1 files changed, 210 insertions, 0 deletions
diff --git a/src/Rml.cpp b/src/Rml.cpp
new file mode 100644
index 0000000..6ed83c1
--- /dev/null
+++ b/src/Rml.cpp
@@ -0,0 +1,210 @@
+#include "Rml.hpp"
+
+#include <easylogging++.h>
+
+#include "AssetManager.hpp"
+#include "Shader.hpp"
+#include "Utility.hpp"
+
+double RmlSystemInterface::GetElapsedTime() {
+	return totalTime;
+}
+
+bool RmlSystemInterface::LogMessage(Rml::Log::Type type, const Rml::String& message) {
+    switch (type) {
+    case Rml::Log::Type::LT_ALWAYS:
+        LOG(ERROR) << message;
+        break;
+    case Rml::Log::Type::LT_ERROR:
+        LOG(ERROR) << message;
+        break;
+    case Rml::Log::Type::LT_ASSERT:
+        LOG(ERROR) << message;
+        break;
+    case Rml::Log::Type::LT_WARNING:
+        LOG(WARNING) << message;
+        break;
+    case Rml::Log::Type::LT_INFO:
+        LOG(INFO) << message;
+        break;
+    case Rml::Log::Type::LT_DEBUG:
+        LOG(DEBUG) << message;
+        break;
+    case Rml::Log::Type::LT_MAX:
+        LOG(DEBUG) << message;
+        break;
+    }
+    return true;
+}
+
+void RmlSystemInterface::SetClipboardText(const Rml::String& text) {
+    clipboard = text;
+}
+
+void RmlSystemInterface::GetClipboardText(Rml::String& text) {
+    text = clipboard;
+}
+
+RmlRenderInterface::RmlRenderInterface(RenderState& renderState) : State(&renderState) {
+    glGenVertexArrays(1, &Vao);
+    glBindVertexArray(Vao);
+    glCheckError();
+
+    glGenBuffers(1, &Ebo);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, Ebo);
+    glBufferData(GL_ELEMENT_ARRAY_BUFFER, 0, nullptr, GL_STREAM_DRAW);
+    glCheckError();
+
+    glGenBuffers(1, &Vbo);
+    glBindBuffer(GL_ARRAY_BUFFER, Vbo);
+    glBufferData(GL_ARRAY_BUFFER, 0, nullptr, GL_STREAM_DRAW);
+    glCheckError();
+    
+    {
+        //Vertex position (2 float)
+        GLuint PosAttribPos = 0;
+        glVertexAttribPointer(PosAttribPos, 2, GL_FLOAT, GL_FALSE, 20, (void*)0);
+        glEnableVertexAttribArray(PosAttribPos);
+
+        //Vertex colour (4 uint8 RGBA)
+        GLuint ColAttribPos = 1;
+        glVertexAttribIPointer(ColAttribPos, 4, GL_UNSIGNED_BYTE, 20, (void*)8);
+        glEnableVertexAttribArray(ColAttribPos);
+
+        //Vertex tex_coord (2 float)
+        GLuint TexAttribPos = 2;
+        glVertexAttribPointer(TexAttribPos, 2, GL_FLOAT, GL_FALSE, 20, (void*)12);
+        glEnableVertexAttribArray(TexAttribPos);
+    }
+    glBindVertexArray(0);
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+    glCheckError();
+}
+
+RmlRenderInterface::~RmlRenderInterface() {
+    glDeleteVertexArrays(1, &Vao);
+    glDeleteBuffers(1, &Vbo);
+    glDeleteBuffers(1, &Ebo);
+    glCheckError();
+}
+
+void RmlRenderInterface::RenderGeometry(Rml::Vertex* vertices, int num_vertices, int* indices, int num_indices, Rml::TextureHandle texture, const Rml::Vector2f& translation) {
+    if (texture) {
+        AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rmltex")->shader->Activate();
+        AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rmltex")->shader->SetUniform("translation", glm::vec2(translation.x, translation.y));
+        glBindTexture(GL_TEXTURE_2D, texture);
+    } else {
+        AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rml")->shader->Activate();
+        AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rml")->shader->SetUniform("translation", glm::vec2(translation.x, translation.y));
+    }   
+    glCheckError();
+
+    glBindVertexArray(Vao);
+    glCheckError();
+
+    glBindBuffer(GL_ARRAY_BUFFER, Vbo);
+    glBufferData(GL_ARRAY_BUFFER, num_vertices * sizeof(Rml::Vertex), vertices, GL_STREAM_DRAW);
