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投影更多玩法

master
blobt 4 years ago
parent
a095fdf44a
commit
767ee18e6d
6 changed files with 141 additions and 4 deletions
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  1. BIN
      .vs/shader3/v14/.suo
  2. 75
      main.cpp
  3. 29
      res/shader/projector_shadow.fs
  4. 33
      res/shader/projector_shadow2.fs
  5. 2
      shader3.vcxproj
  6. 6
      shader3.vcxproj.filters

BIN
.vs/shader3/v14/.suo
View File

75
main.cpp
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@ -117,7 +117,7 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
//init projective texture program
GPUProgram projectedTextureProgram;
projectedTextureProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/projector.vs");
projectedTextureProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/projector.fs");
projectedTextureProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/projector_shadow.fs");
projectedTextureProgram.Link();
projectedTextureProgram.DetectAttribute("pos");
@ -131,6 +131,23 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
projectedTextureProgram.DetectUniform("U_ProjectorMatrix");
projectedTextureProgram.DetectUniform("U_ProjectorNoTransScaleMatrix");
//init projective texture program2
GPUProgram projectedTextureProgram2;
projectedTextureProgram2.AttachShader(GL_VERTEX_SHADER, "res/shader/projector.vs");
projectedTextureProgram2.AttachShader(GL_FRAGMENT_SHADER, "res/shader/projector_shadow2.fs");
projectedTextureProgram2.Link();
projectedTextureProgram2.DetectAttribute("pos");
projectedTextureProgram2.DetectAttribute("texcoord");
projectedTextureProgram2.DetectUniform("M");
projectedTextureProgram2.DetectUniform("V");
projectedTextureProgram2.DetectUniform("P");
projectedTextureProgram2.DetectUniform("U_ShadowMap");
projectedTextureProgram2.DetectUniform("U_MainTexture");
projectedTextureProgram2.DetectUniform("U_ProjectiveTexture");
projectedTextureProgram2.DetectUniform("U_ProjectorMatrix");
projectedTextureProgram2.DetectUniform("U_ProjectorNoTransScaleMatrix");
//init 3d model
ObjModel obj, quad, sphere;
@ -148,7 +165,7 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
glm::mat4 model = glm::translate<float>(6.0f, 0.0f, -6.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
glm::mat4 quadModel = glm::translate<float>(6.0f, -1.5f, -6.0f) * glm::rotate(-90.0f, 1.0f, 0.0f, 0.0f) * glm::scale(10.0f, 10.0f, 10.0f);
glm::mat4 quadModel = glm::translate<float>(6.0f, -1.5f, -6.0f) * glm::rotate(-90.0f, 1.0f, 0.0f, 0.0f) * glm::scale(20.0f, 20.0f, 20.0f);
glm::mat4 sphereModel = glm::translate<float>(0.0f, 0.0f, 0.0f) * glm::scale(0.3f, 0.3f, 0.3f);
@ -156,7 +173,7 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
glm::mat4 projectionMatrix = glm::perspective(50.0f, (float)viewportWidth / (float)viewportHeight, 0.1f, 1000.0f);
glm::mat4 projectorViewMatrix = glm::lookAt(glm::vec3(0.0f, 4.0f, 0.0f), glm::vec3(6.0f, -1.0f, -6.0f), glm::vec3(0.0f, 1.0f, 0.0f));
glm::mat4 projectorProjectionMatrix = glm::perspective(50.0f, (float)viewportWidth / (float)viewportHeight, 0.1f, 1000.0f);
glm::mat4 projectorProjectionMatrix = glm::perspective(20.0f, (float)viewportWidth / (float)viewportHeight, 0.1f, 1000.0f);
glm::mat4 projectorMatrix = glm::translate<float>(0.5f, 0.5f, 0.5f)*glm::scale(0.5f, 0.5f, 0.5f) * projectorProjectionMatrix * projectorViewMatrix;
glm::mat4 projectorNoTransScaleMatrix = projectorProjectionMatrix * projectorViewMatrix;
@ -175,6 +192,11 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
projectiveTextureFbo.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
projectiveTextureFbo.Finish();
FBO projectiveTextureFbo2;
projectiveTextureFbo2.AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGBA, viewportWidth, viewportHeight);
projectiveTextureFbo2.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
projectiveTextureFbo2.Finish();
FBO depthFbo;
depthFbo.AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGB, viewportWidth, viewportHeight);
depthFbo.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
@ -199,13 +221,13 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
glUniformMatrix4fv(depthProgram.GetLocation("V"), 1, GL_FALSE, glm::value_ptr(projectorViewMatrix));
obj.Bind(depthProgram.GetLocation("pos"), depthProgram.GetLocation("texcoord"), depthProgram.GetLocation("normal"));
obj.Draw();
glCullFace(GL_BACK);
glUniformMatrix4fv(depthProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(quadModel));
quad.Bind(depthProgram.GetLocation("pos"), depthProgram.GetLocation("texcoord"), depthProgram.GetLocation("normal"));
quad.Draw();
depthFbo.Unbind();
glCullFace(GL_BACK);
/*ԭͼfbo*/
originalFbo.Bind();
@ -227,6 +249,8 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
originalFbo.Unbind();
/*ͶӰfbo*/
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
projectiveTextureFbo.Bind();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(projectedTextureProgram.mProgram);
@ -257,6 +281,43 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
quad.Draw();
projectiveTextureFbo.Unbind();
glDisable(GL_BLEND);
/*ͶӰfbo ´øÒõÓ°*/
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
projectiveTextureFbo2.Bind();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(projectedTextureProgram2.mProgram);
glUniformMatrix4fv(projectedTextureProgram2.GetLocation("P"), 1, GL_FALSE, glm::value_ptr(projectionMatrix));
glUniformMatrix4fv(projectedTextureProgram2.GetLocation("V"), 1, GL_FALSE, glm::value_ptr(viewMatrix));
glUniformMatrix4fv(projectedTextureProgram2.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(model));
glUniformMatrix4fv(projectedTextureProgram2.GetLocation("U_ProjectorMatrix"), 1, GL_FALSE, glm::value_ptr(projectorMatrix));
glUniformMatrix4fv(projectedTextureProgram2.GetLocation("U_ProjectorNoTransScaleMatrix"), 1, GL_FALSE, glm::value_ptr(projectorNoTransScaleMatrix));
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, mainTexture);
glUniform1i(projectedTextureProgram2.GetLocation("U_MainTexture"), 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, projectiveTexture);
glUniform1i(projectedTextureProgram2.GetLocation("U_ProjectiveTexture"), 1);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, depthFbo.GetBuffer("depth"));
glUniform1i(projectedTextureProgram2.GetLocation("U_ShadowMap"), 2);
obj.Bind(projectedTextureProgram2.GetLocation("pos"), projectedTextureProgram2.GetLocation("texcoord"), projectedTextureProgram2.GetLocation("normal"));
obj.Draw();
glUniformMatrix4fv(projectedTextureProgram2.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(quadModel));
quad.Bind(projectedTextureProgram2.GetLocation("pos"), projectedTextureProgram2.GetLocation("texcoord"), projectedTextureProgram2.GetLocation("normal"));
quad.Draw();
projectiveTextureFbo2.Unbind();
glDisable(GL_BLEND);
MSG msg;
while (true)
@ -292,6 +353,12 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
glUniform1i(depthRenderProgram.GetLocation("U_MainTexture"), 0);
fsq.DrawToRightBottom(depthRenderProgram.GetLocation("pos"), depthRenderProgram.GetLocation("texcoord"));
glUseProgram(originalProgram.mProgram);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, projectiveTextureFbo2.GetBuffer("color"));
glUniform1i(originalProgram.GetLocation("U_MainTexture"), 0);
fsq.DrawToLeftBottom(originalProgram.GetLocation("pos"), originalProgram.GetLocation("texcoord"));
glFlush();
SwapBuffers(dc);
}

