1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
#!/usr/bin/env python
##########################################################################
#
# Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
# All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sub license, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice (including the
# next paragraph) shall be included in all copies or substantial portions
# of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
# IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
##########################################################################
from gallium import *
def make_image(surface):
pixels = FloatArray(surface.height*surface.width*4)
surface.get_tile_rgba(0, 0, surface.width, surface.height, pixels)
import Image
outimage = Image.new(
mode='RGB',
size=(surface.width, surface.height),
color=(0,0,0))
outpixels = outimage.load()
for y in range(0, surface.height):
for x in range(0, surface.width):
offset = (y*surface.width + x)*4
r, g, b, a = [int(pixels[offset + ch]*255) for ch in range(4)]
outpixels[x, y] = r, g, b
return outimage
def save_image(filename, surface):
outimage = make_image(surface)
outimage.save(filename, "PNG")
def show_image(surface):
outimage = make_image(surface)
import Tkinter as tk
from PIL import Image, ImageTk
root = tk.Tk()
root.title('background image')
image1 = ImageTk.PhotoImage(outimage)
w = image1.width()
h = image1.height()
x = 100
y = 100
root.geometry("%dx%d+%d+%d" % (w, h, x, y))
panel1 = tk.Label(root, image=image1)
panel1.pack(side='top', fill='both', expand='yes')
panel1.image = image1
root.mainloop()
def test(dev):
ctx = dev.context_create()
width = 255
height = 255
# disabled blending/masking
blend = Blend()
blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE
blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE
blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO
blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO
blend.colormask = PIPE_MASK_RGBA
ctx.set_blend(blend)
# no-op depth/stencil/alpha
depth_stencil_alpha = DepthStencilAlpha()
ctx.set_depth_stencil_alpha(depth_stencil_alpha)
# rasterizer
rasterizer = Rasterizer()
rasterizer.front_winding = PIPE_WINDING_CW
rasterizer.cull_mode = PIPE_WINDING_NONE
rasterizer.bypass_clipping = 1
rasterizer.scissor = 1
#rasterizer.bypass_vs = 1
ctx.set_rasterizer(rasterizer)
# viewport (identity, we setup vertices in wincoords)
viewport = Viewport()
scale = FloatArray(4)
scale[0] = 1.0
scale[1] = 1.0
scale[2] = 1.0
scale[3] = 1.0
viewport.scale = scale
translate = FloatArray(4)
translate[0] = 0.0
translate[1] = 0.0
translate[2] = 0.0
translate[3] = 0.0
viewport.translate = translate
ctx.set_viewport(viewport)
# samplers
sampler = Sampler()
sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE
sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE
sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE
sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE
sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST
sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST
sampler.normalized_coords = 1
ctx.set_sampler(0, sampler)
# scissor
scissor = Scissor()
scissor.minx = 0
scissor.miny = 0
scissor.maxx = width
scissor.maxy = height
ctx.set_scissor(scissor)
clip = Clip()
clip.nr = 0
ctx.set_clip(clip)
# framebuffer
cbuf = dev.texture_create(
PIPE_FORMAT_X8R8G8B8_UNORM,
width, height,
tex_usage=PIPE_TEXTURE_USAGE_DISPLAY_TARGET,
)
_cbuf = cbuf.get_surface(usage = PIPE_BUFFER_USAGE_GPU_READ|PIPE_BUFFER_USAGE_GPU_WRITE)
fb = Framebuffer()
fb.width = width
fb.height = height
fb.num_cbufs = 1
fb.set_cbuf(0, _cbuf)
ctx.set_framebuffer(fb)
_cbuf.clear_value = 0x00000000
ctx.surface_clear(_cbuf, _cbuf.clear_value)
del _cbuf
# vertex shader
vs = Shader('''
VERT1.1
DCL IN[0], POSITION, CONSTANT
DCL IN[1], COLOR, CONSTANT
DCL OUT[0], POSITION, CONSTANT
DCL OUT[1], COLOR, CONSTANT
0:MOV OUT[0], IN[0]
1:MOV OUT[1], IN[1]
2:END
''')
ctx.set_vertex_shader(vs)
# fragment shader
fs = Shader('''
FRAG1.1
DCL IN[0], COLOR, LINEAR
DCL OUT[0], COLOR, CONSTANT
0:MOV OUT[0], IN[0]
1:END
''')
ctx.set_fragment_shader(fs)
nverts = 3
nattrs = 2
verts = FloatArray(nverts * nattrs * 4)
verts[ 0] = 128.0 # x1
verts[ 1] = 32.0 # y1
verts[ 2] = 0.0 # z1
verts[ 3] = 1.0 # w1
verts[ 4] = 1.0 # r1
verts[ 5] = 0.0 # g1
verts[ 6] = 0.0 # b1
verts[ 7] = 1.0 # a1
verts[ 8] = 32.0 # x2
verts[ 9] = 224.0 # y2
verts[10] = 0.0 # z2
verts[11] = 1.0 # w2
verts[12] = 0.0 # r2
verts[13] = 1.0 # g2
verts[14] = 0.0 # b2
verts[15] = 1.0 # a2
verts[16] = 224.0 # x3
verts[17] = 224.0 # y3
verts[18] = 0.0 # z3
verts[19] = 1.0 # w3
verts[20] = 0.0 # r3
verts[21] = 0.0 # g3
verts[22] = 1.0 # b3
verts[23] = 1.0 # a3
ctx.draw_vertices(PIPE_PRIM_TRIANGLES,
nverts,
nattrs,
verts)
ctx.flush()
show_image(cbuf.get_surface(usage = PIPE_BUFFER_USAGE_CPU_READ|PIPE_BUFFER_USAGE_CPU_WRITE))
#save_image('tri.png', cbuf.get_surface(usage = PIPE_BUFFER_USAGE_CPU_READ|PIPE_BUFFER_USAGE_CPU_WRITE))
def main():
dev = Device()
test(dev)
if __name__ == '__main__':
main()
|
