From 31578303a4eab6b6b083e57b6bf8d12ff3b3d991 Mon Sep 17 00:00:00 2001 From: x2048 Date: Thu, 31 Mar 2022 22:40:06 +0200 Subject: Tune shadow perspective distortion (#12146) * Pass perspective distortion parameters as uniforms * Set all perspective bias parameters via ShadowRenderer * Recalibrate perspective distortion and shadow range to render less shadow geometry with the same quality and observed shadow distance --- src/client/shader.cpp | 48 +++++++++++++++++++++++++++++++++++------------- 1 file changed, 35 insertions(+), 13 deletions(-) (limited to 'src/client/shader.cpp') diff --git a/src/client/shader.cpp b/src/client/shader.cpp index fa5ffb914..d9c1952c4 100644 --- a/src/client/shader.cpp +++ b/src/client/shader.cpp @@ -210,17 +210,23 @@ public: class MainShaderConstantSetter : public IShaderConstantSetter { - CachedVertexShaderSetting m_world_view_proj; - CachedVertexShaderSetting m_world; + CachedVertexShaderSetting m_world_view_proj; + CachedVertexShaderSetting m_world; // Shadow-related - CachedPixelShaderSetting m_shadow_view_proj; - CachedPixelShaderSetting m_light_direction; - CachedPixelShaderSetting m_texture_res; - CachedPixelShaderSetting m_shadow_strength; - CachedPixelShaderSetting m_time_of_day; - CachedPixelShaderSetting m_shadowfar; + CachedPixelShaderSetting m_shadow_view_proj; + CachedPixelShaderSetting m_light_direction; + CachedPixelShaderSetting m_texture_res; + CachedPixelShaderSetting m_shadow_strength; + CachedPixelShaderSetting m_time_of_day; + CachedPixelShaderSetting m_shadowfar; CachedPixelShaderSetting m_shadow_texture; + CachedVertexShaderSetting m_perspective_bias0_vertex; + CachedPixelShaderSetting m_perspective_bias0_pixel; + CachedVertexShaderSetting m_perspective_bias1_vertex; + CachedPixelShaderSetting m_perspective_bias1_pixel; + CachedVertexShaderSetting m_perspective_zbias_vertex; + CachedPixelShaderSetting m_perspective_zbias_pixel; #if ENABLE_GLES // Modelview matrix @@ -247,6 +253,12 @@ public: , m_time_of_day("f_timeofday") , m_shadowfar("f_shadowfar") , m_shadow_texture("ShadowMapSampler") + , m_perspective_bias0_vertex("xyPerspectiveBias0") + , m_perspective_bias0_pixel("xyPerspectiveBias0") + , m_perspective_bias1_vertex("xyPerspectiveBias1") + , m_perspective_bias1_pixel("xyPerspectiveBias1") + , m_perspective_zbias_vertex("zPerspectiveBias") + , m_perspective_zbias_pixel("zPerspectiveBias") {} ~MainShaderConstantSetter() = default; @@ -293,26 +305,36 @@ public: shadowViewProj *= light.getViewMatrix(); m_shadow_view_proj.set(shadowViewProj.pointer(), services); - float v_LightDirection[3]; + f32 v_LightDirection[3]; light.getDirection().getAs3Values(v_LightDirection); m_light_direction.set(v_LightDirection, services); - float TextureResolution = light.getMapResolution(); + f32 TextureResolution = light.getMapResolution(); m_texture_res.set(&TextureResolution, services); - float ShadowStrength = shadow->getShadowStrength(); + f32 ShadowStrength = shadow->getShadowStrength(); m_shadow_strength.set(&ShadowStrength, services); - float timeOfDay = shadow->getTimeOfDay(); + f32 timeOfDay = shadow->getTimeOfDay(); m_time_of_day.set(&timeOfDay, services); - float shadowFar = shadow->getMaxShadowFar(); + f32 shadowFar = shadow->getMaxShadowFar(); m_shadowfar.set(&shadowFar, services); // I dont like using this hardcoded value. maybe something like // MAX_TEXTURE - 1 or somthing like that?? s32 TextureLayerID = 3; m_shadow_texture.set(&TextureLayerID, services); + + f32 bias0 = shadow->getPerspectiveBiasXY(); + m_perspective_bias0_vertex.set(&bias0, services); + m_perspective_bias0_pixel.set(&bias0, services); + f32 bias1 = 1.0f - bias0 + 1e-5f; + m_perspective_bias1_vertex.set(&bias1, services); + m_perspective_bias1_pixel.set(&bias1, services); + f32 zbias = shadow->getPerspectiveBiasZ(); + m_perspective_zbias_vertex.set(&zbias, services); + m_perspective_zbias_pixel.set(&zbias, services); } } }; -- cgit v1.2.3