rpcsx/rpcs3/Emu/RSX/Common/TextureUtils.h

#pragma once

#include "../RSXTexture.h"

#include <vector>
#include "Utilities/GSL.h"

struct rsx_subresource_layout
{
	gsl::span<const gsl::byte> data;
	u16 width_in_block;
	u16 height_in_block;
	u16 depth;
	u32 pitch_in_bytes;
};

/**
* Get size to store texture in a linear fashion.
* Storage is assumed to use a rowPitchAlignement boundary for every row of texture.
*/
size_t get_placed_texture_storage_size(const rsx::texture &texture, size_t row_pitch_alignement, size_t mipmap_alignment = 0x200);
size_t get_placed_texture_storage_size(const rsx::vertex_texture &texture, size_t row_pitch_alignement, size_t mipmap_alignment = 0x200);

/**
 * get all rsx_subresource_layout for texture.
 * The subresources are ordered per layer then per mipmap level (as in rsx memory).
 */
std::vector<rsx_subresource_layout> get_subresources_layout(const rsx::texture &texture);
std::vector<rsx_subresource_layout> get_subresources_layout(const rsx::vertex_texture &texture);

void upload_texture_subresource(gsl::span<gsl::byte> dst_buffer, const rsx_subresource_layout &src_layout, int format, bool is_swizzled, size_t dst_row_pitch_multiple_of);

u8 get_format_block_size_in_bytes(int format);
u8 get_format_block_size_in_texel(int format);

/**
* Get number of bytes occupied by texture in RSX mem
*/
size_t get_texture_size(const rsx::texture &texture);
size_t get_texture_size(const rsx::vertex_texture &texture);