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godot/servers/rendering/rendering_device_commons.h
Matias N. Goldberg c77cbf096b Improvements from TheForge (see description) 
The work was performed by collaboration of TheForge and Google. I am
merely splitting it up into smaller PRs and cleaning it up.

This is the most "risky" PR so far because the previous ones have been
miscellaneous stuff aimed at either [improve
debugging](https://github.com/godotengine/godot/pull/90993) (e.g. device
lost), [improve Android
experience](https://github.com/godotengine/godot/pull/96439) (add Swappy
for better Frame Pacing + Pre-Transformed Swapchains for slightly better
performance), or harmless [ASTC
improvements](https://github.com/godotengine/godot/pull/96045) (better
performance by simply toggling a feature when available).

However this PR contains larger modifications aimed at improving
performance or reducing memory fragmentation. With greater
modifications, come greater risks of bugs or breakage.

Changes introduced by this PR:

TBDR GPUs (e.g. most of Android + iOS + M1 Apple) support rendering to
Render Targets that are not backed by actual GPU memory (everything
stays in cache). This works as long as load action isn't `LOAD`, and
store action must be `DONT_CARE`. This saves VRAM (it also makes
painfully obvious when a mistake introduces a performance regression).
Of particular usefulness is when doing MSAA and keeping the raw MSAA
content is not necessary.

Some GPUs get faster when the sampler settings are hard-coded into the
GLSL shaders (instead of being dynamically bound at runtime). This
required changes to the GLSL shaders, PSO creation routines, Descriptor
creation routines, and Descriptor binding routines.

 - `bool immutable_samplers_enabled = true`

Setting it to false enforces the old behavior. Useful for debugging bugs
and regressions.

Immutable samplers requires that the samplers stay... immutable, hence
this boolean is useful if the promise gets broken. We might want to turn
this into a `GLOBAL_DEF` setting.

Instead of creating dozen/hundreds/thousands of `VkDescriptorSet` every
frame that need to be freed individually when they are no longer needed,
they all get freed at once by resetting the whole pool. Once the whole
pool is no longer in use by the GPU, it gets reset and its memory
recycled. Descriptor sets that are created to be kept around for longer
or forever (i.e. not created and freed within the same frame) **must
not** use linear pools. There may be more than one pool per frame. How
many pools per frame Godot ends up with depends on its capacity, and
that is controlled by
`rendering/rendering_device/vulkan/max_descriptors_per_pool`.

- **Possible improvement for later:** It should be possible for Godot
to adapt to how many descriptors per pool are needed on a per-key basis
(i.e. grow their capacity like `std::vector` does) after rendering a few
frames; which would be better than the current solution of having a
single global value for all pools (`max_descriptors_per_pool`) that the
user needs to tweak.

 - `bool linear_descriptor_pools_enabled = true`

Setting it to false enforces the old behavior. Useful for debugging bugs
and regressions.
Setting it to false is required when workarounding driver bugs (e.g.
Adreno 730).

A ridiculous optimization. Ridiculous because the original code
should've done this in the first place. Previously Godot was doing the
following:

  1. Create a command buffer **pool**. One per frame.
  2. Create multiple command buffers from the pool in point 1.
3. Call `vkBeginCommandBuffer` on the cmd buffer in point 2. This
resets the cmd buffer because Godot requests the
`VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT` flag.
  4. Add commands to the cmd buffers from point 2.
  5. Submit those commands.
6. On frame N + 2, recycle the buffer pool and cmd buffers from pt 1 &
2, and repeat from step 3.

The problem here is that step 3 resets each command buffer individually.
Initially Godot used to have 1 cmd buffer per pool, thus the impact is
very low.

But not anymore (specially with Adreno workarounds to force splitting
compute dispatches into a new cmd buffer, more on this later). However
Godot keeps around a very low amount of command buffers per frame.

The recommended method is to reset the whole pool, to reset all cmd
buffers at once. Hence the new steps would be:

  1. Create a command buffer **pool**. One per frame.
  2. Create multiple command buffers from the pool in point 1.
3. Call `vkBeginCommandBuffer` on the cmd buffer in point 2, which is
already reset/empty (see step 6).
  4. Add commands to the cmd buffers from point 2.
  5. Submit those commands.
6. On frame N + 2, recycle the buffer pool and cmd buffers from pt 1 &
2, call `vkResetCommandPool` and repeat from step 3.

**Possible issues:** @dariosamo added `transfer_worker` which creates a
command buffer pool:

```cpp
transfer_worker->command_pool =
driver->command_pool_create(transfer_queue_family,
RDD::COMMAND_BUFFER_TYPE_PRIMARY);
```

As expected, validation was complaining that command buffers were being
reused without being reset (that's good, we now know Validation Layers
will warn us of wrong use).
I fixed it by adding:

```cpp
void RenderingDevice::_wait_for_transfer_worker(TransferWorker
*p_transfer_worker) {
	driver->fence_wait(p_transfer_worker->command_fence);
	driver->command_pool_reset(p_transfer_worker->command_pool); //
! New line !
```

**Secondary cmd buffers are subject to the same issue but I didn't alter
them. I talked this with Dario and he is aware of this.**
Secondary cmd buffers are currently disabled due to other issues (it's
disabled on master).

 - `bool RenderingDeviceCommons::command_pool_reset_enabled`

Setting it to false enforces the old behavior. Useful for debugging bugs
and regressions.

There's no other reason for this boolean. Possibly once it becomes well
tested, the boolean could be removed entirely.

Adds `command_bind_render_uniform_sets` and
`add_draw_list_bind_uniform_sets` (+ compute variants).

It performs the same as `add_draw_list_bind_uniform_set` (notice
singular vs plural), but on multiple consecutive uniform sets, thus
reducing graph and draw call overhead.

 - `bool descriptor_set_batching = true;`

Setting it to false enforces the old behavior. Useful for debugging bugs
and regressions.

There's no other reason for this boolean. Possibly once it becomes well
tested, the boolean could be removed entirely.

Godot currently does the following:

 1. Fill the entire cmd buffer with commands.
 2. `submit()`
    - Wait with a semaphore for the swapchain.
- Trigger a semaphore to indicate when we're done (so the swapchain
can submit).
 3. `present()`

The optimization opportunity here is that 95% of Godot's rendering is
done offscreen.
Then a fullscreen pass copies everything to the swapchain. Godot doesn't
practically render directly to the swapchain.

The problem with this is that the GPU has to wait for the swapchain to
be released **to start anything**, when we could start *much earlier*.
Only the final blit pass must wait for the swapchain.

TheForge changed it to the following (more complicated, I'm simplifying
the idea):

 1. Fill the entire cmd buffer with commands.
 2. In `screen_prepare_for_drawing` do `submit()`
    - There are no semaphore waits for the swapchain.
    - Trigger a semaphore to indicate when we're done.
3. Fill a new cmd buffer that only does the final blit to the
swapchain.
 4. `submit()`
    - Wait with a semaphore for the submit() from step 2.
- Wait with a semaphore for the swapchain (so the swapchain can
submit).
- Trigger a semaphore to indicate when we're done (so the swapchain
can submit).
 5. `present()`

Dario discovered this problem independently while working on a different
platform.

