509090e7c3
Similar to 5e46e3d28a.
This commit replaces the C-API version of `OpenSubdiv_Evaluator`
with direct calls to `EvalOutputAPI`. This removes a level of indirection,
theoretically reducing function call overhead, but also making the whole
system easier to understand and easier to modify. The downside is
further spread of `WITH_OPENSUBDIV` into the code, but I think that
can be improved in the future relatively easily once more of this sort
of change is finished.
Pull Request: https://projects.blender.org/blender/blender/pulls/128278
66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
/* SPDX-FileCopyrightText: 2013 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include <cstdint> // for uint64_t
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#include "opensubdiv_capi_type.hh"
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struct OpenSubdiv_EvaluatorCacheImpl;
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struct OpenSubdiv_PatchCoord;
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namespace blender::opensubdiv {
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class TopologyRefinerImpl;
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}
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struct OpenSubdiv_EvaluatorSettings {
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// Number of smoothly interpolated vertex data channels.
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int num_vertex_data;
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};
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// Callback type for doing input/output operations on buffers.
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// Useful to abstract GPU buffers.
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struct OpenSubdiv_Buffer {
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// Bind the buffer to the GPU.
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void (*bind_gpu)(const OpenSubdiv_Buffer *buffer);
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// Allocate the buffer directly on the host for the given size in bytes. This has to return
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// a pointer to the newly allocated memory.
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void *(*alloc)(const OpenSubdiv_Buffer *buffer, const unsigned int size);
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// Allocate the buffer directly on the device for the given size in bytes.
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void (*device_alloc)(const OpenSubdiv_Buffer *buffer, const unsigned int size);
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// Update the given range of the buffer with new data.
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void (*device_update)(const OpenSubdiv_Buffer *buffer,
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unsigned int start,
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unsigned int len,
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const void *data);
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// Wrap an existing GPU buffer, given its device handle, into the client's buffer type for
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// read-only use.
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void (*wrap_device_handle)(const OpenSubdiv_Buffer *buffer, uint64_t device_ptr);
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// Offset in the buffer where the data starts, if a single buffer is used for multiple data
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// channels.
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int buffer_offset;
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// Pointer to the client buffer data, which is modified or initialized through the various
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// callbacks.
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void *data;
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};
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struct OpenSubdiv_EvaluatorCache {
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// Implementation of the evaluator cache.
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OpenSubdiv_EvaluatorCacheImpl *impl;
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};
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OpenSubdiv_EvaluatorCache *openSubdiv_createEvaluatorCache(eOpenSubdivEvaluator evaluator_type);
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void openSubdiv_deleteEvaluatorCache(OpenSubdiv_EvaluatorCache *evaluator_cache);
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// Return the GLSL source code from the OpenSubDiv library used for patch evaluation.
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// This function is not thread-safe.
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const char *openSubdiv_getGLSLPatchBasisSource();
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