Merge branch 'hardware-interface'

Conflicts:
	src/core/src/core.h

10 files changed, 1218 insertions, 0 deletions

diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt
new file mode 100644
index 000000000..3f486b8fe
--- /dev/null
+++ b/src/video_core/CMakeLists.txt
@@ -0,0 +1,19 @@
+set(SRCS
+            src/bp_mem.cpp
+            src/cp_mem.cpp
+            src/xf_mem.cpp
+            src/fifo.cpp
+            src/fifo_player.cpp
+            src/vertex_loader.cpp
+            src/vertex_manager.cpp
+            src/video_core.cpp
+            src/shader_manager.cpp
+            src/texture_decoder.cpp
+            src/texture_manager.cpp
+            src/utils.cpp
+            src/renderer_gl3/renderer_gl3.cpp
+            src/renderer_gl3/shader_interface.cpp
+            src/renderer_gl3/texture_interface.cpp
+            src/renderer_gl3/uniform_manager.cpp)
+
+add_library(video_core STATIC ${SRCS})
diff --git a/src/video_core/src/renderer_base.h b/src/video_core/src/renderer_base.h
new file mode 100644
index 000000000..50f1475b2
--- /dev/null
+++ b/src/video_core/src/renderer_base.h
@@ -0,0 +1,132 @@
+/**
+ * Copyright (C) 2014 Citra Emulator
+ *
+ * @file    renderer_base.h
+ * @author  bunnei
+ * @date    2014-04-05
+ * @brief   Renderer base class for new video core
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#pragma once
+
+#include "common.h"
+#include "hash.h"
+
+class RendererBase {
+public:
+
+    /// Used to reference a framebuffer
+    enum kFramebuffer {
+        kFramebuffer_VirtualXFB = 0,
+        kFramebuffer_EFB,
+        kFramebuffer_Texture
+    };
+
+    /// Used for referencing the render modes
+    enum kRenderMode {
+        kRenderMode_None = 0,
+        kRenderMode_Multipass = 1,
+        kRenderMode_ZComp = 2,
+        kRenderMode_UseDstAlpha = 4
+    };
+
+    RendererBase() : current_fps_(0), current_frame_(0) {
+    }
+
+    ~RendererBase() {
+    }
+
+    /// Swap buffers (render frame)
+    virtual void SwapBuffers() = 0;
+
+    /** 
+     * Blits the EFB to the external framebuffer (XFB)
+     * @param src_rect Source rectangle in EFB to copy
+     * @param dst_rect Destination rectangle in EFB to copy to
+     * @param dest_height Destination height in pixels
+     */
+    virtual void CopyToXFB(const Rect& src_rect, const Rect& dst_rect) = 0;
+
+    /**
+     * Clear the screen
+     * @param rect Screen rectangle to clear
+     * @param enable_color Enable color clearing
+     * @param enable_alpha Enable alpha clearing
+     * @param enable_z Enable depth clearing
+     * @param color Clear color
+     * @param z Clear depth
+     */
+    virtual void Clear(const Rect& rect, bool enable_color, bool enable_alpha, bool enable_z, 
+        u32 color, u32 z) = 0;
+
+    /// Sets the renderer viewport location, width, and height
+    virtual void SetViewport(int x, int y, int width, int height) = 0;
+
+    /// Sets the renderer depthrange, znear and zfar
+    virtual void SetDepthRange(double znear, double zfar) = 0;
+
+    /* Sets the scissor box
+     * @param rect Renderer rectangle to set scissor box to
+     */
+    virtual void SetScissorBox(const Rect& rect) = 0;
+
+    /**
+     * Sets the line and point size
+     * @param line_width Line width to use
+     * @param point_size Point size to use
+     */
+    virtual void SetLinePointSize(f32 line_width, f32 point_size) = 0;
+
+    /**
+     * Set a specific render mode
