getmeshheader(struct MeshHeader **hs,
unsigned int i, unsigned int i,
const char * const filedata) { const char * const filedata) {
@ -76,7 +68,7 @@ bool getmeshheader(struct MeshHeader **hs,
return done; return done;
} }
bool getmeshbatch(struct Batch **b, bool getmeshbatch(struct Batch *b,
struct MeshHeader *h, struct MeshHeader *h,
const char * const filedata) { const char * const filedata) {
bool done = false; bool done = false;
@ -84,12 +76,16 @@ bool getmeshbatch(struct Batch **b,
return done; return done;
} }
unsigned int offset = h -> offsetBatches; unsigned int offset = h -> offsetBatches;
*b = (struct Batch*)(filedata + offset); struct BatchData *d1 = NULL;
(*b) -> p = (struct Positions*)(filedata + ((*b) -> offsetPositions)); struct VertexData d2;
(*b) -> n = (struct Normals*)(filedata + ((*b) -> offsetNormals)); d1 = (struct BatchData*) (filedata + offset);
(*b) -> u = (struct UVs*)(filedata + ((*b) -> offsetUVs)); d2.positions = (struct Coordinate*) (filedata + (d1 -> offsetPositions));
(*b) -> bi = (struct BoneIndexes*)(filedata + ((*b) -> offsetBoneIndexes)); d2.normals = (struct Coordinate*) (filedata + (d1 -> offsetNormals));
(*b) -> bw = (struct BoneWeights*)(filedata + ((*b) -> offsetBoneWeights)); d2.u = (struct UVs*) (filedata + (d1 -> offsetUVs));
d2.bi = (struct BoneIndexes*)(filedata + (d1 -> offsetBoneIndexes));
d2.bw = (struct BoneWeights*)(filedata + (d1 -> offsetBoneWeights));
b -> bd = d1;
b -> vd = d2;
done = true; done = true;
return done; return done;
} }

10
test/main.c
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@ -113,18 +113,18 @@ void extractmeshes(const char *filedata,
} }
struct Header *h = (struct Header*)filedata; struct Header *h = (struct Header*)filedata;
struct MeshHeader *mh = NULL; struct MeshHeader *mh = NULL;
struct Batch *b = NULL; struct Batch b;
unsigned int i; unsigned int i;
unsigned int j; unsigned int j;
bool ok; bool ok;
//h -> numMesh //h -> numMesh
for (i = 0; i < 2; i++) { for (i = 0; i < h -> numMesh; i++) {
ok = getmeshheader(&mh, i, filedata); ok = getmeshheader(&mh, i, filedata);
if (ok) { if (ok) {
for (j = 0; j < mh -> numBatch; j++) { // for (j = 0; j < mh -> numBatch; j++) {
getmeshbatch(&b, mh, filedata); getmeshbatch(&b, mh, filedata);
printmeshbatch(b); printmeshbatch(&b);
} // end for // } // end for
} // end if } // end if
} // end for } // end for
} }