FGFS-4.1/OpenSceneGraph
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From Pavel Moloshtan, added GL_ARB_shadow_support to osg::Texture.

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This commit is contained in:
Robert Osfield
2003-12-17 19:26:16 +00:00
parent 1e361017c8
commit 8fefec9f47
2 changed files with 63 additions and 4 deletions
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28
src/osg/Texture.cpp
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@@ -174,7 +174,10 @@ Texture::Texture():
_unrefImageDataAfterApply(false),
_borderColor(0.0, 0.0, 0.0, 0.0),
_internalFormatMode(USE_IMAGE_DATA_FORMAT),
_internalFormat(0)
_internalFormat(0),
_use_shadow_comparison(false),
_shadow_compare_func(LEQUAL),
_shadow_texture_mode(LUMINANCE)
{
}
@@ -190,7 +193,10 @@ Texture::Texture(const Texture& text,const CopyOp& copyop):
_unrefImageDataAfterApply(text._unrefImageDataAfterApply),
_borderColor(text._borderColor),
_internalFormatMode(text._internalFormatMode),
_internalFormat(text._internalFormat)
_internalFormat(text._internalFormat),
_use_shadow_comparison(text._use_shadow_comparison),
_shadow_compare_func(text._shadow_compare_func),
_shadow_texture_mode(text._shadow_texture_mode)
{
}
@@ -211,6 +217,9 @@ int Texture::compareTexture(const Texture& rhs) const
COMPARE_StateAttribute_Parameter(_useHardwareMipMapGeneration)
COMPARE_StateAttribute_Parameter(_internalFormatMode)
COMPARE_StateAttribute_Parameter(_internalFormat)
COMPARE_StateAttribute_Parameter(_use_shadow_comparison)
COMPARE_StateAttribute_Parameter(_shadow_compare_func)
COMPARE_StateAttribute_Parameter(_shadow_texture_mode)
return 0;
}
@@ -474,6 +483,20 @@ void Texture::applyTexParameters(GLenum target, State& state) const
glTexParameterfv(target, GL_TEXTURE_BORDER_COLOR, _borderColor.ptr());
}
if (extensions->isShadowSupported() && target == GL_TEXTURE_2D)
{
if (_use_shadow_comparison)
{
glTexParameteri(target, GL_TEXTURE_COMPARE_MODE_ARB, GL_COMPARE_R_TO_TEXTURE);
glTexParameteri(target, GL_TEXTURE_COMPARE_FUNC_ARB, _shadow_compare_func);
glTexParameteri(target, GL_DEPTH_TEXTURE_MODE_ARB, _shadow_texture_mode);
}
else
{
glTexParameteri(target, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);
}
}
getTextureParameterDirty(state.getContextID()) = false;
}
@@ -1038,6 +1061,7 @@ void Texture::Extensions::setupGLExtenions()
_isTextureBorderClampSupported = isGLExtensionSupported("GL_ARB_texture_border_clamp");
_isGenerateMipMapSupported = (strncmp((const char*)glGetString(GL_VERSION),"1.4",3)>=0) ||
isGLExtensionSupported("GL_SGIS_generate_mipmap");
_isShadowSupported = isGLExtensionSupported("GL_ARB_shadow");
glGetIntegerv(GL_MAX_TEXTURE_SIZE,&_maxTextureSize);