多次blur

main.cpp

@@ -175,6 +175,10 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 	fbo.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
 	fbo.Finish();
 
+	FBO fbo2;
+	fbo2.AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGBA, viewportWidth, viewportHeight);
+	fbo2.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
+	fbo2.Finish();
 
 	ShowWindow(hwnd, SW_SHOW);
 	UpdateWindow(hwnd);
@@ -192,13 +196,11 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 			TranslateMessage(&msg);
 			DispatchMessage(&msg);
 		}
-
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
 		glEnable(GL_DEPTH_TEST);
-		glUseProgram(gpuProgram.mProgram);
+		
 
 		fbo.Bind();
+		glUseProgram(gpuProgram.mProgram);
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 		glUniform4fv(gpuProgram.GetLocation("U_AmbientLightColor"), 1, ambientLightColor);
 		glUniform4fv(gpuProgram.GetLocation("U_AmbientMaterial"), 1, ambientMaterial);
@@ -215,12 +217,20 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 		glUniformMatrix4fv(gpuProgram.GetLocation("V"), 1, GL_FALSE, glm::value_ptr(viewMatrix));
 		glUniformMatrix4fv(gpuProgram.GetLocation("P"), 1, GL_FALSE, glm::value_ptr(projectionMatrix));
 		glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix));
-
 		obj.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
 		obj.Draw();
+		glUseProgram(0);
 		fbo.Unbind();
 
-		glUseProgram(0);
+		//blur * 2
+		fbo2.Bind();
+		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+		glUseProgram(gaussianProgram.mProgram);
+		glBindTexture(GL_TEXTURE_2D, fbo.GetBuffer("color"));
+		glUniform1i(gaussianProgram.GetLocation("U_MainTexture"), 0);
+		fsq.Draw(gaussianProgram.GetLocation("pos"), gaussianProgram.GetLocation("texcoord"));
+		fbo2.Unbind();
+
 		glFlush();
 
 		glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
@@ -242,6 +252,8 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
 		fsq.DrawToLeftBottom(dilationProgram.GetLocation("pos"), dilationProgram.GetLocation("texcoord"));
 
 		glUseProgram(gaussianProgram.mProgram);
+		glBindTexture(GL_TEXTURE_2D, fbo2.GetBuffer("color"));
+		glUniform1i(originalProgram.GetLocation("U_MainTexture"), 0);
 		fsq.DrawToRightBottom(gaussianProgram.GetLocation("pos"), gaussianProgram.GetLocation("texcoord"));
 
 		SwapBuffers(dc);