**However TheForge's solution had to be rewritten from scratch:** The
complexity to achieve the solution was high and quite difficult to
maintain with the way Godot works now (after Übershaders PR).
But on the other hand, re-implementing the solution became much simpler
because Dario already had to do something similar: To fix an Adreno 730
driver bug, he had to implement splitting command buffers. **This is
exactly what we need!**. Thus it was re-written using this existing
functionality for a new purpose.

To achieve this, I added a new argument, `bool p_split_cmd_buffer`, to
`RenderingDeviceGraph::add_draw_list_begin`, which is only set to true
by `RenderingDevice::draw_list_begin_for_screen`.

The graph will split the draw list into its own command buffer.

 - `bool split_swapchain_into_its_own_cmd_buffer = true;`

Setting it to false enforces the old behavior. This might be necessary
for consoles which follow an alternate solution to the same problem.
If not, then we should consider removing it.

PR #90993 added `shader_destroy_modules()` but it was not actually in
use.

This PR adds several places where `shader_destroy_modules()` is called
after initialization to free up memory of SPIR-V structures that are no
longer needed.
2024-12-09 11:49:28 -03:00

1002 lines
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/**************************************************************************/
/* rendering_device_commons.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef RENDERING_DEVICE_COMMONS_H
#define RENDERING_DEVICE_COMMONS_H
#include "core/object/object.h"
#include "core/variant/type_info.h"
#define STEPIFY(m_number, m_alignment) ((((m_number) + ((m_alignment) - 1)) / (m_alignment)) * (m_alignment))
class RenderingDeviceCommons : public Object {
////////////////////////////////////////////
// PUBLIC STUFF
// Exposed by RenderingDevice, and shared
// with RenderingDeviceDriver.
////////////////////////////////////////////
public:
static const bool command_pool_reset_enabled = true;
/*****************/
/**** GENERIC ****/
/*****************/
static const int INVALID_ID = -1;
enum DataFormat {
DATA_FORMAT_R4G4_UNORM_PACK8,
DATA_FORMAT_R4G4B4A4_UNORM_PACK16,
DATA_FORMAT_B4G4R4A4_UNORM_PACK16,
DATA_FORMAT_R5G6B5_UNORM_PACK16,
DATA_FORMAT_B5G6R5_UNORM_PACK16,
DATA_FORMAT_R5G5B5A1_UNORM_PACK16,
DATA_FORMAT_B5G5R5A1_UNORM_PACK16,
DATA_FORMAT_A1R5G5B5_UNORM_PACK16,
DATA_FORMAT_R8_UNORM,
DATA_FORMAT_R8_SNORM,
DATA_FORMAT_R8_USCALED,
DATA_FORMAT_R8_SSCALED,
DATA_FORMAT_R8_UINT,
DATA_FORMAT_R8_SINT,
DATA_FORMAT_R8_SRGB,
DATA_FORMAT_R8G8_UNORM,
DATA_FORMAT_R8G8_SNORM,
DATA_FORMAT_R8G8_USCALED,
DATA_FORMAT_R8G8_SSCALED,
DATA_FORMAT_R8G8_UINT,
DATA_FORMAT_R8G8_SINT,
DATA_FORMAT_R8G8_SRGB,
DATA_FORMAT_R8G8B8_UNORM,
DATA_FORMAT_R8G8B8_SNORM,
DATA_FORMAT_R8G8B8_USCALED,
DATA_FORMAT_R8G8B8_SSCALED,
DATA_FORMAT_R8G8B8_UINT,
DATA_FORMAT_R8G8B8_SINT,
DATA_FORMAT_R8G8B8_SRGB,
DATA_FORMAT_B8G8R8_UNORM,
DATA_FORMAT_B8G8R8_SNORM,
DATA_FORMAT_B8G8R8_USCALED,
DATA_FORMAT_B8G8R8_SSCALED,
DATA_FORMAT_B8G8R8_UINT,
DATA_FORMAT_B8G8R8_SINT,
DATA_FORMAT_B8G8R8_SRGB,
DATA_FORMAT_R8G8B8A8_UNORM,
DATA_FORMAT_R8G8B8A8_SNORM,
DATA_FORMAT_R8G8B8A8_USCALED,
DATA_FORMAT_R8G8B8A8_SSCALED,
DATA_FORMAT_R8G8B8A8_UINT,
DATA_FORMAT_R8G8B8A8_SINT,
DATA_FORMAT_R8G8B8A8_SRGB,
DATA_FORMAT_B8G8R8A8_UNORM,
DATA_FORMAT_B8G8R8A8_SNORM,
DATA_FORMAT_B8G8R8A8_USCALED,
DATA_FORMAT_B8G8R8A8_SSCALED,
DATA_FORMAT_B8G8R8A8_UINT,
DATA_FORMAT_B8G8R8A8_SINT,
DATA_FORMAT_B8G8R8A8_SRGB,
DATA_FORMAT_A8B8G8R8_UNORM_PACK32,
DATA_FORMAT_A8B8G8R8_SNORM_PACK32,
DATA_FORMAT_A8B8G8R8_USCALED_PACK32,
DATA_FORMAT_A8B8G8R8_SSCALED_PACK32,
DATA_FORMAT_A8B8G8R8_UINT_PACK32,
DATA_FORMAT_A8B8G8R8_SINT_PACK32,
DATA_FORMAT_A8B8G8R8_SRGB_PACK32,
DATA_FORMAT_A2R10G10B10_UNORM_PACK32,
DATA_FORMAT_A2R10G10B10_SNORM_PACK32,
DATA_FORMAT_A2R10G10B10_USCALED_PACK32,
DATA_FORMAT_A2R10G10B10_SSCALED_PACK32,
DATA_FORMAT_A2R10G10B10_UINT_PACK32,
DATA_FORMAT_A2R10G10B10_SINT_PACK32,
DATA_FORMAT_A2B10G10R10_UNORM_PACK32,
DATA_FORMAT_A2B10G10R10_SNORM_PACK32,
DATA_FORMAT_A2B10G10R10_USCALED_PACK32,
DATA_FORMAT_A2B10G10R10_SSCALED_PACK32,
DATA_FORMAT_A2B10G10R10_UINT_PACK32,
DATA_FORMAT_A2B10G10R10_SINT_PACK32,
DATA_FORMAT_R16_UNORM,
DATA_FORMAT_R16_SNORM,
DATA_FORMAT_R16_USCALED,
DATA_FORMAT_R16_SSCALED,
DATA_FORMAT_R16_UINT,
DATA_FORMAT_R16_SINT,
DATA_FORMAT_R16_SFLOAT,
DATA_FORMAT_R16G16_UNORM,
DATA_FORMAT_R16G16_SNORM,
