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65d791f677
sokol-luajit/projects/examples/samples/flecs_sapp.lua
dlannan 65d791f677 Added flecs. With sample
2026-09-03 12:05:15 +09:30

264 lines
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Lua
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package.path = package.path..";../../?.lua"
local dirtools = require("tools.vfs.dirtools").init("sokol%-luajit")
--_G.SOKOL_DLL = "sokol_debug_dll"
local sapp = require("sokol_app")
sg = require("sokol_gfx")
local slib = require("sokol_libs") -- Warn - always after gfx!!
local flecs = require("ffi.flecs.flecs")
local hmm = require("hmm")
local hutils = require("hmm_utils")
local utils = require("utils")
require("engine.platform")
local ffi = require("ffi")
-- --------------------------------------------------------------------------------------
ffi.cdef[[
/* application state */
typedef struct state {
float rx, ry;
sg_pipeline pip;
sg_bindings* bind;
} state;
]]
-- --------------------------------------------------------------------------------------
-- The nice way to take a glsl shader and load, compile and return a shader description
local shc = require("tools.shader_compiler.shc_compile").init( "sokol%-luajit", false )
local shader = shc.compile("./projects/examples/samples/cube-sapp.glsl", "cube")
-- --------------------------------------------------------------------------------------
local function logout(tag, log_level, log_item, message, line_nr, filename, user_data)
print("-------->>> ")
print(tag.." "..log_level.." "..log_item.." "..message.." "..line_nr.." "..filename)
end
-- --------------------------------------------------------------------------------------
local state = ffi.new("state[1]")
local sg_range = ffi.new("sg_range[1]")
local binding = ffi.new("sg_bindings[1]", {})
local world = nil
local rest = ffi.new("EcsRest[1]")
rest[0].port = 27750
local e1, e2
ffi.cdef[[
typedef struct {
float x;
float y;
} Position;
]]
local newpos = ffi.new("Position[1]", { { 100, 200 } })
local function component(world, name)
local desc = ffi.new("ecs_component_desc_t[1]")
desc[0].entity = 0
desc[0].type.size = ffi.sizeof(name)
desc[0].type.alignment = ffi.alignof(name)
local id = flecs.ecs_component_init(world, desc)
assert(id ~= 0, "failed to register component: " .. name)
flecs.ecs_set_name(world, id, name);
return id
end
local function tag(world, name)
local desc = ffi.new("ecs_entity_desc_t[1]")
desc[0].name = name
return flecs.ecs_entity_init(world, desc)
end
local function ecs_set(world, entity, component, dataptr)
flecs.ecs_set_id(world, entity, component, ffi.sizeof(dataptr[0]), dataptr )
end
local Position, Walking = nil, nil
local bob
local function init()
world = flecs.ecs_init()
flecs.ecs_set_id( world, flecs.EcsWorld, flecs.FLECS_IDEcsRestID_, ffi.sizeof(rest[0]), rest )
Position = component(world, "Position")
Walking = tag(world, "Walking")
bob = flecs.ecs_set_name(world, 0, "Bob");
ecs_set(world, bob, Position, newpos)
flecs.ecs_add_id(world, bob, Walking)
local ent = flecs.ecs_get_id(world, bob, Position)
ent = ffi.cast("Position *", ent)
print("X: ", ent[0].x, "Y:", ent[0].y )
local desc = ffi.new("sg_desc[1]")
desc[0].environment = slib.sglue_environment()
desc[0].logger.func = slib.slog_func
desc[0].disable_validation = false
sg.sg_setup( desc )
win.Sleep(10)
print("Sokol Is Valid: "..tostring(sg.sg_isvalid()))
local vertices = ffi.new("float[168]", {
-1.0, -1.0, -1.0, 1.0, 0.0, 0.0, 1.0,
1.0, -1.0, -1.0, 1.0, 0.0, 0.0, 1.0,
1.0, 1.0, -1.0, 1.0, 0.0, 0.0, 1.0,
-1.0, 1.0, -1.0, 1.0, 0.0, 0.0, 1.0,
-1.0, -1.0, 1.0, 0.0, 1.0, 0.0, 1.0,
1.0, -1.0, 1.0, 0.0, 1.0, 0.0, 1.0,
1.0, 1.0, 1.0, 0.0, 1.0, 0.0, 1.0,
-1.0, 1.0, 1.0, 0.0, 1.0, 0.0, 1.0,
-1.0, -1.0, -1.0, 0.0, 0.0, 1.0, 1.0,
-1.0, 1.0, -1.0, 0.0, 0.0, 1.0, 1.0,
-1.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
-1.0, -1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
1.0, -1.0, -1.0, 1.0, 0.5, 0.0, 1.0,
