bgl/BGE: glCopyTexImage2D + bgl.buffer creation error more verbose + dome post_draw (it draw only for the last overlayed scene)

1) glCopyTexImage2D - www.opengl.org/sdk/docs/man/xhtml/glCopyTexImage2D.xml

2) dome post_draw. Now dome mode can also use scene.post_draw. It only runs for the last scene. It's really useful. I'm working on a nice showcase for this (a dome visualizer for the dome mode running with bgl. In the mean time this is a (lame) example of both working together (the buffer is being copied and draw on top of the window):
http://blenderecia.orgfree.com/blender/tmp/dome_bgl_copytex2d.jpg

2 files changed, 34 insertions, 1 deletions

diff --git a/source/blender/python/doc/epy/BGL.py b/source/blender/python/doc/epy/BGL.py
index b054e762273..ce148dc72ba 100644
--- a/source/blender/python/doc/epy/BGL.py
+++ b/source/blender/python/doc/epy/BGL.py
@@ -318,6 +318,34 @@ def glCopyPixels(x, y, width, height, type):
   @type type: Enumerated constant
   @param type: Specifies whether color values, depth values, or stencil values are to be copied. 
   """
+  
+  def glCopyTexImage2D(target, level, internalformat, x, y, width, height, border):
+  """
+  Copy pixels into a 2D texture image
+  @see: U{www.opengl.org/sdk/docs/man/xhtml/glCopyTexImage2D.xml}
+
+  @type target: Enumerated constant
+  @param target: Specifies the target texture. 
+  @type level: int
+  @param level: Specifies the level-of-detail number. Level 0 is the base image level. 
+  Level n is the nth mipmap reduction image. 
+  @type internalformat: int
+  @param internalformat: Specifies the number of color components in the texture. 
+  @type width: int
+  @type x, y: int
+  @param x, y:Specify the window coordinates of the first pixel that is copied 
+  from the frame buffer. This location is the lower left corner of a rectangular
+  block of pixels.
+  @param width: Specifies the width of the texture image. Must be 2n+2(border) for 
+  some integer n. All implementations support texture images that are at least 64 
+  texels wide. 
+  @type height: int
+  @param height: Specifies the height of the texture image. Must be 2m+2(border) for 
+  some integer m. All implementations support texture images that are at least 64 
+  texels high. 
+  @type border: int
+  @param border: Specifies the width of the border. Must be either 0 or 1. 
+  """
 
 def glCullFace(mode):
   """
diff --git a/source/blender/python/generic/bgl.c b/source/blender/python/generic/bgl.c
index 2ca84f3a311..63c518c8721 100644
--- a/source/blender/python/generic/bgl.c
+++ b/source/blender/python/generic/bgl.c
@@ -355,7 +355,10 @@ static int Buffer_ass_slice(PyObject *self, int begin, int end, PyObject *seq)
 	}
 
 	if (PySequence_Length(seq)!=(end-begin)) {
-		PyErr_SetString(PyExc_TypeError, "size mismatch in assignment");
+		int seq_len = PySequence_Length(seq);
+		char err_str[128];
+		sprintf(err_str, "size mismatch in assignment. Expected size: %d (size provided: %d)", seq_len, (end-begin));
+		PyErr_SetString(PyExc_TypeError, err_str);
 		return -1;
 	}
 	
@@ -476,6 +479,7 @@ BGL_Wrap(1, Color4usv,        void,     (GLushortP))
 BGL_Wrap(4, ColorMask,        void,     (GLboolean, GLboolean, GLboolean, GLboolean))
 BGL_Wrap(2, ColorMaterial,    void,     (GLenum, GLenum))
 BGL_Wrap(5, CopyPixels,       void,     (GLint, GLint, GLsizei, GLsizei, GLenum))
+BGL_Wrap(8, CopyTexImage2D,   void,     (GLenum, GLint, GLenum, GLint, GLint, GLsizei, GLsizei, GLint))
 BGL_Wrap(1, CullFace,         void,     (GLenum))
 BGL_Wrap(2, DeleteLists,      void,     (GLuint, GLsizei))
 BGL_Wrap(2, DeleteTextures,   void,   (GLsizei, GLuintP))
@@ -819,6 +823,7 @@ static struct PyMethodDef BGL_methods[] = {
 	MethodDef(ColorMask),
 	MethodDef(ColorMaterial),
 	MethodDef(CopyPixels),
+	MethodDef(CopyTexImage2D),
 	MethodDef(CullFace),
 	MethodDef(DeleteLists),
 	MethodDef(DeleteTextures),