uniform float f_shadowfar;
uniform float f_shadow_strength;
uniform vec4 CameraPos;
- varying float normalOffsetScale;
+ uniform float xyPerspectiveBias0;
+ uniform float xyPerspectiveBias1;
+
varying float adj_shadow_strength;
varying float cosLight;
varying float f_normal_length;
+ varying vec3 shadow_position;
#endif
const float fogStart = FOG_START;
const float fogShadingParameter = 1.0 / ( 1.0 - fogStart);
-
-
#ifdef ENABLE_DYNAMIC_SHADOWS
-uniform float xyPerspectiveBias0;
-uniform float xyPerspectiveBias1;
-uniform float zPerspectiveBias;
-
-vec4 getPerspectiveFactor(in vec4 shadowPosition)
-{
- vec2 s = vec2(shadowPosition.x > CameraPos.x ? 1.0 : -1.0, shadowPosition.y > CameraPos.y ? 1.0 : -1.0);
- vec2 l = s * (shadowPosition.xy - CameraPos.xy) / (1.0 - s * CameraPos.xy);
- float pDistance = length(l);
- float pFactor = pDistance * xyPerspectiveBias0 + xyPerspectiveBias1;
- l /= pFactor;
- shadowPosition.xy = CameraPos.xy * (1.0 - l) + s * l;
- shadowPosition.z *= zPerspectiveBias;
- return shadowPosition;
-}
// assuming near is always 1.0
float getLinearDepth()
vec3 getLightSpacePosition()
{
- vec4 pLightSpace;
- // some drawtypes have zero normals, so we need to handle it :(
- #if DRAW_TYPE == NDT_PLANTLIKE
- pLightSpace = m_ShadowViewProj * vec4(worldPosition, 1.0);
- #else
- pLightSpace = m_ShadowViewProj * vec4(worldPosition + normalOffsetScale * normalize(vNormal), 1.0);
- #endif
- pLightSpace = getPerspectiveFactor(pLightSpace);
- return pLightSpace.xyz * 0.5 + 0.5;
+ return shadow_position * 0.5 + 0.5;
}
// custom smoothstep implementation because it's not defined in glsl1.2
// https://docs.gl/sl4/smoothstep
#ifdef COLORED_SHADOWS
vec4 visibility;
- if (cosLight > 0.0)
+ if (cosLight > 0.0 || f_normal_length < 1e-3)
visibility = getShadowColor(ShadowMapSampler, posLightSpace.xy, posLightSpace.z);
else
visibility = vec4(1.0, 0.0, 0.0, 0.0);
shadow_int = visibility.r;
shadow_color = visibility.gba;
#else
- if (cosLight > 0.0)
+ if (cosLight > 0.0 || f_normal_length < 1e-3)
shadow_int = getShadow(ShadowMapSampler, posLightSpace.xy, posLightSpace.z);
else
shadow_int = 1.0;
uniform float f_shadowfar;
uniform float f_shadow_strength;
uniform float f_timeofday;
+ uniform vec4 CameraPos;
+
varying float cosLight;
varying float normalOffsetScale;
varying float adj_shadow_strength;
varying float f_normal_length;
+ varying vec3 shadow_position;
#endif
const float BS = 10.0;
uniform float xyPerspectiveBias0;
uniform float xyPerspectiveBias1;
+uniform float zPerspectiveBias;
#ifdef ENABLE_DYNAMIC_SHADOWS
+
+vec4 getRelativePosition(in vec4 position)
+{
+ vec2 l = position.xy - CameraPos.xy;
+ vec2 s = l / abs(l);
+ s = (1.0 - s * CameraPos.xy);
+ l /= s;
+ return vec4(l, s);
+}
+
+float getPerspectiveFactor(in vec4 relativePosition)
+{
+ float pDistance = length(relativePosition.xy);
+ float pFactor = pDistance * xyPerspectiveBias0 + xyPerspectiveBias1;
+ return pFactor;
+}
+
+vec4 applyPerspectiveDistortion(in vec4 position)
+{
+ vec4 l = getRelativePosition(position);
+ float pFactor = getPerspectiveFactor(l);
+ l.xy /= pFactor;
+ position.xy = l.xy * l.zw + CameraPos.xy;
+ position.z *= zPerspectiveBias;
+ return position;
+}
+
// custom smoothstep implementation because it's not defined in glsl1.2
// https://docs.gl/sl4/smoothstep
float mtsmoothstep(in float edge0, in float edge1, in float x)
#ifdef ENABLE_DYNAMIC_SHADOWS
if (f_shadow_strength > 0.0) {
- vec3 nNormal = normalize(vNormal);
- cosLight = dot(nNormal, -v_LightDirection);
-
- // Calculate normal offset scale based on the texel size adjusted for
- // curvature of the SM texture. This code must be change together with
- // getPerspectiveFactor or any light-space transformation.
