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67 lines
2.4 KiB
Go
67 lines
2.4 KiB
Go
package render
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import (
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"encoding/binary"
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"math"
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"testing"
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"aego/core/ids"
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"aego/core/mathx"
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"aego/render/lighting"
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"aego/render/material"
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"aego/render/shader"
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"aego/render/view"
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)
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func TestShadowStripFollowsRenderedGeometryAndSoftness(t *testing.T) {
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r, dev := newTestRenderer(t, 64)
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draws := testDraws(t, r, 1, 0)
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sh := &material.Shader{Name: "shadow-strip", Domain: shader.DomainSprite, Features: shader.FeatureAffine | shader.FeatureLighting,
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Schema: material.NewSchema(nil, 0, 0), Variants: []material.Variant{{Sources: [4]string{"v", "f", "v", "f"}}}}
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m, ok := material.New("shadow strip", sh, 0, shader.BlendPremultiplied)
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if !ok {
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t.Fatal("material")
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}
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draws[0].Material = m
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draws[0].VisibilityLayers = 1
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env := lighting.DefaultEnvironment()
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env.ColorMode, env.ShadowResolution, env.MaxShadowedLights = lighting.LDR, 128, 1
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in := lighting.Input{HasEnvironment: true, Environment: env, Lights: []lighting.Light{{ID: ids.NodeID{Lo: 1}, Type: lighting.Point, Direction: mathx.Vec2{X: 1},
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Color: mathx.White, Intensity: 1, Range: 10, Height: 2, Falloff: 1, Layers: 1, Shadows: true, ShadowCasterMask: 1}}}
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v := worldView()
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v.ID, v.OutputID = view.ID{Scope: 841}, view.ID{Scope: 842}
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v.DoClear = true
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for i, tc := range []struct {
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y, soft, minimum float32
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enabled bool
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}{{5, 1, .75, true}, {5, 1, .75, true}, {5, 3.5, .75, true}, {5, 5, .75, true}, {-5, 1, 0, true}, {5, 1, 0, false}} {
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in.Lights[0].ShadowSoftness = tc.soft
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in.Lights[0].Shadows = tc.enabled
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in.Points = []mathx.Vec2{{X: -5, Y: tc.y}, {X: 5, Y: tc.y}}
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in.Occluders = []lighting.Occluder{{ID: ids.NodeID{Lo: 2}, Layers: 1, Count: 2, GeometryRevision: 1, TransformRevision: uint64(math.Float32bits(tc.y))}}
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f := dev.BeginFrame(1280, 720)
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if err := r.BeginFrame(f, 1280, 720, 1); err != nil {
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t.Fatal(err)
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}
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vf := r.View(v)
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if err := vf.Lighting(&in); err != nil {
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t.Fatal(err)
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}
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vf.Sprites(draws)
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vf.End()
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r.EndFrame()
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dev.EndFrame()
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if len(r.lightState.uploadedSets) == 0 || r.stats.LightingFailures != 0 {
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t.Fatalf("no light binding at step %d", i)
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}
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got := math.Float32frombits(binary.LittleEndian.Uint32(r.lightState.uploadedSets[0][532:]))
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want := max(0, tc.minimum-(min(tc.soft, 4)+2)/128)
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if got != want {
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t.Fatalf("step %d: clear bound %g, want %g", i, got, want)
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}
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if i == 1 && r.stats.ShadowCacheHits == 0 {
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t.Fatal("unchanged mask did not reuse its bound")
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}
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}
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}
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