forked from bartvdbraak/blender
f29a738e23
Use keyword only arguments for the following functions. - addon_utils.module_bl_info 2nd arg `info_basis`. - addon_utils.modules 1st `module_cache`, 2nd arg `refresh`. - addon_utils.modules_refresh 1st arg `module_cache`. - bl_app_template_utils.activate 1nd arg `template_id`. - bl_app_template_utils.import_from_id 2nd arg `ignore_not_found`. - bl_app_template_utils.import_from_path 2nd arg `ignore_not_found`. - bl_keymap_utils.keymap_from_toolbar.generate 2nd & 3rd args `use_fallback_keys` & `use_reset`. - bl_keymap_utils.platform_helpers.keyconfig_data_oskey_from_ctrl 2nd arg `filter_fn`. - bl_ui_utils.bug_report_url.url_prefill_from_blender 1st arg `addon_info`. - bmesh.types.BMFace.copy 1st & 2nd args `verts`, `edges`. - bmesh.types.BMesh.calc_volume 1st arg `signed`. - bmesh.types.BMesh.from_mesh 2nd..4th args `face_normals`, `use_shape_key`, `shape_key_index`. - bmesh.types.BMesh.from_object 3rd & 4th args `cage`, `face_normals`. - bmesh.types.BMesh.transform 2nd arg `filter`. - bmesh.types.BMesh.update_edit_mesh 2nd & 3rd args `loop_triangles`, `destructive`. - bmesh.types.{BMVertSeq,BMEdgeSeq,BMFaceSeq}.sort 1st & 2nd arg `key`, `reverse`. - bmesh.utils.face_split 4th..6th args `coords`, `use_exist`, `example`. - bpy.data.libraries.load 2nd..4th args `link`, `relative`, `assets_only`. - bpy.data.user_map 1st..3rd args `subset`, `key_types, `value_types`. - bpy.msgbus.subscribe_rna 5th arg `options`. - bpy.path.abspath 2nd & 3rd args `start` & `library`. - bpy.path.clean_name 2nd arg `replace`. - bpy.path.ensure_ext 3rd arg `case_sensitive`. - bpy.path.module_names 2nd arg `recursive`. - bpy.path.relpath 2nd arg `start`. - bpy.types.EditBone.transform 2nd & 3rd arg `scale`, `roll`. - bpy.types.Operator.as_keywords 1st arg `ignore`. - bpy.types.Struct.{keyframe_insert,keyframe_delete} 2nd..5th args `index`, `frame`, `group`, `options`. - bpy.types.WindowManager.popup_menu 2nd & 3rd arg `title`, `icon`. - bpy.types.WindowManager.popup_menu_pie 3rd & 4th arg `title`, `icon`. - bpy.utils.app_template_paths 1st arg `subdir`. - bpy.utils.app_template_paths 1st arg `subdir`. - bpy.utils.blend_paths 1st..3rd args `absolute`, `packed`, `local`. - bpy.utils.execfile 2nd arg `mod`. - bpy.utils.keyconfig_set 2nd arg `report`. - bpy.utils.load_scripts 1st & 2nd `reload_scripts` & `refresh_scripts`. - bpy.utils.preset_find 3rd & 4th args `display_name`, `ext`. - bpy.utils.resource_path 2nd & 3rd arg `major`, `minor`. - bpy.utils.script_paths 1st..4th args `subdir`, `user_pref`, `check_all`, `use_user`. - bpy.utils.smpte_from_frame 2nd & 3rd args `fps`, `fps_base`. - bpy.utils.smpte_from_seconds 2nd & 3rd args `fps`, `fps_base`. - bpy.utils.system_resource 2nd arg `subdir`. - bpy.utils.time_from_frame 2nd & 3rd args `fps`, `fps_base`. - bpy.utils.time_to_frame 2nd & 3rd args `fps`, `fps_base`. - bpy.utils.units.to_string 4th..6th `precision`, `split_unit`, `compatible_unit`. - bpy.utils.units.to_value 4th arg `str_ref_unit`. - bpy.utils.user_resource 2nd & 3rd args `subdir`, `create` - bpy_extras.view3d_utils.location_3d_to_region_2d 4th arg `default`. - bpy_extras.view3d_utils.region_2d_to_origin_3d 4th arg `clamp`. - gpu.offscreen.unbind 1st arg `restore`. - gpu_extras.batch.batch_for_shader 4th arg `indices`. - gpu_extras.batch.presets.draw_circle_2d 4th arg `segments`. - gpu_extras.presets.draw_circle_2d 4th arg `segments`. - imbuf.types.ImBuf.resize 2nd arg `resize`. - imbuf.write 2nd arg `filepath`. - mathutils.kdtree.KDTree.find 2nd arg `filter`. - nodeitems_utils.NodeCategory 3rd & 4th arg `descriptions`, `items`. - nodeitems_utils.NodeItem 2nd..4th args `label`, `settings`, `poll`. - nodeitems_utils.NodeItemCustom 1st & 2nd arg `poll`, `draw`. - rna_prop_ui.draw 5th arg `use_edit`. - rna_prop_ui.rna_idprop_ui_get 2nd arg `create`. - rna_prop_ui.rna_idprop_ui_prop_clear 3rd arg `remove`. - rna_prop_ui.rna_idprop_ui_prop_get 3rd arg `create`. - rna_xml.xml2rna 2nd arg `root_rna`. - rna_xml.xml_file_write 4th arg `skip_typemap`.
85 lines
2.2 KiB
Python
85 lines
2.2 KiB
Python
"""
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Generate a texture using Offscreen Rendering
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--------------------------------------------
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#. Create an :class:`gpu.types.GPUOffScreen` object.
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#. Draw some circles into it.
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#. Make a new shader for drawing a planar texture in 3D.
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#. Draw the generated texture using the new shader.
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"""
