Duckstation/dep/reshadefx/include/effect_module.hpp

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2023-08-13 04:03:17 +00:00
/*
* Copyright (C) 2014 Patrick Mours
* SPDX-License-Identifier: BSD-3-Clause
*/
#pragma once
#include "effect_expression.hpp"
#include <unordered_set>
namespace reshadefx
{
/// <summary>
/// A list of supported texture types.
/// </summary>
enum class texture_type
{
texture_1d = 1,
texture_2d = 2,
texture_3d = 3
};
/// <summary>
/// A list of supported texture formats.
/// </summary>
enum class texture_format
{
unknown,
r8,
r16,
r16f,
r32i,
r32u,
r32f,
rg8,
rg16,
rg16f,
rg32f,
rgba8,
rgba16,
rgba16f,
rgba32f,
rgb10a2
};
/// <summary>
/// A filtering type used for texture lookups.
/// </summary>
enum class filter_mode
{
min_mag_mip_point = 0,
min_mag_point_mip_linear = 0x1,
min_point_mag_linear_mip_point = 0x4,
min_point_mag_mip_linear = 0x5,
min_linear_mag_mip_point = 0x10,
min_linear_mag_point_mip_linear = 0x11,
min_mag_linear_mip_point = 0x14,
min_mag_mip_linear = 0x15
};
/// <summary>
/// Specifies behavior of sampling with texture coordinates outside an image.
/// </summary>
enum class texture_address_mode
{
wrap = 1,
mirror = 2,
clamp = 3,
border = 4
};
/// <summary>
/// Specifies RGB or alpha blending operations.
/// </summary>
enum class pass_blend_op : uint8_t
{
add = 1,
subtract,
reverse_subtract,
min,
max
};
/// <summary>
/// Specifies blend factors, which modulate values between the pixel shader output and render target.
/// </summary>
enum class pass_blend_factor : uint8_t
{
zero = 0,
one = 1,
source_color,
one_minus_source_color,
dest_color,
one_minus_dest_color,
source_alpha,
one_minus_source_alpha,
dest_alpha,
one_minus_dest_alpha
};
/// <summary>
/// Specifies the stencil operations that can be performed during depth-stencil testing.
/// </summary>
enum class pass_stencil_op : uint8_t
{
zero = 0,
keep,
replace,
increment_saturate,
decrement_saturate,
invert,
increment,
decrement
};
/// <summary>
/// Specifies comparison options for depth-stencil testing.
/// </summary>
enum class pass_stencil_func : uint8_t
{
never,
less,
equal,
less_equal,
greater,
not_equal,
greater_equal,
always
};
/// <summary>
/// Specifies the possible primitives.
/// </summary>
enum class primitive_topology : uint8_t
{
point_list = 1,
line_list,
line_strip,
triangle_list,
triangle_strip
};
/// <summary>
/// A struct type defined in the effect code.
/// </summary>
struct struct_info
{
std::string name;
std::string unique_name;
std::vector<struct struct_member_info> member_list;
uint32_t definition = 0;
};
/// <summary>
/// A struct field defined in the effect code.
/// </summary>
struct struct_member_info
{
reshadefx::type type;
std::string name;
std::string semantic;
reshadefx::location location;
uint32_t definition = 0;
};
/// <summary>
/// An annotation attached to a variable.
/// </summary>
struct annotation
{
reshadefx::type type;
std::string name;
reshadefx::constant value;
};
/// <summary>
/// A texture defined in the effect code.
/// </summary>
struct texture_info
{
uint32_t id = 0;
uint32_t binding = 0;
std::string name;
std::string semantic;
std::string unique_name;
std::vector<annotation> annotations;
texture_type type = texture_type::texture_2d;
uint32_t width = 1;
uint32_t height = 1;
uint16_t depth = 1;
uint16_t levels = 1;
texture_format format = texture_format::rgba8;
bool render_target = false;
bool storage_access = false;
};
/// <summary>
/// A texture sampler defined in the effect code.
