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Add fog

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This commit is contained in:
scrawl 2016-02-16 22:32:59 +01:00
parent 41e1fd407d
commit 044e0a829a
4 changed files with 22 additions and 2 deletions
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7
apps/openmw/mwrender/characterpreview.cpp
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@ -2,6 +2,7 @@
#include <iostream>
#include <osg/Fog>
#include <osg/Texture2D>
#include <osg/Camera>
#include <osg/PositionAttitudeTransform>
@ -102,6 +103,12 @@ namespace MWRender
stateset->setMode(GL_LIGHTING, osg::StateAttribute::ON);
stateset->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
stateset->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
// assign large value to effectively turn off fog
// shaders don't respect glDisable(GL_FOG)
osg::ref_ptr<osg::Fog> fog (new osg::Fog);
fog->setStart(10000000);
fog->setEnd(10000000);
stateset->setAttributeAndModes(fog, osg::StateAttribute::OFF|osg::StateAttribute::OVERRIDE);
osg::ref_ptr<osg::LightModel> lightmodel = new osg::LightModel;
lightmodel->setAmbientIntensity(osg::Vec4(0.25, 0.25, 0.25, 1.0));

7
apps/openmw/mwrender/localmap.cpp
View file

@ -180,7 +180,12 @@ osg::ref_ptr<osg::Camera> LocalMap::createOrthographicCamera(float x, float y, f
stateset->setMode(GL_LIGHTING, osg::StateAttribute::ON);
stateset->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
stateset->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
stateset->setMode(GL_FOG, osg::StateAttribute::OFF|osg::StateAttribute::OVERRIDE);
// assign large value to effectively turn off fog
// shaders don't respect glDisable(GL_FOG)
osg::ref_ptr<osg::Fog> fog (new osg::Fog);
fog->setStart(10000000);
fog->setEnd(10000000);
stateset->setAttributeAndModes(fog, osg::StateAttribute::OFF|osg::StateAttribute::OVERRIDE);
osg::ref_ptr<osg::LightModel> lightmodel = new osg::LightModel;
lightmodel->setAmbientIntensity(osg::Vec4(0.3f, 0.3f, 0.3f, 1.f));

7
files/shaders/objects_fragment.glsl
View file

@ -5,11 +5,16 @@ uniform sampler2D diffuseMap;
varying vec2 diffuseMapUV;
#endif
varying float depth;
void main()
{
#if @diffuseMap
gl_FragData[0] = texture2D(diffuseMap, diffuseMapUV);
#else
gl_FragData[0] = vec4(1,1,1,1);
gl_FragData[0] = vec4(1.0, 1.0, 1.0, 1.0);
#endif
float fogValue = clamp((depth - gl_Fog.start) * gl_Fog.scale, 0.0, 1.0);
gl_FragData[0].xyz = mix(gl_FragData[0].xyz, gl_Fog.color.xyz, fogValue);
}

3
files/shaders/objects_vertex.glsl
View file

@ -4,9 +4,12 @@
varying vec2 diffuseMapUV;
#endif
varying float depth;
void main(void)
{
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
depth = gl_Position.z;
#if @diffuseMap
diffuseMapUV = gl_MultiTexCoord@diffuseMapUV.xy;