Mesa (master): python/tests: Test sampling from a depth texture.
Jose Fonseca
jrfonseca at kemper.freedesktop.org
Thu Jun 11 15:35:50 UTC 2009
Module: Mesa
Branch: master
Commit: cc09724a50a4cabb68b7c5f5b8d3812d38f65391
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=cc09724a50a4cabb68b7c5f5b8d3812d38f65391
Author: José Fonseca <jfonseca at vmware.com>
Date: Thu Jun 11 16:21:00 2009 +0100
python/tests: Test sampling from a depth texture.
---
.../state_trackers/python/tests/texture_sample.py | 223 +++++++++++++++++++-
1 files changed, 216 insertions(+), 7 deletions(-)
diff --git a/src/gallium/state_trackers/python/tests/texture_sample.py b/src/gallium/state_trackers/python/tests/texture_sample.py
index a382424..06130ea 100755
--- a/src/gallium/state_trackers/python/tests/texture_sample.py
+++ b/src/gallium/state_trackers/python/tests/texture_sample.py
@@ -99,7 +99,7 @@ def is_pot(n):
return n & (n - 1) == 0
-class TextureTest(TestCase):
+class TextureColorSampleTest(TestCase):
tags = (
'target',
@@ -286,6 +286,206 @@ class TextureTest(TestCase):
self.assert_rgba(cbuf, x, y, w, h, expected_rgba, 4.0/256, 0.85)
+class TextureDepthSampleTest(TestCase):
+
+ tags = (
+ 'target',
+ 'format',
+ 'width',
+ 'height',
+ 'depth',
+ 'last_level',
+ 'face',
+ 'level',
+ 'zslice',
+ )
+
+ def test(self):
+ dev = self.dev
+
+ target = self.target
+ format = self.format
+ width = self.width
+ height = self.height
+ depth = self.depth
+ last_level = self.last_level
+ face = self.face
+ level = self.level
+ zslice = self.zslice
+
+ tex_usage = PIPE_TEXTURE_USAGE_SAMPLER
+ geom_flags = 0
+ if width != height:
+ geom_flags |= PIPE_TEXTURE_GEOM_NON_SQUARE
+ if not is_pot(width) or not is_pot(height) or not is_pot(depth):
+ geom_flags |= PIPE_TEXTURE_GEOM_NON_POWER_OF_TWO
+
+ if not dev.is_format_supported(format, target, tex_usage, geom_flags):
+ raise TestSkip
+
+ ctx = self.dev.context_create()
+
+ # 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)
+
+ # 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.bypass_vs_clip_and_viewport = 1
+ ctx.set_rasterizer(rasterizer)
+
+ # 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_NEAREST
+ sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST
+ sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST
+ sampler.normalized_coords = 1
+ sampler.min_lod = 0
+ sampler.max_lod = PIPE_MAX_TEXTURE_LEVELS - 1
+ ctx.set_sampler(0, sampler)
+
+ # texture
+ texture = dev.texture_create(
+ target = target,
+ format = format,
+ width = width,
+ height = height,
+ depth = depth,
+ last_level = last_level,
+ tex_usage = tex_usage,
+ )
+
+ expected_rgba = FloatArray(height*width*4)
+ texture.get_surface(
+ face = face,
+ level = level,
+ zslice = zslice,
+ ).sample_rgba(expected_rgba)
+
+ ctx.set_sampler_texture(0, texture)
+
+ # framebuffer
+ cbuf_tex = dev.texture_create(