+     * @param flag Render flags mode to enable
+     */
+    virtual void SetMode(kRenderMode flags) = 0;
+
+    /// Reset the full renderer API to the NULL state
+    virtual void ResetRenderState() = 0;
+
+    /// Restore the full renderer API state - As the game set it
+    virtual void RestoreRenderState() = 0;
+
+    /** 
+     * Set the emulator window to use for renderer
+     * @param window EmuWindow handle to emulator window to use for rendering
+     */
+    virtual void SetWindow(EmuWindow* window) = 0;
+
+    /// Initialize the renderer
+    virtual void Init() = 0;
+
+    /// Shutdown the renderer
+    virtual void ShutDown() = 0;
+
+    // Getter/setter functions:
+    // ------------------------
+
+    f32 current_fps() const { return current_fps_; }
+
+    int current_frame() const { return current_frame_; }
+
+protected:
+    f32 current_fps_;                       ///< Current framerate, should be set by the renderer
+    int current_frame_;                     ///< Current frame, should be set by the renderer
+
+private:
+    DISALLOW_COPY_AND_ASSIGN(RendererBase);
+};
diff --git a/src/video_core/src/renderer_opengl/renderer_opengl.cpp b/src/video_core/src/renderer_opengl/renderer_opengl.cpp
new file mode 100644
index 000000000..27917a5a2
--- /dev/null
+++ b/src/video_core/src/renderer_opengl/renderer_opengl.cpp
@@ -0,0 +1,461 @@
+/**
+ * Copyright (C) 2014 Citra Emulator
+ *
+ * @file    renderer_opengl.cpp
+ * @author  bunnei
+ * @date    2014-04-05
+ * @brief   Renderer for OpenGL 3.x
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#include "mem_map.h"
+#include "video_core.h"
+#include "renderer_opengl/renderer_opengl.h"
+
+/**
+ * Helper function to flip framebuffer from left-to-right to top-to-bottom
+ * @param addr Address of framebuffer in RAM
+ * @param out Pointer to output buffer with flipped framebuffer
+ * @todo Early on hack... I'd like to find a more efficient way of doing this /bunnei
+ */
+inline void _flip_framebuffer(u32 addr, u8* out) {
+    u8* in = Memory::GetPointer(addr);
+    for (int y = 0; y < VideoCore::kScreenTopHeight; y++) {
+        for (int x = 0; x < VideoCore::kScreenTopWidth; x++) {
+            int in_coord = (VideoCore::kScreenTopHeight * 3 * x) + (VideoCore::kScreenTopHeight * 3)
+                - (3 * y + 3);
+            int out_coord = (VideoCore::kScreenTopWidth * y * 3) + (x * 3);
+
+            out[out_coord + 0] = in[in_coord + 0];
+            out[out_coord + 1] = in[in_coord + 1];
+            out[out_coord + 2] = in[in_coord + 2];
+        }
+    }
+}
+
+/// RendererOpenGL constructor
+RendererOpenGL::RendererOpenGL() {
+    memset(fbo_, 0, sizeof(fbo_));  
+    memset(fbo_rbo_, 0, sizeof(fbo_rbo_));  
+    memset(fbo_depth_buffers_, 0, sizeof(fbo_depth_buffers_));
+
+    resolution_width_ = max(VideoCore::kScreenTopWidth, VideoCore::kScreenBottomWidth);
+    resolution_height_ = VideoCore::kScreenTopHeight + VideoCore::kScreenBottomHeight;
+
+    xfb_texture_top_ = 0;
+    xfb_texture_bottom_ = 0;
+
+    xfb_top_ = 0;
+    xfb_bottom_ = 0;
+}
+
+/// RendererOpenGL destructor
+RendererOpenGL::~RendererOpenGL() {
+}
+
+/// Swap buffers (render frame)
+void RendererOpenGL::SwapBuffers() {
+
+    ResetRenderState();
+
+    // EFB->XFB copy
+    // TODO(bunnei): This is a hack and does not belong here. The copy should be triggered by some 
+    // register write We're also treating both framebuffers as a single one in OpenGL.
