Merge remote-tracking branch 'origin/TextRendering' into Networking

# Conflicts: # include/Engine/Rendering/RenderSystem.h # src/Engine/Rendering/RenderSystem.cpp
2016-01-22 22:08:56 +01:00
parent 55ee2bb3bf ea9c4d19d0
commit 90867b094a
23 changed files with 741 additions and 96 deletions
@@ -8,6 +8,7 @@ find_package(assimp REQUIRED)
 find_package(ZLIB REQUIRED)
 find_package(PNG REQUIRED)
 find_package(Xerces REQUIRED)
+find_package(Freetype REQUIRED)
 # Because FindOpenAL is retarded
 set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "${CMAKE_SOURCE_DIR}/deps/include/OpenAL")
 find_package(OpenAL REQUIRED)
@@ -25,6 +26,7 @@ include_directories(
    ${assimp_INCLUDE_DIRS}
    ${PNG_INCLUDE_DIRS}
    ${Xerces_INCLUDE_DIRS}
+    ${FREETYPE_INCLUDE_DIRS}
    ${OPENAL_INCLUDE_DIR}
    ${X11_INCLUDE_DIRS}
 )
@@ -126,6 +128,7 @@ set(LIBRARIES
    ${assimp_LIBRARIES}
    ${PNG_LIBRARIES}
    ${Xerces_LIBRARIES}
+    ${FREETYPE_LIBRARIES}
    ${OPENAL_LIBRARY}
    ${X11_LIBRARIES}
 )
@@ -0,0 +1,108 @@
+#include "Rendering/Font.h"
+
+
+Font::Font(std::string path)
+{
+    typedef boost::tokenizer<boost::char_separator<char>> tokenizer;
+    boost::char_separator<char> sep(",");
+    tokenizer tok(path, sep);
+
+
+    tokenizer::iterator it = tok.begin();
+    std::string filePath = "";
+
+    if (it != tok.end()) {
+        filePath = (*it).c_str();
+        it++;
+        if (it != tok.end()) {
+            if((*it).c_str() == "") {
+                throw std::runtime_error("");
+            }
+
+            try {
+                FontSize = boost::lexical_cast<int>((*it).c_str());
+            } catch (boost::bad_lexical_cast const&) {
+                LOG_ERROR("input string did not have a valid font resolution");
+                throw std::runtime_error("");
+            }
+        }
+    } else {
+        throw std::runtime_error("");;
+    }
+
+
+    FT_Library library;
+    FT_Face face;
+
+    if (FT_Init_FreeType(&library)) {
+        LOG_ERROR("FreeType error: init failed");
+        throw std::runtime_error("");;
+    }
+
+    if (FT_New_Face(library, filePath.c_str(), 0, &face)) {
+        LOG_ERROR("FreeType error: loading font");
+        throw std::runtime_error("");;
+    }
+
+    FT_Set_Char_Size(face, 0, FontSize*64, 300, 300); // temp
+    FT_Set_Pixel_Sizes(face, 0, FontSize);            //
+
+    if (FT_Load_Char(face, 'X', FT_LOAD_RENDER)) {
+        LOG_ERROR("FreeType error: loading char");
+        throw std::runtime_error("");;
+    }
+
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+    for (GLubyte c = 0; c < 128; c++) {
+       
+
+        //Load character glyph
+        if (FT_Load_Char(face, c, FT_LOAD_RENDER)) {
+            continue;
+        }
+
+        //Generate texture
+        GLuint texture;
+        glGenTextures(1, &texture);
+        glBindTexture(GL_TEXTURE_2D, texture);
+
+        glTexImage2D(
+            GL_TEXTURE_2D,
+            0,
+            GL_RED,
+            face->glyph->bitmap.width,
+            face->glyph->bitmap.rows,
+            0,
+            GL_RED,
+            GL_UNSIGNED_BYTE,
+            face->glyph->bitmap.buffer
+            );
+        // Set texture options
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        // Now store character for later use
+        Character character = {
+            texture,
+            glm::ivec2(face->glyph->bitmap.width, face->glyph->bitmap.rows),
+            glm::ivec2(face->glyph->bitmap_left, face->glyph->bitmap_top),
+            face->glyph->advance.x
+        };
+
+        m_Characters.insert(std::pair<GLchar, Character>(c, character));
+    }
+
+    
+    FT_Done_Face(face);
+    FT_Done_FreeType(library);
+    GLERROR("Font Load");
+}
+
+Font::~Font()
+{
+    for (auto c : m_Characters) {
+        glDeleteTextures(1, &c.second.TextureID);
+    }
+}
@@ -46,10 +46,8 @@ void PickingPass::InitializeShaderPrograms()
 void PickingPass::Draw(RenderScene& scene)
 {
    PickingPassState* state = new PickingPassState(m_PickingBuffer.GetHandle());
-
    
