void SAssPiece::BindVertexAttribVBOs() const
{
vboAttributes.Bind(GL_ARRAY_BUFFER);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, pos)));
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, normal)));
// primary and secondary texture use first UV channel
for (unsigned int n = 0; n < NUM_MODEL_TEXTURES; n++) {
glClientActiveTexture(GL_TEXTURE0 + n);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, texCoords) + (0 * sizeof(float2))));
}
// extra UV channels (currently at most one)
for (unsigned int n = 1; n < GetNumTexCoorChannels(); n++) {
assert((GL_TEXTURE0 + NUM_MODEL_TEXTURES + (n - 1)) < GL_TEXTURE5);
glClientActiveTexture(GL_TEXTURE0 + NUM_MODEL_TEXTURES + (n - 1));
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, texCoords) + (n * sizeof(float2))));
}
glClientActiveTexture(GL_TEXTURE5);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(3, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, sTangent)));
glClientActiveTexture(GL_TEXTURE6);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(3, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, tTangent)));
vboAttributes.Unbind();
}
void SAssPiece::DrawForList() const
{
if (!hasGeometryData)
return;
vboAttributes.Bind(GL_ARRAY_BUFFER);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, pos)));
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, normal)));
// primary and secondary texture use first UV channel
for (unsigned int n = 0; n < NUM_MODEL_TEXTURES; n++) {
glClientActiveTexture(GL_TEXTURE0 + n);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, texCoords) + (0 * sizeof(float2))));
}
// extra UV channels (currently at most one)
for (unsigned int n = 1; n < GetNumTexCoorChannels(); n++) {
glClientActiveTexture(GL_TEXTURE0 + NUM_MODEL_TEXTURES + (n - 1));
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, texCoords) + (n * sizeof(float2))));
}
glClientActiveTexture(GL_TEXTURE5);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(3, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, sTangent)));
glClientActiveTexture(GL_TEXTURE6);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(3, GL_FLOAT, sizeof(SAssVertex), vboAttributes.GetPtr(offsetof(SAssVertex, tTangent)));
vboAttributes.Unbind();
vboIndices.Bind(GL_ELEMENT_ARRAY_BUFFER);
/*
* since aiProcess_SortByPType is being used,
* we're sure we'll get only 1 type here,
* so combination check isn't needed, also
* anything more complex than triangles is
* being split thanks to aiProcess_Triangulate
*/
glDrawRangeElements(GL_TRIANGLES, 0, vertices.size() - 1, vertexDrawIndices.size(), GL_UNSIGNED_INT, vboIndices.GetPtr());
vboIndices.Unbind();
glClientActiveTexture(GL_TEXTURE6);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glClientActiveTexture(GL_TEXTURE5);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glClientActiveTexture(GL_TEXTURE2);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glClientActiveTexture(GL_TEXTURE1);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glClientActiveTexture(GL_TEXTURE0);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
}