+    Rect framebuffer_size(0, 0, resolution_width_, resolution_height_);
+    RenderXFB(framebuffer_size, framebuffer_size);
+
+    // XFB->Window copy
+    RenderFramebuffer();
+
+    // Swap buffers
+    render_window_->PollEvents();
+    render_window_->SwapBuffers();
+
+    // Switch back to EFB and clear
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_[kFramebuffer_EFB]);
+
+    RestoreRenderState();
+}
+
+/** 
+ * Renders external framebuffer (XFB)
+ * @param src_rect Source rectangle in XFB to copy
+ * @param dst_rect Destination rectangle in output framebuffer to copy to
+ */
+void RendererOpenGL::RenderXFB(const Rect& src_rect, const Rect& dst_rect) {
+    static u8 xfb_top_flipped[VideoCore::kScreenTopWidth * VideoCore::kScreenTopWidth *3]; 
+    static u8 xfb_bottom_flipped[VideoCore::kScreenTopWidth * VideoCore::kScreenTopWidth *3];     
+
+    _flip_framebuffer(0x20282160, xfb_top_flipped);
+    _flip_framebuffer(0x202118E0, xfb_bottom_flipped);
+
+    ResetRenderState();
+
+    // Blit the top framebuffer
+    // ------------------------
+
+    // Update textures with contents of XFB in RAM - top
+    glBindTexture(GL_TEXTURE_2D, xfb_texture_top_);
+    glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, VideoCore::kScreenTopWidth, VideoCore::kScreenTopHeight,
+        GL_RGB, GL_UNSIGNED_BYTE, xfb_top_flipped);
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    // Render target is destination framebuffer
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_[kFramebuffer_VirtualXFB]);
+    glViewport(0, 0, VideoCore::kScreenTopWidth, VideoCore::kScreenTopHeight);
+
+    // Render source is our EFB
+    glBindFramebuffer(GL_READ_FRAMEBUFFER, xfb_top_);
+    glReadBuffer(GL_COLOR_ATTACHMENT0);
+
+    // Blit
+    glBlitFramebuffer(src_rect.x0_, src_rect.y0_, src_rect.x1_, src_rect.y1_, 
+                      dst_rect.x0_, dst_rect.y1_, dst_rect.x1_, dst_rect.y0_,
+                      GL_COLOR_BUFFER_BIT, GL_LINEAR);
+
+    glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+
+    // Blit the bottom framebuffer
+    // ---------------------------
+
+    // Update textures with contents of XFB in RAM - bottom
+    glBindTexture(GL_TEXTURE_2D, xfb_texture_bottom_);
+    glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, VideoCore::kScreenTopWidth, VideoCore::kScreenTopHeight,
+        GL_RGB, GL_UNSIGNED_BYTE, xfb_bottom_flipped);
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    // Render target is destination framebuffer
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_[kFramebuffer_VirtualXFB]);
+    glViewport(0, 0,
+        VideoCore::kScreenBottomWidth, VideoCore::kScreenBottomHeight);
+
+    // Render source is our EFB
+    glBindFramebuffer(GL_READ_FRAMEBUFFER, xfb_bottom_);
+    glReadBuffer(GL_COLOR_ATTACHMENT0);
+
+    // Blit
+    int offset = (VideoCore::kScreenTopWidth - VideoCore::kScreenBottomWidth) / 2;
+    glBlitFramebuffer(0,0, VideoCore::kScreenBottomWidth, VideoCore::kScreenBottomHeight, 
+                      offset, VideoCore::kScreenBottomHeight, VideoCore::kScreenBottomWidth + offset, 0,
+                      GL_COLOR_BUFFER_BIT, GL_LINEAR);
+
+    glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+
+    RestoreRenderState();
+}
+
+/** 
+ * Blits the EFB to the external framebuffer (XFB)
+ * @param src_rect Source rectangle in EFB to copy
+ * @param dst_rect Destination rectangle in EFB to copy to
+ */
+void RendererOpenGL::CopyToXFB(const Rect& src_rect, const Rect& dst_rect) {
+    ERROR_LOG(RENDER, "CopyToXFB not implemented! No EFB support yet!");
+    //ResetRenderState();
+
+    //// Render target is destination framebuffer
+    //glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_[kFramebuffer_VirtualXFB]);
+    //glViewport(0, 0, VideoCore::kScreenTopWidth, VideoCore::kScreenTopHeight);
+
+    //// Render source is our EFB
+    //glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo_[kFramebuffer_EFB]);
+    //glReadBuffer(GL_COLOR_ATTACHMENT0);
+
+    //// Blit
+    //glBlitFramebuffer(src_rect.x0_, src_rect.y0_, src_rect.x1_, src_rect.y1_, 
+    //                  dst_rect.x0_, dst_rect.y1_, dst_rect.x1_, dst_rect.y0_,
+    //                  GL_COLOR_BUFFER_BIT, GL_LINEAR);
+
+    //glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+
+    //RestoreRenderState();
+}
+
+/**
+ * Clear the screen
+ * @param rect Screen rectangle to clear
+ * @param enable_color Enable color clearing
+ * @param enable_alpha Enable alpha clearing
+ * @param enable_z Enable depth clearing
+ * @param color Clear color
+ * @param z Clear depth
+ */
+void RendererOpenGL::Clear(const Rect& rect, bool enable_color, bool enable_alpha, bool enable_z, 
+    u32 color, u32 z) {
+    GLboolean const color_mask = enable_color ? GL_TRUE : GL_FALSE;
+    GLboolean const alpha_mask = enable_alpha ? GL_TRUE : GL_FALSE;
+
+    ResetRenderState();
+
+    // Clear color
+    glColorMask(color_mask,  color_mask,  color_mask,  alpha_mask);
+    glClearColor(float((color >> 16) & 0xFF) / 255.0f, float((color >> 8) & 0xFF) / 255.0f,
+        float((color >> 0) & 0xFF) / 255.0f, float((color >> 24) & 0xFF) / 255.0f);
+
+    // Clear depth
+    glDepthMask(enable_z ? GL_TRUE : GL_FALSE);
+    glClearDepth(float(z & 0xFFFFFF) / float(0xFFFFFF));
+
+    // Specify the rectangle of the EFB to clear
+    glEnable(GL_SCISSOR_TEST);
+    glScissor(rect.x0_, rect.y1_, rect.width(), rect.height());
+
+    // Clear it!