    //TODO: Render: Add code for more jobs than modeljobs.
-
    GLuint ShaderHandle = m_PickingProgram->GetHandle();
    m_PickingProgram->Bind();

@@ -78,9 +76,9 @@ void PickingPass::Draw(RenderScene& scene)
                    m_EntityColors[std::make_tuple(pickInfo.Entity, pickInfo.World, pickInfo.Camera)] = glm::ivec2(pickColor[0], pickColor[1]);
                    if (m_ColorCounter[0] > 255) {
                        m_ColorCounter[0] = 0;
-                        m_ColorCounter[1]++;;
+                        m_ColorCounter[1]++;
                    } else {
-                        m_ColorCounter[0]++;;
+                        m_ColorCounter[0]++;
                    }
                }

@@ -8,6 +8,7 @@ PickingPassState::PickingPassState(GLuint frameBuffer)
    GLERROR("---3");
    Enable(GL_DEPTH_TEST);
    Enable(GL_CULL_FACE);
+    Disable(GL_BLEND);

    glm::vec4 clearColor = glm::vec4(0.f);
    //ClearColor(clearColor);
@@ -110,6 +110,42 @@ void RenderSystem::fillDirectionalLights(std::list<std::shared_ptr<RenderJob>>&
    }
 }

+
+void RenderSystem::fillText(std::list<std::shared_ptr<RenderJob>>& jobs, World* world)
+{
+    auto texts = world->GetComponents("Text");
+    if (texts == nullptr) {
+        return;
+    }
+
+    for (auto& textComponent : *texts) {
+        bool visible = textComponent["Visible"];
+        if (!visible) {
+            continue;
+        }
+        std::string resource = textComponent["Resource"];
+        if (resource.empty()) {
+            continue;
+        }
+
+        Font* font;
+        try {
+            font = ResourceManager::Load<Font>(resource);
+        } catch (const std::exception&) {
+            try {
+                font = ResourceManager::Load<Font>("Fonts/DroidSans.ttf,16");
+            } catch (const std::exception&) {
+                continue;
+            }
+        }
+
+        glm::mat4 modelMatrix = Transform::ModelMatrix(textComponent.EntityID, world);
+        std::shared_ptr<TextJob> modelJob = std::shared_ptr<TextJob>(new TextJob(modelMatrix, font, textComponent));
+        jobs.push_back(modelJob);
+
+    }
+}
+
 bool RenderSystem::OnInputCommand(const Events::InputCommand& e)
 {
    return false;
@@ -133,6 +169,7 @@ void RenderSystem::Update(double dt)
    fillModels(scene.ForwardJobs);
    fillPointLights(scene.PointLightJobs, m_World);
    fillDirectionalLights(scene.DirectionalLightJobs, m_World);
+    fillText(scene.TextJobs, world);
    m_RenderFrame->Add(scene);
   
 }
@@ -9,6 +9,9 @@ void Renderer::Initialize()
 	glfwSwapInterval(m_VSYNC);
 	InitializeShaders();
    InitializeTextures();
+    m_TextRenderer = new TextRenderer();
+    m_TextRenderer->Initialize();
+

    m_ScreenQuad = ResourceManager::Load<Model>("Models/Core/ScreenQuad.obj");
    m_UnitQuad = ResourceManager::Load<Model>("Models/Core/UnitQuad.obj");
@@ -77,6 +80,7 @@ void Renderer::Update(double dt)
 {
    m_EventBroker->Process<Renderer>();
    InputUpdate(dt);
+    m_TextRenderer->Update();
    m_ImGuiRenderPass->Update(dt);
 }

@@ -97,7 +101,11 @@ void Renderer::Draw(RenderFrame& frame)
        //m_DrawScenePass->Draw(rq);