DATA_FORMAT_R16G16_USCALED,
DATA_FORMAT_R16G16_SSCALED,
DATA_FORMAT_R16G16_UINT,
DATA_FORMAT_R16G16_SINT,
DATA_FORMAT_R16G16_SFLOAT,
DATA_FORMAT_R16G16B16_UNORM,
DATA_FORMAT_R16G16B16_SNORM,
DATA_FORMAT_R16G16B16_USCALED,
DATA_FORMAT_R16G16B16_SSCALED,
DATA_FORMAT_R16G16B16_UINT,
DATA_FORMAT_R16G16B16_SINT,
DATA_FORMAT_R16G16B16_SFLOAT,
DATA_FORMAT_R16G16B16A16_UNORM,
DATA_FORMAT_R16G16B16A16_SNORM,
DATA_FORMAT_R16G16B16A16_USCALED,
DATA_FORMAT_R16G16B16A16_SSCALED,
DATA_FORMAT_R16G16B16A16_UINT,
DATA_FORMAT_R16G16B16A16_SINT,
DATA_FORMAT_R16G16B16A16_SFLOAT,
DATA_FORMAT_R32_UINT,
DATA_FORMAT_R32_SINT,
DATA_FORMAT_R32_SFLOAT,
DATA_FORMAT_R32G32_UINT,
DATA_FORMAT_R32G32_SINT,
DATA_FORMAT_R32G32_SFLOAT,
DATA_FORMAT_R32G32B32_UINT,
DATA_FORMAT_R32G32B32_SINT,
DATA_FORMAT_R32G32B32_SFLOAT,
DATA_FORMAT_R32G32B32A32_UINT,
DATA_FORMAT_R32G32B32A32_SINT,
DATA_FORMAT_R32G32B32A32_SFLOAT,
DATA_FORMAT_R64_UINT,
DATA_FORMAT_R64_SINT,
DATA_FORMAT_R64_SFLOAT,
DATA_FORMAT_R64G64_UINT,
DATA_FORMAT_R64G64_SINT,
DATA_FORMAT_R64G64_SFLOAT,
DATA_FORMAT_R64G64B64_UINT,
DATA_FORMAT_R64G64B64_SINT,
DATA_FORMAT_R64G64B64_SFLOAT,
DATA_FORMAT_R64G64B64A64_UINT,
DATA_FORMAT_R64G64B64A64_SINT,
DATA_FORMAT_R64G64B64A64_SFLOAT,
DATA_FORMAT_B10G11R11_UFLOAT_PACK32,
DATA_FORMAT_E5B9G9R9_UFLOAT_PACK32,
DATA_FORMAT_D16_UNORM,
DATA_FORMAT_X8_D24_UNORM_PACK32,
DATA_FORMAT_D32_SFLOAT,
DATA_FORMAT_S8_UINT,
DATA_FORMAT_D16_UNORM_S8_UINT,
DATA_FORMAT_D24_UNORM_S8_UINT,
DATA_FORMAT_D32_SFLOAT_S8_UINT,
DATA_FORMAT_BC1_RGB_UNORM_BLOCK,
DATA_FORMAT_BC1_RGB_SRGB_BLOCK,
DATA_FORMAT_BC1_RGBA_UNORM_BLOCK,
DATA_FORMAT_BC1_RGBA_SRGB_BLOCK,
DATA_FORMAT_BC2_UNORM_BLOCK,
DATA_FORMAT_BC2_SRGB_BLOCK,
DATA_FORMAT_BC3_UNORM_BLOCK,
DATA_FORMAT_BC3_SRGB_BLOCK,
DATA_FORMAT_BC4_UNORM_BLOCK,
DATA_FORMAT_BC4_SNORM_BLOCK,
DATA_FORMAT_BC5_UNORM_BLOCK,
DATA_FORMAT_BC5_SNORM_BLOCK,
DATA_FORMAT_BC6H_UFLOAT_BLOCK,
DATA_FORMAT_BC6H_SFLOAT_BLOCK,
DATA_FORMAT_BC7_UNORM_BLOCK,
DATA_FORMAT_BC7_SRGB_BLOCK,
DATA_FORMAT_ETC2_R8G8B8_UNORM_BLOCK,
DATA_FORMAT_ETC2_R8G8B8_SRGB_BLOCK,
DATA_FORMAT_ETC2_R8G8B8A1_UNORM_BLOCK,
DATA_FORMAT_ETC2_R8G8B8A1_SRGB_BLOCK,
DATA_FORMAT_ETC2_R8G8B8A8_UNORM_BLOCK,
DATA_FORMAT_ETC2_R8G8B8A8_SRGB_BLOCK,
DATA_FORMAT_EAC_R11_UNORM_BLOCK,
DATA_FORMAT_EAC_R11_SNORM_BLOCK,
DATA_FORMAT_EAC_R11G11_UNORM_BLOCK,
DATA_FORMAT_EAC_R11G11_SNORM_BLOCK,
DATA_FORMAT_ASTC_4x4_UNORM_BLOCK,
DATA_FORMAT_ASTC_4x4_SRGB_BLOCK,
DATA_FORMAT_ASTC_5x4_UNORM_BLOCK,
DATA_FORMAT_ASTC_5x4_SRGB_BLOCK,
DATA_FORMAT_ASTC_5x5_UNORM_BLOCK,
DATA_FORMAT_ASTC_5x5_SRGB_BLOCK,
DATA_FORMAT_ASTC_6x5_UNORM_BLOCK,
DATA_FORMAT_ASTC_6x5_SRGB_BLOCK,
DATA_FORMAT_ASTC_6x6_UNORM_BLOCK,
DATA_FORMAT_ASTC_6x6_SRGB_BLOCK,
DATA_FORMAT_ASTC_8x5_UNORM_BLOCK,
DATA_FORMAT_ASTC_8x5_SRGB_BLOCK,
DATA_FORMAT_ASTC_8x6_UNORM_BLOCK,
DATA_FORMAT_ASTC_8x6_SRGB_BLOCK,
DATA_FORMAT_ASTC_8x8_UNORM_BLOCK,
DATA_FORMAT_ASTC_8x8_SRGB_BLOCK,
DATA_FORMAT_ASTC_10x5_UNORM_BLOCK,
DATA_FORMAT_ASTC_10x5_SRGB_BLOCK,
DATA_FORMAT_ASTC_10x6_UNORM_BLOCK,
DATA_FORMAT_ASTC_10x6_SRGB_BLOCK,
DATA_FORMAT_ASTC_10x8_UNORM_BLOCK,
DATA_FORMAT_ASTC_10x8_SRGB_BLOCK,
DATA_FORMAT_ASTC_10x10_UNORM_BLOCK,
DATA_FORMAT_ASTC_10x10_SRGB_BLOCK,
DATA_FORMAT_ASTC_12x10_UNORM_BLOCK,
DATA_FORMAT_ASTC_12x10_SRGB_BLOCK,
DATA_FORMAT_ASTC_12x12_UNORM_BLOCK,
DATA_FORMAT_ASTC_12x12_SRGB_BLOCK,
DATA_FORMAT_G8B8G8R8_422_UNORM,
DATA_FORMAT_B8G8R8G8_422_UNORM,
DATA_FORMAT_G8_B8_R8_3PLANE_420_UNORM,
DATA_FORMAT_G8_B8R8_2PLANE_420_UNORM,
DATA_FORMAT_G8_B8_R8_3PLANE_422_UNORM,
DATA_FORMAT_G8_B8R8_2PLANE_422_UNORM,
DATA_FORMAT_G8_B8_R8_3PLANE_444_UNORM,
DATA_FORMAT_R10X6_UNORM_PACK16,
DATA_FORMAT_R10X6G10X6_UNORM_2PACK16,
DATA_FORMAT_R10X6G10X6B10X6A10X6_UNORM_4PACK16,
DATA_FORMAT_G10X6B10X6G10X6R10X6_422_UNORM_4PACK16,
DATA_FORMAT_B10X6G10X6R10X6G10X6_422_UNORM_4PACK16,
DATA_FORMAT_G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16,
DATA_FORMAT_G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16,
DATA_FORMAT_G10X6_B10X6_R10X6_3PLANE_422_UNORM_3PACK16,
DATA_FORMAT_G10X6_B10X6R10X6_2PLANE_422_UNORM_3PACK16,
DATA_FORMAT_G10X6_B10X6_R10X6_3PLANE_444_UNORM_3PACK16,
DATA_FORMAT_R12X4_UNORM_PACK16,
DATA_FORMAT_R12X4G12X4_UNORM_2PACK16,
DATA_FORMAT_R12X4G12X4B12X4A12X4_UNORM_4PACK16,
DATA_FORMAT_G12X4B12X4G12X4R12X4_422_UNORM_4PACK16,
DATA_FORMAT_B12X4G12X4R12X4G12X4_422_UNORM_4PACK16,
DATA_FORMAT_G12X4_B12X4_R12X4_3PLANE_420_UNORM_3PACK16,
DATA_FORMAT_G12X4_B12X4R12X4_2PLANE_420_UNORM_3PACK16,