+ PIPE_FORMAT_A8R8G8B8_UNORM,
+ width,
+ height,
+ tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET,
+ )
+
+ zsbuf_tex = dev.texture_create(
+ PIPE_FORMAT_Z24X8_UNORM,
+ width,
+ height,
+ tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET,
+ )
+
+ cbuf = cbuf_tex.get_surface()
+ zsbuf = zsbuf_tex.get_surface()
+ fb = Framebuffer()
+ fb.width = width
+ fb.height = height
+ fb.nr_cbufs = 1
+ fb.set_cbuf(0, cbuf)
+ fb.set_zsbuf(zsbuf)
+ ctx.set_framebuffer(fb)
+ rgba = FloatArray(4);
+ rgba[0] = 0.5
+ rgba[1] = 0.5
+ rgba[2] = 0.5
+ rgba[3] = 0.5
+ ctx.clear(PIPE_CLEAR_DEPTHSTENCIL, rgba, 1.0, 0)
+ del fb
+
+ # vertex shader
+ vs = Shader('''
+ VERT1.1
+ DCL IN[0], POSITION, CONSTANT
+ DCL IN[1], GENERIC, CONSTANT
+ DCL OUT[0], POSITION, CONSTANT
+ DCL OUT[1], GENERIC, CONSTANT
+ 0:MOV OUT[0], IN[0]
+ 1:MOV OUT[1], IN[1]
+ 2:END
+ ''')
+ #vs.dump()
+ ctx.set_vertex_shader(vs)
+
+ # fragment shader
+ op = {
+ PIPE_TEXTURE_1D: "1D",
+ PIPE_TEXTURE_2D: "2D",
+ PIPE_TEXTURE_3D: "3D",
+ PIPE_TEXTURE_CUBE: "CUBE",
+ }[target]
+ fs = Shader('''
+ FRAG1.1
+ DCL IN[0], GENERIC[0], LINEAR
+ DCL SAMP[0], CONSTANT
+ DCL OUT[0].z, POSITION
+ 0:TEX OUT[0].z, IN[0], SAMP[0], %s
+ 1:END
+ ''' % op)
+ #fs.dump()
+ ctx.set_fragment_shader(fs)
+
+ nverts = 4
+ nattrs = 2
+ verts = FloatArray(nverts * nattrs * 4)
+
+ x = 0
+ y = 0
+ w, h = minify((width, height), level)
+
+ pos = [
+ [x, y],
+ [x+w, y],
+ [x+w, y+h],
+ [x, y+h],
+ ]
+
+ tex = tex_coords(texture, face, level, zslice)
+
+ for i in range(0, 4):
+ j = 8*i
+ verts[j + 0] = pos[i][0] # x
+ verts[j + 1] = pos[i][1] # y
+ verts[j + 2] = 0.0 # z
+ verts[j + 3] = 1.0 # w
+ verts[j + 4] = tex[i][0] # s
+ verts[j + 5] = tex[i][1] # r
+ verts[j + 6] = tex[i][2] # q
+ verts[j + 7] = 1.0
+
+ ctx.draw_vertices(PIPE_PRIM_TRIANGLE_FAN,
+ nverts,
+ nattrs,
+ verts)
+
+ ctx.flush()
+
+ zsbuf = zsbuf_tex.get_surface()
+
+ self.assert_rgba(zsbuf, x, y, w, h, expected_rgba, 4.0/256, 0.85)
+
+
+
def main():
dev = Device()
@@ -304,11 +504,10 @@ def main():
PIPE_FORMAT_R5G6B5_UNORM,
PIPE_FORMAT_A1R5G5B5_UNORM,
PIPE_FORMAT_A4R4G4B4_UNORM,
- #PIPE_FORMAT_Z32_UNORM,
- #PIPE_FORMAT_Z24S8_UNORM,
- #PIPE_FORMAT_Z24X8_UNORM,
- #PIPE_FORMAT_Z16_UNORM,
- #PIPE_FORMAT_S8_UNORM,
+ PIPE_FORMAT_Z32_UNORM,
+ PIPE_FORMAT_Z24S8_UNORM,
+ PIPE_FORMAT_Z24X8_UNORM,
+ PIPE_FORMAT_Z16_UNORM,
PIPE_FORMAT_A8_UNORM,
PIPE_FORMAT_L8_UNORM,
PIPE_FORMAT_YCBCR,
@@ -347,7 +546,17 @@ def main():
for level in range(0, last_level + 1):
zslice = 0
while zslice < depth >> level:
- test = TextureTest(
+ if format in (
+ PIPE_FORMAT_Z32_UNORM,
+ PIPE_FORMAT_Z24S8_UNORM,
+ PIPE_FORMAT_Z24X8_UNORM,
+ PIPE_FORMAT_Z16_UNORM,
+ ):
+ klass = TextureDepthSampleTest
+ else:
+ klass = TextureColorSampleTest
+
+ test = klass(
dev = dev,
target = target,
format = format,
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