220 lines
9.1 KiB
Lua
220 lines
9.1 KiB
Lua
local _math = require '_math'
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local mat4 = _math.mat4
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local vec3 = _math.vec3
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local vec4 = _math.vec4
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local scalar = _math.scalar
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local collada_types = require 'collada_types'
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local pixel_data = love.filesystem.newFileData("pixel.glsl")
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--local vertex_data = love.filesystem.newFileData("vertex.glsl")
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local vertex_data = love.filesystem.newFileData("skinned_vertex.glsl")
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local shader = love.graphics.newShader(pixel_data, vertex_data)
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local images_textures = {}
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local node_instances = {}
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local collada_scene
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local index_buffer
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collada_scene = {
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load_buffers = function()
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----------------------------------------------------------------------
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-- index buffer
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----------------------------------------------------------------------
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local index_data = love.filesystem.newFileData("scene/noodle/noodle.idx")
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index_buffer = love.graphics.newBuffer("uint32", index_data, { index = true, usage = "static" })
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----------------------------------------------------------------------
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-- vertex shader storage buffer
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----------------------------------------------------------------------
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local vtx_format = {
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{ name = 'Position', format = 'floatvec4' },
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{ name = 'Normal', format = 'floatvec4' },
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{ name = 'Texture', format = 'floatvec4' },
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}
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local vtx_data = love.filesystem.newFileData("scene/noodle/noodle.vtx")
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local vtx_shaderstorage_buffer = love.graphics.newBuffer(vtx_format, vtx_data, { shaderstorage = true, usage = "static" })
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local vjw_format = {
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{ name = 'Joint', format = 'int32vec4' },
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{ name = 'Weight', format = 'floatvec4' },
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}
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local vjw_data = love.filesystem.newFileData("scene/noodle/noodle.vjw")
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local vjw_shaderstorage_buffer = love.graphics.newBuffer(vjw_format, vjw_data, { shaderstorage = true, usage = "static" })
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shader:send("VertexPNTLayout", vtx_shaderstorage_buffer)
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shader:send("VertexJWLayout", vjw_shaderstorage_buffer)
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end,
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load_images = function(base_path, images)
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local image_index = 0
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for _, image in ipairs(images) do
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assert(string.sub(image.uri, 1, 1) == ".")
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path = base_path .. string.sub(image.uri, 2)
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print("load image", path)
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local image_data = love.image.newImageData(path)
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local texture = love.graphics.newTexture(image_data)
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images_textures[image_index] = texture
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image_index = image_index + 1
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end
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end,
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set_color_or_texture = function(color_or_texture, color_uniform, sampler_uniform)
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if color_or_texture.type == collada_types.color_or_texture_type.COLOR then
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shader:send(color_uniform, color_or_texture.color)
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elseif color_or_texture.type == collada_types.color_or_texture_type.TEXTURE then
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shader:send(sampler_uniform, images_textures[color_or_texture.texture.image_index])
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else
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assert(false)
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end
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end,
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set_instance_material = function(instance_material)
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local effect = instance_material.material.effect
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if effect.type == collada_types.effect_type.BLINN then
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collada_scene.set_color_or_texture(effect.blinn.emission, "emission_color", "emission_sampler");
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collada_scene.set_color_or_texture(effect.blinn.ambient, "ambient_color", "ambient_sampler");
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collada_scene.set_color_or_texture(effect.blinn.diffuse, "diffuse_color", "diffuse_sampler");
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collada_scene.set_color_or_texture(effect.blinn.specular, "specular_color", "specular_sampler");
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shader:send("shininess", effect.blinn.shininess);
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elseif effect.type == collada_types.effect_type.LAMBERT then
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collada_scene.set_color_or_texture(effect.lambert.emission, "emission_color", "emission_sampler");
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collada_scene.set_color_or_texture(effect.lambert.ambient, "ambient_color", "ambient_sampler");
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collada_scene.set_color_or_texture(effect.lambert.diffuse, "diffuse_color", "diffuse_sampler");
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elseif effect.type == collada_types.effect_type.PHONG then
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collada_scene.set_color_or_texture(effect.phong.emission, "emission_color", "emission_sampler");
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collada_scene.set_color_or_texture(effect.phong.ambient, "ambient_color", "ambient_sampler");
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collada_scene.set_color_or_texture(effect.phong.diffuse, "diffuse_color", "diffuse_sampler");
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collada_scene.set_color_or_texture(effect.phong.specular, "specular_color", "specular_sampler");
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shader:send("shininess", effect.phong.shininess);
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elseif effect.type == collada_types.effect_type.CONSTANT then
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shader:send("emission_color", effect.constant.color)
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else
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assert(false)
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end
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local texture_channel = {
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instance_material.emission.input_set,