DATA_FORMAT_G12X4_B12X4_R12X4_3PLANE_422_UNORM_3PACK16,
DATA_FORMAT_G12X4_B12X4R12X4_2PLANE_422_UNORM_3PACK16,
DATA_FORMAT_G12X4_B12X4_R12X4_3PLANE_444_UNORM_3PACK16,
DATA_FORMAT_G16B16G16R16_422_UNORM,
DATA_FORMAT_B16G16R16G16_422_UNORM,
DATA_FORMAT_G16_B16_R16_3PLANE_420_UNORM,
DATA_FORMAT_G16_B16R16_2PLANE_420_UNORM,
DATA_FORMAT_G16_B16_R16_3PLANE_422_UNORM,
DATA_FORMAT_G16_B16R16_2PLANE_422_UNORM,
DATA_FORMAT_G16_B16_R16_3PLANE_444_UNORM,
DATA_FORMAT_MAX,
};
// Breadcrumb markers are useful for debugging GPU crashes (i.e. DEVICE_LOST). Internally
// they're just an uint32_t to "tag" a GPU command. These are only used for debugging and do not
// (or at least shouldn't) alter the execution behavior in any way.
//
// When a GPU crashes and Godot was built in dev or debug mode; Godot will dump what commands
// were being executed and what tag they were marked with.
// This makes narrowing down the cause of a crash easier. Note that a GPU can be executing
// multiple commands at the same time. It is also useful to identify data hazards.
//
// For example if each LIGHTMAPPER_PASS must be executed in sequential order, but dumps
// indicated that pass (LIGHTMAPPER_PASS | 5) was being executed at the same time as
// (LIGHTMAPPER_PASS | 4), that would indicate there is a missing barrier or a render graph bug.
//
// The enums are bitshifted by 16 bits so it's possible to add user data via bitwise operations.
// Using this enum is not mandatory; but it is recommended so that all subsystems agree what each
// ID means when dumping info.
enum BreadcrumbMarker {
NONE = 0,
// Environment
REFLECTION_PROBES = 1u << 16u,
SKY_PASS = 2u << 16u,
// Light mapping
LIGHTMAPPER_PASS = 3u << 16u,
// Shadows
SHADOW_PASS_DIRECTIONAL = 4u << 16u,
SHADOW_PASS_CUBE = 5u << 16u,
// Geometry passes
OPAQUE_PASS = 6u << 16u,
ALPHA_PASS = 7u << 16u,
TRANSPARENT_PASS = 8u << 16u,
// Screen effects
POST_PROCESSING_PASS = 9u << 16u,
BLIT_PASS = 10u << 16u,
UI_PASS = 11u << 16u,
// Other
DEBUG_PASS = 12u << 16u,
};
enum CompareOperator {
COMPARE_OP_NEVER,
COMPARE_OP_LESS,
COMPARE_OP_EQUAL,
COMPARE_OP_LESS_OR_EQUAL,
COMPARE_OP_GREATER,
COMPARE_OP_NOT_EQUAL,
COMPARE_OP_GREATER_OR_EQUAL,
COMPARE_OP_ALWAYS,
COMPARE_OP_MAX
};
/*****************/
/**** TEXTURE ****/
/*****************/
enum TextureType {
TEXTURE_TYPE_1D,
TEXTURE_TYPE_2D,
TEXTURE_TYPE_3D,
TEXTURE_TYPE_CUBE,
TEXTURE_TYPE_1D_ARRAY,
TEXTURE_TYPE_2D_ARRAY,
TEXTURE_TYPE_CUBE_ARRAY,
TEXTURE_TYPE_MAX,
};
enum TextureSamples {
TEXTURE_SAMPLES_1,
TEXTURE_SAMPLES_2,
TEXTURE_SAMPLES_4,
TEXTURE_SAMPLES_8,
TEXTURE_SAMPLES_16,
TEXTURE_SAMPLES_32,
TEXTURE_SAMPLES_64,
TEXTURE_SAMPLES_MAX,
};
enum TextureUsageBits {
TEXTURE_USAGE_SAMPLING_BIT = (1 << 0),
TEXTURE_USAGE_COLOR_ATTACHMENT_BIT = (1 << 1),
TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT = (1 << 2),
TEXTURE_USAGE_STORAGE_BIT = (1 << 3),
TEXTURE_USAGE_STORAGE_ATOMIC_BIT = (1 << 4),
TEXTURE_USAGE_CPU_READ_BIT = (1 << 5),
TEXTURE_USAGE_CAN_UPDATE_BIT = (1 << 6),
TEXTURE_USAGE_CAN_COPY_FROM_BIT = (1 << 7),
TEXTURE_USAGE_CAN_COPY_TO_BIT = (1 << 8),
TEXTURE_USAGE_INPUT_ATTACHMENT_BIT = (1 << 9),
TEXTURE_USAGE_VRS_ATTACHMENT_BIT = (1 << 10),
// When set, the texture is not backed by actual memory. It only ever lives in the cache.
// This is particularly useful for:
// 1. Depth/stencil buffers that are not needed after producing the colour output.
// 2. MSAA surfaces that are immediately resolved (i.e. its raw content isn't needed).
//
// This flag heavily improves performance & saves memory on TBDR GPUs (e.g. mobile).
// On Desktop this flag won't save memory but it still instructs the render graph that data will
// be discarded aggressively which may still improve some performance.
//
// It is not valid to perform copies from/to this texture, since it doesn't occupy actual RAM.
// It is also not valid to sample from this texture except using subpasses or via read/write
// pixel shader extensions (e.g. VK_EXT_rasterization_order_attachment_access).
//
// Try to set this bit as much as possible. If you set it, validation doesn't complain
// and it works fine on mobile, then go ahead.
TEXTURE_USAGE_TRANSIENT_BIT = (1 << 11),
};
struct TextureFormat {
DataFormat format = DATA_FORMAT_R8_UNORM;
uint32_t width = 1;
uint32_t height = 1;
uint32_t depth = 1;
uint32_t array_layers = 1;
uint32_t mipmaps = 1;
TextureType texture_type = TEXTURE_TYPE_2D;
TextureSamples samples = TEXTURE_SAMPLES_1;