        GLERROR("Renderer::Draw m_DrawScenePass->Draw");
+
+        m_TextRenderer->Draw(*scene);
+
    }
+    

    m_ImGuiRenderPass->Draw();
 	glfwSwapBuffers(m_Window);
@@ -0,0 +1,110 @@
+#include "Rendering/TextRenderer.h"
+
+TextRenderer::TextRenderer()
+{
+
+}
+
+void TextRenderer::Initialize()
+{
+    glGenVertexArrays(1, &VAO);
+    glGenBuffers(1, &VBO);
+    glBindVertexArray(VAO);
+    glBindBuffer(GL_ARRAY_BUFFER, VBO);
+    glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * 6 * 4, NULL, GL_DYNAMIC_DRAW);
+    glEnableVertexAttribArray(0);
+    glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), 0);
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
+    glBindVertexArray(0);
+
+    m_TextProgram = ResourceManager::Load<ShaderProgram>("#TextProgram");
+    m_TextProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Text.vert.glsl")));
+    m_TextProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Text.frag.glsl")));
+    m_TextProgram->Compile();
+    m_TextProgram->Link();
+}
+
+void TextRenderer::Update()
+{
+
+}
+
+void TextRenderer::Draw(RenderScene& scene)
+{
+    for (auto &job : scene.TextJobs) {
+        auto textJob = std::dynamic_pointer_cast<TextJob>(job);
+        if (textJob) {
+
+            renderText(textJob->Content, textJob->Resource, textJob->Alignment, textJob->Color, textJob->Matrix, scene.Camera->ProjectionMatrix(), scene.Camera->ViewMatrix());
+        }
+    }
+}
+
+void TextRenderer::renderText(std::string text, Font* font, TextJob::AlignmentEnum alignment, glm::vec4 color, glm::mat4 modelMatrix, glm::mat4 projectionMatrix, glm::mat4 viewMatrix)
+{
+    GLfloat penX = 0;
+    GLfloat penY = 0;
+    float scale = 1.0/font->FontSize;
+
+    GLfloat stringWidth = 0.f;
+
+    for (std::string::const_iterator c = text.begin(); c != text.end(); c++) {
+        Font::Character ch = font->m_Characters[*c];
+        stringWidth += (ch.Advance >> 6) * scale;
+    }
+
+    if(alignment == TextJob::AlignmentEnum::Center) {
+        penX = -stringWidth/2.f;
+    } else if (alignment == TextJob::AlignmentEnum::Right) {
+        penX = -stringWidth;
+    } else {
+        penX = 0;
+    }	
+    
+    glEnable(GL_BLEND);
+    glDisable(GL_CULL_FACE);
+    glEnable(GL_DEPTH_TEST);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+    m_TextProgram->Bind();
+    glUniform3f(glGetUniformLocation(m_TextProgram->GetHandle(), "textColor"), color.x, color.y, color.z);
+    glUniformMatrix4fv(glGetUniformLocation(m_TextProgram->GetHandle(), "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
+    glUniformMatrix4fv(glGetUniformLocation(m_TextProgram->GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(viewMatrix));
+    glUniformMatrix4fv(glGetUniformLocation(m_TextProgram->GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(projectionMatrix));
+    glActiveTexture(GL_TEXTURE0);
+    glBindVertexArray(VAO);
+
+
+    for (std::string::const_iterator c = text.begin(); c != text.end(); c++) {
+        Font::Character ch = font->m_Characters[*c];
+
+        GLfloat xpos = penX + ch.Bearing.x * scale;
+        GLfloat ypos = penY - (ch.Size.y - ch.Bearing.y) * scale;
+
+        GLfloat w = ch.Size.x * scale;
+        GLfloat h = ch.Size.y * scale;
+
+        GLfloat vertices[6][4] = {
+            { xpos, ypos + h, 0.0, 0.0 },
+            { xpos, ypos, 0.0, 1.0 },
+            { xpos + w, ypos, 1.0, 1.0 },
+
+            { xpos, ypos + h, 0.0, 0.0 },
+            { xpos + w, ypos, 1.0, 1.0 },
+            { xpos + w, ypos + h, 1.0, 0.0 }
+        };
+
+        glBindTexture(GL_TEXTURE_2D, ch.TextureID);
+
+        glBindBuffer(GL_ARRAY_BUFFER, VBO);
+        glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(vertices), vertices);
+        glBindBuffer(GL_ARRAY_BUFFER, 0);
+        glDrawArrays(GL_TRIANGLES, 0, 6);
+        penX += (ch.Advance >> 6) * scale; // Bitshift by 6 to get value in pixels (2^6 = 64)
+    }
+    glBindVertexArray(0);
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    GLERROR("Text rendering Error");
+}
+