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    RestoreRenderState();
+}
+
+/// Sets the renderer viewport location, width, and height
+void RendererOpenGL::SetViewport(int x, int y, int width, int height) {
+    glViewport(x, y, width, height);
+}
+
+/// Sets the renderer depthrange, znear and zfar
+void RendererOpenGL::SetDepthRange(double znear, double zfar) {
+    glDepthRange(znear, zfar);
+}
+
+/* Sets the scissor box
+ * @param rect Renderer rectangle to set scissor box to
+ */
+void RendererOpenGL::SetScissorBox(const Rect& rect) {
+    glScissor(rect.x0_, rect.y1_, rect.width(), rect.height());
+}
+
+/**
+ * Sets the line and point size
+ * @param line_width Line width to use
+ * @param point_size Point size to use
+ */
+void RendererOpenGL::SetLinePointSize(f32 line_width, f32 point_size) {
+    glLineWidth((GLfloat)line_width);
+    glPointSize((GLfloat)point_size);
+}
+
+/**
+ * Set a specific render mode
+ * @param flag Render flags mode to enable
+ */
+void RendererOpenGL::SetMode(kRenderMode flags) {
+    if(flags & kRenderMode_ZComp) {
+        glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+    }
+    if(flags & kRenderMode_Multipass) {
+        glEnable(GL_DEPTH_TEST);
+        glDepthMask(GL_FALSE);          
+        glDepthFunc(GL_EQUAL);
+    }
+    if (flags & kRenderMode_UseDstAlpha) {
+        glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
+        glDisable(GL_BLEND);
+    }
+    last_mode_ |= flags;
+}
+
+/// Reset the full renderer API to the NULL state
+void RendererOpenGL::ResetRenderState() {
+    glDisable(GL_SCISSOR_TEST);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_BLEND);
+    glDepthMask(GL_FALSE);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+}
+
+/// Restore the full renderer API state - As the game set it
+void RendererOpenGL::RestoreRenderState() {
+    
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_[kFramebuffer_EFB]);
+    
+    //gp::XF_UpdateViewport();
+    SetViewport(0, 0, resolution_width_, resolution_height_);
+    SetDepthRange(0.0f, 1.0f);
+    
+    //SetGenerationMode();
+    glEnable(GL_CULL_FACE);
+    glFrontFace(GL_CCW);
+    
+    //glEnable(GL_SCISSOR_TEST);
+    //gp::BP_SetScissorBox();
+    glDisable(GL_SCISSOR_TEST);
+
+    //SetColorMask(gp::g_bp_regs.cmode0);
+    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+    
+    //SetDepthMode();
+    glDisable(GL_DEPTH_TEST);
+    glDepthMask(GL_FALSE);
+
+    //SetBlendMode(gp::g_bp_regs.cmode0, gp::g_bp_regs.cmode1, true);
+    //if (common::g_config->current_renderer_config().enable_wireframe) {
+    //    glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+    //} else {
+    //    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+    //}
+}
+
+/// Initialize the FBO
+void RendererOpenGL::InitFramebuffer() {
+    // TODO(en): This should probably be implemented with the top screen and bottom screen as 
+    // separate framebuffers
+
+    // Init the FBOs
+    // -------------
+
+    glGenFramebuffers(kMaxFramebuffers, fbo_); // Generate primary framebuffer
+    glGenRenderbuffers(kMaxFramebuffers, fbo_rbo_); // Generate primary RBOs
+    glGenRenderbuffers(kMaxFramebuffers, fbo_depth_buffers_); // Generate primary depth buffer
+
+    for (int i = 0; i < kMaxFramebuffers; i++) {
+        // Generate color buffer storage
+        glBindRenderbuffer(GL_RENDERBUFFER, fbo_rbo_[i]);
+        glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, VideoCore::kScreenTopWidth, 
+            VideoCore::kScreenTopHeight + VideoCore::kScreenBottomHeight);
+
+        // Generate depth buffer storage
+        glBindRenderbuffer(GL_RENDERBUFFER, fbo_depth_buffers_[i]);
+        glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT32, VideoCore::kScreenTopWidth, 
+            VideoCore::kScreenTopHeight + VideoCore::kScreenBottomHeight);
+
+        // Attach the buffers
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_[i]);
+        glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
+            GL_RENDERBUFFER, fbo_depth_buffers_[i]);
+        glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+            GL_RENDERBUFFER, fbo_rbo_[i]);
+
+        // Check for completeness
