0579eaae1f
The idea is to make include statements more explicit and obvious where the file is coming from, additionally reducing chance of wrong header being picked up. For example, it was not obvious whether bvh.h was refferring to builder or traversal, whenter node.h is a generic graph node or a shader node and cases like that. Surely this might look obvious for the active developers, but after some time of not touching the code it becomes less obvious where file is coming from. This was briefly mentioned in T50824 and seems @brecht is fine with such explicitness, but need to agree with all active developers before committing this. Please note that this patch is lacking changes related on GPU/OpenCL support. This will be solved if/when we all agree this is a good idea to move forward. Reviewers: brecht, lukasstockner97, maiself, nirved, dingto, juicyfruit, swerner Reviewed By: lukasstockner97, maiself, nirved, dingto Subscribers: brecht Differential Revision: https://developer.blender.org/D2586
139 lines
3.1 KiB
C++
139 lines
3.1 KiB
C++
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __SUBD_DICE_H__
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#define __SUBD_DICE_H__
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/* DX11 like EdgeDice implementation, with different tessellation factors for
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* each edge for watertight tessellation, with subpatch remapping to work with
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* DiagSplit. For more algorithm details, see the DiagSplit paper or the
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* ARB_tessellation_shader OpenGL extension, Section 2.X.2. */
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#include "util/util_types.h"
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#include "util/util_vector.h"
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CCL_NAMESPACE_BEGIN
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class Camera;
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class Mesh;
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class Patch;
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struct SubdParams {
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Mesh *mesh;
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bool ptex;
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int test_steps;
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int split_threshold;
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float dicing_rate;
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int max_level;
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Camera *camera;
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Transform objecttoworld;
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SubdParams(Mesh *mesh_, bool ptex_ = false)
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{
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mesh = mesh_;
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ptex = ptex_;
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test_steps = 3;
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split_threshold = 1;
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dicing_rate = 1.0f;
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max_level = 12;
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camera = NULL;
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}
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};
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/* EdgeDice Base */
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class EdgeDice {
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public:
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SubdParams params;
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float3 *mesh_P;
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float3 *mesh_N;
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size_t vert_offset;
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size_t tri_offset;
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explicit EdgeDice(const SubdParams& params);
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void reserve(int num_verts);
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int add_vert(Patch *patch, float2 uv);
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void add_triangle(Patch *patch, int v0, int v1, int v2);
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void stitch_triangles(Patch *patch, vector<int>& outer, vector<int>& inner);
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};
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/* Quad EdgeDice
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*
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* Edge tessellation factors and subpatch coordinates are as follows:
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*
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* tu1
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* P01 --------- P11
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* | |
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* tv0 | | tv1
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* | |
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* P00 --------- P10
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* tu0
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*/
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class QuadDice : public EdgeDice {
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public:
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struct SubPatch {
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Patch *patch;
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float2 P00;
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float2 P10;
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float2 P01;
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float2 P11;
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};
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struct EdgeFactors {
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int tu0;
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int tu1;
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int tv0;
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int tv1;
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};
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explicit QuadDice(const SubdParams& params);
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void reserve(EdgeFactors& ef, int Mu, int Mv);
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float3 eval_projected(SubPatch& sub, float u, float v);
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float2 map_uv(SubPatch& sub, float u, float v);
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int add_vert(SubPatch& sub, float u, float v);
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void add_corners(SubPatch& sub);
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void add_grid(SubPatch& sub, int Mu, int Mv, int offset);
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void add_side_u(SubPatch& sub,
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vector<int>& outer, vector<int>& inner,
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int Mu, int Mv, int tu, int side, int offset);
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void add_side_v(SubPatch& sub,
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vector<int>& outer, vector<int>& inner,
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int Mu, int Mv, int tv, int side, int offset);
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float quad_area(const float3& a, const float3& b, const float3& c, const float3& d);
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float scale_factor(SubPatch& sub, EdgeFactors& ef, int Mu, int Mv);
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void dice(SubPatch& sub, EdgeFactors& ef);
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};
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CCL_NAMESPACE_END
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#endif /* __SUBD_DICE_H__ */
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