Working with parallax test

assets/parallax_fragment.txt

@@ -0,0 +1,68 @@
+precision mediump float;
+uniform sampler2D Texture;
+uniform sampler2D NormalMap;
+uniform sampler2D HeightMap;
+
+precision highp float;
+
+varying vec2 frag_uv;
+varying vec3 ts_light_pos;
+varying vec3 ts_view_pos;
+varying vec3 ts_frag_pos;
+
+const float num_layers = 16.0;
+
+const float depth_scale = 0.01;
+
+
+
+vec2 parallax_uv(vec2 uv, vec3 view_dir)
+{
+ 
+        float layer_depth = 1.0 / num_layers;
+        float cur_layer_depth = 0.0;
+        vec2 delta_uv = view_dir.xy * depth_scale / (view_dir.z * num_layers);
+        vec2 cur_uv = uv;
+
+        float depth_from_tex = texture2D(HeightMap, cur_uv).r;
+
+        for (int i = 0; i < 32; i++) {
+            cur_layer_depth += layer_depth;
+            cur_uv -= delta_uv;
+            depth_from_tex = texture2D(HeightMap, cur_uv).r;
+            if (depth_from_tex < cur_layer_depth) {
+                break;
+            }
+        }
+
+
+            // Parallax occlusion mapping
+            vec2 prev_uv = cur_uv + delta_uv;
+            float next = depth_from_tex - cur_layer_depth;
+            float prev = texture2D(HeightMap, prev_uv).r - cur_layer_depth
+                         + layer_depth;
+            float weight = next / (next - prev);
+            return mix(cur_uv, prev_uv, weight);
+        
+    
+}
+
+void main(void)
+{
+    vec3 light_dir = normalize(ts_light_pos - ts_frag_pos);
+    vec3 view_dir = normalize(ts_view_pos - ts_frag_pos);
+
+    // Only perturb the texture coordinates if a parallax technique is selected
+    vec2 uv = parallax_uv(frag_uv, view_dir);
+	//vec2 uv = frag_uv;
+
+    vec3 albedo = texture2D(Texture, uv).rgb;
+
+    vec3 ambient = 0.3 * albedo;
+
+    // Normal mapping
+    vec3 norm = normalize(texture2D(NormalMap, uv).rgb * 2.0 - 1.0);
+    float diffuse = max(dot(light_dir, norm), 0.0);
+    gl_FragColor = vec4(diffuse * albedo + ambient, 1.0);
+    
+}

assets/parallax_vertex.txt

@@ -0,0 +1,60 @@
+attribute vec3 vPosition;
+attribute vec2 vTexCoord;
+
+uniform	vec3 eye;
+
+uniform mat4 ModelViewMatrix;
+uniform mat3 NormalMatrix;
+uniform mat4 ProjectionMatrix1;
+uniform mat3 ModelViewMatrix3x3;
+
+varying vec2 frag_uv;
+varying vec3 ts_light_pos; // Tangent space values
+varying vec3 ts_view_pos;  //
+varying vec3 ts_frag_pos;  //
+
+
+mat3 transpose(in mat3 inMatrix)
+{
+    vec3 i0 = inMatrix[0];
+    vec3 i1 = inMatrix[1];
+    vec3 i2 = inMatrix[2];
+
+    mat3 outMatrix = mat3(
+        vec3(i0.x, i1.x, i2.x),
+        vec3(i0.y, i1.y, i2.y),
+        vec3(i0.z, i1.z, i2.z)
+    );
+
+    return outMatrix;
+}
+
+
+void main() 
+{
+	vec3 vert_norm = vec3(0, 1, 0);
+	vec3 vert_tang = vec3(1, 0, 0);
+	vec3 vert_bitang = vec3(0, 0, 1);
+	
+	mat4 mvp = ProjectionMatrix1 * ModelViewMatrix;
+	
+	gl_Position = mvp * vec4(vPosition.xyz, 1.0);
+	
+	ts_frag_pos = vec3(ModelViewMatrix * vec4(vPosition.xyz, 1.0));
+	
+	vec3 t = normalize((NormalMatrix) * vert_tang);
+    vec3 b = normalize((NormalMatrix) * vert_bitang);
+    vec3 n = normalize((NormalMatrix) * vert_norm);
+    mat3 tbn = transpose(mat3(t, b, n));
+	
+	
+    ts_light_pos = tbn * vec3(1,2,0);
+
+    //ts_view_pos = tbn * eye;
+	ts_view_pos = tbn * vec3(0,0,0);
+    ts_frag_pos = tbn * ts_frag_pos;
+
+	
+	frag_uv = vTexCoord;
+	
+}

game/main_code.cpp

@@ -12,6 +12,41 @@
 TMyApplication* Application;
 