- vec3 eyeToVertex = worldPosition - eyePosition + cameraOffset;
- // Distance from the vertex to the player
- float distanceToPlayer = length(eyeToVertex - v_LightDirection * dot(eyeToVertex, v_LightDirection)) / f_shadowfar;
- // perspective factor estimation according to the
- float perspectiveFactor = distanceToPlayer * xyPerspectiveBias0 + xyPerspectiveBias1;
- float texelSize = f_shadowfar * perspectiveFactor * perspectiveFactor /
- (f_textureresolution * xyPerspectiveBias1 - perspectiveFactor * xyPerspectiveBias0);
- float slopeScale = clamp(pow(1.0 - cosLight*cosLight, 0.5), 0.0, 1.0);
- normalOffsetScale = texelSize * slopeScale;
+ vec3 nNormal;
+ f_normal_length = length(vNormal);
+
+ /* normalOffsetScale is in world coordinates (1/10th of a meter)
+ z_bias is in light space coordinates */
+ float normalOffsetScale, z_bias;
+ float pFactor = getPerspectiveFactor(getRelativePosition(m_ShadowViewProj * mWorld * inVertexPosition));
+ if (f_normal_length > 0.0) {
+ nNormal = normalize(vNormal);
+ cosLight = dot(nNormal, -v_LightDirection);
+ float sinLight = pow(1 - pow(cosLight, 2.0), 0.5);
+ normalOffsetScale = 2.0 * pFactor * pFactor * sinLight * min(f_shadowfar, 500.0) /
+ xyPerspectiveBias1 / f_textureresolution;
+ z_bias = 1.0 * sinLight / cosLight;
+ }
+ else {
+ nNormal = vec3(0.0);
+ cosLight = clamp(dot(v_LightDirection, normalize(vec3(v_LightDirection.x, 0.0, v_LightDirection.z))), 1e-2, 1.0);
+ float sinLight = pow(1 - pow(cosLight, 2.0), 0.5);
+ normalOffsetScale = 0.0;
+ z_bias = 3.6e3 * sinLight / cosLight;
+ }
+ z_bias *= pFactor * pFactor / f_textureresolution / f_shadowfar;
+
+ shadow_position = applyPerspectiveDistortion(m_ShadowViewProj * mWorld * (inVertexPosition + vec4(normalOffsetScale * nNormal, 0.0))).xyz;
+ shadow_position.z -= z_bias;
if (f_timeofday < 0.2) {
adj_shadow_strength = f_shadow_strength * 0.5 *
mtsmoothstep(0.20, 0.25, f_timeofday) *
(1.0 - mtsmoothstep(0.7, 0.8, f_timeofday));
}
- f_normal_length = length(vNormal);
}
#endif
}
uniform float f_shadowfar;
uniform float f_shadow_strength;
uniform vec4 CameraPos;
- varying float normalOffsetScale;
+ uniform float xyPerspectiveBias0;
+ uniform float xyPerspectiveBias1;
+
varying float adj_shadow_strength;
varying float cosLight;
varying float f_normal_length;
+ varying vec3 shadow_position;
#endif
const float fogStart = FOG_START;
const float fogShadingParameter = 1.0 / (1.0 - fogStart);
-
-
#ifdef ENABLE_DYNAMIC_SHADOWS
-uniform float xyPerspectiveBias0;
-uniform float xyPerspectiveBias1;
-uniform float zPerspectiveBias;
-
-vec4 getPerspectiveFactor(in vec4 shadowPosition)
-{
- vec2 s = vec2(shadowPosition.x > CameraPos.x ? 1.0 : -1.0, shadowPosition.y > CameraPos.y ? 1.0 : -1.0);
- vec2 l = s * (shadowPosition.xy - CameraPos.xy) / (1.0 - s * CameraPos.xy);
- float pDistance = length(l);