uint32_t usage_bits = 0;
Vector<DataFormat> shareable_formats;
bool is_resolve_buffer = false;
bool is_discardable = false;
bool operator==(const TextureFormat &b) const {
if (format != b.format) {
return false;
} else if (width != b.width) {
return false;
} else if (height != b.height) {
return false;
} else if (depth != b.depth) {
return false;
} else if (array_layers != b.array_layers) {
return false;
} else if (mipmaps != b.mipmaps) {
return false;
} else if (texture_type != b.texture_type) {
return false;
} else if (samples != b.samples) {
return false;
} else if (usage_bits != b.usage_bits) {
return false;
} else if (shareable_formats != b.shareable_formats) {
return false;
} else if (is_resolve_buffer != b.is_resolve_buffer) {
return false;
} else if (is_discardable != b.is_discardable) {
return false;
} else {
return true;
}
}
};
enum TextureSwizzle {
TEXTURE_SWIZZLE_IDENTITY,
TEXTURE_SWIZZLE_ZERO,
TEXTURE_SWIZZLE_ONE,
TEXTURE_SWIZZLE_R,
TEXTURE_SWIZZLE_G,
TEXTURE_SWIZZLE_B,
TEXTURE_SWIZZLE_A,
TEXTURE_SWIZZLE_MAX
};
enum TextureSliceType {
TEXTURE_SLICE_2D,
TEXTURE_SLICE_CUBEMAP,
TEXTURE_SLICE_3D,
TEXTURE_SLICE_2D_ARRAY,
TEXTURE_SLICE_MAX
};
/*****************/
/**** SAMPLER ****/
/*****************/
enum SamplerFilter {
SAMPLER_FILTER_NEAREST,
SAMPLER_FILTER_LINEAR,
};
enum SamplerRepeatMode {
SAMPLER_REPEAT_MODE_REPEAT,
SAMPLER_REPEAT_MODE_MIRRORED_REPEAT,
SAMPLER_REPEAT_MODE_CLAMP_TO_EDGE,
SAMPLER_REPEAT_MODE_CLAMP_TO_BORDER,
SAMPLER_REPEAT_MODE_MIRROR_CLAMP_TO_EDGE,
SAMPLER_REPEAT_MODE_MAX
};
enum SamplerBorderColor {
SAMPLER_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK,
SAMPLER_BORDER_COLOR_INT_TRANSPARENT_BLACK,
SAMPLER_BORDER_COLOR_FLOAT_OPAQUE_BLACK,
SAMPLER_BORDER_COLOR_INT_OPAQUE_BLACK,
SAMPLER_BORDER_COLOR_FLOAT_OPAQUE_WHITE,
SAMPLER_BORDER_COLOR_INT_OPAQUE_WHITE,
SAMPLER_BORDER_COLOR_MAX
};
struct SamplerState {
SamplerFilter mag_filter = SAMPLER_FILTER_NEAREST;
SamplerFilter min_filter = SAMPLER_FILTER_NEAREST;
SamplerFilter mip_filter = SAMPLER_FILTER_NEAREST;
SamplerRepeatMode repeat_u = SAMPLER_REPEAT_MODE_CLAMP_TO_EDGE;
SamplerRepeatMode repeat_v = SAMPLER_REPEAT_MODE_CLAMP_TO_EDGE;
SamplerRepeatMode repeat_w = SAMPLER_REPEAT_MODE_CLAMP_TO_EDGE;
float lod_bias = 0.0f;
bool use_anisotropy = false;
float anisotropy_max = 1.0f;
bool enable_compare = false;
CompareOperator compare_op = COMPARE_OP_ALWAYS;
float min_lod = 0.0f;
float max_lod = 1e20; // Something very large should do.
SamplerBorderColor border_color = SAMPLER_BORDER_COLOR_FLOAT_OPAQUE_BLACK;
bool unnormalized_uvw = false;
};
/**********************/
/**** VERTEX ARRAY ****/
/**********************/
enum IndexBufferFormat {
INDEX_BUFFER_FORMAT_UINT16,
INDEX_BUFFER_FORMAT_UINT32,
};
enum VertexFrequency {
VERTEX_FREQUENCY_VERTEX,
VERTEX_FREQUENCY_INSTANCE,
};
struct VertexAttribute {
uint32_t location = 0; // Shader location.
uint32_t offset = 0;
DataFormat format = DATA_FORMAT_MAX;
uint32_t stride = 0;
VertexFrequency frequency = VERTEX_FREQUENCY_VERTEX;
};
/*********************/
/**** FRAMEBUFFER ****/
/*********************/
static const int32_t ATTACHMENT_UNUSED = -1;
/****************/
/**** SHADER ****/
/****************/
enum ShaderStage {
SHADER_STAGE_VERTEX,
SHADER_STAGE_FRAGMENT,
SHADER_STAGE_TESSELATION_CONTROL,
SHADER_STAGE_TESSELATION_EVALUATION,
SHADER_STAGE_COMPUTE,
SHADER_STAGE_MAX,
SHADER_STAGE_VERTEX_BIT = (1 << SHADER_STAGE_VERTEX),
SHADER_STAGE_FRAGMENT_BIT = (1 << SHADER_STAGE_FRAGMENT),
SHADER_STAGE_TESSELATION_CONTROL_BIT = (1 << SHADER_STAGE_TESSELATION_CONTROL),
SHADER_STAGE_TESSELATION_EVALUATION_BIT = (1 << SHADER_STAGE_TESSELATION_EVALUATION),
SHADER_STAGE_COMPUTE_BIT = (1 << SHADER_STAGE_COMPUTE),
};
struct ShaderStageSPIRVData {
ShaderStage shader_stage = SHADER_STAGE_MAX;
Vector<uint8_t> spirv;
};
/*********************/
/**** UNIFORM SET ****/
/*********************/
static const uint32_t MAX_UNIFORM_SETS = 16;
enum UniformType {
UNIFORM_TYPE_SAMPLER, // For sampling only (sampler GLSL type).
UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, // For sampling only, but includes a texture, (samplerXX GLSL type), first a sampler then a texture.
UNIFORM_TYPE_TEXTURE, // Only texture, (textureXX GLSL type).
UNIFORM_TYPE_IMAGE, // Storage image (imageXX GLSL type), for compute mostly.
UNIFORM_TYPE_TEXTURE_BUFFER, // Buffer texture (or TBO, textureBuffer type).
UNIFORM_TYPE_SAMPLER_WITH_TEXTURE_BUFFER, // Buffer texture with a sampler(or TBO, samplerBuffer type).
