forked from bartvdbraak/blender
fd25e883e2
Remove prefix of filenames that is the same as the folder name. This used to help when #includes were using individual files, but now they are always relative to the cycles root directory and so the prefixes are redundant. For patches and branches, git merge and rebase should be able to detect the renames and move over code to the right file.
104 lines
2.4 KiB
C++
104 lines
2.4 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/types.h"
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#include "util/vector.h"
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#include "subd/subpatch.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 ¶ms);
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void reserve(int num_verts, int num_triangles);
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void set_vert(Patch *patch, int index, float2 uv);
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void add_triangle(Patch *patch, int v0, int v1, int v2);
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void stitch_triangles(Subpatch &sub, int edge);
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};
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/* Quad EdgeDice */
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class QuadDice : public EdgeDice {
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public:
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explicit QuadDice(const SubdParams ¶ms);
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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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void set_vert(Subpatch &sub, int index, float u, float v);
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void add_grid(Subpatch &sub, int Mu, int Mv, int offset);
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void set_side(Subpatch &sub, int edge);
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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, int Mu, int Mv);
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void dice(Subpatch &sub);
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};
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CCL_NAMESPACE_END
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#endif /* __SUBD_DICE_H__ */
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