C++ LLGLSLShader::uniform4fv方法代码示例

void LLDrawPoolTerrain::renderFullShader()
{
	// Hack! Get the region that this draw pool is rendering from!
	LLViewerRegion *regionp = mDrawFace[0]->getDrawable()->getVObj()->getRegion();
	LLVLComposition *compp = regionp->getComposition();
	LLViewerTexture *detail_texture0p = compp->mDetailTextures[0];
	LLViewerTexture *detail_texture1p = compp->mDetailTextures[1];
	LLViewerTexture *detail_texture2p = compp->mDetailTextures[2];
	LLViewerTexture *detail_texture3p = compp->mDetailTextures[3];

	LLVector3d region_origin_global = gAgent.getRegion()->getOriginGlobal();
	F32 offset_x = (F32)fmod(region_origin_global.mdV[VX], 1.0/(F64)sDetailScale)*sDetailScale;
	F32 offset_y = (F32)fmod(region_origin_global.mdV[VY], 1.0/(F64)sDetailScale)*sDetailScale;

	LLVector4 tp0, tp1;
	
	tp0.setVec(sDetailScale, 0.0f, 0.0f, offset_x);
	tp1.setVec(0.0f, sDetailScale, 0.0f, offset_y);

	//
	// detail texture 0
	//
	S32 detail0 = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0);
	gGL.getTexUnit(detail0)->bind(detail_texture0p);
	gGL.getTexUnit(0)->activate();

	LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
	llassert(shader);
		
	shader->uniform4fv("object_plane_s", 1, tp0.mV);
	shader->uniform4fv("object_plane_t", 1, tp1.mV);

	gGL.matrixMode(LLRender::MM_TEXTURE);
	gGL.loadIdentity();
	gGL.matrixMode(LLRender::MM_MODELVIEW);

	//
	// detail texture 1
	//
	S32 detail1 = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_DETAIL1); 
	gGL.getTexUnit(detail1)->bind(detail_texture1p);
	
	/// ALPHA TEXTURE COORDS 0:
	gGL.getTexUnit(1)->activate();
	gGL.matrixMode(LLRender::MM_TEXTURE);
	gGL.loadIdentity();
	gGL.matrixMode(LLRender::MM_MODELVIEW);
	
	// detail texture 2
	//
	S32 detail2 = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_DETAIL2);
	gGL.getTexUnit(detail2)->bind(detail_texture2p);

	gGL.getTexUnit(2)->activate();
	
	/// ALPHA TEXTURE COORDS 1:
	gGL.matrixMode(LLRender::MM_TEXTURE);
	gGL.loadIdentity();
	gGL.translatef(-2.f, 0.f, 0.f);
	gGL.matrixMode(LLRender::MM_MODELVIEW);

	//
	// detail texture 3
	//
	S32 detail3 = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_DETAIL3);
	gGL.getTexUnit(detail3)->bind(detail_texture3p);
	
	/// ALPHA TEXTURE COORDS 2:
	gGL.getTexUnit(3)->activate();
	gGL.matrixMode(LLRender::MM_TEXTURE);
	gGL.loadIdentity();
	gGL.translatef(-1.f, 0.f, 0.f);
	gGL.matrixMode(LLRender::MM_MODELVIEW);

	//
	// Alpha Ramp 
	//
	S32 alpha_ramp = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_ALPHARAMP);
	gGL.getTexUnit(alpha_ramp)->bind(m2DAlphaRampImagep);
		
	// GL_BLEND disabled by default
	drawLoop();

	// Disable multitexture
	sShader->disableTexture(LLViewerShaderMgr::TERRAIN_ALPHARAMP);
	sShader->disableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0);
	sShader->disableTexture(LLViewerShaderMgr::TERRAIN_DETAIL1);
	sShader->disableTexture(LLViewerShaderMgr::TERRAIN_DETAIL2);
	sShader->disableTexture(LLViewerShaderMgr::TERRAIN_DETAIL3);

	gGL.getTexUnit(alpha_ramp)->unbind(LLTexUnit::TT_TEXTURE);
	gGL.getTexUnit(4)->disable();
	gGL.getTexUnit(4)->activate();
	
	gGL.getTexUnit(detail3)->unbind(LLTexUnit::TT_TEXTURE);
	gGL.getTexUnit(3)->disable();
	gGL.getTexUnit(3)->activate();
	
	gGL.matrixMode(LLRender::MM_TEXTURE);
	gGL.loadIdentity();
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	if (reftex > -1)
	{
		gGL.getTexUnit(reftex)->activate();
		gGL.getTexUnit(reftex)->bind(&gPipeline.mWaterRef);
		gGL.getTexUnit(0)->activate();
	}	

	//bind normal map
	S32 bumpTex = shader->enableTexture(LLViewerShaderMgr::BUMP_MAP);

	LLWaterParamManager * param_mgr = LLWaterParamManager::instance();

