opengl_learn

commit a41f4379ea5729069c98db69616eb8a42772322a
parent 0e6c9099c9414a8108e85d9228aac2d96907ba79
Author: David DiPaola <DavidDiPaola@users.noreply.github.com>
Date:   Sat,  6 Oct 2018 09:10:23 -0400

ogl: added comments to warn readers not use legacy OpenGL calls

Diffstat:
M
ogl/ogl_lookat.c
 | 
3
++-
M
ogl/ogl_mat4f_scale.c
 | 
1
+
M
ogl/ogl_mat4f_translate.c
 | 
1
+

3 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/ogl/ogl_lookat.c b/ogl/ogl_lookat.c
@@ -14,7 +14,8 @@ ogl_lookat(
 ) {
 	/* equivelant to gluLookAt() followed by glTranslatef(). see: https://www.opengl.org/discussion_boards/showthread.php/130409-using-gluLookAt-properly */
 	/* see OpenGL 2.1 gluLookAt(): https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/gluLookAt.xml */
-	/* see OpenGL 2.1 glTranslatef(): https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glTranslate.xml */
+	/* see OpenGL 2.1 glTranslate(): https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glTranslate.xml */
+	/* note: gluLookAt() and glTranslate() were deprecated, then removed from later OpenGL versions. don't use them */
 
 	struct ogl_vec3f f = {
 		.x = center.x - eye.x,
diff --git a/ogl/ogl_mat4f_scale.c b/ogl/ogl_mat4f_scale.c
@@ -11,6 +11,7 @@ ogl_mat4f_scale(
 	struct ogl_mat4f * out_result
 ) {
 	/* see OpenGL 2.1 glScale(): https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glScale.xml */
+	/* note: glScale() was deprecated, then removed from later OpenGL versions. don't use it */
 
 	struct ogl_mat4f scale_matrix = { .values = {
 		scale.x, 0.0f,    0.0f,    0.0f,
diff --git a/ogl/ogl_mat4f_translate.c b/ogl/ogl_mat4f_translate.c
@@ -11,6 +11,7 @@ ogl_mat4f_translate(
 	struct ogl_mat4f * out_result
 ) {
 	/* see OpenGL 2.1 glTranslate(): https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glTranslate.xml */
+	/* note: glTranslate() was deprecated, then removed from later OpenGL versions. don't use it */
 
 	struct ogl_mat4f translation_matrix = { .values = {
 		1.0f, 0.0f, 0.0f, translation.x,