753 lines
20 KiB
C++
753 lines
20 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2020 Blender Foundation. All rights reserved. */
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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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#include "BLI_assert.h"
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#include "GPU_vertex_buffer.h"
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#include "gpu_framebuffer_private.hh"
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namespace blender {
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namespace gpu {
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typedef enum eGPUTextureFormatFlag {
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GPU_FORMAT_DEPTH = (1 << 0),
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GPU_FORMAT_STENCIL = (1 << 1),
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GPU_FORMAT_INTEGER = (1 << 2),
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GPU_FORMAT_FLOAT = (1 << 3),
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GPU_FORMAT_COMPRESSED = (1 << 4),
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GPU_FORMAT_DEPTH_STENCIL = (GPU_FORMAT_DEPTH | GPU_FORMAT_STENCIL),
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} eGPUTextureFormatFlag;
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ENUM_OPERATORS(eGPUTextureFormatFlag, GPU_FORMAT_DEPTH_STENCIL)
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typedef enum eGPUTextureType {
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GPU_TEXTURE_1D = (1 << 0),
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GPU_TEXTURE_2D = (1 << 1),
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GPU_TEXTURE_3D = (1 << 2),
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GPU_TEXTURE_CUBE = (1 << 3),
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GPU_TEXTURE_ARRAY = (1 << 4),
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GPU_TEXTURE_BUFFER = (1 << 5),
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GPU_TEXTURE_1D_ARRAY = (GPU_TEXTURE_1D | GPU_TEXTURE_ARRAY),
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GPU_TEXTURE_2D_ARRAY = (GPU_TEXTURE_2D | GPU_TEXTURE_ARRAY),
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GPU_TEXTURE_CUBE_ARRAY = (GPU_TEXTURE_CUBE | GPU_TEXTURE_ARRAY),
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} eGPUTextureType;
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ENUM_OPERATORS(eGPUTextureType, GPU_TEXTURE_CUBE_ARRAY)
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/* Format types for samplers within the shader.
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* This covers the sampler format type permutations within GLSL/MSL. */
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typedef enum eGPUSamplerFormat {
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GPU_SAMPLER_TYPE_FLOAT = 0,
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GPU_SAMPLER_TYPE_INT = 1,
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GPU_SAMPLER_TYPE_UINT = 2,
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/* Special case for depth, as these require differing dummy formats. */
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GPU_SAMPLER_TYPE_DEPTH = 3,
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GPU_SAMPLER_TYPE_MAX = 4
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} eGPUSamplerFormat;
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ENUM_OPERATORS(eGPUSamplerFormat, GPU_SAMPLER_TYPE_UINT)
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#ifdef DEBUG
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# define DEBUG_NAME_LEN 64
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#else
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# define DEBUG_NAME_LEN 8
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#endif
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/* Maximum number of FBOs a texture can be attached to. */
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#define GPU_TEX_MAX_FBO_ATTACHED 32
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/**
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* Implementation of Textures.
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* Base class which is then specialized for each implementation (GL, VK, ...).
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*/
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class Texture {
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public:
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/** Internal Sampler state. */
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eGPUSamplerState sampler_state = GPU_SAMPLER_DEFAULT;
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/** Reference counter. */
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int refcount = 1;
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/** Width & Height (of source data), optional. */
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int src_w = 0, src_h = 0;
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#ifndef GPU_NO_USE_PY_REFERENCES
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/**
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* Reference of a pointer that needs to be cleaned when deallocating the texture.