 
+
+Matrix3f quatToMatrix(Vector4f q) {
+
+	Matrix3f result;
+
+	double sqw = q(3)*q(3);
+	double sqx = q(0)*q(0);
+	double sqy = q(1)*q(1);
+	double sqz = q(2)*q(2);
+
+	// invs (inverse square length) is only required if quaternion is not already normalised
+	double invs = 1 / (sqx + sqy + sqz + sqw);
+
+	result(0,0) = (sqx - sqy - sqz + sqw)*invs; // since sqw + sqx + sqy + sqz =1/invs*invs
+	result(1,1) = (-sqx + sqy - sqz + sqw)*invs;
+	result(2,2) = (-sqx - sqy + sqz + sqw)*invs;
+
+	double tmp1 = q(0)*q(1);
+	double tmp2 = q(2)*q(3);
+	result(1, 0) = 2.0 * (tmp1 + tmp2)*invs;
+	result(0, 1) = 2.0 * (tmp1 - tmp2)*invs;
+
+	tmp1 = q(0)*q(2);
+	tmp2 = q(1)*q(3);
+	result(2,0) = 2.0 * (tmp1 - tmp2)*invs;
+	result(0,2) = 2.0 * (tmp1 + tmp2)*invs;
+	tmp1 = q(1)*q(2);
+	tmp2 = q(0)*q(3);
+	result(2, 1) = 2.0 * (tmp1 + tmp2)*invs;
+	result(1, 2) = 2.0 * (tmp1 - tmp2)*invs;
+
+	return result;
+}
+
+
 void TMyApplication::InnerInit()
 {
 
@@ -39,18 +74,42 @@ void TMyApplication::InnerInit()
 	ResourceManager->ShaderManager.AddShader("FrameShader", "frameshader_vertex.txt", "frameshader_fragment.txt");
 	ResourceManager->ShaderManager.AddShader("ColorShader", "color_vertex.txt", "color_fragment.txt");
 	ResourceManager->ShaderManager.AddShader("SSAA_4X", "SSAA_4X.vertex", "SSAA_4X.frag");
+	ResourceManager->ShaderManager.AddShader("ParallaxShader", "parallax_vertex.txt", "parallax_fragment.txt");
 	Renderer->PushShader("DefaultShader");
 
 	ResourceManager->TexList.AddTexture("console_bkg.bmp");
+	ResourceManager->TexList.AddTexture("owl-green.jpg");
+	ResourceManager->TexList.AddTexture("owl-green-height.png");
+	ResourceManager->TexList.AddTexture("owl-green-normal.png");
+
+	ResourceManager->TexList.AddTexture("5f.jpg");
+	ResourceManager->TexList.AddTexture("6f.jpg");
+	ResourceManager->TexList.AddTexture("7f.jpg");
 
 	ResourceManager->FrameManager.AddFrameRenderBuffer("LevelBuffer", 512, 512);
 
-	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(0, 0, 0));
-	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(0, 512, 0));
+	/*
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(-511, -512, 0));
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(-512, 512, 0));
 	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(512, 512, 0));
-	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(0, 0, 0));
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(-512, -512, 0));
 	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(512, 512, 0));
-	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(512, 0, 0));
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(512, -512, 0));
+	*/
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(-511, 0, -512));
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(-512, 0, 512));
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(512, 0, 512));
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(-512, 0, -512));
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(512, 0, 512));
+	pair.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(512, 0, -512));
+
+	pair.second.Data.Vec2CoordArr[CONST_STRING_TEXCOORD_ATTRIB].push_back(Vector2f(0, 0));
+	pair.second.Data.Vec2CoordArr[CONST_STRING_TEXCOORD_ATTRIB].push_back(Vector2f(0, 1));
+	pair.second.Data.Vec2CoordArr[CONST_STRING_TEXCOORD_ATTRIB].push_back(Vector2f(1,1));
+	pair.second.Data.Vec2CoordArr[CONST_STRING_TEXCOORD_ATTRIB].push_back(Vector2f(0, 0));
+	pair.second.Data.Vec2CoordArr[CONST_STRING_TEXCOORD_ATTRIB].push_back(Vector2f(1,1));
+	pair.second.Data.Vec2CoordArr[CONST_STRING_TEXCOORD_ATTRIB].push_back(Vector2f(1, 0));
+
 
