57552f52b2
This patch adds support for compilation and execution of GLSL compute shaders. This, along with a few systematic changes and fixes, enable realtime compositor functionality with the Metal backend on macOS. A number of GLSL source modifications have been made to add the required level of type explicitness, allowing all compilations to succeed. GLSL Compute shader compilation follows a similar path to Vertex/Fragment translation, with added support for shader atomics, shared memory blocks and barriers. Texture flags have also been updated to ensure correct read/write specification for textures used within the compositor pipeline. GPU command submission changes have also been made in the high level path, when Metal is used, to address command buffer time-outs caused by certain expensive compute shaders. Authored by Apple: Michael Parkin-White Ref T96261 Ref T99210 Reviewed By: fclem Maniphest Tasks: T99210, T96261 Differential Revision: https://developer.blender.org/D16990
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup gpu
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*/
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#pragma once
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namespace blender {
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namespace gpu {
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/*** Derived from: https://developer.apple.com/metal/Metal-Feature-Set-Tables.pdf ***/
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/** Upper Bound/Fixed Limits **/
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#define MTL_MAX_TEXTURE_SLOTS 128
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#define MTL_MAX_SAMPLER_SLOTS MTL_MAX_TEXTURE_SLOTS
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/* Max limit without using bind-less for samplers. */
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#define MTL_MAX_DEFAULT_SAMPLERS 16
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/* Total maximum buffers which can be bound to an encoder, for use within a shader.
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* MTL_MAX_UNIFORM_BUFFER_BINDINGS + MTL_MAX_STORAGE_BUFFER_BINDINGS must be <=
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* than MTL_MAX_BUFFER_BINDINGS. */
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#define MTL_MAX_BUFFER_BINDINGS 31
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#define MTL_MAX_UNIFORM_BUFFER_BINDINGS 16
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#define MTL_MAX_STORAGE_BUFFER_BINDINGS 12
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#define MTL_MAX_VERTEX_INPUT_ATTRIBUTES 31
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#define MTL_MAX_UNIFORMS_PER_BLOCK 64
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static_assert((MTL_MAX_UNIFORM_BUFFER_BINDINGS + MTL_MAX_STORAGE_BUFFER_BINDINGS) <=
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MTL_MAX_BUFFER_BINDINGS);
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/* Context-specific limits -- populated in 'MTLBackend::platform_init' */
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struct MTLCapabilities {
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/* Variable Limits & feature sets. */
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int max_color_render_targets = 4; /* Minimum = 4 */
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int buffer_alignment_for_textures = 256; /* Upper bound = 256 bytes */
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int minimum_buffer_offset_alignment = 256; /* Upper bound = 256 bytes */
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/* Capabilities */
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bool supports_vertex_amplification = false;
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bool supports_texture_swizzle = true;
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bool supports_cubemaps = true;
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bool supports_layered_rendering = true;
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bool supports_memory_barriers = false;
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bool supports_sampler_border_color = false;
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bool supports_argument_buffers_tier2 = false;
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bool supports_texture_gather = false;
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/* GPU Family */
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bool supports_family_mac1 = false;
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bool supports_family_mac2 = false;
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bool supports_family_mac_catalyst1 = false;
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bool supports_family_mac_catalyst2 = false;
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};
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} // namespace gpu
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} // namespace blender
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