db991d8ac0
Currently, during baking each pixel stores a seed input that comes from the Blender side. This is only needed for vertex color baking, however - for regular image baking, we can just as well hash the pixel coordinates. Therefore, we can save some memory (4 byte per pixel) by splitting the seed info out into a separate pass and only storing it when needed. Pull Request: https://projects.blender.org/blender/blender/pulls/122806
71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
/* SPDX-FileCopyrightText: 2021-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#pragma once
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#include "util/math.h"
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#include "util/string.h"
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#include "util/types.h"
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CCL_NAMESPACE_BEGIN
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/* Output driver for reading render buffers.
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*
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* Host applications implement this interface for outputting render buffers for offline rendering.
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* Drivers can be used to copy the buffers into the host application or write them directly to
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* disk. This interface may also be used for interactive display, however the DisplayDriver is more
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* efficient for that purpose.
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*/
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class OutputDriver {
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public:
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OutputDriver() = default;
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virtual ~OutputDriver() = default;
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class Tile {
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public:
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Tile(const int2 offset,
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const int2 size,
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const int2 full_size,
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const string_view layer,
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const string_view view)
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: offset(offset), size(size), full_size(full_size), layer(layer), view(view)
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{
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}
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virtual ~Tile() = default;
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const int2 offset;
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const int2 size;
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const int2 full_size;
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const string layer;
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const string view;
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virtual bool get_pass_pixels(const string_view pass_name,
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const int num_channels,
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float *pixels) const = 0;
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virtual bool set_pass_pixels(const string_view pass_name,
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const int num_channels,
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const float *pixels) const = 0;
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};
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/* Write tile once it has finished rendering. */
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virtual void write_render_tile(const Tile &tile) = 0;
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/* Update tile while rendering is in progress. Return true if any update
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* was performed. */
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virtual bool update_render_tile(const Tile & /* tile */)
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{
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return false;
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}
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/* For baking, read render pass PASS_BAKE_PRIMITIVE/SEED/DIFFERENTIAL
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* to determine which shading points to use for baking at each pixel. Return
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* true if any data was read. */
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virtual bool read_render_tile(const Tile & /* tile */)
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{
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return false;
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}
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};
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CCL_NAMESPACE_END
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