diff options
Diffstat (limited to 'src/jogl/classes/javax/media/opengl/GLContext.java')
| -rw-r--r-- | src/jogl/classes/javax/media/opengl/GLContext.java | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/jogl/classes/javax/media/opengl/GLContext.java b/src/jogl/classes/javax/media/opengl/GLContext.java index de10a2815..235003c38 100644 --- a/src/jogl/classes/javax/media/opengl/GLContext.java +++ b/src/jogl/classes/javax/media/opengl/GLContext.java @@ -970,6 +970,32 @@ public abstract class GLContext { */ public abstract int getDefaultReadFramebuffer(); + /** + * Returns the default color buffer within the current bound + * {@link #getDefaultReadFramebuffer()}, i.e. GL_READ_FRAMEBUFFER​, + * which will be used as the source for pixel reading commands, + * like {@link GL#glReadPixels(int, int, int, int, int, int, java.nio.Buffer)} etc. + * <p> + * For offscreen framebuffer objects this is {@link GL#GL_COLOR_ATTACHMENT0}, + * otherwise this is {@link GL#GL_FRONT} for single buffer configurations + * and {@link GL#GL_BACK} for double buffer configurations. + * </p> + */ + public abstract int getDefaultReadBuffer(); + + /** On some platforms the mismatch between OpenGL's coordinate + system (origin at bottom left) and the window system's + coordinate system (origin at top left) necessitates a vertical + flip of pixels read from offscreen contexts. + <p> + Default impl. is <code>true</code>. + </p> + */ + public abstract boolean isGLOrientationFlippedVertical(); + + /** Get the default pixel data type, as required by e.g. {@link GL#glReadPixels(int, int, int, int, int, int, java.nio.Buffer)}. */ + public abstract int getDefaultPixelDataType(); + /** * @return The extension implementing the GLDebugOutput feature, * either <i>GL_ARB_debug_output</i> or <i>GL_AMD_debug_output</i>. |