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Added optional offset and size parameter to RenderDevice buffer_get_data method

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This commit is contained in:
EpEpDragon 2022-12-28 10:37:42 +02:00
parent b14f7aa9f9
commit 36d02882b9
5 changed files with 20 additions and 9 deletions
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3
doc/classes/RenderingDevice.xml
View file

@ -26,7 +26,10 @@
<method name="buffer_get_data">
<return type="PackedByteArray" />
<param index="0" name="buffer" type="RID" />
<param index="1" name="offset_bytes" type="int" default="0" />
<param index="2" name="size_bytes" type="int" default="0" />
<description>
Returns a copy of the data of the specified [param buffer], optionally [param offset_bytes] and [param size_bytes] can be set to copy only a portion of the buffer.
</description>
</method>
<method name="buffer_update">

20
drivers/vulkan/rendering_device_vulkan.cpp
View file

@ -5926,7 +5926,7 @@ Error RenderingDeviceVulkan::buffer_clear(RID p_buffer, uint32_t p_offset, uint3
return OK;
}
Vector<uint8_t> RenderingDeviceVulkan::buffer_get_data(RID p_buffer) {
Vector<uint8_t> RenderingDeviceVulkan::buffer_get_data(RID p_buffer, uint32_t p_offset, uint32_t p_size) {
_THREAD_SAFE_METHOD_
// It could be this buffer was just created.
@ -5943,12 +5943,20 @@ Vector<uint8_t> RenderingDeviceVulkan::buffer_get_data(RID p_buffer) {
VkCommandBuffer command_buffer = frames[frame].setup_command_buffer;
// Size of buffer to retrieve.
if (!p_size) {
p_size = buffer->size;
} else {
ERR_FAIL_COND_V_MSG(p_size + p_offset > buffer->size, Vector<uint8_t>(),
"Size is larger than the buffer.");
}
Buffer tmp_buffer;
_buffer_allocate(&tmp_buffer, buffer->size, VK_BUFFER_USAGE_TRANSFER_DST_BIT, VMA_MEMORY_USAGE_AUTO_PREFER_HOST, VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT);
_buffer_allocate(&tmp_buffer, p_size, VK_BUFFER_USAGE_TRANSFER_DST_BIT, VMA_MEMORY_USAGE_AUTO_PREFER_HOST, VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT);
VkBufferCopy region;
region.srcOffset = 0;
region.srcOffset = p_offset;
region.dstOffset = 0;
region.size = buffer->size;
region.size = p_size;
vkCmdCopyBuffer(command_buffer, buffer->buffer, tmp_buffer.buffer, 1, &region); // Dst buffer is in CPU, but I wonder if src buffer needs a barrier for this.
// Flush everything so memory can be safely mapped.
_flush(true);
@ -5959,9 +5967,9 @@ Vector<uint8_t> RenderingDeviceVulkan::buffer_get_data(RID p_buffer) {
Vector<uint8_t> buffer_data;
{
buffer_data.resize(buffer->size);
buffer_data.resize(p_size);
uint8_t *w = buffer_data.ptrw();
memcpy(w, buffer_mem, buffer->size);
memcpy(w, buffer_mem, p_size);
}
vmaUnmapMemory(allocator, tmp_buffer.allocation);

2
drivers/vulkan/rendering_device_vulkan.h
View file

@ -1122,7 +1122,7 @@ public:
virtual Error buffer_update(RID p_buffer, uint32_t p_offset, uint32_t p_size, const void *p_data, BitField<BarrierMask> p_post_barrier = BARRIER_MASK_ALL_BARRIERS); // Works for any buffer.
virtual Error buffer_clear(RID p_buffer, uint32_t p_offset, uint32_t p_size, BitField<BarrierMask> p_post_barrier = BARRIER_MASK_ALL_BARRIERS);
virtual Vector<uint8_t> buffer_get_data(RID p_buffer);
virtual Vector<uint8_t> buffer_get_data(RID p_buffer, uint32_t p_offset = 0, uint32_t p_size = 0);
/*************************/
/**** RENDER PIPELINE ****/

2
servers/rendering/rendering_device.cpp
View file

@ -746,7 +746,7 @@ void RenderingDevice::_bind_methods() {
ClassDB::bind_method(D_METHOD("buffer_update", "buffer", "offset", "size_bytes", "data", "post_barrier"), &RenderingDevice::_buffer_update, DEFVAL(BARRIER_MASK_ALL_BARRIERS));
ClassDB::bind_method(D_METHOD("buffer_clear", "buffer", "offset", "size_bytes", "post_barrier"), &RenderingDevice::buffer_clear, DEFVAL(BARRIER_MASK_ALL_BARRIERS));
ClassDB::bind_method(D_METHOD("buffer_get_data", "buffer"), &RenderingDevice::buffer_get_data);
ClassDB::bind_method(D_METHOD("buffer_get_data", "buffer", "offset_bytes", "size_bytes"), &RenderingDevice::buffer_get_data, DEFVAL(0), DEFVAL(0));
ClassDB::bind_method(D_METHOD("render_pipeline_create", "shader", "framebuffer_format", "vertex_format", "primitive", "rasterization_state", "multisample_state", "stencil_state", "color_blend_state", "dynamic_state_flags", "for_render_pass", "specialization_constants"), &RenderingDevice::_render_pipeline_create, DEFVAL(0), DEFVAL(0), DEFVAL(TypedArray<RDPipelineSpecializationConstant>()));
ClassDB::bind_method(D_METHOD("render_pipeline_is_valid", "render_pipeline"), &RenderingDevice::render_pipeline_is_valid);

2
servers/rendering/rendering_device.h
View file

@ -828,7 +828,7 @@ public:
virtual Error buffer_update(RID p_buffer, uint32_t p_offset, uint32_t p_size, const void *p_data, BitField<BarrierMask> p_post_barrier = BARRIER_MASK_ALL_BARRIERS) = 0;
virtual Error buffer_clear(RID p_buffer, uint32_t p_offset, uint32_t p_size, BitField<BarrierMask> p_post_barrier = BARRIER_MASK_ALL_BARRIERS) = 0;
virtual Vector<uint8_t> buffer_get_data(RID p_buffer) = 0; //this causes stall, only use to retrieve large buffers for saving
virtual Vector<uint8_t> buffer_get_data(RID p_buffer, uint32_t p_offset = 0, uint32_t p_size = 0) = 0; // This causes stall, only use to retrieve large buffers for saving.
/******************************************/
/**** PIPELINE SPECIALIZATION CONSTANT ****/