2018-12-10 17:25:29 +01:00
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#ifndef _LIGHT_MOBILE_GLSL_
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#define _LIGHT_MOBILE_GLSL_
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#include "compiled.inc"
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#include "std/brdf.glsl"
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#ifdef _ShadowMap
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#include "std/shadows.glsl"
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#endif
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#ifdef _ShadowMap
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2021-03-15 01:51:36 +01:00
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#ifdef _SinglePoint
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#ifdef _Spot
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uniform sampler2DShadow shadowMapSpot[1];
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uniform mat4 LWVPSpot[1];
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#else
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uniform samplerCubeShadow shadowMapPoint[1];
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uniform vec2 lightProj;
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#endif
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Add support for shadow map atlasing
With this it is now possible to enable atlasing of shadow maps, which solves the existing limitation of 4 lights in a scene. This is done by
grouping the rendering of shadow maps, that currently are drawn into their own images for each light, into one or several big textures. This was
done because the openGL and webGL version Armory targets do not support dynamic indexing of shadowMapSamplers, meaning that the index that
access an array of shadow maps has to be know by the compiler before hand so it can be unrolled into if/else branching. By instead simply
using a big shadow map texture and moving the dynamic part to other types of array that are allowed dynamic indexing like vec4 and mat4, this
limitation was solved.
The premise was simple enough for the shader part, but for the Haxe part, managing and solving where lights shadow maps should go in a shadow map
can be tricky. So to keep track and solve this, ShadowMapAtlas and ShadowMapTile were created. These classes have the minimally required logic
to solve the basic features needed for this problem: defining some kind of abstraction to prevent overlapping of shadowmaps, finding available
space, assigning such space efficiently, locking and freeing this space, etc. This functionality it is used by drawShadowMapAtlas(), which is a
modified version of drawShadowMap().
Shadow map atlases are represented with perfectly balanced 4-ary trees, where each tree of the previous definition represents a "tile" or slice
that results from dividing a square that represents the image into 4 slices or sub-images. The root of this "tile" it's a reference to the
tile-slice, and this tile is divided in 4 slices, and the process is repeated depth-times. If depth is 1, slices are kept at just the initial
4 tiles of max size, which is the default size of the shadow map. #arm_shadowmap_atlas_lod allows controlling if code to support more depth
levels is added or not when compiling.
the tiles that populate atlases tile trees are simply a data structure that contains a reference to the light they are linked to, inner
subtiles in case LOD is enabled, coordinates to where this tile starts in the atlas that go from 0 to Shadow Map Size, and a reference to a
linked tile for LOD. This simple definition allows tiles having a theoretically small memory footprint, but in turn this simplicity might make
some functionality that might be responsibility of tiles (for example knowing if they are overlapping) a responsibility of the ones that
utilizes tiles instead. This decision may complicate maintenance so it is to be revised in future iterations of this feature.
2021-01-27 02:01:06 +01:00
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#endif
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2021-03-15 01:51:36 +01:00
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#ifdef _Clusters
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#ifdef _SingleAtlas
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//!uniform sampler2DShadow shadowMapAtlas;
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#endif
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uniform vec2 lightProj;
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Add support for shadow map atlasing
With this it is now possible to enable atlasing of shadow maps, which solves the existing limitation of 4 lights in a scene. This is done by
grouping the rendering of shadow maps, that currently are drawn into their own images for each light, into one or several big textures. This was
done because the openGL and webGL version Armory targets do not support dynamic indexing of shadowMapSamplers, meaning that the index that
access an array of shadow maps has to be know by the compiler before hand so it can be unrolled into if/else branching. By instead simply
using a big shadow map texture and moving the dynamic part to other types of array that are allowed dynamic indexing like vec4 and mat4, this
limitation was solved.