 
 	pair.second.Data.Vec4CoordArr[CONST_STRING_COLOR_ATTRIB].push_back(Vector4f(1, 0, 0, 1));
@@ -60,13 +119,20 @@ void TMyApplication::InnerInit()
 	pair.second.Data.Vec4CoordArr[CONST_STRING_COLOR_ATTRIB].push_back(Vector4f(0, 0, 1, 1));
 	pair.second.Data.Vec4CoordArr[CONST_STRING_COLOR_ATTRIB].push_back(Vector4f(0, 1, 0, 1));
 
-	pair.first.ShaderName = "ColorShader";
+	pair.first.ShaderName = "ParallaxShader";
+	
+	pair.first.SamplerMap[CONST_STRING_TEXTURE_UNIFORM] = "owl-green.jpg";
+	pair.first.SamplerMap["HeightMap"] = "owl-green-height.png";
+	pair.first.SamplerMap["NormalMap"] = "owl-green-normal.png";
+	//pair.first.SamplerMap[CONST_STRING_TEXTURE_UNIFORM] = "6f.jpg";
+	//pair.first.SamplerMap["HeightMap"] = "5f.jpg";
+	//pair.first.SamplerMap["NormalMap"] = "7f.jpg";
 
 	pair.second.RefreshBuffer();
 
 
 
-
+	/*
 	rect.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(0, 0, 0));
 	rect.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(0, 512, 0));
 	rect.second.Data.Vec3CoordArr[CONST_STRING_POSITION_ATTRIB].push_back(Vector3f(512, 512, 0));
@@ -82,11 +148,9 @@ void TMyApplication::InnerInit()
 	rect.second.Data.Vec2CoordArr[CONST_STRING_TEXCOORD_ATTRIB].push_back(Vector2f(0, 0));
 
 
-	rect.second.RefreshBuffer();
+	rect.second.RefreshBuffer();*/
 
-	Renderer->SetOrthoProjection();
 
-	Renderer->SetFullScreenViewport();
 
 	Inited = true;
 
@@ -122,73 +186,94 @@ void TMyApplication::InnerOnTapUpAfterMove(Vector2f p)
 
 void TMyApplication::InnerOnMove(Vector2f p, Vector2f shift)
 {
+	phi += shift(1)*0.02f;
 
+	if (phi < pi/12)
+	{
+		phi = pi / 12;
+	}
+
+	if (phi > pi / 2)
+	{
+		phi = pi / 2;
+	}
+
+	alpha -= shift(0)*0.02f;
 }
 	
 void TMyApplication::OnFling(Vector2f v) 
 {
 }
 
+void TMyApplication::OnMouseWheel(short int delta)
+{
+	distance += delta;
+
+	if (distance > 2500)
+	{
+		distance = 2500;
+	}
+
+	if (distance < 100)
+	{
+		distance = 100;
+	}
+}
 	
 void TMyApplication::InnerDraw()
 {
 
-	Renderer->SwitchToFrameBuffer("LevelBuffer");
-	Renderer->SetProjectionMatrix(512.f, 512.f);
-	glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
+	Renderer->SetPerspectiveProjection(pi / 6, 10.f, 10000.f);
+
+	Renderer->SetFullScreenViewport();
+
+	Renderer->PushMatrix();
+
+	Renderer->TranslateMatrix(Vector3f(0, 0, -distance));
+
+	Vector4f quat1 = Vector4f(sin(phi / 2), 0, 0, cos(phi / 2));
+	Vector4f quat2 = Vector4f(0, sin(alpha / 2), 0, cos(alpha / 2));
+
+
+	Renderer->RotateMatrix(quat1);
+
+	Renderer->RotateMatrix(quat2);
+
+
+
+	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 	glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
 	CheckGlError("");
 