UNIFORM_TYPE_IMAGE_BUFFER, // Texel buffer, (imageBuffer type), for compute mostly.
UNIFORM_TYPE_UNIFORM_BUFFER, // Regular uniform buffer (or UBO).
UNIFORM_TYPE_STORAGE_BUFFER, // Storage buffer ("buffer" qualifier) like UBO, but supports storage, for compute mostly.
UNIFORM_TYPE_INPUT_ATTACHMENT, // Used for sub-pass read/write, for mobile mostly.
UNIFORM_TYPE_MAX
};
/******************/
/**** PIPELINE ****/
/******************/
enum PipelineSpecializationConstantType {
PIPELINE_SPECIALIZATION_CONSTANT_TYPE_BOOL,
PIPELINE_SPECIALIZATION_CONSTANT_TYPE_INT,
PIPELINE_SPECIALIZATION_CONSTANT_TYPE_FLOAT,
};
struct PipelineSpecializationConstant {
PipelineSpecializationConstantType type = {};
uint32_t constant_id = 0xffffffff;
union {
uint32_t int_value = 0;
float float_value;
bool bool_value;
};
};
/*******************/
/**** RENDERING ****/
/*******************/
// ----- PIPELINE -----
enum RenderPrimitive {
RENDER_PRIMITIVE_POINTS,
RENDER_PRIMITIVE_LINES,
RENDER_PRIMITIVE_LINES_WITH_ADJACENCY,
RENDER_PRIMITIVE_LINESTRIPS,
RENDER_PRIMITIVE_LINESTRIPS_WITH_ADJACENCY,
RENDER_PRIMITIVE_TRIANGLES,
RENDER_PRIMITIVE_TRIANGLES_WITH_ADJACENCY,
RENDER_PRIMITIVE_TRIANGLE_STRIPS,
RENDER_PRIMITIVE_TRIANGLE_STRIPS_WITH_AJACENCY,
RENDER_PRIMITIVE_TRIANGLE_STRIPS_WITH_RESTART_INDEX,
RENDER_PRIMITIVE_TESSELATION_PATCH,
RENDER_PRIMITIVE_MAX
};
enum PolygonCullMode {
POLYGON_CULL_DISABLED,
POLYGON_CULL_FRONT,
POLYGON_CULL_BACK,
POLYGON_CULL_MAX
};
enum PolygonFrontFace {
POLYGON_FRONT_FACE_CLOCKWISE,
POLYGON_FRONT_FACE_COUNTER_CLOCKWISE,
};
enum StencilOperation {
STENCIL_OP_KEEP,
STENCIL_OP_ZERO,
STENCIL_OP_REPLACE,
STENCIL_OP_INCREMENT_AND_CLAMP,
STENCIL_OP_DECREMENT_AND_CLAMP,
STENCIL_OP_INVERT,
STENCIL_OP_INCREMENT_AND_WRAP,
STENCIL_OP_DECREMENT_AND_WRAP,
STENCIL_OP_MAX
};
enum LogicOperation {
LOGIC_OP_CLEAR,
LOGIC_OP_AND,
LOGIC_OP_AND_REVERSE,
LOGIC_OP_COPY,
LOGIC_OP_AND_INVERTED,
LOGIC_OP_NO_OP,
LOGIC_OP_XOR,
LOGIC_OP_OR,
LOGIC_OP_NOR,
LOGIC_OP_EQUIVALENT,
LOGIC_OP_INVERT,
LOGIC_OP_OR_REVERSE,
LOGIC_OP_COPY_INVERTED,
LOGIC_OP_OR_INVERTED,
LOGIC_OP_NAND,
LOGIC_OP_SET,
LOGIC_OP_MAX
};
enum BlendFactor {
BLEND_FACTOR_ZERO,
BLEND_FACTOR_ONE,
BLEND_FACTOR_SRC_COLOR,
BLEND_FACTOR_ONE_MINUS_SRC_COLOR,
BLEND_FACTOR_DST_COLOR,
BLEND_FACTOR_ONE_MINUS_DST_COLOR,
BLEND_FACTOR_SRC_ALPHA,
BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
BLEND_FACTOR_DST_ALPHA,
BLEND_FACTOR_ONE_MINUS_DST_ALPHA,
BLEND_FACTOR_CONSTANT_COLOR,
BLEND_FACTOR_ONE_MINUS_CONSTANT_COLOR,
BLEND_FACTOR_CONSTANT_ALPHA,
BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA,
BLEND_FACTOR_SRC_ALPHA_SATURATE,
BLEND_FACTOR_SRC1_COLOR,
BLEND_FACTOR_ONE_MINUS_SRC1_COLOR,
BLEND_FACTOR_SRC1_ALPHA,
BLEND_FACTOR_ONE_MINUS_SRC1_ALPHA,
BLEND_FACTOR_MAX
};
enum BlendOperation {
BLEND_OP_ADD,
BLEND_OP_SUBTRACT,
BLEND_OP_REVERSE_SUBTRACT,
BLEND_OP_MINIMUM,
BLEND_OP_MAXIMUM, // Yes, this one is an actual operator.
BLEND_OP_MAX
};
struct PipelineRasterizationState {
bool enable_depth_clamp = false;
bool discard_primitives = false;
bool wireframe = false;
PolygonCullMode cull_mode = POLYGON_CULL_DISABLED;
PolygonFrontFace front_face = POLYGON_FRONT_FACE_CLOCKWISE;
bool depth_bias_enabled = false;
float depth_bias_constant_factor = 0.0f;
float depth_bias_clamp = 0.0f;
float depth_bias_slope_factor = 0.0f;
float line_width = 1.0f;
uint32_t patch_control_points = 1;
};
struct PipelineMultisampleState {
TextureSamples sample_count = TEXTURE_SAMPLES_1;
bool enable_sample_shading = false;
float min_sample_shading = 0.0f;
Vector<uint32_t> sample_mask;
bool enable_alpha_to_coverage = false;
bool enable_alpha_to_one = false;
};
struct PipelineDepthStencilState {
bool enable_depth_test = false;
bool enable_depth_write = false;
CompareOperator depth_compare_operator = COMPARE_OP_ALWAYS;
bool enable_depth_range = false;
float depth_range_min = 0;
float depth_range_max = 0;
bool enable_stencil = false;
struct StencilOperationState {
StencilOperation fail = STENCIL_OP_ZERO;
StencilOperation pass = STENCIL_OP_ZERO;
StencilOperation depth_fail = STENCIL_OP_ZERO;
CompareOperator compare = COMPARE_OP_ALWAYS;
uint32_t compare_mask = 0;
uint32_t write_mask = 0;
uint32_t reference = 0;
};
StencilOperationState front_op;
StencilOperationState back_op;
};
struct PipelineColorBlendState {
bool enable_logic_op = false;
LogicOperation logic_op = LOGIC_OP_CLEAR;
struct Attachment {
bool enable_blend = false;