The premise was simple enough for the shader part, but for the Haxe part, managing and solving where lights shadow maps should go in a shadow map
can be tricky. So to keep track and solve this, ShadowMapAtlas and ShadowMapTile were created. These classes have the minimally required logic
to solve the basic features needed for this problem: defining some kind of abstraction to prevent overlapping of shadowmaps, finding available
space, assigning such space efficiently, locking and freeing this space, etc. This functionality it is used by drawShadowMapAtlas(), which is a
modified version of drawShadowMap().
Shadow map atlases are represented with perfectly balanced 4-ary trees, where each tree of the previous definition represents a "tile" or slice
that results from dividing a square that represents the image into 4 slices or sub-images. The root of this "tile" it's a reference to the
tile-slice, and this tile is divided in 4 slices, and the process is repeated depth-times. If depth is 1, slices are kept at just the initial
4 tiles of max size, which is the default size of the shadow map. #arm_shadowmap_atlas_lod allows controlling if code to support more depth
levels is added or not when compiling.
the tiles that populate atlases tile trees are simply a data structure that contains a reference to the light they are linked to, inner
subtiles in case LOD is enabled, coordinates to where this tile starts in the atlas that go from 0 to Shadow Map Size, and a reference to a
linked tile for LOD. This simple definition allows tiles having a theoretically small memory footprint, but in turn this simplicity might make
some functionality that might be responsibility of tiles (for example knowing if they are overlapping) a responsibility of the ones that
utilizes tiles instead. This decision may complicate maintenance so it is to be revised in future iterations of this feature.
2021-01-27 02:01:06 +01:00
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#ifdef _ShadowMapAtlas
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#ifndef _SingleAtlas
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2021-03-15 01:51:36 +01:00
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uniform sampler2DShadow shadowMapAtlasPoint;
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Add support for shadow map atlasing
With this it is now possible to enable atlasing of shadow maps, which solves the existing limitation of 4 lights in a scene. This is done by
grouping the rendering of shadow maps, that currently are drawn into their own images for each light, into one or several big textures. This was
done because the openGL and webGL version Armory targets do not support dynamic indexing of shadowMapSamplers, meaning that the index that
access an array of shadow maps has to be know by the compiler before hand so it can be unrolled into if/else branching. By instead simply
using a big shadow map texture and moving the dynamic part to other types of array that are allowed dynamic indexing like vec4 and mat4, this
limitation was solved.
The premise was simple enough for the shader part, but for the Haxe part, managing and solving where lights shadow maps should go in a shadow map
can be tricky. So to keep track and solve this, ShadowMapAtlas and ShadowMapTile were created. These classes have the minimally required logic
to solve the basic features needed for this problem: defining some kind of abstraction to prevent overlapping of shadowmaps, finding available
space, assigning such space efficiently, locking and freeing this space, etc. This functionality it is used by drawShadowMapAtlas(), which is a
modified version of drawShadowMap().
Shadow map atlases are represented with perfectly balanced 4-ary trees, where each tree of the previous definition represents a "tile" or slice
that results from dividing a square that represents the image into 4 slices or sub-images. The root of this "tile" it's a reference to the
tile-slice, and this tile is divided in 4 slices, and the process is repeated depth-times. If depth is 1, slices are kept at just the initial
4 tiles of max size, which is the default size of the shadow map. #arm_shadowmap_atlas_lod allows controlling if code to support more depth
levels is added or not when compiling.
the tiles that populate atlases tile trees are simply a data structure that contains a reference to the light they are linked to, inner
subtiles in case LOD is enabled, coordinates to where this tile starts in the atlas that go from 0 to Shadow Map Size, and a reference to a
linked tile for LOD. This simple definition allows tiles having a theoretically small memory footprint, but in turn this simplicity might make
some functionality that might be responsibility of tiles (for example knowing if they are overlapping) a responsibility of the ones that
utilizes tiles instead. This decision may complicate maintenance so it is to be revised in future iterations of this feature.