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import bpy
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import gpu
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from mathutils import Matrix
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from gpu_extras.batch import batch_for_shader
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from gpu_extras.presets import draw_circle_2d
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# Create and fill offscreen
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##########################################
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offscreen = gpu.types.GPUOffScreen(512, 512)
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with offscreen.bind():
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fb = gpu.state.active_framebuffer_get()
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fb.clear(color=(0.0, 0.0, 0.0, 0.0))
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with gpu.matrix.push_pop():
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# reset matrices -> use normalized device coordinates [-1, 1]
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gpu.matrix.load_matrix(Matrix.Identity(4))
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gpu.matrix.load_projection_matrix(Matrix.Identity(4))
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amount = 10
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for i in range(-amount, amount + 1):
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x_pos = i / amount
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draw_circle_2d((x_pos, 0.0), (1, 1, 1, 1), 0.5, segments=200)
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# Drawing the generated texture in 3D space
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#############################################
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vertex_shader = '''
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uniform mat4 modelMatrix;
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uniform mat4 viewProjectionMatrix;
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in vec2 position;
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in vec2 uv;
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out vec2 uvInterp;
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void main()
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{
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uvInterp = uv;
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gl_Position = viewProjectionMatrix * modelMatrix * vec4(position, 0.0, 1.0);
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}
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'''
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fragment_shader = '''
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uniform sampler2D image;
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in vec2 uvInterp;
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out vec4 FragColor;
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void main()
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{
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FragColor = texture(image, uvInterp);
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}
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'''
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shader = gpu.types.GPUShader(vertex_shader, fragment_shader)
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batch = batch_for_shader(
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shader, 'TRI_FAN',
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{
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"position": ((-1, -1), (1, -1), (1, 1), (-1, 1)),
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"uv": ((0, 0), (1, 0), (1, 1), (0, 1)),
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},
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)
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def draw():
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shader.bind()
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shader.uniform_float("modelMatrix", Matrix.Translation((1, 2, 3)) @ Matrix.Scale(3, 4))
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shader.uniform_float("viewProjectionMatrix", bpy.context.region_data.perspective_matrix)
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shader.uniform_sampler("image", offscreen.texture_color)
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batch.draw(shader)
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bpy.types.SpaceView3D.draw_handler_add(draw, (), 'WINDOW', 'POST_VIEW')
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