1.0, 1.0, -1.0, 1.0, 0.5, 0.0, 1.0,
1.0, 1.0, 1.0, 1.0, 0.5, 0.0, 1.0,
1.0, -1.0, 1.0, 1.0, 0.5, 0.0, 1.0,
-1.0, -1.0, -1.0, 0.0, 0.5, 1.0, 1.0,
-1.0, -1.0, 1.0, 0.0, 0.5, 1.0, 1.0,
1.0, -1.0, 1.0, 0.0, 0.5, 1.0, 1.0,
1.0, -1.0, -1.0, 0.0, 0.5, 1.0, 1.0,
-1.0, 1.0, -1.0, 1.0, 0.0, 0.5, 1.0,
-1.0, 1.0, 1.0, 1.0, 0.0, 0.5, 1.0,
1.0, 1.0, 1.0, 1.0, 0.0, 0.5, 1.0,
1.0, 1.0, -1.0, 1.0, 0.0, 0.5, 1.0
})
local buffer_desc = ffi.new("sg_buffer_desc[1]")
buffer_desc[0].data.ptr = vertices
buffer_desc[0].data.size = ffi.sizeof(vertices)
buffer_desc[0].label = "cube-vertices"
local vbuf = sg.sg_make_buffer(buffer_desc)
local indices = ffi.new("uint16_t[36]", {
0, 1, 2, 0, 2, 3,
6, 5, 4, 7, 6, 4,
8, 9, 10, 8, 10, 11,
14, 13, 12, 15, 14, 12,
16, 17, 18, 16, 18, 19,
22, 21, 20, 23, 22, 20
})
local ibuffer_desc = ffi.new("sg_buffer_desc[1]", {})
ibuffer_desc[0].type = sg.SG_BUFFERTYPE_INDEXBUFFER
ibuffer_desc[0].data.ptr = indices
ibuffer_desc[0].data.size = ffi.sizeof(indices)
ibuffer_desc[0].label = "cube-indices"
local ibuf = sg.sg_make_buffer(ibuffer_desc)
local shd = sg.sg_make_shader(shader)
local pipe_desc = ffi.new("sg_pipeline_desc[1]", {})
pipe_desc[0].layout.buffers[0].stride = 28
pipe_desc[0].layout.attrs[0].format = sg.SG_VERTEXFORMAT_FLOAT3
pipe_desc[0].layout.attrs[1].format = sg.SG_VERTEXFORMAT_FLOAT4
pipe_desc[0].shader = shd
pipe_desc[0].index_type = sg.SG_INDEXTYPE_UINT16
pipe_desc[0].cull_mode = sg.SG_CULLMODE_BACK
pipe_desc[0].depth.write_enabled = true
pipe_desc[0].depth.compare = sg.SG_COMPAREFUNC_LESS_EQUAL
pipe_desc[0].label = "cube-pipeline"
state[0].pip = sg.sg_make_pipeline(pipe_desc)
binding[0].vertex_buffers[0] = vbuf
binding[0].index_buffer = ibuf
state[0].bind = binding
end
-- --------------------------------------------------------------------------------------
local function frame()
-- /* NOTE: the vs_params_t struct has been code-generated by the shader-code-gen */
local w = sapp.sapp_widthf()
local h = sapp.sapp_heightf()
local t = (sapp.sapp_frame_duration() * 60.0)
flecs.ecs_progress(world, sapp.sapp_frame_duration())
local proj = hmm.HMM_Perspective(60.0, w/h, 0.01, 10.0)
local view = hmm.HMM_LookAt(hmm.HMM_Vec3(0.0, 1.5, 6.0), hmm.HMM_Vec3(0.0, 0.0, 0.0), hmm.HMM_Vec3(0.0, 1.0, 0.0))
local view_proj = hmm.HMM_MultiplyMat4(proj, view)
state[0].rx = state[0].rx + 1.0 * t
state[0].ry = state[0].ry + 2.0 * t
local rxm = hmm.HMM_Rotate(state[0].rx, hmm.HMM_Vec3(1.0, 0.0, 0.0))
local rym = hmm.HMM_Rotate(state[0].ry, hmm.HMM_Vec3(0.0, 1.0, 0.0))
local model = hmm.HMM_MultiplyMat4(rxm, rym)
local mvp = hmm.HMM_MultiplyMat4(view_proj, model)
local pass = ffi.new("sg_pass[1]")
pass[0].action.colors[0].load_action = sg.SG_LOADACTION_CLEAR
pass[0].action.colors[0].clear_value = { 0.25, 0.5, 0.75, 1.0 }
pass[0].swapchain = slib.sglue_swapchain()
sg.sg_begin_pass(pass)
sg.sg_apply_pipeline(state[0].pip)
sg.sg_apply_bindings(state[0].bind)
local vs_params = ffi.new("vs_params_t[1]")
vs_params[0].mvp = mvp
sg_range[0].ptr = vs_params
sg_range[0].size = ffi.sizeof(vs_params[0])
sg.sg_apply_uniforms(0, sg_range)
sg.sg_draw(0, 36, 1)
sg.sg_end_pass()
sg.sg_commit()
-- Display frame stats in console.
-- hutils.show_stats()
end
-- --------------------------------------------------------------------------------------
local function cleanup()
sg.sg_shutdown()
flecs.ecs_fini(world)
end
-- --------------------------------------------------------------------------------------
local app_desc = ffi.new("sapp_desc[1]")
app_desc[0].init_cb = init
app_desc[0].frame_cb = frame
app_desc[0].cleanup_cb = cleanup
app_desc[0].width = 1920
app_desc[0].height = 1080
app_desc[0].window_title = "Cube (sokol-app)"
app_desc[0].fullscreen = false
app_desc[0].icon.sokol_default = true
app_desc[0].logger.func = slib.slog_func
sapp.sapp_run( app_desc )
-- --------------------------------------------------------------------------------------
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