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instance_material.ambient.input_set,
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instance_material.diffuse.input_set,
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instance_material.specular.input_set,
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}
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shader:send("texture_channel", texture_channel)
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end,
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draw_geometry = function(geometry, instance_materials)
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local mesh = geometry.mesh
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local base_index_buffer_offset = mesh.index_buffer_offset / 4
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for _, instance_material in ipairs(instance_materials) do
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collada_scene.set_instance_material(instance_material)
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local triangles = mesh.triangles[instance_material.element_index + 1]
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local index_offset = base_index_buffer_offset + triangles.index_offset
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local index_count = triangles.count * 3
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local vertex_offset = mesh.vertex_buffer_offset / (4 * 4 * 3)
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shader:send("VertexPNTOffset", vertex_offset)
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love.graphics.drawFromShader(index_buffer, index_count, 1, 1 + index_offset)
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end
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end,
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draw_instance_geometries = function(instance_geometries)
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for _, instance_geometry in ipairs(instance_geometries) do
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collada_scene.draw_geometry(instance_geometry.geometry, instance_geometry.instance_materials)
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end
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end,
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draw_skin = function(skin, instance_materials)
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local mesh = skin.geometry.mesh
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local base_index_buffer_offset = mesh.index_buffer_offset / 4
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for _, instance_material in ipairs(instance_materials) do
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collada_scene.set_instance_material(instance_material)
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local triangles = mesh.triangles[instance_material.element_index + 1]
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local index_offset = base_index_buffer_offset + triangles.index_offset
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local index_count = triangles.count * 3
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local mesh_vertex_offset = mesh.vertex_buffer_offset / (4 * 4 * 3)
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shader:send("VertexPNTOffset", mesh_vertex_offset)
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local skin_vertex_offset = skin.vertex_buffer_offset / (4 * 4 * 2)
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shader:send("VertexJWOffset", skin_vertex_offset)
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love.graphics.drawFromShader(index_buffer, index_count, 1, 1 + index_offset)
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end
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end,
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draw_instance_controllers = function(node_state, instance_controllers)
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for _, instance_controller in ipairs(instance_controllers) do
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local skin = instance_controller.controller.skin
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local joints = {}
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for joint_index = 1, instance_controller.joint_count do
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local ibm = mat4.load_table(skin.inverse_bind_matrices[joint_index])
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local node_index = instance_controller.joint_node_indices[joint_index]
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local node_instance = node_state.node_instances[node_index]
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joints[joint_index] = ibm * node_instance.world
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end
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--shader:send("Joints", "column",
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--joints[1].data,
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--joints[2].data,
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--joints[3].data)
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shader:send("Joints", "column",
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mat4.store_table(joints[1]),
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mat4.store_table(joints[2]),
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mat4.store_table(joints[3]))
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collada_scene.draw_skin(instance_controller.controller.skin,
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instance_controller.instance_materials)
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end
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end,
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draw_node = function(node_state, node, node_instance, transform)
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if node.type ~= collada_types.node_type.NODE then
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return
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end
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if node.instance_geometries_count == 0 and node.instance_controllers_count == 0 then
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return
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end
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local world = node_instance.world
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transform = world * transform
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shader:send("world_transform", "column", world.data)
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shader:send("transform", "column", transform.data)
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collada_scene.draw_instance_geometries(node.instance_geometries)
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collada_scene.draw_instance_controllers(node_state, node.instance_controllers)
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end,
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draw_nodes = function(node_state, transform)
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love.graphics.setShader(shader)
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shader:send("view_position", {-88.57101, -71.71298, 104.5738, 1.0})
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shader:send("light_position", {-26.649, -56.804, 58.237, 1.0})
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local node_index = 0
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for _, node in ipairs(node_state.nodes) do
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local node_instance = node_state.node_instances[node_index]
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collada_scene.draw_node(node_state, node, node_instance, transform)
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node_index = node_index + 1
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end
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end,
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}
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return {
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draw_nodes = collada_scene.draw_nodes,
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load_buffers = collada_scene.load_buffers,
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load_node_instances = collada_scene.load_node_instances,
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load_images = collada_scene.load_images,
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update = collada_scene.update,
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}
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