SL-17281 environment map prototype (stupid slow and hacky, but provides a way to get a "real" environment map for shader development)

1 files changed, 33 insertions, 185 deletions

diff --git a/indra/llrender/llcubemap.cpp b/indra/llrender/llcubemap.cpp
index 834084674e..40d15280d3 100644
--- a/indra/llrender/llcubemap.cpp
+++ b/indra/llrender/llcubemap.cpp
@@ -166,6 +166,39 @@ void LLCubeMap::init(const std::vector<LLPointer<LLImageRaw> >& rawimages)
 	}
 }
 
+void LLCubeMap::initEnvironmentMap(const std::vector<LLPointer<LLImageRaw> >& rawimages)
+{
+    llassert(rawimages.size() == 6);
+
+    U32 texname = 0;
+
+    LLImageGL::generateTextures(1, &texname);
+
+    U32 resolution = rawimages[0]->getWidth();
+    U32 components = rawimages[0]->getComponents();
+
+    for (int i = 0; i < 6; i++)
+    {
+        llassert(rawimages[i]->getWidth() == resolution);
+        llassert(rawimages[i]->getHeight() == resolution);
+        llassert(rawimages[i]->getComponents() == components);
+
+
+        mImages[i] = new LLImageGL(resolution, resolution, components, FALSE);
+        mImages[i]->setTarget(mTargets[i], LLTexUnit::TT_CUBE_MAP);
+        mRawImages[i] = rawimages[i];
+        mImages[i]->createGLTexture(0, mRawImages[i], texname);
+
+        gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_CUBE_MAP, texname);
+        mImages[i]->setAddressMode(LLTexUnit::TAM_CLAMP);
+        stop_glerror();
+
+        mImages[i]->setSubImage(mRawImages[i], 0, 0, resolution, resolution);
+    }
+    gGL.getTexUnit(0)->disable();
+    disable();
+}
+
 GLuint LLCubeMap::getGLName()
 {
 	return mImages[0]->getTexName();
@@ -256,191 +289,6 @@ void LLCubeMap::restoreMatrix()
 	}*/
 }
 