- float pFactor = pDistance * xyPerspectiveBias0 + xyPerspectiveBias1;
- l /= pFactor;
- shadowPosition.xy = CameraPos.xy * (1.0 - l) + s * l;
- shadowPosition.z *= zPerspectiveBias;
- return shadowPosition;
-}
// assuming near is always 1.0
float getLinearDepth()
vec3 getLightSpacePosition()
{
- vec4 pLightSpace;
- // some drawtypes have zero normals, so we need to handle it :(
- #if DRAW_TYPE == NDT_PLANTLIKE
- pLightSpace = m_ShadowViewProj * vec4(worldPosition, 1.0);
- #else
- pLightSpace = m_ShadowViewProj * vec4(worldPosition + normalOffsetScale * normalize(vNormal), 1.0);
- #endif
- pLightSpace = getPerspectiveFactor(pLightSpace);
- return pLightSpace.xyz * 0.5 + 0.5;
+ return shadow_position * 0.5 + 0.5;
}
// custom smoothstep implementation because it's not defined in glsl1.2
// https://docs.gl/sl4/smoothstep
#ifdef COLORED_SHADOWS
vec4 visibility;
- if (cosLight > 0.0)
+ if (cosLight > 0.0 || f_normal_length < 1e-3)
visibility = getShadowColor(ShadowMapSampler, posLightSpace.xy, posLightSpace.z);
else
visibility = vec4(1.0, 0.0, 0.0, 0.0);
shadow_int = visibility.r;
shadow_color = visibility.gba;
#else
+ if (cosLight > 0.0 || f_normal_length < 1e-3)
if (cosLight > 0.0)
shadow_int = getShadow(ShadowMapSampler, posLightSpace.xy, posLightSpace.z);
else
uniform float f_shadowfar;
uniform float f_shadow_strength;
uniform float f_timeofday;
+ uniform vec4 CameraPos;
+
varying float cosLight;
- varying float normalOffsetScale;
varying float adj_shadow_strength;
varying float f_normal_length;
+ varying vec3 shadow_position;
#endif
varying vec3 eyeVec;
const float BS = 10.0;
uniform float xyPerspectiveBias0;
uniform float xyPerspectiveBias1;
+uniform float zPerspectiveBias;
#ifdef ENABLE_DYNAMIC_SHADOWS
+
+vec4 getRelativePosition(in vec4 position)
+{
+ vec2 l = position.xy - CameraPos.xy;
+ vec2 s = l / abs(l);
+ s = (1.0 - s * CameraPos.xy);
+ l /= s;
+ return vec4(l, s);
+}
+
+float getPerspectiveFactor(in vec4 relativePosition)
+{
+ float pDistance = length(relativePosition.xy);
+ float pFactor = pDistance * xyPerspectiveBias0 + xyPerspectiveBias1;
+ return pFactor;
+}
+
+vec4 applyPerspectiveDistortion(in vec4 position)
+{
+ vec4 l = getRelativePosition(position);
+ float pFactor = getPerspectiveFactor(l);
+ l.xy /= pFactor;
+ position.xy = l.xy * l.zw + CameraPos.xy;
+ position.z *= zPerspectiveBias;
+ return position;
+}
+
// custom smoothstep implementation because it's not defined in glsl1.2
// https://docs.gl/sl4/smoothstep
float mtsmoothstep(in float edge0, in float edge1, in float x)
#ifdef ENABLE_DYNAMIC_SHADOWS
if (f_shadow_strength > 0.0) {
vec3 nNormal = normalize(vNormal);
- cosLight = dot(nNormal, -v_LightDirection);
-
- // Calculate normal offset scale based on the texel size adjusted for
- // curvature of the SM texture. This code must be change together with
- // getPerspectiveFactor or any light-space transformation.