/// </summary>
struct sampler_info
{
uint32_t id = 0;
uint32_t binding = 0;
uint32_t texture_binding = 0;
std::string name;
reshadefx::type type;
std::string unique_name;
std::string texture_name;
std::vector<annotation> annotations;
filter_mode filter = filter_mode::min_mag_mip_linear;
texture_address_mode address_u = texture_address_mode::clamp;
texture_address_mode address_v = texture_address_mode::clamp;
texture_address_mode address_w = texture_address_mode::clamp;
float min_lod = -3.402823466e+38f;
float max_lod = +3.402823466e+38f; // FLT_MAX
float lod_bias = 0.0f;
uint8_t srgb = false;
};
/// <summary>
/// A texture storage object defined in the effect code.
/// </summary>
struct storage_info
{
uint32_t id = 0;
uint32_t binding = 0;
std::string name;
reshadefx::type type;
std::string unique_name;
std::string texture_name;
uint16_t level = 0;
};
/// <summary>
/// An uniform variable defined in the effect code.
/// </summary>
struct uniform_info
{
std::string name;
reshadefx::type type;
uint32_t size = 0;
uint32_t offset = 0;
std::vector<annotation> annotations;
bool has_initializer_value = false;
reshadefx::constant initializer_value;
};
/// <summary>
/// Type of a shader entry point.
/// </summary>
enum class shader_type
{
vs,
ps,
cs,
};
/// <summary>
/// A shader entry point function.
/// </summary>
struct entry_point
{
std::string name;
shader_type type;
};
/// <summary>
/// A function defined in the effect code.
/// </summary>
struct function_info
{
uint32_t definition;
std::string name;
std::string unique_name;
reshadefx::type return_type;
std::string return_semantic;
std::vector<struct_member_info> parameter_list;
std::unordered_set<uint32_t> referenced_samplers;
std::unordered_set<uint32_t> referenced_storages;
};
/// <summary>
/// A render pass with all its state info.
/// </summary>
struct pass_info
{
std::string name;
std::string render_target_names[8] = {};
std::string vs_entry_point;
std::string ps_entry_point;
std::string cs_entry_point;
uint8_t generate_mipmaps = true;
uint8_t clear_render_targets = false;
uint8_t srgb_write_enable = false;
uint8_t blend_enable[8] = { false, false, false, false, false, false, false, false };
uint8_t stencil_enable = false;
uint8_t color_write_mask[8] = { 0xF, 0xF, 0xF, 0xF, 0xF, 0xF, 0xF, 0xF };
uint8_t stencil_read_mask = 0xFF;
uint8_t stencil_write_mask = 0xFF;
pass_blend_op blend_op[8] = { pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add };
pass_blend_op blend_op_alpha[8] = { pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add, pass_blend_op::add };
pass_blend_factor src_blend[8] = { pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one };
pass_blend_factor dest_blend[8] = { pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero };
pass_blend_factor src_blend_alpha[8] = { pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one, pass_blend_factor::one };
pass_blend_factor dest_blend_alpha[8] = { pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero, pass_blend_factor::zero };
pass_stencil_func stencil_comparison_func = pass_stencil_func::always;
uint32_t stencil_reference_value = 0;
pass_stencil_op stencil_op_pass = pass_stencil_op::keep;
pass_stencil_op stencil_op_fail = pass_stencil_op::keep;
pass_stencil_op stencil_op_depth_fail = pass_stencil_op::keep;
uint32_t num_vertices = 3;
primitive_topology topology = primitive_topology::triangle_list;
uint32_t viewport_width = 0;
uint32_t viewport_height = 0;
uint32_t viewport_dispatch_z = 1;
std::vector<sampler_info> samplers;
std::vector<storage_info> storages;
};
/// <summary>
/// A collection of passes that make up an effect.
/// </summary>
struct technique_info
{
std::string name;
std::vector<pass_info> passes;
std::vector<annotation> annotations;
};
/// <summary>
/// In-memory representation of an effect file.
/// </summary>
struct module
{
std::vector<char> code;
std::vector<entry_point> entry_points;
std::vector<texture_info> textures;
std::vector<sampler_info> samplers;
std::vector<storage_info> storages;
std::vector<uniform_info> uniforms, spec_constants;
std::vector<technique_info> techniques;
uint32_t total_uniform_size = 0;
uint32_t num_texture_bindings = 0;
uint32_t num_sampler_bindings = 0;
uint32_t num_storage_bindings = 0;
};
}