+        if (GL_FRAMEBUFFER_COMPLETE == glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER)) {
+            NOTICE_LOG(RENDER, "framebuffer(%d) initialized ok", i);
+        } else {
+            ERROR_LOG(RENDER, "couldn't create OpenGL frame buffer");
+            exit(1);
+        } 
+    }
+    glBindFramebuffer(GL_FRAMEBUFFER, 0); // Unbind our frame buffer(s)
+
+    // Initialize framebuffer textures
+    // -------------------------------
+
+    // Create XFB textures
+    glGenTextures(1, &xfb_texture_top_);  
+    glGenTextures(1, &xfb_texture_bottom_);  
+
+    // Alocate video memorry for XFB textures
+    glBindTexture(GL_TEXTURE_2D, xfb_texture_top_);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, VideoCore::kScreenTopWidth, VideoCore::kScreenTopHeight,
+        0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    glBindTexture(GL_TEXTURE_2D, xfb_texture_bottom_);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, VideoCore::kScreenTopWidth, VideoCore::kScreenTopHeight,
+        0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    // Create the FBO and attach color/depth textures
+    glGenFramebuffers(1, &xfb_top_); // Generate framebuffer
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, xfb_top_);
+    glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 
+        xfb_texture_top_, 0);
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+    glGenFramebuffers(1, &xfb_bottom_); // Generate framebuffer
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, xfb_bottom_);
+    glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 
+        xfb_texture_bottom_, 0);
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+/// Blit the FBO to the OpenGL default framebuffer
+void RendererOpenGL::RenderFramebuffer() {
+
+    // Render target is default framebuffer
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+    glViewport(0, 0, resolution_width_, resolution_height_);
+
+    // Render source is our XFB
+    glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo_[kFramebuffer_VirtualXFB]);
+    glReadBuffer(GL_COLOR_ATTACHMENT0);
+
+    // Blit
+    glBlitFramebuffer(0, 0, resolution_width_, resolution_height_, 0, 0, 
+        resolution_width_, resolution_height_, GL_COLOR_BUFFER_BIT, GL_LINEAR);
+
+    // Update the FPS count
+    UpdateFramerate();
+
+    // Rebind EFB
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo_[kFramebuffer_EFB]);
+
+    current_frame_++;
+}
+
+/// Updates the framerate
+void RendererOpenGL::UpdateFramerate() {
+}
+
+/** 
+ * Set the emulator window to use for renderer
+ * @param window EmuWindow handle to emulator window to use for rendering
+ */
+void RendererOpenGL::SetWindow(EmuWindow* window) {
+    render_window_ = window;
+}
+
+/// Initialize the renderer
+void RendererOpenGL::Init() {
+    render_window_->MakeCurrent();
+    glShadeModel(GL_SMOOTH);
+
+
+    glStencilFunc(GL_ALWAYS, 0, 0);
+    glBlendFunc(GL_ONE, GL_ONE);
+
+    glViewport(0, 0, resolution_width_, resolution_height_);
+
+    glClearDepth(1.0f);
+    glEnable(GL_DEPTH_TEST);
+    glDisable(GL_LIGHTING);
+    glDepthFunc(GL_LEQUAL);
+
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+
+    glDisable(GL_STENCIL_TEST);
+    glEnable(GL_SCISSOR_TEST);
+
+    glScissor(0, 0, resolution_width_, resolution_height_);
+    glClearDepth(1.0f);
+
+    GLenum err = glewInit();
+    if (GLEW_OK != err) {
+        ERROR_LOG(RENDER, " Failed to initialize GLEW! Error message: \"%s\". Exiting...", 
+            glewGetErrorString(err));
+        exit(-1);
+    }
+
+    // Initialize everything else
+    // --------------------------
+
+    InitFramebuffer();
+
+    NOTICE_LOG(RENDER, "GL_VERSION: %s\n", glGetString(GL_VERSION));
+}
+
+/// Shutdown the renderer
+void RendererOpenGL::ShutDown() {
+}
diff --git a/src/video_core/src/renderer_opengl/renderer_opengl.h b/src/video_core/src/renderer_opengl/renderer_opengl.h
new file mode 100644
index 000000000..b84afc5d2
--- /dev/null
+++ b/src/video_core/src/renderer_opengl/renderer_opengl.h
@@ -0,0 +1,153 @@
+/**
+ * Copyright (C) 2014 Citra Emulator
+ *
+ * @file    renderer_opengl.h
+ * @author  bunnei
+ * @date    2014-04-05
+ * @brief   Renderer for OpenGL 3.x
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#pragma once
+
+#include <GL/glew.h>
