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Diffstat (limited to '')
| -rw-r--r-- | src/d3d11/gpu_buf.c | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/src/d3d11/gpu_buf.c b/src/d3d11/gpu_buf.c new file mode 100644 index 0000000..955e6e1 --- /dev/null +++ b/src/d3d11/gpu_buf.c @@ -0,0 +1,310 @@ +/* + * This file is part of libplacebo. + * + * libplacebo is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * libplacebo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with libplacebo. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "gpu.h" +#include "formats.h" + +void pl_d3d11_buf_destroy(pl_gpu gpu, pl_buf buf) +{ + struct pl_gpu_d3d11 *p = PL_PRIV(gpu); + struct d3d11_ctx *ctx = p->ctx; + struct pl_buf_d3d11 *buf_p = PL_PRIV(buf); + + SAFE_RELEASE(buf_p->buf); + SAFE_RELEASE(buf_p->staging); + SAFE_RELEASE(buf_p->raw_srv); + SAFE_RELEASE(buf_p->raw_uav); + SAFE_RELEASE(buf_p->texel_srv); + SAFE_RELEASE(buf_p->texel_uav); + + pl_d3d11_flush_message_queue(ctx, "After buffer destroy"); + + pl_free((void *) buf); +} + +pl_buf pl_d3d11_buf_create(pl_gpu gpu, const struct pl_buf_params *params) +{ + struct pl_gpu_d3d11 *p = PL_PRIV(gpu); + struct d3d11_ctx *ctx = p->ctx; + + struct pl_buf_t *buf = pl_zalloc_obj(NULL, buf, struct pl_buf_d3d11); + buf->params = *params; + buf->params.initial_data = NULL; + + struct pl_buf_d3d11 *buf_p = PL_PRIV(buf); + + D3D11_BUFFER_DESC desc = { .ByteWidth = params->size }; + + if (params->uniform && !params->format && + (params->storable || params->drawable)) + { + // TODO: Figure out what to do with these + PL_ERR(gpu, "Uniform buffers cannot share any other buffer type"); + goto error; + } + + // TODO: Distinguish between uniform buffers and texel uniform buffers. + // Currently we assume that if uniform and format are set, it's a texel + // buffer and NOT a uniform buffer. + if (params->uniform && !params->format) { + desc.BindFlags |= D3D11_BIND_CONSTANT_BUFFER; + desc.ByteWidth = PL_ALIGN2(desc.ByteWidth, CBUF_ELEM); + } + if (params->uniform && params->format) { + desc.BindFlags |= D3D11_BIND_SHADER_RESOURCE; + } + if (params->storable) { + desc.BindFlags |= D3D11_BIND_UNORDERED_ACCESS + | D3D11_BIND_SHADER_RESOURCE; + desc.ByteWidth = PL_ALIGN2(desc.ByteWidth, sizeof(float)); + desc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_ALLOW_RAW_VIEWS; + } + if (params->drawable) { + desc.BindFlags |= D3D11_BIND_VERTEX_BUFFER; + + // In FL9_x, a vertex buffer can't also be an index buffer, so index + // buffers are unsupported in FL9_x for now + if (p->fl > D3D_FEATURE_LEVEL_9_3) + desc.BindFlags |= D3D11_BIND_INDEX_BUFFER; + } + + char *data = NULL; + + // D3D11 doesn't allow partial constant buffer updates without special + // conditions. To support partial buffer updates, keep a mirror of the + // buffer data in system memory and upload the whole thing before the buffer + // is used. + // + // Note: We don't use a staging buffer for this because of Intel. + // https://github.com/mpv-player/mpv/issues/5293 + // https://crbug.com/593024 + if (params->uniform && !params->format && params->host_writable) { + data = pl_zalloc(buf, desc.ByteWidth); + buf_p->data = data; + } + + D3D11_SUBRESOURCE_DATA srdata = { 0 }; + if (params->initial_data) { + if (desc.ByteWidth != params->size) { + // If the size had to be rounded-up, uploading from + // params->initial_data is technically undefined behavior, so copy + // the initial data to an allocation first + if (!data) + data = pl_zalloc(buf, desc.ByteWidth); + srdata.pSysMem = data; + } else { + srdata.pSysMem = params->initial_data; + } + + if (data) + memcpy(data, params->initial_data, params->size); + } + + D3D(ID3D11Device_CreateBuffer(p->dev, &desc, + params->initial_data ? &srdata : NULL, + &buf_p->buf)); + + if (!buf_p->data) + pl_free(data); + + // Create raw views for PL_DESC_BUF_STORAGE + if (params->storable) { + // A SRV is used for PL_DESC_ACCESS_READONLY + D3D11_SHADER_RESOURCE_VIEW_DESC sdesc = { + .Format = DXGI_FORMAT_R32_TYPELESS, + .ViewDimension = D3D11_SRV_DIMENSION_BUFFEREX, + .BufferEx = { + .NumElements = + PL_ALIGN2(buf->params.size, sizeof(float)) / sizeof(float), + .Flags = D3D11_BUFFEREX_SRV_FLAG_RAW, + }, + }; + D3D(ID3D11Device_CreateShaderResourceView(p->dev, + (ID3D11Resource *) buf_p->buf, &sdesc, &buf_p->raw_srv)); + + // A UAV is used for all other access modes + D3D11_UNORDERED_ACCESS_VIEW_DESC udesc = { + .Format = DXGI_FORMAT_R32_TYPELESS, + .ViewDimension = D3D11_UAV_DIMENSION_BUFFER, + .Buffer = { + .NumElements = + PL_ALIGN2(buf->params.size, sizeof(float)) / sizeof(float), + .Flags = D3D11_BUFFER_UAV_FLAG_RAW, + }, + }; + D3D(ID3D11Device_CreateUnorderedAccessView(p->dev, + (ID3D11Resource *) buf_p->buf, &udesc, &buf_p->raw_uav)); + } + + // Create a typed SRV for PL_BUF_TEXEL_UNIFORM and PL_BUF_TEXEL_STORAGE + if (params->format) { + if (params->uniform) { + D3D11_SHADER_RESOURCE_VIEW_DESC sdesc = { + .Format = fmt_to_dxgi(params->format), + .ViewDimension = D3D11_SRV_DIMENSION_BUFFER, + .Buffer = { + .NumElements = + PL_ALIGN(buf->params.size, buf->params.format->texel_size) + / buf->params.format->texel_size, + }, + }; + D3D(ID3D11Device_CreateShaderResourceView(p->dev, + (ID3D11Resource *) buf_p->buf, &sdesc, &buf_p->texel_srv)); + } + + // Create a typed UAV for PL_BUF_TEXEL_STORAGE + if (params->storable) { + D3D11_UNORDERED_ACCESS_VIEW_DESC udesc = { + .Format = fmt_to_dxgi(buf->params.format), + .ViewDimension = D3D11_UAV_DIMENSION_BUFFER, + .Buffer = { + .NumElements = + PL_ALIGN(buf->params.size, buf->params.format->texel_size) + / buf->params.format->texel_size, + }, + }; + D3D(ID3D11Device_CreateUnorderedAccessView(p->dev, + (ID3D11Resource *) buf_p->buf, &udesc, &buf_p->texel_uav)); + } + } + + + if (!buf_p->data) { + // Create the staging buffer regardless of whether params->host_readable + // is set or not, so that buf_copy can copy to system-memory-backed + // buffers + // TODO: Consider sharing a big staging buffer for this, rather than + // having one staging buffer per buffer + desc.BindFlags = 0; + desc.MiscFlags = 0; + desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ; + desc.Usage = D3D11_USAGE_STAGING; + D3D(ID3D11Device_CreateBuffer(p->dev, &desc, NULL, &buf_p->staging)); + } + + pl_d3d11_flush_message_queue(ctx, "After buffer create"); + + return buf; + +error: + pl_d3d11_buf_destroy(gpu, buf); + return NULL; +} + +void pl_d3d11_buf_write(pl_gpu gpu, pl_buf buf, size_t offset, const void *data, + size_t size) +{ + struct pl_gpu_d3d11 *p = PL_PRIV(gpu); + struct pl_buf_d3d11 *buf_p = PL_PRIV(buf); + + if (buf_p->data) { + memcpy(buf_p->data + offset, data, size); + buf_p->dirty = true; + } else { + ID3D11DeviceContext_UpdateSubresource(p->imm, + (ID3D11Resource *) buf_p->buf, 0, (&(D3D11_BOX) { + .left = offset, + .top = 0, + .front = 0, + .right = offset + size, + .bottom = 1, + .back = 1, + }), data, 0, 0); + } +} + +void pl_d3d11_buf_resolve(pl_gpu gpu, pl_buf buf) +{ + struct pl_gpu_d3d11 *p = PL_PRIV(gpu); + struct pl_buf_d3d11 *buf_p = PL_PRIV(buf); + + if (!buf_p->data || !buf_p->dirty) + return; + + ID3D11DeviceContext_UpdateSubresource(p->imm, (ID3D11Resource *) buf_p->buf, + 0, NULL, buf_p->data, 0, 0); +} + +bool pl_d3d11_buf_read(pl_gpu gpu, pl_buf buf, size_t offset, void *dest, + size_t size) +{ + struct pl_gpu_d3d11 *p = PL_PRIV(gpu); + struct d3d11_ctx *ctx = p->ctx; + struct pl_buf_d3d11 *buf_p = PL_PRIV(buf); + + // If there is a system-memory mirror of the buffer contents, use it + if (buf_p->data) { + memcpy(dest, buf_p->data + offset, size); + return true; + } + + ID3D11DeviceContext_CopyResource(p->imm, (ID3D11Resource *) buf_p->staging, + (ID3D11Resource *) buf_p->buf); + + D3D11_MAPPED_SUBRESOURCE lock; + D3D(ID3D11DeviceContext_Map(p->imm, (ID3D11Resource *) buf_p->staging, 0, + D3D11_MAP_READ, 0, &lock)); + + char *csrc = lock.pData; + memcpy(dest, csrc + offset, size); + + ID3D11DeviceContext_Unmap(p->imm, (ID3D11Resource *) buf_p->staging, 0); + + pl_d3d11_flush_message_queue(ctx, "After buffer read"); + + return true; + +error: + return false; +} + +void pl_d3d11_buf_copy(pl_gpu gpu, pl_buf dst, size_t dst_offset, pl_buf src, + size_t src_offset, size_t size) +{ + struct pl_gpu_d3d11 *p = PL_PRIV(gpu); + struct d3d11_ctx *ctx = p->ctx; + struct pl_buf_d3d11 *src_p = PL_PRIV(src); + struct pl_buf_d3d11 *dst_p = PL_PRIV(dst); + + // Handle system memory copies in case one or both of the buffers has a + // system memory mirror + if (src_p->data && dst_p->data) { + memcpy(dst_p->data + dst_offset, src_p->data + src_offset, size); + dst_p->dirty = true; + } else if (src_p->data) { + pl_d3d11_buf_write(gpu, dst, dst_offset, src_p->data + src_offset, size); + } else if (dst_p->data) { + if (pl_d3d11_buf_read(gpu, src, src_offset, dst_p->data + dst_offset, size)) { + dst_p->dirty = true; + } else { + PL_ERR(gpu, "Failed to read from GPU during buffer copy"); + } + } else { + ID3D11DeviceContext_CopySubresourceRegion(p->imm, + (ID3D11Resource *) dst_p->buf, 0, dst_offset, 0, 0, + (ID3D11Resource *) src_p->buf, 0, (&(D3D11_BOX) { + .left = src_offset, + .top = 0, + .front = 0, + .right = src_offset + size, + .bottom = 1, + .back = 1, + })); + } + + pl_d3d11_flush_message_queue(ctx, "After buffer copy"); +} |