Merge pull request #101 from Bottinator22/main

Post-processing layer support for mods

assets/opensb/client.config.patch

@@ -9,5 +9,6 @@
   "deployCinematicBase" : {
     "scissor" : false,
     "letterbox" : false
-  }
+  },
+  "postProcessLayers": []
 }

assets/opensb/rendering/effects/basic.vert

@@ -0,0 +1,7 @@
+#version 140
+
+in vec2 vertexPosition;
+
+void main() {
+  gl_Position = vec4(vertexPosition, 0.0, 1.0);
+}

source/application/StarRenderer_opengl.cpp

@@ -153,12 +153,32 @@ OpenGlRenderer::GlFrameBuffer::GlFrameBuffer(Json const& fbConfig) : config(fbCo
   GLenum target = multisample ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D;
   glBindTexture(target, texture->glTextureId());
 
-  Vec2U size = jsonToVec2U(config.getArray("size", { 256, 256 }));
+  sizeDiv = config.getUInt("sizeDiv",1);
+  Vec2U size = jsonToVec2U(config.getArray("size", { 256, 256 }))/sizeDiv;
 
   if (multisample)
     glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, multisample, GL_RGBA8, size[0], size[1], GL_TRUE);
-  else
+  else {
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, size[0], size[1], 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+  }
+  auto addressing = TextureAddressingNames.getLeft(config.getString("textureAddressing", "clamp"));
+  auto filtering = TextureFilteringNames.getLeft(config.getString("textureFiltering", "nearest"));
+  if (addressing == TextureAddressing::Clamp) {
+    glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+  } else {
+    glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_REPEAT);
+    glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_REPEAT);
+  }
+  if (!multisample) {
+    if (filtering == TextureFiltering::Nearest) {
+      glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+      glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    } else {
+      glTexParameterf(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+      glTexParameterf(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    }
+  }
 
   glGenFramebuffers(1, &id);
   if (!id)
@@ -184,6 +204,7 @@ void OpenGlRenderer::loadConfig(Json const& config) {
   for (auto& pair : config.getObject("frameBuffers", {})) {
     Json config = pair.second;
     config = config.set("multisample", m_multiSampling);
+    Logger::info("Creating framebuffer {}", pair.first);
     m_frameBuffers[pair.first] = make_ref<GlFrameBuffer>(config);
 
   }
@@ -257,8 +278,9 @@ void OpenGlRenderer::loadEffectConfig(String const& name, Json const& effectConf
   auto& effect = m_effects.emplace(name, Effect()).first->second;
   effect.program = m_program;
   effect.config = effectConfig;
+  effect.includeVBTextures = effectConfig.getBool("includeVBTextures",true);
   m_currentEffect = &effect;
-  setupGlUniforms(effect);
+  setupGlUniforms(effect,m_screenSize);
 
   for (auto const& p : effectConfig.getObject("effectParameters", {})) {
     EffectParameter effectParameter;
@@ -307,7 +329,7 @@ void OpenGlRenderer::loadEffectConfig(String const& name, Json const& effectConf
   // Assign each texture parameter a texture unit starting with MultiTextureCount, the first
   // few texture units are used by the primary textures being drawn.  Currently,
   // maximum texture units are not checked.
-  unsigned parameterTextureUnit = MultiTextureCount;
+  unsigned parameterTextureUnit = effect.includeVBTextures ? MultiTextureCount : 0;
 
   for (auto const& p : effectConfig.getObject("effectTextures", {})) {
     EffectTexture effectTexture;
@@ -394,19 +416,39 @@ bool OpenGlRenderer::switchEffectConfig(String const& name) {
   if (auto blitFrameBufferId = effect.config.optString("blitFrameBuffer"))
     blitGlFrameBuffer(getGlFrameBuffer(*blitFrameBufferId));
 
