diff options
author | Peter Kim <pk15950@gmail.com> | 2022-09-08 07:00:43 +0300 |
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committer | Peter Kim <pk15950@gmail.com> | 2022-09-08 07:00:43 +0300 |
commit | e83f88c951e26b01893acee4f24b40a46062a41c (patch) | |
tree | 09f60bf7d4fc2ae1ef50668823e416fc675b252e /io_mesh_uv_layout/export_uv_png.py | |
parent | ec84e3294593e2e26475f18c81e847bf00dc201e (diff) | |
parent | 0cd92169d40ae1c7e103ff269e850eaf1b901646 (diff) |
Merge branch 'master' into xr-devxr-dev
Diffstat (limited to 'io_mesh_uv_layout/export_uv_png.py')
-rw-r--r-- | io_mesh_uv_layout/export_uv_png.py | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/io_mesh_uv_layout/export_uv_png.py b/io_mesh_uv_layout/export_uv_png.py index 958bac8e..b051c980 100644 --- a/io_mesh_uv_layout/export_uv_png.py +++ b/io_mesh_uv_layout/export_uv_png.py @@ -2,31 +2,30 @@ import bpy import gpu -import bgl from mathutils import Vector, Matrix from mathutils.geometry import tessellate_polygon from gpu_extras.batch import batch_for_shader + def export(filepath, face_data, colors, width, height, opacity): offscreen = gpu.types.GPUOffScreen(width, height) offscreen.bind() try: - bgl.glClearColor(0.0, 0.0, 0.0, 0.0) - bgl.glClear(bgl.GL_COLOR_BUFFER_BIT) + fb = gpu.state.active_framebuffer_get() + fb.clear(color=(0.0, 0.0, 0.0, 0.0)) draw_image(face_data, opacity) - pixel_data = get_pixel_data_from_current_back_buffer(width, height) + pixel_data = fb.read_color(0, 0, width, height, 4, 0, 'UBYTE') + pixel_data.dimensions = width * height * 4 save_pixels(filepath, pixel_data, width, height) finally: offscreen.unbind() offscreen.free() + def draw_image(face_data, opacity): - bgl.glLineWidth(1) - bgl.glEnable(bgl.GL_BLEND) - bgl.glEnable(bgl.GL_LINE_SMOOTH) - bgl.glHint(bgl.GL_LINE_SMOOTH_HINT, bgl.GL_NICEST) + gpu.state.blend_set('ALPHA_PREMULT') with gpu.matrix.push_pop(): gpu.matrix.load_matrix(get_normalize_uvs_matrix()) @@ -35,8 +34,8 @@ def draw_image(face_data, opacity): draw_background_colors(face_data, opacity) draw_lines(face_data) - bgl.glDisable(bgl.GL_BLEND) - bgl.glDisable(bgl.GL_LINE_SMOOTH) + gpu.state.blend_set('NONE') + def get_normalize_uvs_matrix(): '''matrix maps x and y coordinates from [0, 1] to [-1, 1]''' @@ -47,6 +46,7 @@ def get_normalize_uvs_matrix(): matrix[1][1] = 2 return matrix + def draw_background_colors(face_data, opacity): coords = [uv for uvs, _ in face_data for uv in uvs] colors = [(*color, opacity) for uvs, color in face_data for _ in range(len(uvs))] @@ -59,35 +59,38 @@ def draw_background_colors(face_data, opacity): offset += len(uvs) shader = gpu.shader.from_builtin('2D_FLAT_COLOR') - batch = batch_for_shader(shader, 'TRIS', - {"pos" : coords, - "color" : colors}, - indices=indices) + batch = batch_for_shader( + shader, 'TRIS', + {"pos": coords, "color": colors}, + indices=indices, + ) batch.draw(shader) + def tessellate_uvs(uvs): return tessellate_polygon([uvs]) + def draw_lines(face_data): coords = [] for uvs, _ in face_data: for i in range(len(uvs)): start = uvs[i] - end = uvs[(i+1) % len(uvs)] + end = uvs[(i + 1) % len(uvs)] coords.append((start[0], start[1])) coords.append((end[0], end[1])) - shader = gpu.shader.from_builtin('2D_UNIFORM_COLOR') - batch = batch_for_shader(shader, 'LINES', {"pos" : coords}) + # Use '2D_UNIFORM_COLOR' in the `batch_for_shader` so we don't need to + # convert the coordinates to 3D as in the case of + # '3D_POLYLINE_UNIFORM_COLOR'. + batch = batch_for_shader(gpu.shader.from_builtin('2D_UNIFORM_COLOR'), 'LINES', {"pos": coords}) + shader = gpu.shader.from_builtin('3D_POLYLINE_UNIFORM_COLOR') shader.bind() + shader.uniform_float("viewportSize", gpu.state.viewport_get()[2:]) + shader.uniform_float("lineWidth", 0.5) shader.uniform_float("color", (0, 0, 0, 1)) batch.draw(shader) -def get_pixel_data_from_current_back_buffer(width, height): - buffer = bgl.Buffer(bgl.GL_BYTE, width * height * 4) - bgl.glReadBuffer(bgl.GL_BACK) - bgl.glReadPixels(0, 0, width, height, bgl.GL_RGBA, bgl.GL_UNSIGNED_BYTE, buffer) - return buffer def save_pixels(filepath, pixel_data, width, height): image = bpy.data.images.new("temp", width, height, alpha=True) |