imgui + renderer + mouse scroll

Added scissor mode in renderer
Added scissor support in imGui
Mouse scroll sensivity tweak

src/gpu/rendercontext.cpp

@@ -59,6 +59,8 @@ private:
     TrackedState<DepthMask> m_depth_mask;
     TrackedState<CullMode> m_cull_mode;
     TrackedState<PolygonMode> m_polygon_mode;
+    TrackedState<ScissorMode> m_scissor_mode;
+    TrackedState<vec4> m_scissor_rect;
 };
 
 /*
@@ -101,6 +103,9 @@ RenderContext::~RenderContext()
     if (m_data->m_polygon_mode.HasChanged())
         Renderer::Get()->SetPolygonMode(m_data->m_polygon_mode.GetValue());
 
+    if (m_data->m_scissor_mode.HasChanged())
+        Renderer::Get()->SetScissorMode(m_data->m_scissor_mode.GetValue());
+
     delete m_data;
 }
 
@@ -255,5 +260,31 @@ PolygonMode RenderContext::GetPolygonMode()
     return Renderer::Get()->GetPolygonMode();
 }
 
+void RenderContext::SetScissorMode(ScissorMode mode)
+{
+    if (!m_data->m_scissor_mode.HasChanged())
+        m_data->m_scissor_mode.TrackValue(Renderer::Get()->GetScissorMode());
+
+    Renderer::Get()->SetScissorMode(mode);
+}
+
+void RenderContext::SetScissorRect(vec4 rect)
+{
+    if (!m_data->m_scissor_rect.HasChanged())
+        m_data->m_scissor_rect.TrackValue(Renderer::Get()->GetScissorRect());
+
+    Renderer::Get()->SetScissorRect(rect);
+}
+
+ScissorMode RenderContext::GetScissorMode()
+{
+    return Renderer::Get()->GetScissorMode();
+}
+
+vec4 RenderContext::GetScissorRect()
+{
+    return Renderer::Get()->GetScissorRect();
+}
+
 } /* namespace lol */
 

src/gpu/renderer.cpp

@@ -54,6 +54,8 @@ private:
     DepthMask m_depth_mask;
     CullMode m_cull_mode;
     PolygonMode m_polygon_mode;
+    ScissorMode m_scissor_mode;
+    vec4 m_scissor_rect;
 };
 
 /*
@@ -107,6 +109,9 @@ Renderer::Renderer(ivec2 size)
     m_data->m_polygon_mode = PolygonMode::Point;
     SetPolygonMode(PolygonMode::Fill);
 
+    m_data->m_scissor_mode = ScissorMode::Disabled;
+    SetPolygonMode(PolygonMode::Fill);
+
     /* Add some rendering states that we don't export to the user */
 #if defined HAVE_GL_2X && !defined __APPLE__
     glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
@@ -548,5 +553,42 @@ PolygonMode Renderer::GetPolygonMode() const
     return m_data->m_polygon_mode;
 }
 
+/*
+* Scissor test mode
+*/
+
+void Renderer::SetScissorMode(ScissorMode mode)
+{
+    if (m_data->m_scissor_mode == mode)
+        return;
+
+    if (mode == ScissorMode::Enabled)
+        glEnable(GL_SCISSOR_TEST);
+    else
+        glDisable(GL_SCISSOR_TEST);
+
+    m_data->m_scissor_mode = mode;
+}
+
+void Renderer::SetScissorRect(vec4 rect)
+{
+    m_data->m_scissor_rect = rect;
+    if (m_data->m_scissor_mode == ScissorMode::Enabled)
+    {
+        glScissor((int)rect.x, (int)Video::GetSize().y - rect.w, (int)(rect.z - rect.x), (int)(rect.w - rect.y));
+        //glScissor((int)rect.x, (int)rect.y, (int)(rect.z - rect.x), (int)(rect.w - rect.y));
+    }
+}
+
+ScissorMode Renderer::GetScissorMode() const
+{
+    return m_data->m_scissor_mode;
+}
+
+vec4 Renderer::GetScissorRect() const
+{
+    return m_data->m_scissor_rect;
+}
+
 } /* namespace lol */
 

src/input/input.cpp

@@ -114,7 +114,7 @@ InputDeviceInternal* InputDeviceInternal::CreateStandardMouse()
     mouse->AddAxis(g_name_mouse_axis_y.C());
     mouse->AddAxis(g_name_mouse_axis_xpixel.C());
     mouse->AddAxis(g_name_mouse_axis_ypixel.C());
-    mouse->AddAxis(g_name_mouse_axis_scroll.C());
+    mouse->AddAxis(g_name_mouse_axis_scroll.C(), .0000001f);
 
     mouse->AddCursor(g_name_mouse_cursor.C());
 

src/lol/gpu/rendercontext.h

@@ -36,6 +36,8 @@ public:
     void SetDepthMask(DepthMask mask);
     void SetCullMode(CullMode mode);
     void SetPolygonMode(PolygonMode mode);
+    void SetScissorMode(ScissorMode mode);
+    void SetScissorRect(vec4 rect);
 
     ibox2 GetViewport();
     vec4 GetClearColor();
@@ -50,6 +52,8 @@ public:
     DepthMask GetDepthMask();
     CullMode GetCullMode();
     PolygonMode GetPolygonMode();
+    ScissorMode GetScissorMode();
+    vec4 GetScissorRect();
 
 private:
     RenderContextData *m_data;

src/lol/gpu/renderer.h

@@ -123,6 +123,13 @@ enum class AlphaFunc : uint8_t
     Always,
 };
 
+/* A safe enum to indicate the depth mask. */
+enum class ScissorMode : uint8_t
+{
+    Disabled,
+    Enabled,
+};
+
 class Renderer
 {
 private:
@@ -176,6 +183,11 @@ public:
     void SetPolygonMode(PolygonMode mode);
     PolygonMode GetPolygonMode() const;
 
+    void SetScissorMode(ScissorMode mode);
+    void SetScissorRect(vec4 rect);
+    ScissorMode GetScissorMode() const;
+    vec4 GetScissorRect() const;
+
 private:
     RendererData *m_data;
 };

src/lolimgui.cpp

@@ -366,6 +366,7 @@ void LolImGui::RenderDrawListsMethod(ImDrawData* draw_data)
     RenderContext rc;
     rc.SetCullMode(CullMode::Disabled);
     rc.SetDepthFunc(DepthFunc::Disabled);
+    rc.SetScissorMode(ScissorMode::Enabled);
 
     m_shader->Bind();
     for (int n = 0; n < draw_data->CmdListsCount; n++)
@@ -402,6 +403,11 @@ void LolImGui::RenderDrawListsMethod(ImDrawData* draw_data)
         for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
         {
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[(int)cmd_i];
+            TextureImage* image = (TextureImage*)pcmd->TextureId;
+            if (image) image->Bind();
+
+            rc.SetScissorRect(vec4(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z, pcmd->ClipRect.w));
+
 #ifdef SHOW_IMGUI_DEBUG
             //-----------------------------------------------------------------
             //<Debug render> --------------------------------------------------
@@ -448,6 +454,8 @@ void LolImGui::RenderDrawListsMethod(ImDrawData* draw_data)
             m_vdecl->DrawIndexedElements(MeshPrimitive::Triangles, pcmd->ElemCount, (const short*)idx_buffer_offset);
 
             idx_buffer_offset += pcmd->ElemCount;
+
+            if (image) image->Unbind();
         }
 
         m_vdecl->Unbind();