+
+
+#include "common.h"
+#include "emu_window.h"
+
+#include "renderer_base.h"
+
+
+class RendererOpenGL : virtual public RendererBase {
+public:
+
+    static const int kMaxFramebuffers = 2;  ///< Maximum number of framebuffers
+
+    RendererOpenGL();
+    ~RendererOpenGL();
+
+    /// Swap buffers (render frame)
+    void SwapBuffers();
+
+    /** 
+     * Renders external framebuffer (XFB)
+     * @param src_rect Source rectangle in XFB to copy
+     * @param dst_rect Destination rectangle in output framebuffer to copy to
+     */
+    void RenderXFB(const Rect& src_rect, const Rect& dst_rect);
+
+    /** 
+     * Blits the EFB to the external framebuffer (XFB)
+     * @param src_rect Source rectangle in EFB to copy
+     * @param dst_rect Destination rectangle in EFB to copy to
+     */
+    void CopyToXFB(const Rect& src_rect, const Rect& dst_rect);
+
+    /**
+     * Clear the screen
+     * @param rect Screen rectangle to clear
+     * @param enable_color Enable color clearing
+     * @param enable_alpha Enable alpha clearing
+     * @param enable_z Enable depth clearing
+     * @param color Clear color
+     * @param z Clear depth
+     */
+    void Clear(const Rect& rect, bool enable_color, bool enable_alpha, bool enable_z, 
+        u32 color, u32 z);
+
+    /// Sets the renderer viewport location, width, and height
+    void SetViewport(int x, int y, int width, int height);
+
+    /// Sets the renderer depthrange, znear and zfar
+    void SetDepthRange(double znear, double zfar);
+
+    /* Sets the scissor box
+     * @param rect Renderer rectangle to set scissor box to
+     */
+    void SetScissorBox(const Rect& rect);
+
+    /**
+     * Sets the line and point size
+     * @param line_width Line width to use
+     * @param point_size Point size to use
+     */
+    void SetLinePointSize(f32 line_width, f32 point_size);
+
+    /**
+     * Set a specific render mode
+     * @param flag Render flags mode to enable
+     */
+    void SetMode(kRenderMode flags);
+
+    /// Reset the full renderer API to the NULL state
+    void ResetRenderState();
+
+    /// Restore the full renderer API state - As the game set it
+    void RestoreRenderState();
+
+    /** 
+     * Set the emulator window to use for renderer
+     * @param window EmuWindow handle to emulator window to use for rendering
+     */
+    void SetWindow(EmuWindow* window);
+
+    /// Initialize the renderer
+    void Init();
+
+    /// Shutdown the renderer
+    void ShutDown();
+
+    // Framebuffer object(s)
+    // ---------------------
+
+    GLuint fbo_[kMaxFramebuffers];  ///< Framebuffer objects
+
+private:
+
+    /// Initialize the FBO
+    void InitFramebuffer();
+
+    // Blit the FBO to the OpenGL default framebuffer
+    void RenderFramebuffer();
+
+    /// Updates the framerate
+    void UpdateFramerate();
+
+    EmuWindow*  render_window_;
+    u32         last_mode_;                         ///< Last render mode
+
+    int resolution_width_;
+    int resolution_height_;
+
+    // Render buffers
+    // --------------
+
+    GLuint fbo_rbo_[kMaxFramebuffers];              ///< Render buffer objects
+    GLuint fbo_depth_buffers_[kMaxFramebuffers];    ///< Depth buffers objects
+
+    // External framebuffers
+    // ---------------------
+
+    GLuint xfb_texture_top_;                         ///< GL handle to top framebuffer texture
+    GLuint xfb_texture_bottom_;                      ///< GL handle to bottom framebuffer texture
+
+    GLuint xfb_top_;
+    GLuint xfb_bottom_;
+
+    DISALLOW_COPY_AND_ASSIGN(RendererOpenGL);
+};
\ No newline at end of file
diff --git a/src/video_core/src/utils.cpp b/src/video_core/src/utils.cpp
new file mode 100644
index 000000000..a5e702f67
--- /dev/null
+++ b/src/video_core/src/utils.cpp
@@ -0,0 +1,66 @@
+/**
+ * Copyright (C) 2005-2012 Gekko Emulator
+ *
+ * @file    utils.cpp
+ * @author  ShizZy <shizzy247@gmail.com>
+ * @date    2012-12-28
+ * @brief   Utility functions (in general, not related to emulation) useful for video core
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "utils.h"
+
+namespace VideoCore {
+
+/**
+ * Dumps a texture to TGA
+ * @param filename String filename to dump texture to
+ * @param width Width of texture in pixels
