GRAPHICS: Implement shader-based rendering of NWN new game fog

src/engines/nwn/gui/main/newgamefog.cpp

@@ -24,6 +24,8 @@
 
 #include <cstdlib>
 
+#include "glm/gtc/matrix_transform.hpp"
+
 #include "src/common/scopedptr.h"
 #include "src/common/maths.h"
 #include "src/common/readstream.h"
@@ -104,6 +106,44 @@ class NewGameFog : public Graphics::Aurora::Model_NWN {
 		_lastTime = curTime;
 	}
 
+	void renderImmediate(const glm::mat4 &parentTransform) {
+		uint32 curTime = EventMan.getTimestamp();
+
+		uint32 diffRotate = curTime - _timeRotate;
+		glm::mat4 transform = glm::mat4();
+		transform = glm::rotate(transform, Common::deg2rad(diffRotate / _rotateSpeed), glm::vec3(0.0f, 0.0f, -1.0f));
+		transform = glm::scale(transform, glm::vec3(_curZoom * 10.0f, _curZoom * 10.0f, 1.0f));
+
+		transform = glm::translate(transform, glm::vec3(_position[0], _position[1], _position[2]));
+		if (_orientation[0] != 0.0f ||
+		    _orientation[1] != 0.0f ||
+		    _orientation[2] != 0.0f) {
+			transform = glm::rotate(transform, _orientation[3], glm::vec3(_orientation[0], _orientation[1], _orientation[2]));
+		}
+		transform = glm::scale(transform, glm::vec3(_scale[0], _scale[1], _scale[2]));
+		_curZoom += ((curTime - _lastTime) / 3000.0f) * _curZoom;
+
+		if (_curFade >= 1.0f)
+			_fadeStep = -0.0005f - (std::rand() % 100) / 100000.0f;
+		if (_curFade <= 0.0f)
+			_fadeStep =  0.0005f + (std::rand() % 100) / 100000.0f;
+
+		_curFade += (curTime - _lastTime) * _fadeStep;
+		if (_curFade < 0.0f)
+			_curZoom = 0.8f;
+
+		for (NodeList::iterator n = _currentState->rootNodes.begin();
+			 n != _currentState->rootNodes.end(); ++n) {
+			(*n)->setAlpha(_curFade);
+		}
+
+		Graphics::Aurora::Model_NWN::renderImmediate(parentTransform);
+		_absolutePosition = transform;
+
+		glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+
+		_lastTime = curTime;
+	}
 };
 
 

src/engines/nwn/gui/main/newgamefog.h

@@ -32,6 +32,8 @@
 
 #include "src/graphics/aurora/types.h"
 
+#include "src/graphics/shader/shadermaterial.h"
+
 namespace Engines {
 
 namespace NWN {
@@ -46,6 +48,7 @@ class NewGameFogs {
 
 private:
 	Common::PtrVector<Graphics::Aurora::Model> _fogs;
+	Graphics::Shader::ShaderMaterial *_fogMaterial;
 };
 
 } // End of namespace NWN