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-rw-r--r--sdl/GL_notes.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/sdl/GL_notes.txt b/sdl/GL_notes.txt
index 0a19bbb..23795e9 100644
--- a/sdl/GL_notes.txt
+++ b/sdl/GL_notes.txt
@@ -75,3 +75,9 @@ Vertex Shader--you can write code for tasks such as:
- Lighting per vertex or computing values for lighting per pixel
- Color computation
+Fixed Functionality Pipeline
+- glTranslatef: can be mimicked by building m3dTranslationMatrix44f
+- glRotatef: can be mimicked by building m3dRotationMatrix44f
+- Both of the matrices can be combined by multiplying them, and loaded by using glLoadMatrixf,
+ but more efficient way is to let OpenGL do the multiplication for you by using glMultMatrixf
+