73 lines
2.8 KiB
Lua
73 lines
2.8 KiB
Lua
return {
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radius = 0.2,
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intensity = 3,
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use_temporal = true,
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blur = false,
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current_frame_weight = 0.05,
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history_buf = -1,
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enabled = true,
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gui = function(self)
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_, self.enabled = ImGui.Checkbox("Enabled", self.enabled)
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_, self.intensity = ImGui.DragFloat("Intensity", self.intensity)
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_, self.radius = ImGui.DragFloat("Radius", self.radius)
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_, self.use_temporal = ImGui.Checkbox("Temporal", self.use_temporal)
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end,
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postprocess = function(self, env, hdr_buffer, gbuffer, shadowmap) : ()
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if not self.enabled then return end
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env.ssao_shader = env.ssao_shader or env.preloadShader("pipelines/ssao.shd")
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env.blur_shader = env.blur_shader or env.preloadShader("pipelines/blur.shd")
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env.ssao_blit_shader = env.ssao_blit_shader or env.preloadShader("pipelines/ssao_blit.shd")
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env.ssao_resolve_shader = env.ssao_resolve_shader or env.preloadShader("pipelines/ssao_resolve.shd")
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env.ssao_rb_desc = env.ssao_rb_desc or env.createRenderbufferDesc { rel_size = {0.5, 0.5}, format = "r8", debug_name = "ssao", compute_write = true }
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local w = math.floor(env.viewport_w * 0.5)
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local h = math.floor(env.viewport_h * 0.5)
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local ssao_rb = env.createRenderbuffer(env.ssao_rb_desc)
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if self.use_temporal and self.history_buf == -1 then
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self.history_buf = env.createRenderbuffer(env.ssao_rb_desc)
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env.setRenderTargets(self.history_buf)
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env.clear(env.CLEAR_ALL, 1, 1, 1, 1, 0)
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end
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env.setRenderTargets()
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env.beginBlock("ssao " .. tostring(w) .. "x" .. tostring(h))
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env.drawcallUniforms(self.radius, self.intensity, w, h)
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env.bindTextures({gbuffer.DS, gbuffer.B}, 0)
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env.bindImageTexture(ssao_rb, 2)
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env.dispatch(env.ssao_shader, (w + 15) / 16, (h + 15) / 16, 1)
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env.ssao_blur_rb_desc = env.ssao_blur_rb_desc or env.createRenderbufferDesc { format = "r8", rel_size = {0.5, 0.5}, debug_name = "ssao_blur" }
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if self.use_temporal then
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env.beginBlock("ssao_resolve " .. tostring(w) .. "x" .. tostring(h))
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env.drawcallUniforms( w, h, 0, 0, self.current_frame_weight, 0, 0, 0 )
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env.bindTextures({gbuffer.DS, self.history_buf}, 0)
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env.bindImageTexture(ssao_rb, 2)
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env.dispatch(env.ssao_resolve_shader, (w + 15) / 16, (h + 15) / 16, 1)
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env.endBlock()
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if self.blur then
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env.blur(ssao_rb, w, h, env.ssao_blur_rb_desc)
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end
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else
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if self.blur then
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env.blur(ssao_rb, w, h, env.ssao_blur_rb_desc)
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end
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end
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env.beginBlock("ssao_blit " .. tostring(env.viewport_w) .. "x" .. tostring(env.viewport_h))
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env.drawcallUniforms( env.viewport_w, env.viewport_h, 0, 0 )
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env.bindTextures({ssao_rb}, 0)
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env.bindImageTexture(gbuffer.B, 1)
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env.dispatch(env.ssao_blit_shader, (env.viewport_w + 15) / 16, (env.viewport_h + 15) / 16, 1)
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env.endBlock()
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env.endBlock()
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if self.use_temporal then
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self.history_buf = ssao_rb
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env.keepRenderbufferAlive(self.history_buf)
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end
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end
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}
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