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* Points to #BPyGPUTexture.tex
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*/
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void **py_ref = nullptr;
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#endif
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protected:
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/* ---- Texture format (immutable after init). ---- */
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/** Width & Height & Depth. For cube-map arrays, d is number of face-layers. */
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int w_, h_, d_;
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/** Internal data format. */
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eGPUTextureFormat format_;
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/** Format characteristics. */
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eGPUTextureFormatFlag format_flag_;
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/** Texture type. */
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eGPUTextureType type_;
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/** Texture usage flags. */
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eGPUTextureUsage gpu_image_usage_flags_;
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/** Number of mipmaps this texture has (Max miplvl). */
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/* TODO(fclem): Should become immutable and the need for mipmaps should be specified upfront. */
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int mipmaps_ = -1;
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/** For error checking */
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int mip_min_ = 0, mip_max_ = 0;
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/** For debugging */
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char name_[DEBUG_NAME_LEN];
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/** Frame-buffer references to update on deletion. */
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GPUAttachmentType fb_attachment_[GPU_TEX_MAX_FBO_ATTACHED];
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FrameBuffer *fb_[GPU_TEX_MAX_FBO_ATTACHED];
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public:
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Texture(const char *name);
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virtual ~Texture();
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/* Return true on success. */
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bool init_1D(int w, int layers, int mip_len, eGPUTextureFormat format);
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bool init_2D(int w, int h, int layers, int mip_len, eGPUTextureFormat format);
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bool init_3D(int w, int h, int d, int mip_len, eGPUTextureFormat format);
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bool init_cubemap(int w, int layers, int mip_len, eGPUTextureFormat format);
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bool init_buffer(GPUVertBuf *vbo, eGPUTextureFormat format);
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bool init_view(const GPUTexture *src,
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eGPUTextureFormat format,
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eGPUTextureType type,
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int mip_start,
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int mip_len,
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int layer_start,
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int layer_len,
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bool cube_as_array);
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virtual void generate_mipmap() = 0;
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virtual void copy_to(Texture *tex) = 0;
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virtual void clear(eGPUDataFormat format, const void *data) = 0;
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virtual void swizzle_set(const char swizzle_mask[4]) = 0;
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virtual void stencil_texture_mode_set(bool use_stencil) = 0;
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virtual void mip_range_set(int min, int max) = 0;
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virtual void *read(int mip, eGPUDataFormat format) = 0;
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void attach_to(FrameBuffer *fb, GPUAttachmentType type);
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void detach_from(FrameBuffer *fb);
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void update(eGPUDataFormat format, const void *data);
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void usage_set(eGPUTextureUsage usage_flags);
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virtual void update_sub(
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int mip, int offset[3], int extent[3], eGPUDataFormat format, const void *data) = 0;
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virtual void update_sub(int offset[3],
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int extent[3],
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eGPUDataFormat format,
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GPUPixelBuffer *pixbuf) = 0;
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/* TODO(fclem): Legacy. Should be removed at some point. */
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virtual uint gl_bindcode_get() const = 0;
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int width_get() const
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{
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return w_;
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}
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int height_get() const
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{
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return h_;
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}
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int depth_get() const
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{
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return d_;
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}
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eGPUTextureUsage usage_get() const
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{
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return gpu_image_usage_flags_;
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}
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void mip_size_get(int mip, int r_size[3]) const
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{
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/* TODO: assert if lvl is below the limit of 1px in each dimension. */
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int div = 1 << mip;
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r_size[0] = max_ii(1, w_ / div);
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if (type_ == GPU_TEXTURE_1D_ARRAY) {
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r_size[1] = h_;
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}
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else if (h_ > 0) {
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r_size[1] = max_ii(1, h_ / div);
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}
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if (type_ & (GPU_TEXTURE_ARRAY | GPU_TEXTURE_CUBE)) {
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r_size[2] = d_;
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}
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else if (d_ > 0) {
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r_size[2] = max_ii(1, d_ / div);
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}
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}
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int mip_width_get(int mip) const
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{
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return max_ii(1, w_ / (1 << mip));
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}
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int mip_height_get(int mip) const
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{
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return (type_ == GPU_TEXTURE_1D_ARRAY) ? h_ : max_ii(1, h_ / (1 << mip));
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}
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int mip_depth_get(int mip) const
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{
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return (type_ & (GPU_TEXTURE_ARRAY | GPU_TEXTURE_CUBE)) ? d_ : max_ii(1, d_ / (1 << mip));
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}
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/* Return number of dimension taking the array type into account. */
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int dimensions_count() const
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{
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const int array = (type_ & GPU_TEXTURE_ARRAY) ? 1 : 0;