29
res/shader/projector_shadow.fs
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@ -0,0 +1,29 @@
uniform sampler2D U_ShadowMap;
uniform sampler2D U_ProjectiveTexture;
uniform sampler2D U_MainTexture;
varying vec2 V_Texcoord;
varying vec3 V_WorldPos;
varying vec4 V_ProjectCoord;
varying vec4 V_ProjectorSpaceFragPos;
float CalculateShadow(){
vec3 fragPos = V_ProjectorSpaceFragPos.xyz / V_ProjectorSpaceFragPos.w;
fragPos = fragPos * 0.5 + vec3(0.5);
float depthInShadowMap = texture2D(U_ShadowMap, fragPos.xy).r;
float currentDepth = fragPos.z;
float shadow = (currentDepth - 0.001) > depthInShadowMap ? 1.0 : 0.0;
return shadow;
}
void main()
{
if(V_ProjectCoord.z > 0){
float shadow = CalculateShadow();
gl_FragColor = vec4(texture2D(U_MainTexture, V_Texcoord).rgb, textureProj(U_ProjectiveTexture, V_ProjectCoord).a);
} else {
gl_FragColor = texture2D(U_MainTexture, V_Texcoord);
}
}

33
res/shader/projector_shadow2.fs
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@ -0,0 +1,33 @@
uniform sampler2D U_ShadowMap;
uniform sampler2D U_ProjectiveTexture;
uniform sampler2D U_MainTexture;
varying vec2 V_Texcoord;
varying vec3 V_WorldPos;
varying vec4 V_ProjectCoord;
varying vec4 V_ProjectorSpaceFragPos;
float CalculateShadow(){
vec3 fragPos = V_ProjectorSpaceFragPos.xyz / V_ProjectorSpaceFragPos.w;
fragPos = fragPos * 0.5 + vec3(0.5);
float depthInShadowMap = texture2D(U_ShadowMap, fragPos.xy).r;
float currentDepth = fragPos.z;
float shadow = (currentDepth - 0.001) > depthInShadowMap ? 1.0 : 0.0;
return shadow;
}
void main()
{
if(V_ProjectCoord.z > 0){
vec4 color = textureProj(U_ProjectiveTexture, V_ProjectCoord);
if(color.a == 0.0){
gl_FragColor = texture2D(U_MainTexture, V_Texcoord);
} else {
gl_FragColor = vec4(0.0,0.0,0.0,textureProj(U_ProjectiveTexture, V_ProjectCoord).a);
}
} else {
gl_FragColor = texture2D(U_MainTexture, V_Texcoord);
}
}

2
shader3.vcxproj
View File

@ -85,6 +85,8 @@
<None Include="res\shader\depthrender.fs" />
<None Include="res\shader\projector.fs" />
<None Include="res\shader\projector.vs" />
<None Include="res\shader\projector_shadow.fs" />
<None Include="res\shader\projector_shadow2.fs" />
<None Include="res\shader\sample.fs" />
<None Include="res\shader\sample.vs" />
<None Include="res\shader\sample_depth_buffer.fs" />

6
shader3.vcxproj.filters
View File

@ -67,5 +67,11 @@
<None Include="res\shader\sample_depth_buffer.vs">
<Filter>src</Filter>
</None>
<None Include="res\shader\projector_shadow.fs">
<Filter>src</Filter>
</None>
<None Include="res\shader\projector_shadow2.fs">
<Filter>src</Filter>
</None>
</ItemGroup>
</Project>
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