-void LLCubeMap::setReflection (void)
-{
-	gGL.getTexUnit(mTextureStage)->bindManual(LLTexUnit::TT_CUBE_MAP, getGLName());
-	mImages[0]->setFilteringOption(LLTexUnit::TFO_ANISOTROPIC);
-	mImages[0]->setAddressMode(LLTexUnit::TAM_CLAMP);
-}
-
-LLVector3 LLCubeMap::map(U8 side, U16 v_val, U16 h_val) const
-{
-	LLVector3 dir;
-
-	const U8 curr_coef = side >> 1; // 0/1 = X axis, 2/3 = Y, 4/5 = Z
-	const S8 side_dir = (((side & 1) << 1) - 1);  // even = -1, odd = 1
-	const U8 i_coef = (curr_coef + 1) % 3;
-	const U8 j_coef = (i_coef + 1) % 3;
-
-	dir.mV[curr_coef] = side_dir;
-
-	switch (side)
-	{
-	case 0: // negative X
-		dir.mV[i_coef] = -F32((v_val<<1) + 1) / RESOLUTION + 1;
-		dir.mV[j_coef] = F32((h_val<<1) + 1) / RESOLUTION - 1;
-		break;
-	case 1: // positive X
-		dir.mV[i_coef] = -F32((v_val<<1) + 1) / RESOLUTION + 1;
-		dir.mV[j_coef] = -F32((h_val<<1) + 1) / RESOLUTION + 1;
-		break;
-	case 2:	// negative Y
-		dir.mV[i_coef] = -F32((v_val<<1) + 1) / RESOLUTION + 1;
-		dir.mV[j_coef] = F32((h_val<<1) + 1) / RESOLUTION - 1;
-		break;
-	case 3:	// positive Y
-		dir.mV[i_coef] = F32((v_val<<1) + 1) / RESOLUTION - 1;
-		dir.mV[j_coef] = F32((h_val<<1) + 1) / RESOLUTION - 1;
-		break;
-	case 4:	// negative Z
-		dir.mV[i_coef] = -F32((h_val<<1) + 1) / RESOLUTION + 1;
-		dir.mV[j_coef] = -F32((v_val<<1) + 1) / RESOLUTION + 1;
-		break;
-	case 5: // positive Z
-		dir.mV[i_coef] = -F32((h_val<<1) + 1) / RESOLUTION + 1;
-		dir.mV[j_coef] = F32((v_val<<1) + 1) / RESOLUTION - 1;
-		break;
-	default:
-		dir.mV[i_coef] = F32((v_val<<1) + 1) / RESOLUTION - 1;
-		dir.mV[j_coef] = F32((h_val<<1) + 1) / RESOLUTION - 1;
-	}
-
-	dir.normVec();
-	return dir;
-}
-
-
-BOOL LLCubeMap::project(F32& v_val, F32& h_val, BOOL& outside,
-						U8 side, const LLVector3& dir) const
-{
-	const U8 curr_coef = side >> 1; // 0/1 = X axis, 2/3 = Y, 4/5 = Z
-	const S8 side_dir = (((side & 1) << 1) - 1);  // even = -1, odd = 1
-	const U8 i_coef = (curr_coef + 1) % 3;
-	const U8 j_coef = (i_coef + 1) % 3;
-
-	outside = TRUE;
-	if (side_dir * dir.mV[curr_coef] < 0)
-		return FALSE;
-
-	LLVector3 ray;
-
-	F32 norm_val = fabs(dir.mV[curr_coef]);
-
-	if (norm_val < epsilon)
-		norm_val = 1e-5f;
-
-	ray.mV[curr_coef] = side_dir;
-	ray.mV[i_coef] = dir.mV[i_coef] / norm_val;
-	ray.mV[j_coef] = dir.mV[j_coef] / norm_val;
-
-
-	const F32 i_val = (ray.mV[i_coef] + 1) * 0.5f * RESOLUTION;
-	const F32 j_val = (ray.mV[j_coef] + 1) * 0.5f * RESOLUTION;
-
-	switch (side)
-	{
-	case 0: // negative X
-		v_val = RESOLUTION - i_val;
-		h_val = j_val;
-		break;
-	case 1: // positive X
-		v_val = RESOLUTION - i_val;
-		h_val = RESOLUTION - j_val;
-		break;
-	case 2:	// negative Y
-		v_val = RESOLUTION - i_val;
-		h_val = j_val;
-		break;
-	case 3:	// positive Y
-		v_val = i_val;
-		h_val = j_val;
-		break;
-	case 4:	// negative Z
-		v_val = RESOLUTION - j_val;
-		h_val = RESOLUTION - i_val;
-		break;
-	case 5: // positive Z
-		v_val = RESOLUTION - j_val;
-		h_val = i_val;
-		break;
-	default:
-		v_val = i_val;
-		h_val = j_val;
-	}
-
-	outside =  ((v_val < 0) || (v_val > RESOLUTION) ||
-		(h_val < 0) || (h_val > RESOLUTION));
-
-	return TRUE;
-}
-
-BOOL LLCubeMap::project(F32& v_min, F32& v_max, F32& h_min, F32& h_max, 
-						U8 side, LLVector3 dir[4]) const
-{
-	v_min = h_min = RESOLUTION;
-	v_max = h_max = 0;
-
-	BOOL fully_outside = TRUE;
-	for (U8 vtx = 0; vtx < 4; ++vtx)
-	{
-		F32 v_val, h_val;
-		BOOL outside;
-		BOOL consider = project(v_val, h_val, outside, side, dir[vtx]);
-		if (!outside)
-			fully_outside = FALSE;
-		if (consider)
-		{
-			if (v_val < v_min) v_min = v_val;
-			if (v_val > v_max) v_max = v_val;
-			if (h_val < h_min) h_min = h_val;
-			if (h_val > h_max) h_max = h_val;
-		}
-	}
-
-	v_min = llmax(0.0f, v_min);
-	v_max = llmin(RESOLUTION - epsilon, v_max);
-	h_min = llmax(0.0f, h_min);
-	h_max = llmin(RESOLUTION - epsilon, h_max);
-
-	return !fully_outside;
-}
-
-
-void LLCubeMap::paintIn(LLVector3 dir[4], const LLColor4U& col)
-{
-    LL_PROFILE_ZONE_SCOPED;
-	F32 v_min, v_max, h_min, h_max;
-	LLVector3 center = dir[0] + dir[1] + dir[2] + dir[3];
-	center.normVec();
-
-	for (U8 side = 0; side < 6; ++side)
-	{
-		if (!project(v_min, v_max, h_min, h_max, side, dir))
-			continue;
-
-		U8 *td = mRawImages[side]->getData();
-		
-		U16 v_minu = (U16) v_min;
-		U16 v_maxu = (U16) (ceil(v_max) + 0.5);
-		U16 h_minu = (U16) h_min;
-		U16 h_maxu = (U16) (ceil(h_max) + 0.5);
-
-		for (U16 v = v_minu; v < v_maxu; ++v)
-			for (U16 h = h_minu; h < h_maxu; ++h)
-		//for (U16 v = 0; v < RESOLUTION; ++v)
-		//	for (U16 h = 0; h < RESOLUTION; ++h)
-			{
-				const LLVector3 ray = map(side, v, h);
-				if (ray * center > 0.999)
-				{
-					const U32 offset = (RESOLUTION * v + h) * 4;
-					for (U8 cc = 0; cc < 3; ++cc)
-						td[offset + cc] = U8((td[offset + cc] + col.mV[cc]) * 0.5);
-				}
-			}
-		mImages[side]->setSubImage(mRawImages[side], 0, 0, RESOLUTION, RESOLUTION);
-	}
-}
 
 void LLCubeMap::destroyGL()
 {