- vec3 eyeToVertex = worldPosition - eyePosition + cameraOffset;
- // Distance from the vertex to the player
- float distanceToPlayer = length(eyeToVertex - v_LightDirection * dot(eyeToVertex, v_LightDirection)) / f_shadowfar;
- // perspective factor estimation according to the
- float perspectiveFactor = distanceToPlayer * xyPerspectiveBias0 + xyPerspectiveBias1;
- float texelSize = f_shadowfar * perspectiveFactor * perspectiveFactor /
- (f_textureresolution * xyPerspectiveBias1 - perspectiveFactor * xyPerspectiveBias0);
- float slopeScale = clamp(pow(1.0 - cosLight*cosLight, 0.5), 0.0, 1.0);
- normalOffsetScale = texelSize * slopeScale;
+ f_normal_length = length(vNormal);
+
+ /* normalOffsetScale is in world coordinates (1/10th of a meter)
+ z_bias is in light space coordinates */
+ float normalOffsetScale, z_bias;
+ float pFactor = getPerspectiveFactor(getRelativePosition(m_ShadowViewProj * mWorld * inVertexPosition));
+ if (f_normal_length > 0.0) {
+ nNormal = normalize(vNormal);
+ cosLight = dot(nNormal, -v_LightDirection);
+ float sinLight = pow(1 - pow(cosLight, 2.0), 0.5);
+ normalOffsetScale = 0.1 * pFactor * pFactor * sinLight * min(f_shadowfar, 500.0) /
+ xyPerspectiveBias1 / f_textureresolution;
+ z_bias = 1e3 * sinLight / cosLight * (0.5 + f_textureresolution / 1024.0);
+ }
+ else {
+ nNormal = vec3(0.0);
+ cosLight = clamp(dot(v_LightDirection, normalize(vec3(v_LightDirection.x, 0.0, v_LightDirection.z))), 1e-2, 1.0);
+ float sinLight = pow(1 - pow(cosLight, 2.0), 0.5);
+ normalOffsetScale = 0.0;
+ z_bias = 3.6e3 * sinLight / cosLight;
+ }
+ z_bias *= pFactor * pFactor / f_textureresolution / f_shadowfar;
+
+ shadow_position = applyPerspectiveDistortion(m_ShadowViewProj * mWorld * (inVertexPosition + vec4(normalOffsetScale * nNormal, 0.0))).xyz;
+ shadow_position.z -= z_bias;
if (f_timeofday < 0.2) {
adj_shadow_strength = f_shadow_strength * 0.5 *
mtsmoothstep(0.20, 0.25, f_timeofday) *
(1.0 - mtsmoothstep(0.7, 0.8, f_timeofday));
}
- f_normal_length = length(vNormal);
}
#endif
}
uniform float xyPerspectiveBias1;
uniform float zPerspectiveBias;
-vec4 getPerspectiveFactor(in vec4 shadowPosition)
+vec4 getRelativePosition(in vec4 position)
{
- vec2 s = vec2(shadowPosition.x > CameraPos.x ? 1.0 : -1.0, shadowPosition.y > CameraPos.y ? 1.0 : -1.0);
- vec2 l = s * (shadowPosition.xy - CameraPos.xy) / (1.0 - s * CameraPos.xy);
- float pDistance = length(l);
+ vec2 l = position.xy - CameraPos.xy;
+ vec2 s = l / abs(l);
+ s = (1.0 - s * CameraPos.xy);
+ l /= s;
+ return vec4(l, s);
+}
+
+float getPerspectiveFactor(in vec4 relativePosition)
+{
+ float pDistance = length(relativePosition.xy);
float pFactor = pDistance * xyPerspectiveBias0 + xyPerspectiveBias1;
- l /= pFactor;
- shadowPosition.xy = CameraPos.xy * (1.0 - l) + s * l;
- shadowPosition.z *= zPerspectiveBias;
- return shadowPosition;
+ return pFactor;
}
+vec4 applyPerspectiveDistortion(in vec4 position)
+{
+ vec4 l = getRelativePosition(position);
+ float pFactor = getPerspectiveFactor(l);
+ l.xy /= pFactor;
+ position.xy = l.xy * l.zw + CameraPos.xy;
+ position.z *= zPerspectiveBias;
+ return position;
+}
void main()
{
vec4 pos = LightMVP * gl_Vertex;
- tPos = getPerspectiveFactor(LightMVP * gl_Vertex);
+ tPos = applyPerspectiveDistortion(LightMVP * gl_Vertex);
