Fix RenderPixels, CPU rendering "works"

[ipdf/code.git] / src / screen.h

diff --git a/src/screen.h b/src/screen.h
index 8452efc..a034d2a 100644 (file)
--- a/src/screen.h
+++ b/src/screen.h
@@ -5,6 +5,10 @@
 
 #include <functional>
 
+#include "stb_truetype.h"
+#include "graphicsbuffer.h"
+#include "shaderprogram.h"
+
 namespace IPDF
 {
        /*
@@ -20,12 +24,21 @@ namespace IPDF
                // Returns 'false' if the program should quit.
                bool PumpEvents();
 
+               // Clears the screen to a given colour.
+               void Clear(float r=1.0, float g=1.0, float b=1.0, float a=1.0);
+
                // Finishes rendering a frame, and presents it on the screen.
                void Present();
 
                // Get the current width/height of the window's viewport.
-               int ViewportWidth() { return m_viewport_width; }
-               int ViewportHeight() { return m_viewport_height; }
+               int ViewportWidth() const { return m_viewport_width; }
+               int ViewportHeight() const { return m_viewport_height; }
+               
+               // Debug Font handling
+               void DebugFontInit(const char *font_name, float font_size = 12);
+               void DebugFontClear();
+               void DebugFontPrint(const char *str);
+               void DebugFontPrintF(const char *fmt, ...);
                
                // Handle mouse input.
                typedef std::function<void(int x, int y, int button, int wheel)> MouseHandler;
@@ -43,15 +56,46 @@ namespace IPDF
                        CursorHand
                };
                void SetMouseCursor(MouseCursors cursor);
+
+               void ScreenShot(const char * filename) const;
+               void RenderBMP(const char * filename) const;
+               void RenderPixels(int x, int y, int w, int h, uint8_t * pixels) const;
+
+
+               // Returns the CPU time (in seconds) it took to render the last completed frame.
+               double GetLastFrameTimeCPU() const { return m_last_frame_time / SDL_GetPerformanceFrequency(); }
+               // Returns the GPU time (in seconds) it took to render the last completed frame.
+               double GetLastFrameTimeGPU() const;
        private:
                void ResizeViewport(int width, int height);
+               void DebugFontFlush();
                
                MouseHandler m_mouse_handler;
+               int m_last_mouse_x;
+               int m_last_mouse_y;
+
+               double m_last_frame_time;
+               double m_frame_begin_time;
+               GLuint m_frame_gpu_timer;
+               GLuint m_last_frame_gpu_timer;
 
                int m_viewport_width;
                int m_viewport_height;
                SDL_Window *m_window;
                SDL_GLContext m_gl_context;
+               ShaderProgram m_texture_prog;
+               ShaderProgram m_font_prog;
+               GLint m_colour_uniform_location;
+               GraphicsBuffer m_viewport_ubo;
+               stbtt_bakedchar m_debug_font_rects[96];
+               unsigned int m_debug_font_atlas;
+               float m_debug_font_x;
+               float m_debug_font_y;
+               float m_debug_font_size;
+               GraphicsBuffer m_debug_font_vertices;
+               GraphicsBuffer m_debug_font_indices;
+               int m_debug_font_vertex_head;
+               int m_debug_font_index_head;
        };
 
 }