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switch (type_ & ~GPU_TEXTURE_ARRAY) {
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case GPU_TEXTURE_BUFFER:
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return 1;
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case GPU_TEXTURE_1D:
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return 1 + array;
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case GPU_TEXTURE_2D:
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return 2 + array;
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case GPU_TEXTURE_CUBE:
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case GPU_TEXTURE_3D:
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default:
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return 3;
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}
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}
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/* Return number of array layer (or face layer) for texture array or 1 for the others. */
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int layer_count() const
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{
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switch (type_) {
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case GPU_TEXTURE_1D_ARRAY:
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return h_;
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case GPU_TEXTURE_2D_ARRAY:
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case GPU_TEXTURE_CUBE_ARRAY:
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return d_;
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default:
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return 1;
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}
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}
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int mip_count() const
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{
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return mipmaps_;
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}
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eGPUTextureFormat format_get() const
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{
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return format_;
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}
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eGPUTextureFormatFlag format_flag_get() const
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{
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return format_flag_;
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}
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eGPUTextureType type_get() const
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{
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return type_;
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}
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GPUAttachmentType attachment_type(int slot) const
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{
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switch (format_) {
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case GPU_DEPTH_COMPONENT32F:
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case GPU_DEPTH_COMPONENT24:
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case GPU_DEPTH_COMPONENT16:
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BLI_assert(slot == 0);
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return GPU_FB_DEPTH_ATTACHMENT;
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case GPU_DEPTH24_STENCIL8:
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case GPU_DEPTH32F_STENCIL8:
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BLI_assert(slot == 0);
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return GPU_FB_DEPTH_STENCIL_ATTACHMENT;
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default:
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return GPU_FB_COLOR_ATTACHMENT0 + slot;
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}
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}
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protected:
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virtual bool init_internal() = 0;
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virtual bool init_internal(GPUVertBuf *vbo) = 0;
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virtual bool init_internal(const GPUTexture *src, int mip_offset, int layer_offset) = 0;
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};
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/* Syntactic sugar. */
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static inline GPUTexture *wrap(Texture *vert)
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{
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return reinterpret_cast<GPUTexture *>(vert);
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}
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static inline Texture *unwrap(GPUTexture *vert)
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{
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return reinterpret_cast<Texture *>(vert);
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}
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static inline const Texture *unwrap(const GPUTexture *vert)
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{
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return reinterpret_cast<const Texture *>(vert);
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}
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/* GPU pixel Buffer. */
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class PixelBuffer {
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protected:
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uint size_ = 0;
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public:
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PixelBuffer(uint size) : size_(size){};
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virtual ~PixelBuffer(){};
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virtual void *map() = 0;
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virtual void unmap() = 0;
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virtual int64_t get_native_handle() = 0;
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virtual uint get_size() = 0;
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};
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/* Syntactic sugar. */
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static inline GPUPixelBuffer *wrap(PixelBuffer *pixbuf)
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{
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return reinterpret_cast<GPUPixelBuffer *>(pixbuf);
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}
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static inline PixelBuffer *unwrap(GPUPixelBuffer *pixbuf)
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{
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return reinterpret_cast<PixelBuffer *>(pixbuf);
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}
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static inline const PixelBuffer *unwrap(const GPUPixelBuffer *pixbuf)
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{
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return reinterpret_cast<const PixelBuffer *>(pixbuf);
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}
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#undef DEBUG_NAME_LEN
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inline size_t to_bytesize(eGPUTextureFormat format)
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{
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switch (format) {
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case GPU_RGBA32F:
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return 32;
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case GPU_RG32F:
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case GPU_RGBA16F:
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case GPU_RGBA16:
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return 16;
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case GPU_RGB16F:
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return 12;
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case GPU_DEPTH32F_STENCIL8: /* 32-bit depth, 8 bits stencil, and 24 unused bits. */
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return 8;
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case GPU_RG16F:
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case GPU_RG16I:
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case GPU_RG16UI:
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case GPU_RG16:
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case GPU_DEPTH24_STENCIL8:
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case GPU_DEPTH_COMPONENT32F:
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case GPU_RGBA8UI:
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case GPU_RGBA8:
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case GPU_SRGB8_A8:
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case GPU_RGB10_A2:
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case GPU_R11F_G11F_B10F:
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case GPU_R32F:
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case GPU_R32UI:
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case GPU_R32I:
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return 4;
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case GPU_DEPTH_COMPONENT24:
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return 3;
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case GPU_DEPTH_COMPONENT16:
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case GPU_R16F:
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case GPU_R16UI:
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case GPU_R16I:
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case GPU_RG8:
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case GPU_R16:
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return 2;
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case GPU_R8:
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case GPU_R8UI:
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return 1;
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case GPU_SRGB8_A8_DXT1:
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case GPU_SRGB8_A8_DXT3:
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case GPU_SRGB8_A8_DXT5:
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case GPU_RGBA8_DXT1:
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case GPU_RGBA8_DXT3:
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case GPU_RGBA8_DXT5:
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return 1; /* Incorrect but actual size is fractional. */
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default:
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BLI_assert_msg(0, "Texture format incorrect or unsupported");
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return 0;
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}
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}
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inline size_t to_block_size(eGPUTextureFormat data_type)
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{
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switch (data_type) {
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case GPU_SRGB8_A8_DXT1:
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case GPU_RGBA8_DXT1:
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return 8;
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case GPU_SRGB8_A8_DXT3:
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case GPU_SRGB8_A8_DXT5:
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case GPU_RGBA8_DXT3:
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case GPU_RGBA8_DXT5:
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return 16;
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default:
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BLI_assert_msg(0, "Texture format is not a compressed format");
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return 0;
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}
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}
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inline eGPUTextureFormatFlag to_format_flag(eGPUTextureFormat format)
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{
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switch (format) {
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case GPU_DEPTH_COMPONENT24:
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case GPU_DEPTH_COMPONENT16:
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case GPU_DEPTH_COMPONENT32F:
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return GPU_FORMAT_DEPTH;
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case GPU_DEPTH24_STENCIL8:
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case GPU_DEPTH32F_STENCIL8:
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return GPU_FORMAT_DEPTH_STENCIL;
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case GPU_R8UI:
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case GPU_RG16I:
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case GPU_R16I:
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case GPU_RG16UI:
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case GPU_R16UI:
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case GPU_R32UI:
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return GPU_FORMAT_INTEGER;
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case GPU_SRGB8_A8_DXT1:
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case GPU_SRGB8_A8_DXT3:
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case GPU_SRGB8_A8_DXT5:
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case GPU_RGBA8_DXT1:
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case GPU_RGBA8_DXT3:
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case GPU_RGBA8_DXT5:
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return GPU_FORMAT_COMPRESSED;
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default:
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return GPU_FORMAT_FLOAT;
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}
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}
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inline int to_component_len(eGPUTextureFormat format)
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{
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switch (format) {
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case GPU_RGBA8:
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case GPU_RGBA8I:
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case GPU_RGBA8UI:
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case GPU_RGBA16:
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case GPU_RGBA16F:
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case GPU_RGBA16I:
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case GPU_RGBA16UI:
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case GPU_RGBA32F:
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case GPU_RGBA32I:
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case GPU_RGBA32UI:
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case GPU_SRGB8_A8:
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case GPU_RGB10_A2:
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return 4;
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case GPU_RGB16F:
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case GPU_R11F_G11F_B10F:
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return 3;
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case GPU_RG8:
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case GPU_RG8I:
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case GPU_RG8UI:
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case GPU_RG16:
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case GPU_RG16F:
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case GPU_RG16I:
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case GPU_RG16UI:
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case GPU_RG32F:
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case GPU_RG32I:
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case GPU_RG32UI:
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return 2;
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default:
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return 1;
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}
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}
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inline size_t to_bytesize(eGPUDataFormat data_format)
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{
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switch (data_format) {
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case GPU_DATA_UBYTE:
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return 1;
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case GPU_DATA_HALF_FLOAT:
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return 2;
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case GPU_DATA_FLOAT:
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case GPU_DATA_INT:
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case GPU_DATA_UINT:
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return 4;
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case GPU_DATA_UINT_24_8:
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case GPU_DATA_10_11_11_REV:
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case GPU_DATA_2_10_10_10_REV:
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return 4;
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default:
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BLI_assert_msg(0, "Data format incorrect or unsupported");
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return 0;
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}
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}
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inline size_t to_bytesize(eGPUTextureFormat tex_format, eGPUDataFormat data_format)
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{
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/* Special case for compacted types.
