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From Wojciech Lewandowski, various tweaks to osgShadow shadow mapping classes to improve consistency and enable more debug info output

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This commit is contained in:
Robert Osfield
2011-02-23 16:45:44 +00:00
parent c45717fef0
commit 9cfb248b46
12 changed files with 107 additions and 24 deletions
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46
src/osgShadow/StandardShadowMap.cpp
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@@ -29,6 +29,7 @@
using namespace osgShadow;
#define DISPLAY_SHADOW_TEXEL_TO_PIXEL_ERROR 0
#define FRAGMENT_SHADERS_ONLY 1
StandardShadowMap::StandardShadowMap():
@@ -42,6 +43,50 @@ StandardShadowMap::StandardShadowMap():
_shadowTextureCoordIndex( 1 )
{
#if FRAGMENT_SHADERS_ONLY
_mainFragmentShader = new osg::Shader( osg::Shader::FRAGMENT,
" // following expressions are auto modified - do not change them: \n"
" // gl_TexCoord[0] 0 - can be subsituted with other index \n"
" \n"
"float DynamicShadow( ); \n"
" \n"
"uniform sampler2D baseTexture; \n"
" \n"
"void main(void) \n"
"{ \n"
" vec4 colorAmbientEmissive = gl_FrontLightModelProduct.sceneColor; \n"
" // Add ambient from Light of index = 0 \n"
" colorAmbientEmissive += gl_FrontLightProduct[0].ambient; \n"
" vec4 color = texture2D( baseTexture, gl_TexCoord[0].xy ); \n"
" color *= mix( colorAmbientEmissive, gl_Color, DynamicShadow() ); \n"
#if DISPLAY_SHADOW_TEXEL_TO_PIXEL_ERROR
" color.xy = abs( dFdy( gl_TexCoord[1].xy / gl_TexCoord[1].w ) )* 1024.0; \n"
" color.z = color.y; \n"
" color.x = color.z; \n"
" color.y = color.z; \n"
" color.a = 1.0; \n"
#endif
// " float fog = clamp((gl_Fog.end - gl_FogFragCoord)*gl_Fog.scale, 0.,1.);\n"
// " color.rgb = mix( gl_Fog.color.rgb, color.rgb, fog ); \n"
" gl_FragColor = color; \n"
"} \n" );
_shadowFragmentShader = new osg::Shader( osg::Shader::FRAGMENT,
" // following expressions are auto modified - do not change them: \n"
" // gl_TexCoord[1] 1 - can be subsituted with other index \n"
" \n"
"uniform sampler2DShadow shadowTexture; \n"
" \n"
"float DynamicShadow( ) \n"
"{ \n"
" return shadow2DProj( shadowTexture, gl_TexCoord[1] ).r; \n"
"} \n" );
_shadowVertexShader = NULL;
_mainVertexShader = NULL;
#else
_mainFragmentShader = new osg::Shader( osg::Shader::FRAGMENT,
" // following expressions are auto modified - do not change them: \n"
" // gl_TexCoord[0] 0 - can be subsituted with other index \n"
@@ -287,6 +332,7 @@ StandardShadowMap::StandardShadowMap():
" \n"
" gl_FogFragCoord = ecLen; \n"
"} \n" );
#endif
}
StandardShadowMap::StandardShadowMap(const StandardShadowMap& copy, const osg::CopyOp& copyop) :