Fixing the issue with opengl with a local copy

boomer.nimble

@@ -5,4 +5,4 @@ license     = "MIT"
 srcDir      = "src"
 bin         = @["boomer"]
 
-requires "nim >= 0.18.0", "x11 >= 1.1", "opengl >= 1.2.3"
+requires "nim >= 0.18.0", "x11 >= 1.1"

src/nim.cfg

@@ -0,0 +1 @@
+--path:"../vendor/opengl/src"

vendor/opengl/.gitignore

@@ -0,0 +1 @@
+nimcache/

vendor/opengl/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/opengl/README.md

@@ -0,0 +1,15 @@
+# opengl
+An OpenGL interface
+
+# Extension loading
+``loadExtensions()`` must be executed after the creation of a rendering context and before any OpenGL extension procs are used.
+
+# Automatic error checking
+The OpenGL procs do perform automatic error checking by default. This can be disabled at compile-time by defining the conditional symbol ``noAutoGLerrorCheck`` (-d:noAutoGLerrorCheck), in which case the error checking code will be omitted from the binary; or at run-time by executing this statement: ``enableAutoGLerrorCheck(false)``.
+
+# Building with x11 (linux)
+When receiving the following error:
+```
+<path-to-opengl>/opengl/private/prelude.nim(5, 10) Error: cannot open file: X
+```
+Version 1.2.0 is broken for Linux builds, as x11 is imported incorrectly - use 1.2.2 or greater!

