Added basic window creation.

Author: Databean

.gitignore

@@ -11,3 +11,5 @@
 *.lai
 *.la
 *.a
+
+checkers-spike

Makefile

@@ -0,0 +1,16 @@
+export OBJ_HOME := $(realpath obj)
+export SRC_HOME := $(realpath src)
+export INCL_HOME := $(realpath include)
+EXECUTABLE := checkers-spike
+ALLFILES := $(wildcard $(SRC_HOME)/*) $(wildcard $(INCL_HOME)/*)
+export CXX := g++ -c
+export LD := g++
+export CXXFLAGS := -g -I$(INCL_HOME) -std=gnu++0x
+export LDFLAGS := -lSDL2 -lGL -lGLU
+
+.PHONY: all
+all: $(EXECUTABLE)
+
+$(EXECUTABLE): $(ALLFILES)
+	cd src && $(MAKE)
+	${LD} obj/*.o $(LDFLAGS) -o $(EXECUTABLE)

obj/.keepthis

@@ -0,0 +1,9 @@
+SOURCES := $(wildcard *.cpp)
+OBJECTS := $(addprefix $(OBJ_HOME)/, $(SOURCES:.cpp=.o))
+HEADERS := $(wildcard $(INCL_HOME)/*.h)
+
+.PHONY: main 
+main: $(OBJECTS)
+
+$(OBJ_HOME)/%.o: %.cpp $(HEADERS)
+	$(CXX) $(CXXFLAGS) $< -o $@

src/Makefile

@@ -0,0 +1,59 @@
+#include <iostream>
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_opengl.h>
+
+
+void initOpenGL() {
+	glEnable(GL_DEPTH_TEST);
+	glEnable(GL_TEXTURE_2D);
+	glEnable (GL_BLEND); 
+	glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+}
+
+/* function to reset our viewport after a window resize */
+int updateViewport( int width, int height ) {
+	glViewport(0, 0, (GLsizei) w, (GLsizei) h); 
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity ();
+	gluOrtho2D(0, 1, 0, 1);
+	
+	glMatrixMode(GL_MODELVIEW);
+}
+
+void render(SDL_Renderer* displayRenderer) {
+	
+	
+	SDL_RenderPresent(displayRenderer);
+}
+
+
+int
+main(int argc, char *argv[])
+{
+	SDL_Init(SDL_INIT_VIDEO);
+	SDL_Window* displayWindow;
+	SDL_Renderer* displayRenderer;
+	SDL_RendererInfo displayRendererInfo;
+	SDL_CreateWindowAndRenderer(800, 600, SDL_WINDOW_OPENGL, &displayWindow, &displayRenderer);
+	SDL_GetRendererInfo(displayRenderer, &displayRendererInfo);
+	/*TODO: Check that we have OpenGL */
+	if ((displayRendererInfo.flags & SDL_RENDERER_ACCELERATED) == 0 || 
+		(displayRendererInfo.flags & SDL_RENDERER_TARGETTEXTURE) == 0) {
+		/*TODO: Handle this. We have no render surface and not accelerated. */
+		std::cout << "Unable to create a window using accelerated graphics." << std::endl;
+	}
+	
+	
+	initOpenGL();
+
+	updateViewport(800, 600);
+	
+	render(displayRenderer);
+	
+	
+	SDL_Delay(5000);
+	SDL_Quit();
+	
+	return 0;
+}