+	auto mat1 = quatToMatrix(quat1);
+
+	auto mat2 = quatToMatrix(quat2);
+
+	Vector3f lightPos = {0.f, 1.f, 1.f};
+
+	Vector3f eye = mat2 * (mat1 * Vector3f(0.0f, 0.f, -distance));
+
 
 	{
 		TRenderParamsSetter params(pair.first);
+
+		RenderUniform3fv("eye", eye.data());
+		RenderUniform3fv("lightPos", lightPos.data());
+
+		Matrix3f normMatrix = Renderer->GetModelviewMatrix().inverse().transpose().block<3,3>(0,0);
+		
+		RenderUniformMatrix3fv("NormalMatrix", false, normMatrix.data());
+		RenderUniformMatrix4fv("ModelViewMatrix", false, Renderer->GetModelviewMatrix().data());
+		RenderUniformMatrix3fv("ModelViewMatrix3x3", false, Renderer->GetModelviewMatrix().block<3,3>(0,0).data());
+
 		Renderer->DrawTriangleList(pair.second);
 	}
 
-	CheckGlError("");
-
-
-	Renderer->SwitchToScreen();
-	Renderer->SetFullScreenViewport();
-
-
-	const float cos30 = sqrt(3) / 2;
-	const float sin30 = 0.5f;
-	const float sampleRadiusX = 0.75 / 512;
-	const float sampleRadiusY = 0.75 / 512;
-
-	Matrix2f rotate30Matrix;
-	rotate30Matrix(0, 0) = cos30;
-	rotate30Matrix(0, 1) = sin30;
-	rotate30Matrix(1, 0) = -sin30;
-	rotate30Matrix(1, 1) = cos30;
-
-
-	Renderer->PushShader("SSAA_4X");
-
-
-	std::array<Vector2f, 4> sampleVector = {
-		Vector2f(sampleRadiusX, sampleRadiusY),
-		Vector2f(-sampleRadiusX, sampleRadiusY),
-		Vector2f(-sampleRadiusX, -sampleRadiusY),
-		Vector2f(sampleRadiusX, -sampleRadiusY)
-	};
-
-	for (size_t i = 0; i < 4; i++)
-	{
-		sampleVector[i] = rotate30Matrix * sampleVector[i];
-
-		RenderUniform2fv("samplesOffset[" + boost::lexical_cast<std::string>(i) + "]", &sampleVector[i][0]);
-	}
-	
-	
-	glBindTexture(GL_TEXTURE_2D, ResourceManager->FrameManager.GetFrameTexture("LevelBuffer"));
-	Renderer->DrawTriangleList(rect.second);
-
-	Renderer->PopShader();
+	Renderer->PopMatrix();
 
 	CheckGlError("");
 	
+
 }
 
 

game/main_code.h

@@ -63,6 +63,14 @@ public:
 
 	virtual void OnFling(Vector2f v);
 
+	virtual void OnMouseWheel(short int delta);
+
+
+	float distance = 2000;
+
+	float alpha = 0;
+
+	float phi = pi / 6;
 };
 
 

windows/DoubleHitBalls-win/DoubleHitBalls-win/DoubleHitBalls-win.vcxproj.filters

@@ -1,33 +0,0 @@
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-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup>
-    <Filter Include="Файлы исходного кода">
-      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
-      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
-    </Filter>
-    <Filter Include="Заголовочные файлы">
-      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
-    </Filter>
-    <Filter Include="Файлы ресурсов">
-      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
-      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
-    </Filter>
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="main.cpp">
-      <Filter>Файлы исходного кода</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\..\game\main_code.cpp">
-      <Filter>Файлы исходного кода</Filter>
-    </ClCompile>
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="main.h">
-      <Filter>Заголовочные файлы</Filter>
-    </ClInclude>
-    <ClInclude Include="..\..\..\game\main_code.h">
-      <Filter>Заголовочные файлы</Filter>
-    </ClInclude>
-  </ItemGroup>
-</Project>