void cEffect::SetParam(const std::string &lacName, cResourceHandle lParamValue)
{
CGparameter lParam = cgGetNamedEffectParameter(mEffect, lacName.c_str() );
if (lParam)
{
assert(lParamValue.IsValidHandle() );
cTexture *lpTexture = (cTexture*)lParamValue.GetResource();
unsigned luiTextureHandle = lpTexture->GetTextureHandle();
cgGLSetupSampler(lParam, luiTextureHandle);
}
}
/*-------------------------------------------------------------------------
-------------------------------------------------------------------------*/
void FilterBox::Draw(float f)
{
if(!bValid)
return;
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL);
CGbool bRes;
bRes = cgValidateTechnique(cgTechnique);
if(!bRes)
{
bValid = false;
const char * pszErrors = NULL;
fprintf(stderr, "Validation of FilterRect failed");
fprintf(stderr, "CgFx Parse error : %s", pszErrors);
const char *listing = cgGetLastListing(cgContext);
return;
}
//
// intermediate stage : bluring horizontal
//
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb[1]);
glPushAttrib(GL_VIEWPORT_BIT);
glViewport(0,0,bufw,bufh);
cgGLSetupSampler(srcSampler, textureID[0]);
cgSetPassState(cgPassFilterH);
FULLSCRQUAD();
glPopAttrib();
//
// intermediate stage : bluring vertical
//
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb[0]);
glPushAttrib(GL_VIEWPORT_BIT);
glViewport(0,0,bufw,bufh);
cgGLSetupSampler(srcSampler, textureID[1]);
cgSetPassState(cgPassFilterV);
FULLSCRQUAD();
glPopAttrib();
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
//
// Final stage : Blend the final texture to the screen
//
cgGLSetupSampler(tempSampler, textureID[0]);
cgSetPassState(cgPassBlend);
glBlendColor(f,f,f,f);
float xoffset = -1.0f + 2.0f*(float)posx/(float)vpw;
float yoffset = -1.0f + 2.0f*(float)posy/(float)vph;
float xoffset2 = xoffset + 2.0f*(float)width/(float)vpw;
float yoffset2 = yoffset + 2.0f*(float)height/(float)vph;
glBegin(GL_QUADS);
glTexCoord2f(0,0);
glVertex4f(xoffset, yoffset, 0,1);
glTexCoord2f(1,0);
glVertex4f(xoffset2, yoffset,0,1);
glTexCoord2f(1,1);
glVertex4f(xoffset2, yoffset2,0,1);
glTexCoord2f(0,1);
glVertex4f(xoffset, yoffset2,0,1);
glEnd();
cgResetPassState(cgPassBlend);
}