BlendFactor src_color_blend_factor = BLEND_FACTOR_ZERO;
BlendFactor dst_color_blend_factor = BLEND_FACTOR_ZERO;
BlendOperation color_blend_op = BLEND_OP_ADD;
BlendFactor src_alpha_blend_factor = BLEND_FACTOR_ZERO;
BlendFactor dst_alpha_blend_factor = BLEND_FACTOR_ZERO;
BlendOperation alpha_blend_op = BLEND_OP_ADD;
bool write_r = true;
bool write_g = true;
bool write_b = true;
bool write_a = true;
};
static PipelineColorBlendState create_disabled(int p_attachments = 1) {
PipelineColorBlendState bs;
for (int i = 0; i < p_attachments; i++) {
bs.attachments.push_back(Attachment());
}
return bs;
}
static PipelineColorBlendState create_blend(int p_attachments = 1) {
PipelineColorBlendState bs;
for (int i = 0; i < p_attachments; i++) {
Attachment ba;
ba.enable_blend = true;
ba.src_color_blend_factor = BLEND_FACTOR_SRC_ALPHA;
ba.dst_color_blend_factor = BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
ba.src_alpha_blend_factor = BLEND_FACTOR_SRC_ALPHA;
ba.dst_alpha_blend_factor = BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
bs.attachments.push_back(ba);
}
return bs;
}
Vector<Attachment> attachments; // One per render target texture.
Color blend_constant;
};
enum PipelineDynamicStateFlags {
DYNAMIC_STATE_LINE_WIDTH = (1 << 0),
DYNAMIC_STATE_DEPTH_BIAS = (1 << 1),
DYNAMIC_STATE_BLEND_CONSTANTS = (1 << 2),
DYNAMIC_STATE_DEPTH_BOUNDS = (1 << 3),
DYNAMIC_STATE_STENCIL_COMPARE_MASK = (1 << 4),
DYNAMIC_STATE_STENCIL_WRITE_MASK = (1 << 5),
DYNAMIC_STATE_STENCIL_REFERENCE = (1 << 6),
};
/**************/
/**** MISC ****/
/**************/
// This enum matches VkPhysicalDeviceType (except for `DEVICE_TYPE_MAX`).
// Unlike VkPhysicalDeviceType, DeviceType is exposed to the scripting API.
enum DeviceType {
DEVICE_TYPE_OTHER,
DEVICE_TYPE_INTEGRATED_GPU,
DEVICE_TYPE_DISCRETE_GPU,
DEVICE_TYPE_VIRTUAL_GPU,
DEVICE_TYPE_CPU,
DEVICE_TYPE_MAX
};
// Defined in an API-agnostic way.
// Some may not make sense for the underlying API; in that case, 0 is returned.
enum DriverResource {
DRIVER_RESOURCE_LOGICAL_DEVICE,
DRIVER_RESOURCE_PHYSICAL_DEVICE,
DRIVER_RESOURCE_TOPMOST_OBJECT,
DRIVER_RESOURCE_COMMAND_QUEUE,
DRIVER_RESOURCE_QUEUE_FAMILY,
DRIVER_RESOURCE_TEXTURE,
DRIVER_RESOURCE_TEXTURE_VIEW,
DRIVER_RESOURCE_TEXTURE_DATA_FORMAT,
DRIVER_RESOURCE_SAMPLER,
DRIVER_RESOURCE_UNIFORM_SET,
DRIVER_RESOURCE_BUFFER,
DRIVER_RESOURCE_COMPUTE_PIPELINE,
DRIVER_RESOURCE_RENDER_PIPELINE,
#ifndef DISABLE_DEPRECATED
DRIVER_RESOURCE_VULKAN_DEVICE = DRIVER_RESOURCE_LOGICAL_DEVICE,
DRIVER_RESOURCE_VULKAN_PHYSICAL_DEVICE = DRIVER_RESOURCE_PHYSICAL_DEVICE,
DRIVER_RESOURCE_VULKAN_INSTANCE = DRIVER_RESOURCE_TOPMOST_OBJECT,
DRIVER_RESOURCE_VULKAN_QUEUE = DRIVER_RESOURCE_COMMAND_QUEUE,
DRIVER_RESOURCE_VULKAN_QUEUE_FAMILY_INDEX = DRIVER_RESOURCE_QUEUE_FAMILY,
DRIVER_RESOURCE_VULKAN_IMAGE = DRIVER_RESOURCE_TEXTURE,
DRIVER_RESOURCE_VULKAN_IMAGE_VIEW = DRIVER_RESOURCE_TEXTURE_VIEW,
DRIVER_RESOURCE_VULKAN_IMAGE_NATIVE_TEXTURE_FORMAT = DRIVER_RESOURCE_TEXTURE_DATA_FORMAT,
DRIVER_RESOURCE_VULKAN_SAMPLER = DRIVER_RESOURCE_SAMPLER,
DRIVER_RESOURCE_VULKAN_DESCRIPTOR_SET = DRIVER_RESOURCE_UNIFORM_SET,
DRIVER_RESOURCE_VULKAN_BUFFER = DRIVER_RESOURCE_BUFFER,
DRIVER_RESOURCE_VULKAN_COMPUTE_PIPELINE = DRIVER_RESOURCE_COMPUTE_PIPELINE,
DRIVER_RESOURCE_VULKAN_RENDER_PIPELINE = DRIVER_RESOURCE_RENDER_PIPELINE,
#endif
};
enum Limit {
LIMIT_MAX_BOUND_UNIFORM_SETS,
LIMIT_MAX_FRAMEBUFFER_COLOR_ATTACHMENTS,
LIMIT_MAX_TEXTURES_PER_UNIFORM_SET,
LIMIT_MAX_SAMPLERS_PER_UNIFORM_SET,
LIMIT_MAX_STORAGE_BUFFERS_PER_UNIFORM_SET,
LIMIT_MAX_STORAGE_IMAGES_PER_UNIFORM_SET,
LIMIT_MAX_UNIFORM_BUFFERS_PER_UNIFORM_SET,
LIMIT_MAX_DRAW_INDEXED_INDEX,
LIMIT_MAX_FRAMEBUFFER_HEIGHT,
LIMIT_MAX_FRAMEBUFFER_WIDTH,
LIMIT_MAX_TEXTURE_ARRAY_LAYERS,
LIMIT_MAX_TEXTURE_SIZE_1D,
LIMIT_MAX_TEXTURE_SIZE_2D,
LIMIT_MAX_TEXTURE_SIZE_3D,
LIMIT_MAX_TEXTURE_SIZE_CUBE,
LIMIT_MAX_TEXTURES_PER_SHADER_STAGE,
LIMIT_MAX_SAMPLERS_PER_SHADER_STAGE,
LIMIT_MAX_STORAGE_BUFFERS_PER_SHADER_STAGE,
LIMIT_MAX_STORAGE_IMAGES_PER_SHADER_STAGE,
LIMIT_MAX_UNIFORM_BUFFERS_PER_SHADER_STAGE,
LIMIT_MAX_PUSH_CONSTANT_SIZE,
LIMIT_MAX_UNIFORM_BUFFER_SIZE,
LIMIT_MAX_VERTEX_INPUT_ATTRIBUTE_OFFSET,
LIMIT_MAX_VERTEX_INPUT_ATTRIBUTES,
LIMIT_MAX_VERTEX_INPUT_BINDINGS,
LIMIT_MAX_VERTEX_INPUT_BINDING_STRIDE,
LIMIT_MIN_UNIFORM_BUFFER_OFFSET_ALIGNMENT,
LIMIT_MAX_COMPUTE_SHARED_MEMORY_SIZE,
LIMIT_MAX_COMPUTE_WORKGROUP_COUNT_X,
LIMIT_MAX_COMPUTE_WORKGROUP_COUNT_Y,
