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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2022 NVIDIA Corporation
* Copyright 2022 Blender Foundation */
#include "hydra/output_driver.h"
#include "hydra/render_buffer.h"
#include "hydra/session.h"
HDCYCLES_NAMESPACE_OPEN_SCOPE
HdCyclesOutputDriver::HdCyclesOutputDriver(HdCyclesSession *renderParam)
: _renderParam(renderParam)
{
}
void HdCyclesOutputDriver::write_render_tile(const Tile &tile)
{
update_render_tile(tile);
// Update convergence state of all render buffers
for (const HdRenderPassAovBinding &aovBinding : _renderParam->GetAovBindings()) {
if (const auto renderBuffer = static_cast<HdCyclesRenderBuffer *>(aovBinding.renderBuffer)) {
renderBuffer->SetConverged(true);
}
}
}
bool HdCyclesOutputDriver::update_render_tile(const Tile &tile)
{
std::vector<float> pixels;
for (const HdRenderPassAovBinding &aovBinding : _renderParam->GetAovBindings()) {
if (aovBinding == _renderParam->GetDisplayAovBinding()) {
continue; // Display AOV binding is already updated by Cycles display driver
}
if (const auto renderBuffer = static_cast<HdCyclesRenderBuffer *>(aovBinding.renderBuffer)) {
const HdFormat format = renderBuffer->GetFormat();
if (format == HdFormatInvalid) {
continue; // Skip invalid AOV bindings
}
const size_t channels = HdGetComponentCount(format);
// Avoid extra copy by mapping render buffer directly when dimensions/format match the tile
if (tile.offset.x == 0 && tile.offset.y == 0 && tile.size.x == renderBuffer->GetWidth() &&
tile.size.y == renderBuffer->GetHeight() &&
(format >= HdFormatFloat32 && format <= HdFormatFloat32Vec4)) {
float *const data = static_cast<float *>(renderBuffer->Map());
TF_VERIFY(tile.get_pass_pixels(aovBinding.aovName.GetString(), channels, data));
renderBuffer->Unmap();
}
else {
pixels.resize(channels * tile.size.x * tile.size.y);
if (tile.get_pass_pixels(aovBinding.aovName.GetString(), channels, pixels.data())) {
const bool isId = aovBinding.aovName == HdAovTokens->primId ||
aovBinding.aovName == HdAovTokens->elementId ||
aovBinding.aovName == HdAovTokens->instanceId;
renderBuffer->WritePixels(pixels.data(),
GfVec2i(tile.offset.x, tile.offset.y),
GfVec2i(tile.size.x, tile.size.y),
channels,
isId);
}
else {
// Do not warn on missing elementId, which is a standard AOV but is not implememted
if (aovBinding.aovName != HdAovTokens->elementId) {
TF_RUNTIME_ERROR("Could not find pass for AOV '%s'", aovBinding.aovName.GetText());
}
}
}
}
}
return true;
}
HDCYCLES_NAMESPACE_CLOSE_SCOPE
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