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#!/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(ctx, surface):
data = ctx.surface_read_rgba8(surface, 0, 0, surface.width, surface.height)
import Image
outimage = Image.fromstring('RGBA', (surface.width, surface.height), data, "raw", 'RGBA', 0, 1)
return outimage
def save_image(ctx, surface, filename):
outimage = make_image(ctx, surface)
outimage.save(filename, "PNG")
def show_image(ctx, surface):
outimage = make_image(ctx, 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
minz = 0.0
maxz = 1.0
# disabled blending/masking
blend = Blend()
blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE
blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE
blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO
blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO
blend.rt[0].colormask = PIPE_MASK_RGBA
ctx.set_blend(blend)
# depth/stencil/alpha
depth_stencil_alpha = DepthStencilAlpha()
depth_stencil_alpha.depth.enabled = 1
depth_stencil_alpha.depth.writemask = 1
depth_stencil_alpha.depth.func = PIPE_FUNC_LESS
ctx.set_depth_stencil_alpha(depth_stencil_alpha)
# rasterizer
rasterizer = Rasterizer()
rasterizer.front_winding = PIPE_WINDING_CW
rasterizer.cull_mode = PIPE_WINDING_NONE
rasterizer.scissor = 1
ctx.set_rasterizer(rasterizer)
# viewport
viewport = Viewport()
scale = FloatArray(4)
scale[0] = width / 2.0
scale[1] = -height / 2.0
scale[2] = (maxz - minz) / 2.0
scale[3] = 1.0
viewport.scale = scale
translate = FloatArray(4)
translate[0] = width / 2.0
translate[1] = height / 2.0
translate[2] = (maxz - minz) / 2.0
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_fragment_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()
clip.nr = 0
ctx.set_clip(clip)
# framebuffer
cbuf = dev.texture_create(
PIPE_FORMAT_B8G8R8X8_UNORM,
width, height,
tex_usage=PIPE_TEXTURE_USAGE_RENDER_TARGET,
).get_surface()
zbuf = dev.texture_create(
PIPE_FORMAT_Z32_UNORM,
width, height,
tex_usage=PIPE_TEXTURE_USAGE_DEPTH_STENCIL,
).get_surface()
fb = Framebuffer()
fb.width = width
fb.height = height
fb.nr_cbufs = 1
fb.set_cbuf(0, cbuf)
fb.set_zsbuf(zbuf)
ctx.set_framebuffer(fb)
rgba = FloatArray(4);
rgba[0] = 0.0
rgba[1] = 0.0
rgba[2] = 0.0
rgba[3] = 0.0
ctx.clear(PIPE_CLEAR_COLOR | PIPE_CLEAR_DEPTHSTENCIL, rgba, 1.0, 0xff)
# vertex shader
vs = Shader('''
VERT
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('''
FRAG
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] = 0.0 # x1
verts[ 1] = 0.8 # y1
verts[ 2] = 0.2 # 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] = -0.8 # x2
verts[ 9] = -0.8 # y2
verts[10] = 0.5 # 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] = 0.8 # x3
verts[17] = -0.8 # y3
verts[18] = 0.8 # 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(ctx, cbuf)
show_image(ctx, zbuf)
save_image(ctx, cbuf, 'cbuf.png')
save_image(ctx, zbuf, 'zbuf.png')
def main():
dev = Device()
test(dev)
if __name__ == '__main__':
main()
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