2021-01-27 02:01:06 +01:00
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#endif
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#else
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2021-03-15 01:51:36 +01:00
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uniform samplerCubeShadow shadowMapPoint[4];
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#endif
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#ifdef _Spot
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#ifdef _ShadowMapAtlas
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#ifndef _SingleAtlas
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uniform sampler2DShadow shadowMapAtlasSpot;
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#endif
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#else
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uniform sampler2DShadow shadowMapSpot[maxLightsCluster];
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#endif
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uniform mat4 LWVPSpotArray[maxLightsCluster];
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Add support for shadow map atlasing
With this it is now possible to enable atlasing of shadow maps, which solves the existing limitation of 4 lights in a scene. This is done by
grouping the rendering of shadow maps, that currently are drawn into their own images for each light, into one or several big textures. This was
done because the openGL and webGL version Armory targets do not support dynamic indexing of shadowMapSamplers, meaning that the index that
access an array of shadow maps has to be know by the compiler before hand so it can be unrolled into if/else branching. By instead simply
using a big shadow map texture and moving the dynamic part to other types of array that are allowed dynamic indexing like vec4 and mat4, this
limitation was solved.
The premise was simple enough for the shader part, but for the Haxe part, managing and solving where lights shadow maps should go in a shadow map
can be tricky. So to keep track and solve this, ShadowMapAtlas and ShadowMapTile were created. These classes have the minimally required logic
to solve the basic features needed for this problem: defining some kind of abstraction to prevent overlapping of shadowmaps, finding available
space, assigning such space efficiently, locking and freeing this space, etc. This functionality it is used by drawShadowMapAtlas(), which is a
modified version of drawShadowMap().
Shadow map atlases are represented with perfectly balanced 4-ary trees, where each tree of the previous definition represents a "tile" or slice
that results from dividing a square that represents the image into 4 slices or sub-images. The root of this "tile" it's a reference to the
tile-slice, and this tile is divided in 4 slices, and the process is repeated depth-times. If depth is 1, slices are kept at just the initial
4 tiles of max size, which is the default size of the shadow map. #arm_shadowmap_atlas_lod allows controlling if code to support more depth
levels is added or not when compiling.
the tiles that populate atlases tile trees are simply a data structure that contains a reference to the light they are linked to, inner
subtiles in case LOD is enabled, coordinates to where this tile starts in the atlas that go from 0 to Shadow Map Size, and a reference to a
linked tile for LOD. This simple definition allows tiles having a theoretically small memory footprint, but in turn this simplicity might make
some functionality that might be responsibility of tiles (for example knowing if they are overlapping) a responsibility of the ones that
utilizes tiles instead. This decision may complicate maintenance so it is to be revised in future iterations of this feature.
2021-01-27 02:01:06 +01:00
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#endif
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2018-12-10 17:25:29 +01:00
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#endif
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#endif
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vec3 sampleLight(const vec3 p, const vec3 n, const vec3 v, const float dotNV, const vec3 lp, const vec3 lightCol,
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const vec3 albedo, const float rough, const float spec, const vec3 f0
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#ifdef _ShadowMap
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2020-07-13 23:28:43 +02:00
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, int index, float bias, bool receiveShadow
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2018-12-10 17:25:29 +01:00
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#endif
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#ifdef _Spot
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, bool isSpot, float spotA, float spotB, vec3 spotDir
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#endif
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) {
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vec3 ld = lp - p;
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vec3 l = normalize(ld);
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vec3 h = normalize(v + l);
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float dotNH = dot(n, h);
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float dotVH = dot(v, h);
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float dotNL = dot(n, l);
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vec3 direct = albedo * max(dotNL, 0.0) +
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specularBRDF(f0, rough, dotNL, dotNH, dotNV, dotVH) * spec;
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direct *= lightCol;
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direct *= attenuate(distance(p, lp));
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#ifdef _Spot
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if (isSpot) {
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float spotEffect = dot(spotDir, l); // lightDir
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// x - cutoff, y - cutoff - exponent
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if (spotEffect < spotA) {
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direct *= smoothstep(spotB, spotA, spotEffect);
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}
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#ifdef _ShadowMap
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2020-07-13 23:36:49 +02:00
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if (receiveShadow) {
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#ifdef _SinglePoint
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Add support for shadow map atlasing
With this it is now possible to enable atlasing of shadow maps, which solves the existing limitation of 4 lights in a scene. This is done by
grouping the rendering of shadow maps, that currently are drawn into their own images for each light, into one or several big textures. This was
done because the openGL and webGL version Armory targets do not support dynamic indexing of shadowMapSamplers, meaning that the index that
access an array of shadow maps has to be know by the compiler before hand so it can be unrolled into if/else branching. By instead simply
using a big shadow map texture and moving the dynamic part to other types of array that are allowed dynamic indexing like vec4 and mat4, this
limitation was solved.
