X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fscreen.h;h=f66c7aa762e140c5d5d4b7798155b982f9945a2f;hp=44dd2c723be7ea089fdc962c4c7bd8a826bc2571;hb=b8c16a21a8f59ff8cde6bb546cc44a6fc422c2b7;hpb=b1786b24148036a4d9402cc12ea97466072e988d

diff --git a/src/screen.h b/src/screen.h
index 44dd2c7..f66c7aa 100644
--- 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
 {
 	/*
@@ -30,6 +34,12 @@ namespace IPDF
 		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;
 		void SetMouseHandler(MouseHandler handler)
@@ -49,17 +59,40 @@ namespace IPDF
 
 		void ScreenShot(const char * filename) const;
 		void RenderBMP(const char * filename) 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;
+		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;
 	};
 
 }