diff options
| -rw-r--r-- | modules/snap_context/mesh_drawing.py | 50 |
1 files changed, 31 insertions, 19 deletions
diff --git a/modules/snap_context/mesh_drawing.py b/modules/snap_context/mesh_drawing.py index 82d87937..c85da506 100644 --- a/modules/snap_context/mesh_drawing.py +++ b/modules/snap_context/mesh_drawing.py @@ -156,33 +156,43 @@ class _Mesh_Arrays(): class GPU_Indices_Mesh(): - shader = Shader( - load_shader('3D_vert.glsl'), - None, - load_shader('primitive_id_frag.glsl'), - ) + shader = None - unif_use_clip_planes = bgl.glGetUniformLocation(shader.program, 'use_clip_planes') - unif_clip_plane = bgl.glGetUniformLocation(shader.program, 'clip_plane') + @classmethod + def init_opengl(cls): + # OpenGL was already initialized, nothing to do here. + if cls.shader is not None: + return + + cls.shader = Shader( + load_shader('3D_vert.glsl'), + None, + load_shader('primitive_id_frag.glsl'), + ) - unif_MVP = bgl.glGetUniformLocation(shader.program, 'MVP') - unif_MV = bgl.glGetUniformLocation(shader.program, 'MV') - unif_offset = bgl.glGetUniformLocation(shader.program, 'offset') + cls.unif_use_clip_planes = bgl.glGetUniformLocation(cls.shader.program, 'use_clip_planes') + cls.unif_clip_plane = bgl.glGetUniformLocation(cls.shader.program, 'clip_plane') - attr_pos = bgl.glGetAttribLocation(shader.program, 'pos') - attr_primitive_id = bgl.glGetAttribLocation(shader.program, 'primitive_id') + cls.unif_MVP = bgl.glGetUniformLocation(cls.shader.program, 'MVP') + cls.unif_MV = bgl.glGetUniformLocation(cls.shader.program, 'MV') + cls.unif_offset = bgl.glGetUniformLocation(cls.shader.program, 'offset') - P = bgl.Buffer(bgl.GL_FLOAT, (4, 4)) - MV = bgl.Buffer(bgl.GL_FLOAT, (4, 4)) + cls.attr_pos = bgl.glGetAttribLocation(cls.shader.program, 'pos') + cls.attr_primitive_id = bgl.glGetAttribLocation(cls.shader.program, 'primitive_id') - # returns of public API # - vert_index = bgl.Buffer(bgl.GL_INT, 1) + cls.P = bgl.Buffer(bgl.GL_FLOAT, (4, 4)) + cls.MV = bgl.Buffer(bgl.GL_FLOAT, (4, 4)) - tri_co = bgl.Buffer(bgl.GL_FLOAT, (3, 3)) - edge_co = bgl.Buffer(bgl.GL_FLOAT, (2, 3)) - vert_co = bgl.Buffer(bgl.GL_FLOAT, 3) + # returns of public API # + cls.vert_index = bgl.Buffer(bgl.GL_INT, 1) + + cls.tri_co = bgl.Buffer(bgl.GL_FLOAT, (3, 3)) + cls.edge_co = bgl.Buffer(bgl.GL_FLOAT, (2, 3)) + cls.vert_co = bgl.Buffer(bgl.GL_FLOAT, 3) def __init__(self, obj, draw_tris, draw_edges, draw_verts): + GPU_Indices_Mesh.init_opengl() + self._NULL = gl_buffer_void_as_long(0) self.MVP = bgl.Buffer(bgl.GL_FLOAT, (4, 4)) @@ -463,6 +473,7 @@ def _restore_shader_state(cls): def gpu_Indices_enable_state(): _store_current_shader_state(PreviousGLState) + GPU_Indices_Mesh.init_opengl() bgl.glUseProgram(GPU_Indices_Mesh.shader.program) #bgl.glBindVertexArray(GPU_Indices_Mesh.vao[0]) @@ -477,6 +488,7 @@ def gpu_Indices_use_clip_planes(rv3d, value): planes = bgl.Buffer(bgl.GL_FLOAT, (6, 4), rv3d.clip_planes) _store_current_shader_state(PreviousGLState) + GPU_Indices_Mesh.init_opengl() bgl.glUseProgram(GPU_Indices_Mesh.shader.program) bgl.glUniform1i(GPU_Indices_Mesh.unif_use_clip_planes, value) |