git add screenshot_buffer

scene_screenshot_buffer.lua

@@ -0,0 +1,78 @@
+-- Toyota 2JZ-GTE Engine model by Serhii Denysenko (CGTrader: serhiidenysenko8256)
+-- URL : https://www.cgtrader.com/3d-models/vehicle/part/toyota-2jz-gte-engine-2932b715-2f42-4ecd-93ce-df9507c67ce8
+
+hg = require("harfang")
+
+hg.InputInit()
+hg.WindowSystemInit()
+
+res_x, res_y = 1024, 1024
+win = hg.RenderInit('Screenshot Buffer', res_x, res_y, hg.RF_VSync | hg.RF_MSAA4X)
+
+hg.AddAssetsFolder("resources_compiled")
+
+pipeline = hg.CreateForwardPipeline()
+local res = hg.PipelineResources()
+
+scene = hg.Scene()
+hg.LoadSceneFromAssets("car_engine/engine.scn", scene, res, hg.GetForwardPipelineInfo())
+
+local tex_size = 1024
+local picture = hg.Picture(tex_size, tex_size, hg.PF_RGBA32F)
+local frame_buffer = hg.CreateFrameBuffer(tex_size, tex_size, hg.TF_RGBA8, hg.TF_D24, 4, 'framebuffer')
+local tex_color = hg.GetColorTexture(frame_buffer)
+local tex_color_ref = res:AddTexture("tex_rb", tex_color)
+local tex_readback = hg.CreateTexture(tex_size, tex_size, "readback", hg.TF_ReadBack | hg.TF_BlitDestination, hg.TF_RGBA8)
+
+local state = "none"
+
+-- main loop
+local frame = 0
+local view_id = 0
+
+vtx_layout = hg.VertexLayoutPosFloatTexCoord0UInt8()
+
+plane_mdl = hg.CreatePlaneModel(vtx_layout, 1, 1, 1, 1)
+plane_ref = res:AddModel('plane', plane_mdl)
+
+plane_prg = hg.LoadProgramFromAssets('shaders/texture')
+
+
+while not hg.ReadKeyboard():Key(hg.K_Escape) and hg.IsWindowOpen(win) do
+	dt = hg.TickClock()
+
+	trs = scene:GetNode('engine_master'):GetTransform()
+	trs:SetRot(trs:GetRot() + hg.Vec3(0, hg.Deg(15) * hg.time_to_sec_f(dt), 0))
+
+    if(hg.ReadKeyboard():Key(hg.K_Space) and state == "none") then
+        state = "capture"
+        frame_count_capture, view_id = hg.CaptureTexture(view_id, res, tex_color_ref, tex_readback, picture)
+        print(frame_count_capture, frame) 
+
+    elseif(state == "capture" and frame_count_capture <= frame) then
+        local png_filename = "screenshots/" .. ".png"
+        hg.SavePNG(picture, png_filename)
+        state = "none"
+    end
+
+	scene:Update(dt)
+
+	view_id = 0
+	view_id = hg.SubmitSceneToPipeline(view_id, scene, hg.IntRect(0, 0, res_x, res_y), true, pipeline, res, frame_buffer.handle)
+	--view_id = hg.SubmitSceneToPipeline(view_id, scene, hg.IntRect(0, 0, res_x, res_y), true, pipeline, res)
+
+	-- hg.SetViewPerspective(view_id, 0, 0, res_x, res_y, hg.TranslationMat4(hg.Vec3(0, 0, -1.8)))
+
+	-- val_uniforms = {hg.MakeUniformSetValue('color', hg.Vec4(1, 1, 1, 1))} 
+	-- tex_uniforms = {hg.MakeUniformSetTexture('s_tex', tex_color, 0)}
+
+	-- hg.DrawModel(view_id, plane_mdl, plane_prg, val_uniforms, tex_uniforms, hg.TransformationMat4(hg.Vec3(0, 0, 0), hg.Vec3(-math.pi/2,0, 0)))
+	frame = hg.Frame()
+	hg.UpdateWindow(win)
+end
+
+hg.RenderShutdown()
+hg.DestroyWindow(win)
+
+
+