-  if (auto frameBufferId = effect.config.optString("frameBuffer"))
+  auto effectScreenSize = m_screenSize;
-    switchGlFrameBuffer(getGlFrameBuffer(*frameBufferId));
+  if (auto frameBufferId = effect.config.optString("frameBuffer")) {
-  else {
+    auto buf = getGlFrameBuffer(*frameBufferId);
+    switchGlFrameBuffer(buf);
+    effectScreenSize = m_screenSize/(buf->sizeDiv);
+  } else {
     m_currentFrameBuffer.reset();
     glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
   }
 
   glUseProgram(m_program = effect.program);
-  setupGlUniforms(effect);
+  setupGlUniforms(effect,effectScreenSize);
   m_currentEffect = &effect;
 
   setEffectParameter("vertexRounding", m_multiSampling > 0);
-
+  if (auto fbts = effect.config.optArray("frameBufferTextures")) {
+    for (auto const& fbt : *fbts) {
+      if (auto frameBufferId = fbt.optString("framebuffer")) {
+        auto textureUniform=fbt.getString("texture");
+        auto ptr = m_currentEffect->textures.ptr(textureUniform);
+        if (ptr) {
+          if (!ptr->textureValue || ptr->textureValue->textureId == 0) {  
+            auto texture = getGlFrameBuffer(*frameBufferId)->texture;
+            ptr->textureValue = texture;
+            if (ptr->textureSizeUniform != -1) {
+              auto textureSize = ptr->textureValue->glTextureSize();
+              glUniform2f(ptr->textureSizeUniform, textureSize[0], textureSize[1]);
+            }
+          }
+        }
+      }
+    }
+  }
   return true;
 }
 
@@ -507,10 +549,10 @@ void OpenGlRenderer::setScreenSize(Vec2U screenSize) {
   for (auto& frameBuffer : m_frameBuffers) {
     if (unsigned multisample = frameBuffer.second->multisample) {
       glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, frameBuffer.second->texture->glTextureId());
-      glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, multisample, GL_RGBA8, m_screenSize[0], m_screenSize[1], GL_TRUE);
+      glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, multisample, GL_RGBA8, m_screenSize[0]/frameBuffer.second->sizeDiv, m_screenSize[1]/frameBuffer.second->sizeDiv, GL_TRUE);
     } else {
       glBindTexture(GL_TEXTURE_2D, frameBuffer.second->texture->glTextureId());
-      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_screenSize[0], m_screenSize[1], 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_screenSize[0]/frameBuffer.second->sizeDiv, m_screenSize[1]/frameBuffer.second->sizeDiv, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
     }
   }
 }
@@ -963,11 +1005,13 @@ void OpenGlRenderer::renderGlBuffer(GlRenderBuffer const& renderBuffer, Mat3F co
   for (auto const& vb : renderBuffer.vertexBuffers) {
     glUniformMatrix3fv(m_vertexTransformUniform, 1, GL_TRUE, transformation.ptr());
 
+    if (m_currentEffect->includeVBTextures) {
       for (size_t i = 0; i < vb.textures.size(); ++i) {
         glUniform2f(m_textureSizeUniforms[i], vb.textures[i].size[0], vb.textures[i].size[1]);
         glActiveTexture(GL_TEXTURE0 + i);
         glBindTexture(GL_TEXTURE_2D, vb.textures[i].texture);
       }
+    }
 
     for (auto const& p : m_currentEffect->textures) {
       if (p.second.textureValue) {
@@ -993,7 +1037,7 @@ void OpenGlRenderer::renderGlBuffer(GlRenderBuffer const& renderBuffer, Mat3F co
 }
 
 //Assumes the passed effect program is currently in use.
-void OpenGlRenderer::setupGlUniforms(Effect& effect) {
+void OpenGlRenderer::setupGlUniforms(Effect& effect, Vec2U screenSize) {
   m_positionAttribute = effect.getAttribute("vertexPosition");
   m_colorAttribute = effect.getAttribute("vertexColor");
   m_texCoordAttribute = effect.getAttribute("vertexTextureCoordinate");
@@ -1001,17 +1045,21 @@ void OpenGlRenderer::setupGlUniforms(Effect& effect) {
 
   m_textureUniforms.clear();
   m_textureSizeUniforms.clear();
+  if (effect.includeVBTextures) {
     for (size_t i = 0; i < MultiTextureCount; ++i) {
       m_textureUniforms.append(effect.getUniform(strf("texture{}", i).c_str()));
       m_textureSizeUniforms.append(effect.getUniform(strf("textureSize{}", i).c_str()));
     }
+  }
   m_screenSizeUniform = effect.getUniform("screenSize");
   m_vertexTransformUniform = effect.getUniform("vertexTransform");
 
