X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=xerebus%2Fsrc%2Fmain.c;h=e7c07283de6f98c08dff8fc53fdc7ac073079274;hb=d4eaf9f47882dc99d6523b8464dcaa1cc2789f26;hp=3fed7e60ca234b92048f733711dcc95f33b4f413;hpb=c8b13dff969d8104c178d9362aa21cefb9d61fe8;p=erebus2020

diff --git a/xerebus/src/main.c b/xerebus/src/main.c
index 3fed7e6..e7c0728 100644
--- a/xerebus/src/main.c
+++ b/xerebus/src/main.c
@@ -1,6 +1,161 @@
 #include <stdio.h>
+#include "miniglut.h"
+#include "erebus.h"
+
+static void display(void);
+static void reshape(int x, int y);
+static void keyb(unsigned char key, int x, int y);
+static void mouse(int bn, int st, int x, int y);
+static void motion(int x, int y);
+
+static int win_width, win_height;
+static float win_aspect;
+static int reshape_pending;
+
+static struct erb_rend *erb;
+
+static int mouse_x, mouse_y;
+static int drag_x, drag_y;
+static int drag;
+
+static unsigned int fbtex;
 
 int main(int argc, char **argv)
 {
+	glutInit(&argc, argv);
+	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
+	glutInitWindowSize(1280, 800);
+	glutCreateWindow("X erebus");
+
+	glutDisplayFunc(display);
+	glutReshapeFunc(reshape);
+	glutKeyboardFunc(keyb);
+	glutMouseFunc(mouse);
+	glutMotionFunc(motion);
+
+	if(!(erb = erb_create())) {
+		return 1;
+	}
+	reshape_pending = 1;
+
+	glGenTextures(1, &fbtex);
+	glBindTexture(GL_TEXTURE_2D, fbtex);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glEnable(GL_TEXTURE_2D);
+
+	glutMainLoop();
+	erb_destroy(erb);
 	return 0;
 }
+
+static void display(void)
+{
+	if(reshape_pending) {
+		reshape_pending = 0;
+
+		erb_allocframe(erb, win_width, win_height);
+		erb_begin(erb);
+
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, win_width, win_height, 0,
+				GL_RGBA, GL_FLOAT, erb_getframe(erb));
+	} else {
+		glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, win_width, win_height,
+				GL_RGBA, GL_FLOAT, erb_getframe(erb));
+	}
+	/* TODO: continue with getting notified when a block is done rendering */
+
+
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glBegin(GL_QUADS);
+	glColor3f(1, 1, 1);
+	glTexCoord2f(0, 0);
+	glVertex2f(0, 0);
+	glTexCoord2f(1, 0);
+	glVertex2f(win_width, 0);
+	glTexCoord2f(1, 1);
+	glVertex2f(win_width, win_height);
+	glTexCoord2f(0, 1);
+	glVertex2f(0, win_height);
+	glEnd();
+
+	if(drag) {
+		glPushAttrib(GL_ENABLE_BIT);
+		glDisable(GL_TEXTURE_2D);
+		glEnable(GL_LOGIC_OP);
+		glLogicOp(GL_XOR);
+
+		glBegin(GL_LINE_LOOP);
+		glColor3f(1, 1, 1);
+		glVertex2f(drag_x, drag_y);
+		glVertex2f(mouse_x, drag_y);
+		glVertex2f(mouse_x, mouse_y);
+		glVertex2f(drag_x, mouse_y);
+		glEnd();
+
+		glPopAttrib();
+	}
+
+	glutSwapBuffers();
+}
+
+static void reshape(int x, int y)
+{
+	win_width = x;
+	win_height = y;
+	win_aspect = (float)x / (float)y;
+
+	glViewport(0, 0, x, y);
+
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	glOrtho(0, x, y, 0, -1, 1);
+
+	reshape_pending = 1;
+	glutPostRedisplay();
+}
+
+static void keyb(unsigned char key, int x, int y)
+{
+	if(key == 27) {
+		glutExit();
+	}
+	glutPostRedisplay();
+}
+
+static void mouse(int bn, int st, int x, int y)
+{
+	int rect[4];
+
+	mouse_x = x;
+	mouse_y = y;
+
+	if(bn == 0) {
+		if(st == GLUT_DOWN) {
+			drag = 1;
+			drag_x = x;
+			drag_y = y;
+		} else {
+			drag = 0;
+
+			rect[0] = x < drag_x ? x : drag_x;
+			rect[1] = y < drag_y ? y : drag_y;
+			rect[2] = abs(x - drag_x);
+			rect[3] = abs(y - drag_y);
+
+			erb_queue_block(erb, rect[0], rect[1], rect[2], rect[3]);
+			printf("rect: %d,%d %dx%d\n", rect[0], rect[1], rect[2], rect[3]);
+		}
+
+		glutPostRedisplay();
+	}
+}
+
+static void motion(int x, int y)
+{
+	mouse_x = x;
+	mouse_y = y;
+
+	glutPostRedisplay();
+}