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started implementing copy image to buffer

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yours3lf 2020-05-26 19:58:07 +01:00
parent 81d097bb67
commit 9a3370b129
1 changed files with 72 additions and 1 deletions
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73
driver/copy.c
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@ -1269,7 +1269,78 @@ VKAPI_ATTR void VKAPI_CALL RPIFUNC(vkCmdCopyImageToBuffer)(
const VkBufferImageCopy* pRegions)
{
PROFILESTART(RPIFUNC(vkCmdCopyImageToBuffer));
//TODO
//what if we use smaller batches to copy to LT layout
//so one batch has to be less than 4kb
//with a height of 1 (essentially 1D images)
//we should be getting raster order
//we can't write to more than a width of 2048, so we'll need to
//work with 2048 * 1 * 32bits each batch
_commandBuffer* cmdbuf = commandBuffer;
_device* device = cmdbuf->dev;
_image* img = srcImage;
_buffer* buf = dstBuffer;
for(uint32_t c = 0; c < regionCount; ++c)
{
//TODO support this
assert(!pRegions[c].bufferRowLength);
assert(!pRegions[c].bufferImageHeight);
uint32_t size = pRegions[c].imageExtent.width * pRegions[c].imageExtent.height;
uint32_t pixelBpp = getFormatBpp(img->format);
for(uint32_t d = 0, offsetX = 0, offsetY = 0; d < size; d += 2048)
{
uint32_t width = size - d;
width = width < 2048 ? width : 2048;
VkImageCreateInfo ici = {};
ici.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
ici.extent.width = width;
ici.extent.height = 1;
ici.arrayLayers = 1;
ici.format = VK_FORMAT_R8G8B8A8_UNORM;
ici.imageType = VK_IMAGE_TYPE_2D;
ici.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
ici.mipLevels = 1;
ici.tiling = VK_IMAGE_TILING_OPTIMAL;
ici.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
VkImage dstDummyImage;
vkCreateImage(device, &ici, 0, &dstDummyImage);
//working with 32 bits per pixel
vkBindImageMemory(device, dstDummyImage, buf->boundMem, buf->boundOffset + d * 4);
VkImageBlit blit;
blit.srcOffsets[0] = pRegions[c].imageOffset;
blit.srcOffsets[0].x += offsetX;
blit.srcOffsets[0].y += offsetY;
blit.srcOffsets[1].x = pRegions[c].imageExtent.width;
blit.srcOffsets[1].y = pRegions[c].imageExtent.height;
blit.srcOffsets[1].z = pRegions[c].imageExtent.depth;
blit.srcSubresource = pRegions[c].imageSubresource;
blit.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
blit.dstSubresource.baseArrayLayer = 0;
blit.dstSubresource.mipLevel = 0;
blit.dstSubresource.layerCount = 1;
blit.dstOffsets[0].x = 0;
blit.dstOffsets[0].y = 0;
blit.dstOffsets[0].z = 0;
blit.dstOffsets[1].x = width;
blit.dstOffsets[1].y = 1;
blit.dstOffsets[1].z = 1;
RPIFUNC(vkCmdBlitImage)(commandBuffer, srcImage, srcImageLayout, dstDummyImage, ici.initialLayout, 1, &blit, VK_FILTER_NEAREST);
RPIFUNC(vkDestroyImage)(device, dstDummyImage, 0);
//TODO??
//offsetY += (offsetX + 2048)
}
}
PROFILEEND(RPIFUNC(vkCmdCopyImageToBuffer));
}