gl_Position = vec4(tPos.xyz, 1.0);
gl_TexCoord[0].st = gl_MultiTexCoord0.st;
uniform float xyPerspectiveBias1;
uniform float zPerspectiveBias;
-vec4 getPerspectiveFactor(in vec4 shadowPosition)
+vec4 getRelativePosition(in vec4 position)
{
- vec2 s = vec2(shadowPosition.x > CameraPos.x ? 1.0 : -1.0, shadowPosition.y > CameraPos.y ? 1.0 : -1.0);
- vec2 l = s * (shadowPosition.xy - CameraPos.xy) / (1.0 - s * CameraPos.xy);
- float pDistance = length(l);
+ vec2 l = position.xy - CameraPos.xy;
+ vec2 s = l / abs(l);
+ s = (1.0 - s * CameraPos.xy);
+ l /= s;
+ return vec4(l, s);
+}
+
+float getPerspectiveFactor(in vec4 relativePosition)
+{
+ float pDistance = length(relativePosition.xy);
float pFactor = pDistance * xyPerspectiveBias0 + xyPerspectiveBias1;
- l /= pFactor;
- shadowPosition.xy = CameraPos.xy * (1.0 - l) + s * l;
- shadowPosition.z *= zPerspectiveBias;
- return shadowPosition;
+ return pFactor;
}
+vec4 applyPerspectiveDistortion(in vec4 position)
+{
+ vec4 l = getRelativePosition(position);
+ float pFactor = getPerspectiveFactor(l);
+ l.xy /= pFactor;
+ position.xy = l.xy * l.zw + CameraPos.xy;
+ position.z *= zPerspectiveBias;
+ return position;
+}
void main()
{
vec4 pos = LightMVP * gl_Vertex;
- tPos = getPerspectiveFactor(pos);
+ tPos = applyPerspectiveDistortion(pos);
gl_Position = vec4(tPos.xyz, 1.0);
gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
draw_wield_tool = _draw_wield_tool;
draw_crosshair = _draw_crosshair;
- if (shadow_renderer)
+ if (shadow_renderer) {
+ // This is necessary to render shadows for animations correctly
+ smgr->getRootSceneNode()->OnAnimate(device->getTimer()->getTime());
shadow_renderer->update();
+ }
beforeDraw();
drawAll();
const core::matrix4 &getFutureProjectionMatrix() const;
core::matrix4 getViewProjMatrix();
- /// Gets the light's far value.
+ /// Gets the light's maximum far value, i.e. the shadow boundary
f32 getMaxFarValue() const
{
return farPlane * BS;
}
+ /// Gets the current far value of the light
+ f32 getFarValue() const
+ {
+ return shadow_frustum.zFar;
+ }
+
/// Gets the light's color.
const video::SColorf &getLightColor() const
f32 ShadowRenderer::getMaxShadowFar() const
{
if (!m_light_list.empty()) {
- float zMax = m_light_list[0].getMaxFarValue();
+ float zMax = m_light_list[0].getFarValue();
return zMax;
}
return 0.0f;
material.BackfaceCulling = false;
material.FrontfaceCulling = true;
- material.PolygonOffsetFactor = 4.0f;
- material.PolygonOffsetDirection = video::EPO_BACK;
- //material.PolygonOffsetDepthBias = 1.0f/4.0f;
- //material.PolygonOffsetSlopeScale = -1.f;
if (m_shadow_map_colored && pass != scene::ESNRP_SOLID) {
material.MaterialType = (video::E_MATERIAL_TYPE) depth_shader_trans;
material.BlendOperation = video::EBO_MIN;
}
- // FIXME: I don't think this is needed here
- map_node->OnAnimate(m_device->getTimer()->getTime());
-
m_driver->setTransform(video::ETS_WORLD,
map_node->getAbsoluteTransformation());
current_mat.BackfaceCulling = true;
current_mat.FrontfaceCulling = false;
- current_mat.PolygonOffsetFactor = 1.0f/2048.0f;
- current_mat.PolygonOffsetDirection = video::EPO_BACK;
- //current_mat.PolygonOffsetDepthBias = 1.0 * 2.8e-6;
- //current_mat.PolygonOffsetSlopeScale = -1.f;
}
m_driver->setTransform(video::ETS_WORLD,
projects / dragonfireclient.git / commitdiff