The premise was simple enough for the shader part, but for the Haxe part, managing and solving where lights shadow maps should go in a shadow map
can be tricky. So to keep track and solve this, ShadowMapAtlas and ShadowMapTile were created. These classes have the minimally required logic
to solve the basic features needed for this problem: defining some kind of abstraction to prevent overlapping of shadowmaps, finding available
space, assigning such space efficiently, locking and freeing this space, etc. This functionality it is used by drawShadowMapAtlas(), which is a
modified version of drawShadowMap().
Shadow map atlases are represented with perfectly balanced 4-ary trees, where each tree of the previous definition represents a "tile" or slice
that results from dividing a square that represents the image into 4 slices or sub-images. The root of this "tile" it's a reference to the
tile-slice, and this tile is divided in 4 slices, and the process is repeated depth-times. If depth is 1, slices are kept at just the initial
4 tiles of max size, which is the default size of the shadow map. #arm_shadowmap_atlas_lod allows controlling if code to support more depth
levels is added or not when compiling.
the tiles that populate atlases tile trees are simply a data structure that contains a reference to the light they are linked to, inner
subtiles in case LOD is enabled, coordinates to where this tile starts in the atlas that go from 0 to Shadow Map Size, and a reference to a
linked tile for LOD. This simple definition allows tiles having a theoretically small memory footprint, but in turn this simplicity might make
some functionality that might be responsibility of tiles (for example knowing if they are overlapping) a responsibility of the ones that
utilizes tiles instead. This decision may complicate maintenance so it is to be revised in future iterations of this feature.
2021-01-27 02:01:06 +01:00
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vec4 lPos = LWVPSpot[0] * vec4(p + n * bias * 10, 1.0);
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2020-07-13 23:36:49 +02:00
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direct *= shadowTest(shadowMapSpot[0], lPos.xyz / lPos.w, bias);
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#endif
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#ifdef _Clusters
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Add support for shadow map atlasing
With this it is now possible to enable atlasing of shadow maps, which solves the existing limitation of 4 lights in a scene. This is done by
grouping the rendering of shadow maps, that currently are drawn into their own images for each light, into one or several big textures. This was
done because the openGL and webGL version Armory targets do not support dynamic indexing of shadowMapSamplers, meaning that the index that
access an array of shadow maps has to be know by the compiler before hand so it can be unrolled into if/else branching. By instead simply
using a big shadow map texture and moving the dynamic part to other types of array that are allowed dynamic indexing like vec4 and mat4, this
limitation was solved.
The premise was simple enough for the shader part, but for the Haxe part, managing and solving where lights shadow maps should go in a shadow map
can be tricky. So to keep track and solve this, ShadowMapAtlas and ShadowMapTile were created. These classes have the minimally required logic
to solve the basic features needed for this problem: defining some kind of abstraction to prevent overlapping of shadowmaps, finding available
space, assigning such space efficiently, locking and freeing this space, etc. This functionality it is used by drawShadowMapAtlas(), which is a
modified version of drawShadowMap().
