py docs - gpu module wasn't included in docs.

also added convenience target to build sphinx api docs:
 make doc_py

GNUmakefile

@@ -145,6 +145,9 @@ help:
 	@echo "  * check_splint    - run blenders source through splint (C only)"
 	@echo "  * check_sparse    - run blenders source through sparse (C only)"
 	@echo ""
+	@echo "Documentation Targets"
+	@echo "  * doc_py   - generate sphinx python api docs"
+	@echo ""
 
 # -----------------------------------------------------------------------------
 # Packages
@@ -222,6 +225,17 @@ check_sparse:
 	cd $(BUILD_DIR) ; python3 $(BLENDER_DIR)/build_files/cmake/cmake_static_check_sparse.py
 
 
+# -----------------------------------------------------------------------------
+# Documentation
+#
+
+# Simple version of ./doc/python_api/sphinx_doc_gen.sh with no PDF generation.
+doc_py:
+	$(BUILD_DIR)/bin/blender --background --factory-startup --python doc/python_api/sphinx_doc_gen.py
+	cd doc/python_api ; sphinx-build -n -b html sphinx-in sphinx-out
+	@echo "docs written into: 'doc/python_api/sphinx-out/index.html'"
+
+
 clean:
 	$(MAKE) -C $(BUILD_DIR) clean
 

doc/python_api/rst/gpu.rst

@@ -1,7 +1,10 @@
-
 GPU functions (gpu)
 ===================
 
+.. module:: gpu
+
+This module provides access to materials GLSL shaders.
+
 *****
 Intro
 *****
@@ -16,7 +19,6 @@ and in the game engine.
     are are closely related to Blender's internal GLSL code and may change if the GLSL code 
     is modified (e.g. new uniform type). 
 
-.. module:: gpu
 
 *********
 Constants

doc/python_api/sphinx_doc_gen.py

@@ -83,6 +83,7 @@ else:
         "aud",
         "bgl",
         "blf",
+        "gpu",
         "mathutils",
         "mathutils.geometry",
     )
@@ -1122,6 +1123,8 @@ def rna2sphinx(BASEPATH):
         fw("   bgl.rst\n\n")
     if "blf" not in EXCLUDE_MODULES:
         fw("   blf.rst\n\n")
+    if "gpu" not in EXCLUDE_MODULES:
+        fw("   gpu.rst\n\n")
     if "aud" not in EXCLUDE_MODULES:
         fw("   aud.rst\n\n")
     if "bpy_extras" not in EXCLUDE_MODULES:
@@ -1262,6 +1265,13 @@ def rna2sphinx(BASEPATH):
         import shutil
         shutil.copy2(os.path.join(BASEPATH, "..", "rst", "bgl.rst"), BASEPATH)
 
+    if "gpu" not in EXCLUDE_MODULES:
+        #import gpu as module
+        #pymodule2sphinx(BASEPATH, "gpu", module, "GPU Shader Module")
+        #del module
+        import shutil
+        shutil.copy2(os.path.join(BASEPATH, "..", "rst", "gpu.rst"), BASEPATH)
+
     if "aud" not in EXCLUDE_MODULES:
         import aud as module
         pymodule2sphinx(BASEPATH, "aud", module, "Audio System")