+ * @param height Height of texture in pixels
+ * @param raw_data Raw RGBA8 texture data to dump
+ * @todo This should be moved to some general purpose/common code
+ */
+void DumpTGA(std::string filename, int width, int height, u8* raw_data) {
+    TGAHeader hdr;
+    FILE* fout;
+    u8 r, g, b;
+
+    memset(&hdr, 0, sizeof(hdr));
+    hdr.datatypecode = 2; // uncompressed RGB
+    hdr.bitsperpixel = 24; // 24 bpp
+    hdr.width = width;
+    hdr.height = height;
+
+    fout = fopen(filename.c_str(), "wb");
+    fwrite(&hdr, sizeof(TGAHeader), 1, fout);
+    for (int i = 0; i < height; i++) {
+        for (int j = 0; j < width; j++) {
+            r = raw_data[(4 * (i * width)) + (4 * j) + 0];
+            g = raw_data[(4 * (i * width)) + (4 * j) + 1];
+            b = raw_data[(4 * (i * width)) + (4 * j) + 2];
+            putc(b, fout);
+            putc(g, fout);
+            putc(r, fout);
+        }
+    }
+    fclose(fout);
+}
+
+} // namespace
diff --git a/src/video_core/src/utils.h b/src/video_core/src/utils.h
new file mode 100644
index 000000000..2d7fa4a3a
--- /dev/null
+++ b/src/video_core/src/utils.h
@@ -0,0 +1,83 @@
+/**
+ * Copyright (C) 2005-2012 Gekko Emulator
+ *
+ * @file    utils.h
+ * @author  ShizZy <shizzy247@gmail.com>
+ * @date    2012-12-28
+ * @brief   Utility functions (in general, not related to emulation) useful for video core
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#pragma once
+
+#include "common_types.h"
+#include <string>
+
+namespace FormatPrecision {
+
+/// Adjust RGBA8 color with RGBA6 precision
+static inline u32 rgba8_with_rgba6(u32 src) {
+        u32 color = src;
+        color &= 0xFCFCFCFC;
+        color |= (color >> 6) & 0x03030303;
+        return color;
+}
+
+/// Adjust RGBA8 color with RGB565 precision
+static inline u32 rgba8_with_rgb565(u32 src) {
+        u32 color = (src & 0xF8FCF8);
+        color |= (color >> 5) & 0x070007;
+        color |= (color >> 6) & 0x000300;
+        color |= 0xFF000000;
+        return color;
+}
+
+/// Adjust Z24 depth value with Z16 precision
+static inline u32 z24_with_z16(u32 src) {
+        return (src & 0xFFFF00) | (src >> 16);
+}
+
+} // namespace
+
+namespace VideoCore {
+
+/// Structure for the TGA texture format (for dumping)
+struct TGAHeader {
+    char  idlength;
+    char  colourmaptype;
+    char  datatypecode;
+    short int colourmaporigin;
+    short int colourmaplength;
+    short int x_origin;
+    short int y_origin;
+    short width;
+    short height;
+    char  bitsperpixel;
+    char  imagedescriptor;
+};
+
+/**
+ * Dumps a texture to TGA
+ * @param filename String filename to dump texture to
+ * @param width Width of texture in pixels
+ * @param height Height of texture in pixels
+ * @param raw_data Raw RGBA8 texture data to dump
+ * @todo This should be moved to some general purpose/common code
+ */
+void DumpTGA(std::string filename, int width, int height, u8* raw_data);
+
+} // namespace
diff --git a/src/video_core/src/video_core.cpp b/src/video_core/src/video_core.cpp
new file mode 100644
index 000000000..52ff90488
--- /dev/null
+++ b/src/video_core/src/video_core.cpp
@@ -0,0 +1,88 @@
+/**
+ * Copyright (C) 2014 Citra Emulator
+ *
+ * @file    video_core.cpp
+ * @author  bunnei
+ * @date    2014-04-05
+ * @brief   Main module for new video core
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#include "common.h"
+#include "emu_window.h"
+#include "log.h"
+
+#include "core.h"
+
+#include "video_core.h"
+#include "renderer_base.h"
+#include "renderer_opengl/renderer_opengl.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Video Core namespace
+
+namespace VideoCore {
+
+EmuWindow*      g_emu_window    = NULL;     ///< Frontend emulator window
+RendererBase*   g_renderer      = NULL;     ///< Renderer plugin
+int             g_current_frame = 0;
+
+int VideoEntry(void*) {
+    if (g_emu_window == NULL) {
+        ERROR_LOG(VIDEO, "VideoCore::VideoEntry called without calling Init()!");
+    }
+    g_emu_window->MakeCurrent();
+    //for(;;) {
+    //    gp::Fifo_DecodeCommand();
+    //}
+    return 0;
+}
+
+/// Start the video core
+void Start() {
+    if (g_emu_window == NULL) {
+        ERROR_LOG(VIDEO, "VideoCore::Start called without calling Init()!");
+    }
+    //if (common::g_config->enable_multicore()) {