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* Standard component len calculation does not apply, as the texture formats contain multiple
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* channels, but associated data format contains several compacted components. */
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if ((tex_format == GPU_R11F_G11F_B10F && data_format == GPU_DATA_10_11_11_REV) ||
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(tex_format == GPU_RGB10_A2 && data_format == GPU_DATA_2_10_10_10_REV)) {
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return 4;
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}
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return to_component_len(tex_format) * to_bytesize(data_format);
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}
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/* Definitely not complete, edit according to the gl specification. */
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inline bool validate_data_format(eGPUTextureFormat tex_format, eGPUDataFormat data_format)
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{
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switch (tex_format) {
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case GPU_DEPTH_COMPONENT24:
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case GPU_DEPTH_COMPONENT16:
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case GPU_DEPTH_COMPONENT32F:
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return ELEM(data_format, GPU_DATA_FLOAT, GPU_DATA_UINT);
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case GPU_DEPTH24_STENCIL8:
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case GPU_DEPTH32F_STENCIL8:
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return ELEM(data_format, GPU_DATA_UINT_24_8, GPU_DATA_UINT);
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case GPU_R16UI:
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case GPU_RG16UI:
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case GPU_RGBA16UI:
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case GPU_R32UI:
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case GPU_RG32UI:
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case GPU_RGBA32UI:
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return data_format == GPU_DATA_UINT;
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case GPU_R8I:
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case GPU_RG8I:
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case GPU_RGBA8I:
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case GPU_R16I:
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case GPU_RG16I:
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case GPU_RGBA16I:
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case GPU_R32I:
|
|
case GPU_RG32I:
|
|
case GPU_RGBA32I:
|
|
return data_format == GPU_DATA_INT;
|
|
case GPU_R8:
|
|
case GPU_RG8:
|
|
case GPU_RGBA8:
|
|
case GPU_R8UI:
|
|
case GPU_RG8UI:
|
|
case GPU_RGBA8UI:
|
|
case GPU_SRGB8_A8:
|
|
return ELEM(data_format, GPU_DATA_UBYTE, GPU_DATA_FLOAT);
|
|
case GPU_RGB10_A2:
|
|
return ELEM(data_format, GPU_DATA_2_10_10_10_REV, GPU_DATA_FLOAT);
|
|
case GPU_R11F_G11F_B10F:
|
|
return ELEM(data_format, GPU_DATA_10_11_11_REV, GPU_DATA_FLOAT);
|
|
case GPU_RGBA16F:
|
|
return ELEM(data_format, GPU_DATA_HALF_FLOAT, GPU_DATA_FLOAT);
|
|
default:
|
|
return data_format == GPU_DATA_FLOAT;
|
|
}
|
|
}
|
|
|
|
/* Ensure valid upload formats. With format conversion support, certain types can be extended to
|
|
* allow upload from differing source formats. If these cases are added, amend accordingly. */
|
|
inline bool validate_data_format_mtl(eGPUTextureFormat tex_format, eGPUDataFormat data_format)
|
|
{
|
|
switch (tex_format) {
|
|
case GPU_DEPTH_COMPONENT24:
|
|
case GPU_DEPTH_COMPONENT16:
|
|
case GPU_DEPTH_COMPONENT32F:
|
|
return ELEM(data_format, GPU_DATA_FLOAT, GPU_DATA_UINT);
|
|
case GPU_DEPTH24_STENCIL8:
|
|
case GPU_DEPTH32F_STENCIL8:
|
|
/* Data can be provided as a 4-byte UINT. */
|
|
return ELEM(data_format, GPU_DATA_UINT_24_8, GPU_DATA_UINT);
|
|
case GPU_R8UI:
|
|
case GPU_R16UI:
|
|
case GPU_RG16UI:
|
|
case GPU_R32UI:
|
|
case GPU_RGBA32UI:
|
|
case GPU_RGBA16UI:
|
|
case GPU_RG8UI:
|
|
case GPU_RG32UI:
|
|
return data_format == GPU_DATA_UINT;
|
|
case GPU_R32I:
|
|
case GPU_RG16I:
|
|
case GPU_R16I:
|
|
case GPU_RGBA8I:
|
|
case GPU_RGBA32I:
|
|
case GPU_RGBA16I:
|
|
case GPU_RG8I:
|
|
case GPU_RG32I:
|
|
case GPU_R8I:
|
|
return data_format == GPU_DATA_INT;
|
|
case GPU_R8:
|
|
case GPU_RG8:
|
|
case GPU_RGBA8:
|
|
case GPU_RGBA8_DXT1:
|
|
case GPU_RGBA8_DXT3:
|
|
case GPU_RGBA8_DXT5:
|
|
case GPU_RGBA8UI:
|
|
case GPU_SRGB8_A8:
|
|
case GPU_SRGB8_A8_DXT1:
|
|
case GPU_SRGB8_A8_DXT3:
|
|
case GPU_SRGB8_A8_DXT5:
|
|
return ELEM(data_format, GPU_DATA_UBYTE, GPU_DATA_FLOAT);
|
|
case GPU_RGB10_A2:
|
|
return ELEM(data_format, GPU_DATA_2_10_10_10_REV, GPU_DATA_FLOAT);
|
|
case GPU_R11F_G11F_B10F:
|
|
return ELEM(data_format, GPU_DATA_10_11_11_REV, GPU_DATA_FLOAT);
|
|
case GPU_RGBA16F:
|
|
return ELEM(data_format, GPU_DATA_HALF_FLOAT, GPU_DATA_FLOAT);
|
|
case GPU_RGBA32F:
|
|
case GPU_RGBA16:
|
|
case GPU_RG32F:
|
|
case GPU_RG16F:
|
|
case GPU_RG16:
|
|
case GPU_R32F:
|
|
case GPU_R16F:
|
|
case GPU_R16:
|
|
case GPU_RGB16F:
|
|
return data_format == GPU_DATA_FLOAT;
|
|
default:
|
|
BLI_assert_msg(0, "Unrecognized data format");
|
|
return data_format == GPU_DATA_FLOAT;
|
|
}
|
|
}
|
|
|
|
inline eGPUDataFormat to_data_format(eGPUTextureFormat tex_format)
|
|
{
|
|
switch (tex_format) {
|
|
case GPU_DEPTH_COMPONENT24:
|
|
case GPU_DEPTH_COMPONENT16:
|
|
case GPU_DEPTH_COMPONENT32F:
|
|
return GPU_DATA_FLOAT;
|
|
case GPU_DEPTH24_STENCIL8:
|
|
case GPU_DEPTH32F_STENCIL8:
|
|
return GPU_DATA_UINT_24_8;
|
|
case GPU_R16UI:
|
|
case GPU_R32UI:
|
|
case GPU_RG16UI:
|
|
case GPU_RG32UI:
|
|
case GPU_RGBA16UI:
|
|
case GPU_RGBA32UI:
|
|
return GPU_DATA_UINT;
|
|
case GPU_R16I:
|
|
case GPU_R32I:
|
|