Shadow map atlases are represented with perfectly balanced 4-ary trees, where each tree of the previous definition represents a "tile" or slice
that results from dividing a square that represents the image into 4 slices or sub-images. The root of this "tile" it's a reference to the
tile-slice, and this tile is divided in 4 slices, and the process is repeated depth-times. If depth is 1, slices are kept at just the initial
4 tiles of max size, which is the default size of the shadow map. #arm_shadowmap_atlas_lod allows controlling if code to support more depth
levels is added or not when compiling.
the tiles that populate atlases tile trees are simply a data structure that contains a reference to the light they are linked to, inner
subtiles in case LOD is enabled, coordinates to where this tile starts in the atlas that go from 0 to Shadow Map Size, and a reference to a
linked tile for LOD. This simple definition allows tiles having a theoretically small memory footprint, but in turn this simplicity might make
some functionality that might be responsibility of tiles (for example knowing if they are overlapping) a responsibility of the ones that
utilizes tiles instead. This decision may complicate maintenance so it is to be revised in future iterations of this feature.
2021-01-27 02:01:06 +01:00
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vec4 lPos = LWVPSpotArray[index] * vec4(p + n * bias * 10, 1.0);
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#ifdef _ShadowMapAtlas
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direct *= shadowTest(
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#ifndef _SingleAtlas
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shadowMapAtlasSpot
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#else
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shadowMapAtlas
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#endif
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2021-02-25 19:09:23 +01:00
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, lPos.xyz / lPos.w, bias
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Add support for shadow map atlasing
With this it is now possible to enable atlasing of shadow maps, which solves the existing limitation of 4 lights in a scene. This is done by
grouping the rendering of shadow maps, that currently are drawn into their own images for each light, into one or several big textures. This was
done because the openGL and webGL version Armory targets do not support dynamic indexing of shadowMapSamplers, meaning that the index that
access an array of shadow maps has to be know by the compiler before hand so it can be unrolled into if/else branching. By instead simply
using a big shadow map texture and moving the dynamic part to other types of array that are allowed dynamic indexing like vec4 and mat4, this
limitation was solved.
The premise was simple enough for the shader part, but for the Haxe part, managing and solving where lights shadow maps should go in a shadow map
can be tricky. So to keep track and solve this, ShadowMapAtlas and ShadowMapTile were created. These classes have the minimally required logic
to solve the basic features needed for this problem: defining some kind of abstraction to prevent overlapping of shadowmaps, finding available
space, assigning such space efficiently, locking and freeing this space, etc. This functionality it is used by drawShadowMapAtlas(), which is a
modified version of drawShadowMap().
Shadow map atlases are represented with perfectly balanced 4-ary trees, where each tree of the previous definition represents a "tile" or slice
that results from dividing a square that represents the image into 4 slices or sub-images. The root of this "tile" it's a reference to the
tile-slice, and this tile is divided in 4 slices, and the process is repeated depth-times. If depth is 1, slices are kept at just the initial
4 tiles of max size, which is the default size of the shadow map. #arm_shadowmap_atlas_lod allows controlling if code to support more depth
levels is added or not when compiling.
the tiles that populate atlases tile trees are simply a data structure that contains a reference to the light they are linked to, inner
subtiles in case LOD is enabled, coordinates to where this tile starts in the atlas that go from 0 to Shadow Map Size, and a reference to a
linked tile for LOD. This simple definition allows tiles having a theoretically small memory footprint, but in turn this simplicity might make
some functionality that might be responsibility of tiles (for example knowing if they are overlapping) a responsibility of the ones that
utilizes tiles instead. This decision may complicate maintenance so it is to be revised in future iterations of this feature.