+    //    g_emu_window->DoneCurrent();
+    //    g_video_thread = SDL_CreateThread(VideoEntry, NULL, NULL);
+    //    if (g_video_thread == NULL) {
+    //        LOG_ERROR(TVIDEO, "Unable to create thread: %s... Exiting\n", SDL_GetError());
+    //        exit(1);
+    //    }
+    //}
+}
+
+/// Initialize the video core
+void Init(EmuWindow* emu_window) {
+    g_emu_window = emu_window;
+    g_emu_window->MakeCurrent();
+    g_renderer = new RendererOpenGL();
+    g_renderer->SetWindow(g_emu_window);
+    g_renderer->Init();
+
+    g_current_frame = 0;
+
+    NOTICE_LOG(VIDEO, "initialized ok");
+}
+
+/// Shutdown the video core
+void Shutdown() {
+    delete g_renderer;
+}
+
+} // namespace
diff --git a/src/video_core/src/video_core.h b/src/video_core/src/video_core.h
new file mode 100644
index 000000000..10b8f1105
--- /dev/null
+++ b/src/video_core/src/video_core.h
@@ -0,0 +1,59 @@
+/*!
+ * Copyright (C) 2014 Citra Emulator
+ *
+ * @file    video_core.h
+ * @author  bunnei
+ * @date    2014-04-05
+ * @brief   Main module for new video core
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#pragma once
+
+#include "common.h"
+#include "emu_window.h"
+#include "renderer_base.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Video Core namespace
+
+namespace VideoCore {
+
+// 3DS Video Constants
+// -------------------
+
+static const int kScreenTopWidth        = 400;  ///< 3DS top screen width
+static const int kScreenTopHeight       = 240;  ///< 3DS top screen height
+static const int kScreenBottomWidth     = 320;  ///< 3DS bottom screen width
+static const int kScreenBottomHeight    = 240;  ///< 3DS bottom screen height
+
+//  Video core renderer
+// ---------------------
+
+extern RendererBase*   g_renderer;              ///< Renderer plugin
+extern int             g_current_frame;         ///< Current frame
+
+/// Start the video core
+void Start();
+
+/// Initialize the video core
+void Init(EmuWindow* emu_window);
+
+/// Shutdown the video core
+void Shutdown();
+
+} // namespace
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new file mode 100644
index 000000000..5c56e9b71
--- /dev/null
+++ b/src/video_core/video_core.vcxproj
@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="src\renderer_opengl\renderer_opengl.cpp" />
+    <ClCompile Include="src\utils.cpp" />
+    <ClCompile Include="src\video_core.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="src\renderer_base.h" />
+    <ClInclude Include="src\renderer_opengl\renderer_opengl.h" />
+    <ClInclude Include="src\utils.h" />
+    <ClInclude Include="src\video_core.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="CMakeLists.txt" />
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{6678D1A3-33A6-48A9-878B-48E5D2903D27}</ProjectGuid>
+    <RootNamespace>input_common</RootNamespace>
+    <ProjectName>video_core</ProjectName>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
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+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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+    <Import Project="..\..\vsprops\code_generation_debug.props" />
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+</Project>
\ No newline at end of file
diff --git a/src/video_core/video_core.vcxproj.filters b/src/video_core/video_core.vcxproj.filters
new file mode 100644
index 000000000..e796fbe21
--- /dev/null
+++ b/src/video_core/video_core.vcxproj.filters
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClCompile Include="src\video_core.cpp" />
+    <ClCompile Include="src\utils.cpp" />
+    <ClCompile Include="src\renderer_opengl\renderer_opengl.cpp">
+      <Filter>renderer_opengl</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="src\renderer_base.h" />
+    <ClInclude Include="src\video_core.h" />
+    <ClInclude Include="src\utils.h" />
+    <ClInclude Include="src\renderer_opengl\renderer_opengl.h">
+      <Filter>renderer_opengl</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="CMakeLists.txt" />
+  </ItemGroup>
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+      <UniqueIdentifier>{e0245557-dbd4-423e-9399-513d5e99f1e4}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+</Project>
\ No newline at end of file