case GPU_R8I:
|
|
case GPU_RG16I:
|
|
case GPU_RG32I:
|
|
case GPU_RG8I:
|
|
case GPU_RGBA16I:
|
|
case GPU_RGBA32I:
|
|
case GPU_RGBA8I:
|
|
return GPU_DATA_INT;
|
|
case GPU_R8:
|
|
case GPU_R8UI:
|
|
case GPU_RG8:
|
|
case GPU_RG8UI:
|
|
case GPU_RGBA8:
|
|
case GPU_RGBA8UI:
|
|
case GPU_SRGB8_A8:
|
|
return GPU_DATA_UBYTE;
|
|
case GPU_RGB10_A2:
|
|
return GPU_DATA_2_10_10_10_REV;
|
|
case GPU_R11F_G11F_B10F:
|
|
return GPU_DATA_10_11_11_REV;
|
|
default:
|
|
return GPU_DATA_FLOAT;
|
|
}
|
|
}
|
|
|
|
inline eGPUFrameBufferBits to_framebuffer_bits(eGPUTextureFormat tex_format)
|
|
{
|
|
switch (tex_format) {
|
|
case GPU_DEPTH_COMPONENT24:
|
|
case GPU_DEPTH_COMPONENT16:
|
|
case GPU_DEPTH_COMPONENT32F:
|
|
return GPU_DEPTH_BIT;
|
|
case GPU_DEPTH24_STENCIL8:
|
|
case GPU_DEPTH32F_STENCIL8:
|
|
return GPU_DEPTH_BIT | GPU_STENCIL_BIT;
|
|
default:
|
|
return GPU_COLOR_BIT;
|
|
}
|
|
}
|
|
|
|
static inline eGPUTextureFormat to_texture_format(const GPUVertFormat *format)
|
|
{
|
|
if (format->attr_len == 0) {
|
|
BLI_assert_msg(0, "Incorrect vertex format for buffer texture");
|
|
return GPU_DEPTH_COMPONENT24;
|
|
}
|
|
switch (format->attrs[0].comp_len) {
|
|
case 1:
|
|
switch (format->attrs[0].comp_type) {
|
|
case GPU_COMP_I8:
|
|
return GPU_R8I;
|
|
case GPU_COMP_U8:
|
|
return GPU_R8UI;
|
|
case GPU_COMP_I16:
|
|
return GPU_R16I;
|
|
case GPU_COMP_U16:
|
|
return GPU_R16UI;
|
|
case GPU_COMP_I32:
|
|
return GPU_R32I;
|
|
case GPU_COMP_U32:
|
|
return GPU_R32UI;
|
|
case GPU_COMP_F32:
|
|
return GPU_R32F;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case 2:
|
|
switch (format->attrs[0].comp_type) {
|
|
case GPU_COMP_I8:
|
|
return GPU_RG8I;
|
|
case GPU_COMP_U8:
|
|
return GPU_RG8UI;
|
|
case GPU_COMP_I16:
|
|
return GPU_RG16I;
|
|
case GPU_COMP_U16:
|
|
return GPU_RG16UI;
|
|
case GPU_COMP_I32:
|
|
return GPU_RG32I;
|
|
case GPU_COMP_U32:
|
|
return GPU_RG32UI;
|
|
case GPU_COMP_F32:
|
|
return GPU_RG32F;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case 3:
|
|
/* Not supported until GL 4.0 */
|
|
break;
|
|
case 4:
|
|
switch (format->attrs[0].comp_type) {
|
|
case GPU_COMP_I8:
|
|
return GPU_RGBA8I;
|
|
case GPU_COMP_U8:
|
|
return GPU_RGBA8UI;
|
|
case GPU_COMP_I16:
|
|
return GPU_RGBA16I;
|
|
case GPU_COMP_U16:
|
|
/* NOTE: Checking the fetch mode to select the right GPU texture format. This can be
|
|
* added to other formats as well. */
|
|
switch (format->attrs[0].fetch_mode) {
|
|
case GPU_FETCH_INT:
|
|
return GPU_RGBA16UI;
|
|
case GPU_FETCH_INT_TO_FLOAT_UNIT:
|
|
return GPU_RGBA16;
|
|
case GPU_FETCH_INT_TO_FLOAT:
|
|
return GPU_RGBA16F;
|
|
case GPU_FETCH_FLOAT:
|
|
return GPU_RGBA16F;
|
|
}
|
|
case GPU_COMP_I32:
|
|
return GPU_RGBA32I;
|
|
case GPU_COMP_U32:
|
|
return GPU_RGBA32UI;
|
|
case GPU_COMP_F32:
|
|
return GPU_RGBA32F;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
BLI_assert_msg(0, "Unsupported vertex format for buffer texture");
|
|
return GPU_DEPTH_COMPONENT24;
|
|
}
|
|
|
|
} // namespace gpu
|
|
} // namespace blender
|