123 lines
3.9 KiB
Lua
123 lines
3.9 KiB
Lua
package.path = package.path..";../../?.lua"
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local dirtools = require("tools.vfs.dirtools").init("sokol%-luajit")
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--_G.SOKOL_DLL = "sokol_debug_dll"
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local sapp = require("sokol_app")
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sg = require("sokol_gfx")
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local slib = require("sokol_libs") -- Warn - always after gfx!!
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local hmm = require("hmm")
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local hutils = require("hmm_utils")
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require("engine.platform")
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local ffi = require("ffi")
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-- --------------------------------------------------------------------------------------
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-- The nice way to take a glsl shader and load, compile and return a shader description
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local shc = require("tools.shader_compiler.shc_compile").init( "sokol%-luajit", false )
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local shader = shc.compile("./projects/examples/samples/sdf-sapp.glsl", "sdf")
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-- --------------------------------------------------------------------------------------
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ffi.cdef[[
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/* application state */
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typedef struct state {
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sg_pass_action pass_action;
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vs_params_t *vs_params;
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sg_pipeline pip;
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sg_bindings* bind;
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} state;
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]]
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-- --------------------------------------------------------------------------------------
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local state = ffi.new("state[1]")
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local binding = ffi.new("sg_bindings[1]", {})
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local vs_params = ffi.new("vs_params_t[1]")
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local vs_params_range = ffi.new("sg_range[1]")
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local pass = ffi.new("sg_pass[1]")
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-- --------------------------------------------------------------------------------------
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local function init()
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local desc = ffi.new("sg_desc[1]")
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desc[0].environment = slib.sglue_environment()
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desc[0].logger.func = slib.slog_func
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sg.sg_setup( desc )
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win.Sleep(10)
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print("Sokol Is Valid: "..tostring(sg.sg_isvalid()))
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local fsq_verts = ffi.new("float[6]", { -1.0, -3.0, 3.0, 1.0, -1.0, 1.0 })
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local buffer_inf = ffi.new("sg_buffer_desc[1]")
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buffer_inf[0].data.ptr = fsq_verts
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buffer_inf[0].data.size = ffi.sizeof(fsq_verts)
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buffer_inf[0].label = "fsq vertices"
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--// a vertex buffer to render a 'fullscreen triangle'
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state[0].bind = binding
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state[0].bind[0].vertex_buffers[0] = sg.sg_make_buffer(buffer_inf)
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local shd = sg.sg_make_shader(shader)
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local pipe_desc = ffi.new("sg_pipeline_desc[1]")
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pipe_desc[0].shader = shd
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pipe_desc[0].layout.attrs[0].format = sg.SG_VERTEXFORMAT_FLOAT2 -- vs_position float2
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pipe_desc[0].label = "fsq-pipeline"
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state[0].pip = sg.sg_make_pipeline(pipe_desc)
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state[0].pass_action.colors[0].load_action = sg.SG_LOADACTION_DONTCARE
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state[0].vs_params = vs_params
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pass[0].action = state[0].pass_action
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end
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-- --------------------------------------------------------------------------------------
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local function frame()
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local w = sapp.sapp_widthf()
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local h = sapp.sapp_heightf()
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state[0].vs_params[0].time = state[0].vs_params.time + sapp.sapp_frame_duration()
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state[0].vs_params[0].aspect = w / h
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pass[0].swapchain = sg.sglue_swapchain()
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sg.sg_begin_pass(pass)
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sg.sg_apply_pipeline(state[0].pip)
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sg.sg_apply_bindings(state[0].bind)
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vs_params_range[0].ptr = state[0].vs_params
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vs_params_range[0].size = ffi.sizeof(state[0].vs_params[0])
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sg.sg_apply_uniforms(sg.SG_SHADERSTAGE_VS, vs_params_range);
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sg.sg_draw(0, 3, 1)
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sg.sg_end_pass()
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sg.sg_commit()
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end
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-- --------------------------------------------------------------------------------------
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local function cleanup()
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sg.sg_shutdown()
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end
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-- --------------------------------------------------------------------------------------
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local app_desc = ffi.new("sapp_desc[1]")
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app_desc[0].init_cb = init
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app_desc[0].frame_cb = frame
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app_desc[0].cleanup_cb = cleanup
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app_desc[0].width = 1920
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app_desc[0].height = 1080
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app_desc[0].window_title = "SDF Example (sokol-app)"
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app_desc[0].icon.sokol_default = true
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app_desc[0].logger.func = slib.slog_func
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sapp.sapp_run( app_desc )
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-- --------------------------------------------------------------------------------------
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