	// change mWaterNormp if needed
	if (mWaterNormp->getID() != param_mgr->getNormalMapID())
	{
		mWaterNormp = LLViewerTextureManager::getFetchedTexture(param_mgr->getNormalMapID());
	}

	mWaterNormp->addTextureStats(1024.f*1024.f);
	gGL.getTexUnit(bumpTex)->bind(mWaterNormp) ;
	if (gSavedSettings.getBOOL("RenderWaterMipNormal"))
	{
		mWaterNormp->setFilteringOption(LLTexUnit::TFO_ANISOTROPIC);
	}
	else 
	{
		mWaterNormp->setFilteringOption(LLTexUnit::TFO_POINT);
	}
	
	S32 screentex = shader->enableTexture(LLViewerShaderMgr::WATER_SCREENTEX);	
		
	if (screentex > -1)
	{
		shader->uniform4fv(LLViewerShaderMgr::WATER_FOGCOLOR, 1, sWaterFogColor.mV);
		shader->uniform1f(LLViewerShaderMgr::WATER_FOGDENSITY, 
			param_mgr->getFogDensity());
		gPipeline.mWaterDis.bindTexture(0, screentex);
	}
	
	stop_glerror();
	
	gGL.getTexUnit(screentex)->bind(&gPipeline.mWaterDis);	

	if (mVertexShaderLevel == 1)
	{
		sWaterFogColor.mV[3] = param_mgr->mDensitySliderValue;
		shader->uniform4fv(LLViewerShaderMgr::WATER_FOGCOLOR, 1, sWaterFogColor.mV);
	}

	F32 screenRes[] = 
	{
		1.f/gGLViewport[2],
		1.f/gGLViewport[3]
	};
	shader->uniform2fv("screenRes", 1, screenRes);
	stop_glerror();
	
	S32 diffTex = shader->enableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
	stop_glerror();
	
	light_dir.normVec();
	sLightDir = light_dir;
	
	light_diffuse *= 6.f;

	//shader->uniformMatrix4fv("inverse_ref", 1, GL_FALSE, (GLfloat*) gGLObliqueProjectionInverse.mMatrix);

//.........这里部分代码省略.........
	// however it works well enough otherwise, and is much cleaner than diving into LLTextureList, LLViewerFetchedTexture, and LLViewerTexture.
	// Perhaps a proper reload mechanism could be done if we ever add user-level texture reloading, but until then it's not a huge priority.
	// Failing to fully refetch will just give us the same invalid texture we started with, which will result in the fallback texture being used.
	if(mOpaqueWaterImagep != mWaterImagep)
	{
		if(mOpaqueWaterImagep->isMissingAsset())
		{
			mOpaqueWaterImagep = mWaterImagep;
		}
		else if(mOpaqueWaterImagep->hasGLTexture() && mOpaqueWaterImagep->getComponents() < 3)
		{
			LLAppViewer::getTextureCache()->removeFromCache(mOpaqueWaterImagep->getID());
			static bool sRefetch = true;
			if(sRefetch)
			{
				sRefetch = false;
				((LLViewerFetchedTexture*)mOpaqueWaterImagep.get())->forceRefetch();
			}
			else
				mOpaqueWaterImagep = mWaterImagep;
		}
	}
	mOpaqueWaterImagep->addTextureStats(1024.f*1024.f);

	// Activate the texture binding and bind one
	// texture since all images will have the same texture
	gGL.getTexUnit(0)->activate();
	gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
	gGL.getTexUnit(0)->bind(mOpaqueWaterImagep);

	// Automatically generate texture coords for water texture
	if (!shader)
	{
		glEnable(GL_TEXTURE_GEN_S); //texture unit 0
		glEnable(GL_TEXTURE_GEN_T); //texture unit 0
		glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
		glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
	}

	// Use the fact that we know all water faces are the same size
	// to save some computation

	// Slowly move texture coordinates over time so the water appears
	// to be moving.
	F32 movement_period_secs = 50.f;

	static const LLCachedControl<bool> freeze_time("FreezeTime",false);
	static F32 frame_time;
	if (!freeze_time) frame_time = gFrameTimeSeconds;
	F32 offset = fmod(frame_time, movement_period_secs);

	if (movement_period_secs != 0)
	{
		offset /= movement_period_secs;
	}
	else
	{
		offset = 0;
	}

	F32 tp0[4] = { 16.f / 256.f, 0.0f, 0.0f, offset };
	F32 tp1[4] = { 0.0f, 16.f / 256.f, 0.0f, offset };

	if (!shader)
	{
		glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0);
		glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1);
	}
	else
	{
		shader->uniform4fv("object_plane_s", 1, tp0);
		shader->uniform4fv("object_plane_t", 1, tp1);
	}

	gGL.diffuseColor3f(1.f, 1.f, 1.f);

	for (std::vector<LLFace*>::iterator iter = mDrawFace.begin();
		 iter != mDrawFace.end(); iter++)
	{
		LLFace *face = *iter;
		if (voskyp->isReflFace(face))
		{
			continue;
		}

		face->renderIndexed();
	}

	stop_glerror();

	if (!shader)
	{
		// Reset the settings back to expected values
		glDisable(GL_TEXTURE_GEN_S); //texture unit 0
		glDisable(GL_TEXTURE_GEN_T); //texture unit 0
	}

	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
}