Text rendering framework (foundation)

git-svn-id: svn://cook.msm.cam.ac.uk:745/thrust3d/thrust3d@68 84d2e878-0bd5-11dd-ad15-13eda11d74c5

1 files changed, 52 insertions, 0 deletions

diff --git a/src/render-text.c b/src/render-text.c
new file mode 100644
index 0000000..710837f
--- /dev/null
+++ b/src/render-text.c
@@ -0,0 +1,52 @@
+/*
+ * render-text.c
+ *
+ * Simple text rendering
+ *
+ * (c) 2008 Thomas White <taw27@cam.ac.uk>
+ *
+ *  thrust3d - a silly game
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <png.h>
+#include <stdlib.h>
+#include <glew.h>
+
+#include "render.h"
+#include "texture.h"
+
+void render_text_setup(RenderContext *r) {
+
+	texture_load(r, "font");
+
+}
+
+void render_text_write(GLfloat x, GLfloat y, const char *text, RenderContext *r) {
+
+	Texture *texture;
+	
+	texture = texture_lookup(r, "font");
+	glBindTexture(GL_TEXTURE_2D, texture->texname);
+	glEnable(GL_TEXTURE_2D);
+	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+	glBegin(GL_QUADS);
+		glTexCoord2f(0.0, 0.0);
+		glVertex2f(x, y);
+		glTexCoord2f(1.0, 0.0);
+		glVertex2f(x+0.1, y);
+		glTexCoord2f(1.0, 1.0);
+		glVertex2f(x+0.1, y+0.1);
+		glTexCoord2f(0.0, 1.0);
+		glVertex2f(x, y+0.1);
+	glEnd();
+	
+	glDisable(GL_TEXTURE_2D);
+
+}
+