LIMIT_MAX_COMPUTE_WORKGROUP_COUNT_Z,
LIMIT_MAX_COMPUTE_WORKGROUP_INVOCATIONS,
LIMIT_MAX_COMPUTE_WORKGROUP_SIZE_X,
LIMIT_MAX_COMPUTE_WORKGROUP_SIZE_Y,
LIMIT_MAX_COMPUTE_WORKGROUP_SIZE_Z,
LIMIT_MAX_VIEWPORT_DIMENSIONS_X,
LIMIT_MAX_VIEWPORT_DIMENSIONS_Y,
LIMIT_SUBGROUP_SIZE,
LIMIT_SUBGROUP_MIN_SIZE,
LIMIT_SUBGROUP_MAX_SIZE,
LIMIT_SUBGROUP_IN_SHADERS, // Set flags using SHADER_STAGE_VERTEX_BIT, SHADER_STAGE_FRAGMENT_BIT, etc.
LIMIT_SUBGROUP_OPERATIONS,
LIMIT_VRS_TEXEL_WIDTH,
LIMIT_VRS_TEXEL_HEIGHT,
LIMIT_VRS_MAX_FRAGMENT_WIDTH,
LIMIT_VRS_MAX_FRAGMENT_HEIGHT,
};
enum Features {
SUPPORTS_MULTIVIEW,
SUPPORTS_FSR_HALF_FLOAT,
SUPPORTS_ATTACHMENT_VRS,
// If not supported, a fragment shader with only side effets (i.e., writes to buffers, but doesn't output to attachments), may be optimized down to no-op by the GPU driver.
SUPPORTS_FRAGMENT_SHADER_WITH_ONLY_SIDE_EFFECTS,
};
enum SubgroupOperations {
SUBGROUP_BASIC_BIT = 1,
SUBGROUP_VOTE_BIT = 2,
SUBGROUP_ARITHMETIC_BIT = 4,
SUBGROUP_BALLOT_BIT = 8,
SUBGROUP_SHUFFLE_BIT = 16,
SUBGROUP_SHUFFLE_RELATIVE_BIT = 32,
SUBGROUP_CLUSTERED_BIT = 64,
SUBGROUP_QUAD_BIT = 128,
};
////////////////////////////////////////////
// PROTECTED STUFF
// Not exposed by RenderingDevice, but shared
// with RenderingDeviceDriver for convenience.
////////////////////////////////////////////
protected:
/*****************/
/**** GENERIC ****/
/*****************/
static const char *const FORMAT_NAMES[DATA_FORMAT_MAX];
/*****************/
/**** TEXTURE ****/
/*****************/
static const uint32_t MAX_IMAGE_FORMAT_PLANES = 2;
static const uint32_t TEXTURE_SAMPLES_COUNT[TEXTURE_SAMPLES_MAX];
static uint32_t get_image_format_pixel_size(DataFormat p_format);
static void get_compressed_image_format_block_dimensions(DataFormat p_format, uint32_t &r_w, uint32_t &r_h);
uint32_t get_compressed_image_format_block_byte_size(DataFormat p_format) const;
static uint32_t get_compressed_image_format_pixel_rshift(DataFormat p_format);
static uint32_t get_image_format_required_size(DataFormat p_format, uint32_t p_width, uint32_t p_height, uint32_t p_depth, uint32_t p_mipmaps, uint32_t *r_blockw = nullptr, uint32_t *r_blockh = nullptr, uint32_t *r_depth = nullptr);
static uint32_t get_image_required_mipmaps(uint32_t p_width, uint32_t p_height, uint32_t p_depth);
static bool format_has_stencil(DataFormat p_format);
static uint32_t format_get_plane_count(DataFormat p_format);
/*****************/
/**** SAMPLER ****/
/*****************/
static const Color SAMPLER_BORDER_COLOR_VALUE[SAMPLER_BORDER_COLOR_MAX];
/**********************/
/**** VERTEX ARRAY ****/
/**********************/
static uint32_t get_format_vertex_size(DataFormat p_format);
/****************/
/**** SHADER ****/
/****************/
static const char *SHADER_STAGE_NAMES[SHADER_STAGE_MAX];
public:
struct ShaderUniform {
UniformType type = UniformType::UNIFORM_TYPE_MAX;
bool writable = false;
uint32_t binding = 0;
BitField<ShaderStage> stages;
uint32_t length = 0; // Size of arrays (in total elements), or ubos (in bytes * total elements).
bool operator!=(const ShaderUniform &p_other) const {
return binding != p_other.binding || type != p_other.type || writable != p_other.writable || stages != p_other.stages || length != p_other.length;
}
bool operator<(const ShaderUniform &p_other) const {
if (binding != p_other.binding) {
return binding < p_other.binding;
}
if (type != p_other.type) {
return type < p_other.type;
}
if (writable != p_other.writable) {
return writable < p_other.writable;
}
if (stages != p_other.stages) {
return stages < p_other.stages;
}
if (length != p_other.length) {
return length < p_other.length;
}
return false;
}
};
struct ShaderSpecializationConstant : public PipelineSpecializationConstant {
BitField<ShaderStage> stages;
bool operator<(const ShaderSpecializationConstant &p_other) const { return constant_id < p_other.constant_id; }
};
struct ShaderDescription {
uint64_t vertex_input_mask = 0;
uint32_t fragment_output_mask = 0;
bool is_compute = false;
uint32_t compute_local_size[3] = {};
uint32_t push_constant_size = 0;
Vector<Vector<ShaderUniform>> uniform_sets;
Vector<ShaderSpecializationConstant> specialization_constants;
Vector<ShaderStage> stages;
};
protected:
struct ShaderReflection : public ShaderDescription {
BitField<ShaderStage> stages;
BitField<ShaderStage> push_constant_stages;
};
};
#endif // RENDERING_DEVICE_COMMONS_H
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