vendor/opengl/examples/glut_example.nim

@@ -0,0 +1,110 @@
+# OpenGL example using glut
+# On windows: Requires glut32.dll or freeglut.dll
+import opengl/glut
+import opengl
+import opengl/glu
+
+proc display() {.cdecl.} =
+  glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT) # Clear color and depth buffers
+  glMatrixMode(GL_MODELVIEW)                          # To operate on model-view matrix
+  glLoadIdentity()                 # Reset the model-view matrix
+  glTranslatef(1.5, 0.0, -7.0)     # Move right and into the screen
+
+  # Render a cube consisting of 6 quads
+  # Each quad consists of 2 triangles
+  # Each triangle consists of 3 vertices
+
+  glBegin(GL_TRIANGLES)        # Begin drawing of triangles
+
+  # Top face (y = 1.0f)
+  glColor3f(0.0, 1.0, 0.0)     # Green
+  glVertex3f( 1.0, 1.0, -1.0)
+  glVertex3f(-1.0, 1.0, -1.0)
+  glVertex3f(-1.0, 1.0,  1.0)
+  glVertex3f( 1.0, 1.0,  1.0)
+  glVertex3f( 1.0, 1.0, -1.0)
+  glVertex3f(-1.0, 1.0,  1.0)
+
+  # Bottom face (y = -1.0f)
+  glColor3f(1.0, 0.5, 0.0)     # Orange
+  glVertex3f( 1.0, -1.0,  1.0)
+  glVertex3f(-1.0, -1.0,  1.0)
+  glVertex3f(-1.0, -1.0, -1.0)
+  glVertex3f( 1.0, -1.0, -1.0)
+  glVertex3f( 1.0, -1.0,  1.0)
+  glVertex3f(-1.0, -1.0, -1.0)
+
+  # Front face  (z = 1.0f)
+  glColor3f(1.0, 0.0, 0.0)     # Red
+  glVertex3f( 1.0,  1.0, 1.0)
+  glVertex3f(-1.0,  1.0, 1.0)
+  glVertex3f(-1.0, -1.0, 1.0)
+  glVertex3f( 1.0, -1.0, 1.0)
+  glVertex3f( 1.0,  1.0, 1.0)
+  glVertex3f(-1.0, -1.0, 1.0)
+
+  # Back face (z = -1.0f)
+  glColor3f(1.0, 1.0, 0.0)     # Yellow
+  glVertex3f( 1.0, -1.0, -1.0)
+  glVertex3f(-1.0, -1.0, -1.0)
+  glVertex3f(-1.0,  1.0, -1.0)
+  glVertex3f( 1.0,  1.0, -1.0)
+  glVertex3f( 1.0, -1.0, -1.0)
+  glVertex3f(-1.0,  1.0, -1.0)
+
+  # Left face (x = -1.0f)
+  glColor3f(0.0, 0.0, 1.0)     # Blue
+  glVertex3f(-1.0,  1.0,  1.0)
+  glVertex3f(-1.0,  1.0, -1.0)
+  glVertex3f(-1.0, -1.0, -1.0)
+  glVertex3f(-1.0, -1.0,  1.0)
+  glVertex3f(-1.0,  1.0,  1.0)
+  glVertex3f(-1.0, -1.0, -1.0)
+
+  # Right face (x = 1.0f)
+  glColor3f(1.0, 0.0, 1.0)    # Magenta
+  glVertex3f(1.0,  1.0, -1.0)
+  glVertex3f(1.0,  1.0,  1.0)
+  glVertex3f(1.0, -1.0,  1.0)
+  glVertex3f(1.0, -1.0, -1.0)
+  glVertex3f(1.0,  1.0, -1.0)
+  glVertex3f(1.0, -1.0,  1.0)
+
+  glEnd()  # End of drawing
+
+  glutSwapBuffers() # Swap the front and back frame buffers (double buffering)
+
+proc reshape(width: GLsizei, height: GLsizei) {.cdecl.} =
+  # Compute aspect ratio of the new window
+  if height == 0:
+    return                # To prevent divide by 0
+
+  # Set the viewport to cover the new window
+  glViewport(0, 0, width, height)
+
+  # Set the aspect ratio of the clipping volume to match the viewport
+  glMatrixMode(GL_PROJECTION)  # To operate on the Projection matrix
+  glLoadIdentity()             # Reset
+  # Enable perspective projection with fovy, aspect, zNear and zFar
+  gluPerspective(45.0, width / height, 0.1, 100.0)
+
+var argc: cint = 0
+glutInit(addr argc, nil)
+glutInitDisplayMode(GLUT_DOUBLE)
+glutInitWindowSize(640, 480)
+glutInitWindowPosition(50, 50)
+discard glutCreateWindow("OpenGL Example")
+
+glutDisplayFunc(display)
+glutReshapeFunc(reshape)
+
+loadExtensions()
+
+glClearColor(0.0, 0.0, 0.0, 1.0)                   # Set background color to black and opaque
+glClearDepth(1.0)                                 # Set background depth to farthest
+glEnable(GL_DEPTH_TEST)                           # Enable depth testing for z-culling
+glDepthFunc(GL_LEQUAL)                            # Set the type of depth-test
+glShadeModel(GL_SMOOTH)                           # Enable smooth shading
+glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST) # Nice perspective corrections
+
+glutMainLoop()

vendor/opengl/examples/nim.cfg

@@ -0,0 +1 @@
+--path:"../src"

vendor/opengl/opengl.nimble

@@ -0,0 +1,13 @@
+# Package
+
+version = "1.2.9"
+author = "Andreas Rumpf"
+description = "an OpenGL wrapper"
+license = "MIT"
+
+srcDir = "src"
+
+# Dependencies
+
+requires "nim >= 0.11.0"
+requires "x11 >= 1.1"

vendor/opengl/src/opengl.nim

@@ -0,0 +1,19 @@
+#
+#
+#            Nim's Runtime Library
+#        (c) Copyright 2012-2017 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+## This module is a wrapper around `opengl`:idx:. If you define the symbol
+## ``useGlew`` this wrapper does not use Nim's ``dynlib`` mechanism,
+## but `glew`:idx: instead. However, this shouldn't be necessary anymore; even
+## extension loading for the different operating systems is handled here.
+##
+## You need to call ``loadExtensions`` after a rendering context has been
+## created to load any extension proc that your code uses.
+
+include opengl/private/prelude, opengl/private/types,
+    opengl/private/errors, opengl/private/procs, opengl/private/constants