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Rust: Add a Glide renderer (2D only for now) This is an experiment for a Rust renderer, iterating over the Python data using pyo3. It requires --feature=glide to be passed to cargo build, doesn’t support NPOT textures, text rendering, the background, or even msg faces, some of that may come in a future changeset.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Mon, 05 Sep 2022 17:53:36 +0200
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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14
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15
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16 from libc.stdlib cimport malloc
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17 from libc.string cimport memcpy
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18 from libc.math cimport M_PI as pi
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19
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20 from pytouhou.utils.matrix cimport Matrix, scale2d, flip, rotate_x, rotate_y, rotate_z, translate, translate2d
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21
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22
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23 cdef Matrix default
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24 default = Matrix(-.5, .5, .5, -.5,
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25 -.5, -.5, .5, .5,
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26 0, 0, 0, 0,
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27 1, 1, 1, 1)
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28
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29
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30 def get_sprite_rendering_data(Sprite sprite):
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31 if sprite.changed:
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32 render_sprite(sprite)
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33 data = <RenderingData*>sprite._rendering_data
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34 color = <unsigned int>data.color[0] << 24 | <unsigned int>data.color[1] << 16 | <unsigned int>data.color[2] << 8 | <unsigned int>data.color[3]
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35 return (data.pos, [data.left, data.right, data.bottom, data.top], color)
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36
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37
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38 cdef void render_sprite(Sprite sprite) nogil:
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39 cdef Matrix vertmat
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40
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41 if sprite._rendering_data == NULL:
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42 sprite._rendering_data = malloc(sizeof(RenderingData))
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43
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44 data = <RenderingData*>sprite._rendering_data
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45 memcpy(&vertmat, &default, sizeof(Matrix))
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46
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47 tx, ty, tw, th = sprite._texcoords[0], sprite._texcoords[1], sprite._texcoords[2], sprite._texcoords[3]
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48 sx, sy = sprite._rescale[0], sprite._rescale[1]
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49 width = sprite.width_override or (tw * sx)
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50 height = sprite.height_override or (th * sy)
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51
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52 scale2d(&vertmat, width, height)
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53 if sprite.mirrored:
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54 flip(&vertmat)
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55
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56 rx, ry, rz = sprite._rotations_3d[0], sprite._rotations_3d[1], sprite._rotations_3d[2]
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57 if sprite.automatic_orientation:
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58 rz += pi/2. - sprite.angle
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59 elif sprite.force_rotation:
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60 rz += sprite.angle
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61
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62 if rx:
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63 rotate_x(&vertmat, -rx)
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64 if ry:
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65 rotate_y(&vertmat, ry)
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66 if rz:
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67 rotate_z(&vertmat, -rz) #TODO: minus, really?
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68 if sprite.allow_dest_offset:
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69 translate(&vertmat, sprite._dest_offset)
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70 if sprite.corner_relative_placement: # Reposition
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71 translate2d(&vertmat, width / 2, height / 2)
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72
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73 memcpy(data.pos, &vertmat, 12 * sizeof(float))
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74
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75 x_1 = sprite.anm.size_inv[0]
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76 y_1 = sprite.anm.size_inv[1]
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77 tox, toy = sprite._texoffsets[0], sprite._texoffsets[1]
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78 data.left = tx * x_1 + tox
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79 data.right = (tx + tw) * x_1 + tox
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80 data.bottom = ty * y_1 + toy
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81 data.top = (ty + th) * y_1 + toy
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82
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83 for i in range(4):
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84 data.color[i] = sprite._color[i]
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85
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86 sprite.changed = False