2021-01-27 02:01:06 +01:00
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);
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#else
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if (index == 0) direct *= shadowTest(shadowMapSpot[0], lPos.xyz / lPos.w, bias);
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else if (index == 1) direct *= shadowTest(shadowMapSpot[1], lPos.xyz / lPos.w, bias);
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else if (index == 2) direct *= shadowTest(shadowMapSpot[2], lPos.xyz / lPos.w, bias);
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else if (index == 3) direct *= shadowTest(shadowMapSpot[3], lPos.xyz / lPos.w, bias);
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#endif
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2020-07-13 23:36:49 +02:00
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#endif
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}
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2018-12-10 17:25:29 +01:00
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#endif
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return direct;
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}
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#endif
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#ifdef _ShadowMap
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2021-03-15 01:51:36 +01:00
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2020-07-13 23:36:49 +02:00
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if (receiveShadow) {
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#ifdef _SinglePoint
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2021-03-15 01:51:36 +01:00
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#ifndef _Spot
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2020-07-13 23:36:49 +02:00
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direct *= PCFCube(shadowMapPoint[0], ld, -l, bias, lightProj, n);
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#endif
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2021-03-15 01:51:36 +01:00
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#endif
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2020-07-13 23:36:49 +02:00
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#ifdef _Clusters
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Add support for shadow map atlasing
With this it is now possible to enable atlasing of shadow maps, which solves the existing limitation of 4 lights in a scene. This is done by
grouping the rendering of shadow maps, that currently are drawn into their own images for each light, into one or several big textures. This was
done because the openGL and webGL version Armory targets do not support dynamic indexing of shadowMapSamplers, meaning that the index that
access an array of shadow maps has to be know by the compiler before hand so it can be unrolled into if/else branching. By instead simply
using a big shadow map texture and moving the dynamic part to other types of array that are allowed dynamic indexing like vec4 and mat4, this
limitation was solved.
The premise was simple enough for the shader part, but for the Haxe part, managing and solving where lights shadow maps should go in a shadow map
can be tricky. So to keep track and solve this, ShadowMapAtlas and ShadowMapTile were created. These classes have the minimally required logic
to solve the basic features needed for this problem: defining some kind of abstraction to prevent overlapping of shadowmaps, finding available
space, assigning such space efficiently, locking and freeing this space, etc. This functionality it is used by drawShadowMapAtlas(), which is a
modified version of drawShadowMap().
Shadow map atlases are represented with perfectly balanced 4-ary trees, where each tree of the previous definition represents a "tile" or slice
that results from dividing a square that represents the image into 4 slices or sub-images. The root of this "tile" it's a reference to the
tile-slice, and this tile is divided in 4 slices, and the process is repeated depth-times. If depth is 1, slices are kept at just the initial
4 tiles of max size, which is the default size of the shadow map. #arm_shadowmap_atlas_lod allows controlling if code to support more depth
levels is added or not when compiling.
the tiles that populate atlases tile trees are simply a data structure that contains a reference to the light they are linked to, inner
subtiles in case LOD is enabled, coordinates to where this tile starts in the atlas that go from 0 to Shadow Map Size, and a reference to a
linked tile for LOD. This simple definition allows tiles having a theoretically small memory footprint, but in turn this simplicity might make
some functionality that might be responsibility of tiles (for example knowing if they are overlapping) a responsibility of the ones that
utilizes tiles instead. This decision may complicate maintenance so it is to be revised in future iterations of this feature.
2021-01-27 02:01:06 +01:00
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#ifdef _ShadowMapAtlas
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direct *= PCFFakeCube(
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#ifndef _SingleAtlas
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shadowMapAtlasPoint
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#else
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shadowMapAtlas
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#endif
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, ld, -l, bias, lightProj, n, index
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);
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#else
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if (index == 0) direct *= PCFCube(shadowMapPoint[0], ld, -l, bias, lightProj, n);
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else if (index == 1) direct *= PCFCube(shadowMapPoint[1], ld, -l, bias, lightProj, n);
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else if (index == 2) direct *= PCFCube(shadowMapPoint[2], ld, -l, bias, lightProj, n);
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else if (index == 3) direct *= PCFCube(shadowMapPoint[3], ld, -l, bias, lightProj, n);
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#endif
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2020-07-13 23:36:49 +02:00
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#endif
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}
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2018-12-10 17:25:29 +01:00
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#endif
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return direct;
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}
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#endif
|