+  if (effect.includeVBTextures) {
     for (size_t i = 0; i < MultiTextureCount; ++i)
       glUniform1i(m_textureUniforms[i], i);
+  }
 
-  glUniform2f(m_screenSizeUniform, m_screenSize[0], m_screenSize[1]);
+  glUniform2f(m_screenSizeUniform, screenSize[0], screenSize[1]);
 }
 
 RefPtr<OpenGlRenderer::GlFrameBuffer> OpenGlRenderer::getGlFrameBuffer(String const& id) {

source/application/StarRenderer_opengl.hpp

@@ -180,6 +180,7 @@ private:
     Json config;
     bool blitted = false;
     unsigned multisample = 0;
+    unsigned sizeDiv = 1;
 
     GlFrameBuffer(Json const& config);
     ~GlFrameBuffer();
@@ -197,6 +198,7 @@ private:
 
     GLuint getAttribute(String const& name);
     GLuint getUniform(String const& name);
+    bool includeVBTextures;
   };
 
   static bool logGlErrorSummary(String prefix);
@@ -211,7 +213,7 @@ private:
 
   void renderGlBuffer(GlRenderBuffer const& renderBuffer, Mat3F const& transformation);
 
-  void setupGlUniforms(Effect& effect);
+  void setupGlUniforms(Effect& effect, Vec2U screenSize);
 
   RefPtr<OpenGlRenderer::GlFrameBuffer> getGlFrameBuffer(String const& id);
   void blitGlFrameBuffer(RefPtr<OpenGlRenderer::GlFrameBuffer> const& frameBuffer);

source/client/StarClientApplication.cpp

@@ -400,6 +400,17 @@ void ClientApplication::render() {
       });
       LogMap::set("client_render_world_painter", strf(u8"{:05d}\u00b5s", Time::monotonicMicroseconds() - paintStart));
       LogMap::set("client_render_world_total", strf(u8"{:05d}\u00b5s", Time::monotonicMicroseconds() - totalStart));
+      
+      auto size = Vec2F(renderer->screenSize());
+      auto quad = renderFlatRect(RectF::withSize(size/-2, size), Vec4B(0.0f,0.0f,0.0f,0.0f), 0.0f);
+      for (auto& layer : m_postProcessLayers) {
+        for(unsigned i = 0; i < layer.passes; i++) {
+          for (auto& effect : layer.effects) {
+            renderer->switchEffectConfig(effect);
+            renderer->render(quad);
+          }
+        }
+      }
     }
     renderer->switchEffectConfig("interface");
     auto start = Time::monotonicMicroseconds();
@@ -451,6 +462,18 @@ void ClientApplication::renderReload() {
   renderer->loadConfig(assets->json("/rendering/opengl.config"));
   
   loadEffectConfig("world");
+  
+  m_postProcessLayers.clear();
+  auto postProcessLayers = assets->json("/client.config:postProcessLayers").toArray();
+  for (auto& layer : postProcessLayers) {
+    List<String> effects;
+    for (auto& effect : layer.getArray("effects")) {
+      auto effectStr = effect.toString();
+      loadEffectConfig(effectStr);
+      effects.append(effectStr);
+    }
+    m_postProcessLayers.append(PostProcessLayer{effects,layer.getUInt("passes",1)});
+  }
   loadEffectConfig("interface");
 }
 

source/client/StarClientApplication.hpp

@@ -53,6 +53,11 @@ private:
     String password;
   };
   
+  struct PostProcessLayer {
+    List<String> effects;
+    unsigned passes;
+  };
+
   void renderReload();
 
   void changeState(MainAppState newState);
@@ -99,6 +104,8 @@ private:
   WorldRenderData m_renderData;
   MainInterfacePtr m_mainInterface;
   
+  List<PostProcessLayer> m_postProcessLayers;
+
   // Valid if main app state == SinglePlayer
   UniverseServerPtr m_universeServer;