Sybren A. Stüvel
e74e014c66
The `Image.gl_load()` call was changed in Blender commit 7ad802cf3ae500bc72863b6dba0f28a488fce3d1; the two parameters we were using were removed. This commit fixes the exception and makes the texture browser usable again, but doesn't properly fix everything. The textures are drawn in the wrong colour space, which will be fixed in another commit once I know how.
113 lines
2.9 KiB
Python
113 lines
2.9 KiB
Python
"""OpenGL drawing code for the texture browser.
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Requires Blender 2.80 or newer.
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"""
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import typing
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import bgl
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import blf
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import bpy
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import gpu
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from gpu_extras.batch import batch_for_shader
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if bpy.app.background:
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shader = None
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texture_shader = None
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else:
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shader = gpu.shader.from_builtin('2D_UNIFORM_COLOR')
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texture_shader = gpu.shader.from_builtin('2D_IMAGE')
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Float2 = typing.Tuple[float, float]
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Float3 = typing.Tuple[float, float, float]
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Float4 = typing.Tuple[float, float, float, float]
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def text(pos2d: Float2, display_text: typing.Union[str, typing.List[str]],
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rgba: Float4 = (1.0, 1.0, 1.0, 1.0),
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fsize=12,
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align='L'):
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"""Draw text with the top-left corner at 'pos2d'."""
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dpi = bpy.context.preferences.system.dpi
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gap = 12
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x_pos, y_pos = pos2d
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font_id = 0
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blf.size(font_id, fsize, dpi)
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# Compute the height of one line.
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mwidth, mheight = blf.dimensions(font_id, "Tp") # Use high and low letters.
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mheight *= 1.5
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# Split text into lines.
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if isinstance(display_text, str):
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mylines = display_text.split("\n")
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else:
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mylines = display_text
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maxwidth = 0
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maxheight = len(mylines) * mheight
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for idx, line in enumerate(mylines):
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text_width, text_height = blf.dimensions(font_id, line)
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if align == 'C':
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newx = x_pos - text_width / 2
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elif align == 'R':
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newx = x_pos - text_width - gap
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else:
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newx = x_pos
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# Draw
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blf.position(font_id, newx, y_pos - mheight * idx, 0)
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blf.color(font_id, rgba[0], rgba[1], rgba[2], rgba[3])
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blf.draw(font_id, " " + line)
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# saves max width
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if maxwidth < text_width:
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maxwidth = text_width
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return maxwidth, maxheight
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def aabox(v1: Float2, v2: Float2, rgba: Float4):
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"""Draw an axis-aligned box."""
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coords = [
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(v1[0], v1[1]),
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(v1[0], v2[1]),
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(v2[0], v2[1]),
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(v2[0], v1[1]),
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]
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shader.bind()
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shader.uniform_float("color", rgba)
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batch = batch_for_shader(shader, 'TRI_FAN', {"pos": coords})
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batch.draw(shader)
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def aabox_with_texture(v1: Float2, v2: Float2):
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"""Draw an axis-aligned box with a texture."""
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coords = [
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(v1[0], v1[1]),
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(v1[0], v2[1]),
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(v2[0], v2[1]),
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(v2[0], v1[1]),
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]
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texture_shader.bind()
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texture_shader.uniform_int("image", 0)
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batch = batch_for_shader(texture_shader, 'TRI_FAN', {
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"pos": coords,
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"texCoord": ((0, 0), (0, 1), (1, 1), (1, 0)),
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})
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batch.draw(texture_shader)
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def bind_texture(texture: bpy.types.Image):
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"""Bind a Blender image to a GL texture slot."""
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bgl.glActiveTexture(bgl.GL_TEXTURE0)
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bgl.glBindTexture(bgl.GL_TEXTURE_2D, texture.bindcode)
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def load_texture(texture: bpy.types.Image) -> int:
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"""Load the texture, return OpenGL error code."""
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return texture.gl_load()
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