tmp

main.cpp

@@ -91,9 +91,9 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 	glewInit();
 
 	/*创建program*/
-	GLuint program = CreateGPUProgram("res/shader/ViewDepthMap.vs", "res/shader/ViewDepthMap.fs");
+	GLuint program = CreateGPUProgram("res/shader/UI FullScreemQuad.vs", "res/shader/SimpleTexture.fs");
 
-	GLuint posLocation, texcoordLocation, normalLocation, MLocation, VLocation, PLocation;
+	GLuint posLocation, texcoordLocation, normalLocation, MLocation, VLocation, PLocation, textureLocation;
 	posLocation = glGetAttribLocation(program, "pos");
 	texcoordLocation = glGetAttribLocation(program, "texcoord");
 	normalLocation = glGetAttribLocation(program, "normal");
@@ -101,13 +101,14 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 	MLocation = glGetUniformLocation(program, "M");
 	VLocation = glGetUniformLocation(program, "V");
 	PLocation = glGetUniformLocation(program, "P");
+	textureLocation = glGetUniformLocation(program, "U_MainTexture");
 
 	/*load model*/
 	unsigned int *indexes = nullptr;
 	int vertexCount = 0, indexCount = 0;
 	Timer t;
 	t.Start();
-	VertexData* vertexes = LoadObjModel("res/model/niutou.obj", &indexes, vertexCount, indexCount);
+	VertexData* vertexes = LoadObjModel("res/model/Quad.obj", &indexes, vertexCount, indexCount);
 	printf("load model cost %fs %d\n", t.GetPassedTime(), t.GetPassedTickers());
 
 	if (vertexes == nullptr) {
@@ -119,9 +120,9 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 	glBindBuffer(GL_ARRAY_BUFFER, vbo);
 	glEnableVertexAttribArray(posLocation);
 	glVertexAttribPointer(posLocation, 3, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)0);
-	/*glEnableVertexAttribArray(texcoordLocation);
+	glEnableVertexAttribArray(texcoordLocation);
 	glVertexAttribPointer(texcoordLocation, 2, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)(sizeof(float) * 3));
-	glEnableVertexAttribArray(normalLocation);
+	/*glEnableVertexAttribArray(normalLocation);
 	glVertexAttribPointer(normalLocation, 3, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)(sizeof(float) * 5));*/
 	glBindBuffer(GL_ARRAY_BUFFER, 0);
 
@@ -131,6 +132,9 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 	/*创建纹理*/
 	GLuint mainTexture = CreateTextureFromFile("res/image/niutou.bmp");
 
+	GLuint colorBuffer, depthBuffer;
+	GLuint fbo = CreateFramebufferObject(colorBuffer, depthBuffer, windowWidth, windowHeight);
+
 	glViewport(0, 0, windowWidth, windowHeight);
 
 	GL_CALL(glClearColor(0.1f, 0.4f, 0.7f, 1.0f));
@@ -164,11 +168,13 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 		glUniformMatrix4fv(VLocation, 1, GL_FALSE, identify);
 		glUniformMatrix4fv(PLocation, 1, GL_FALSE, glm::value_ptr(projection));
 
+		glBindTexture(GL_TEXTURE_2D, mainTexture);
+		glUniform1i(textureLocation, 0);
+
 		glUniformMatrix4fv(MLocation, 1, GL_FALSE, glm::value_ptr(model));
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
 		glDrawElements(GL_TRIANGLES, indexCount, GL_UNSIGNED_INT, 0);
 
-		glBindVertexArray(0);
 		glUseProgram(0);
 	};
 
@@ -187,11 +193,23 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 			DispatchMessage(&msg);
 		}
 
-		//绘制内容到fbo
-		GL_CALL(glClearColor(0.1f, 0.4f, 0.7f, 1.0f));
+		glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 		what();
+		glBindFramebuffer(GL_FRAMEBUFFER, 0);
+		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+		glEnable(GL_TEXTURE_2D);
+		glBindTexture(GL_TEXTURE_2D, colorBuffer);
+
+		glBegin(GL_QUADS);
+		glTexCoord2f(0.0f, 0.0f); glVertex3f(-0.5f, -0.5f, -2.0f);
+		glTexCoord2f(1.0f, 0.0f); glVertex3f(0.5f, -0.5f, -2.0f);
+		glTexCoord2f(1.0f, 1.0f); glVertex3f(0.5f, 0.5f, -2.0f);
+		glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.5f, 0.5f, -2.0f);
+		glEnd();
 
+		glFlush();
 		SwapBuffers(dc);
 	}
 

res/shader/SimpleTexture.fs

@@ -0,0 +1,8 @@
+uniform sampler2D U_MainTexture;
+
+varying vec2 V_Texcoord;
+
+void main() {
+
+	gl_FragColor = texture2D(U_MainTexture, V_Texcoord);
+}

res/shader/SimpleTexture.vs

@@ -0,0 +1,14 @@
+attribute vec3 pos;
+attribute vec2 texcoord;
+attribute vec3 normal;
+
+uniform mat4 M;
+uniform mat4 V;
+uniform mat4 P;
+
+varying vec2 V_Texcoord;
+
+void main() {
+	V_Texcoord = texcoord;
+	gl_Position = P*V*M*vec4(pos, 1.0);	
+}

res/shader/UI FullScreemQuad.vs

@@ -5,7 +5,6 @@ attribute vec3 normal;
 uniform mat4 M;
 uniform mat4 V;
 uniform mat4 P;
-uniform mat4 NM;
 
 varying vec2 V_Texcoord;
 

shader2.vcxproj

@@ -159,8 +159,9 @@
     <ClInclude Include="timer.h" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="res\shader\ViewDepthMap.fs" />
-    <None Include="res\shader\ViewDepthMap.vs" />
+    <None Include="res\shader\SimpleTexture.fs" />
+    <None Include="res\shader\SimpleTexture.vs" />
+    <None Include="res\shader\UI FullScreemQuad.vs" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

shader2.vcxproj.filters

@@ -46,10 +46,13 @@
     </ClInclude>
   </ItemGroup>
   <ItemGroup>
-    <None Include="res\shader\ViewDepthMap.fs">
+    <None Include="res\shader\SimpleTexture.fs">
       <Filter>源文件</Filter>
     </None>
-    <None Include="res\shader\ViewDepthMap.vs">
+    <None Include="res\shader\SimpleTexture.vs">
+      <Filter>源文件</Filter>
+    </None>
+    <None Include="res\shader\UI FullScreemQuad.vs">
       <Filter>源文件</Filter>
     </None>
   </ItemGroup>