+    glCheckError();
+
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, Ebo);
+    glBufferData(GL_ELEMENT_ARRAY_BUFFER, num_indices * sizeof(int), indices, GL_STREAM_DRAW);
+    glCheckError();
+
+    glDrawElements(GL_TRIANGLES, num_indices, GL_UNSIGNED_INT, 0);
+    glCheckError();
+    glBindVertexArray(0);
+}
+
+void RmlRenderInterface::EnableScissorRegion(bool enable) {
+
+}
+
+void RmlRenderInterface::SetScissorRegion(int x, int y, int width, int height) {
+
+}
+
+bool RmlRenderInterface::LoadTexture(Rml::TextureHandle& texture_handle, Rml::Vector2i& texture_dimensions, const Rml::String& source) {
+    return false;
+}
+
+bool RmlRenderInterface::GenerateTexture(Rml::TextureHandle& texture_handle, const Rml::byte* source, const Rml::Vector2i& source_dimensions) {
+    int mipLevelCount = 1;
+    glActiveTexture(GL_TEXTURE0);
+    GLuint texture;
+    glGenTextures(1, &texture);
+    glBindTexture(GL_TEXTURE_2D, texture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glCheckError();
+
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, source_dimensions.x, source_dimensions.y, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, source);
+    glCheckError();
+
+    texture_handle = texture;
+    return true;
+}
+
+void RmlRenderInterface::ReleaseTexture(Rml::TextureHandle texture) {
+    GLuint textures = texture;
+    glDeleteTextures(1, &textures);
+    glCheckError();
+}
+
+void RmlRenderInterface::Update(unsigned int windowWidth, unsigned int windowHeight) {
+    AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rml")->shader->Activate();
+    AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rml")->shader->SetUniform("viewportSize", windowWidth, windowHeight);
+    glCheckError();
+    AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rmltex")->shader->Activate();
+    AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rmltex")->shader->SetUniform("viewportSize", windowWidth, windowHeight);
+    AssetManager::GetAsset<AssetShader>("/altcraft/shaders/rmltex")->shader->SetUniform("fontTexture", 0);
+    glCheckError();
+}
+
+Rml::FileHandle RmlFileInterface::Open(const Rml::String& path) {
+    Rml::FileHandle fileId = handles.rbegin() != handles.rend() ? handles.rbegin()->first + 1 : 1;
+    while (handles.find(fileId) != handles.end())
+        fileId++;
+
+    AssetHandle handle;
+    handle.fileName = path;
+    std::string assetName = path;
+    if (*assetName.begin() != '/')
+        assetName = "/" + assetName;
+    handle.assetPtr = AssetManager::GetAssetByAssetName(assetName);
+    handle.filePos = 0;
+
+    if (handle.assetPtr != nullptr)
+        handles.insert(std::make_pair(fileId, handle));
+    else
+        fileId = 0;
+    return fileId;
+}
+
+void RmlFileInterface::Close(Rml::FileHandle file) {
+    handles.erase(file);
+}
+
+size_t RmlFileInterface::Read(void* buffer, size_t size, Rml::FileHandle file) {
+    size_t readed = 0;
+    readed = _min((size_t)(handles[file].assetPtr->data.size() - handles[file].filePos), size);
+    std::memcpy(buffer, handles[file].assetPtr->data.data() + handles[file].filePos, readed);
+    handles[file].filePos += readed;
+    return readed;
+}
+
+bool RmlFileInterface::Seek(Rml::FileHandle file, long offset, int origin) {
+    unsigned long long base = 0;
+    if (origin == SEEK_CUR)
+        base = handles[file].filePos;
+    else if (origin == SEEK_END)
+        base = handles[file].assetPtr->data.size();
+    handles[file].filePos = base + offset;
+    return true;
+}
+
+size_t RmlFileInterface::Tell(Rml::FileHandle file) {
+    return handles[file].filePos;
+}