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GPU buffer materials:

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Separate and reuse some shared code.

Also avoid counting for information we already know,
such as total loop triangles etc.
This commit is contained in:
Antonis Ryakiotakis
2015-07-25 13:17:37 +02:00
parent 38e19536bf
commit 50a46a5973
4 changed files with 51 additions and 79 deletions
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30
source/blender/gpu/intern/gpu_buffers.c
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@@ -114,6 +114,36 @@ static int mres_prev_gridsize = -1;
static GLenum mres_prev_index_type = 0;
static unsigned mres_prev_totquad = 0;
void GPU_buffer_material_finalize(GPUDrawObject *gdo, GPUBufferMaterial *matinfo, int totmat)
{
int i, curmat, curelement;
/* count the number of materials used by this DerivedMesh */
for (i = 0; i < totmat; i++) {
if (matinfo[i].totelements > 0)
gdo->totmaterial++;
}
/* allocate an array of materials used by this DerivedMesh */
gdo->materials = MEM_mallocN(sizeof(GPUBufferMaterial) * gdo->totmaterial,
"GPUDrawObject.materials");
/* initialize the materials array */
for (i = 0, curmat = 0, curelement = 0; i < totmat; i++) {
if (matinfo[i].totelements > 0) {
gdo->materials[curmat] = matinfo[i];
gdo->materials[curmat].start = curelement;
gdo->materials[curmat].mat_nr = i;
gdo->materials[curmat].polys = MEM_mallocN(sizeof(int) * matinfo[i].totpolys, "GPUBufferMaterial.polys");
curelement += matinfo[i].totelements;
curmat++;
}
}
MEM_freeN(matinfo);
}
/* stores recently-deleted buffers so that new buffers won't have to
* be recreated as often