Searched full:alpha (Results 1 – 25 of 128) sorted by relevance
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| /Documentation/gpu/amdgpu/display/ |
| D | display-manager.rst | 94 this DRM property and the alpha blending equations in :ref:`DRM Plane
97 Basically, a blend mode sets the alpha blending equation for plane
98 composition that fits the mode in which the alpha channel affects the state of
100 example, consider the following elements of the alpha blending equation:
103 - *fg.alpha*: Alpha component value from the foreground's pixel.
105 - *plane_alpha*: Plane alpha value set by the **plane "alpha" property**, see
108 in the basic alpha blending equation::
110 out.rgb = alpha * fg.rgb + (1 - alpha) * bg.rgb
112 the alpha channel value of each pixel in a plane is ignored and only the plane
113 alpha affects the resulted pixel color values.
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| D | mpo-overview.rst | 81 * Only overlay planes have alpha blending support
140 (i.e., set the alpha to zero). The primary plane video will be visible through
153 (i.e., set the alpha to zero). The primary plane videos will be visible through
169 - ``kms_plane_alpha_blend@pipe-*-alpha-basic``
170 - ``kms_plane_alpha_blend@pipe-*-alpha-transparant-fb``
171 - ``kms_plane_alpha_blend@pipe-*-alpha-opaque-fb``
172 - ``kms_plane_alpha_blend@pipe-*-constant-alpha-min``
173 - ``kms_plane_alpha_blend@pipe-*-constant-alpha-mid``
174 - ``kms_plane_alpha_blend@pipe-*-constant-alpha-max``
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| /Documentation/devicetree/bindings/iio/afe/ |
| D | temperature-sense-rtd.yaml | 24 R(T) = r0 * (1 + alpha * T)
25 T = 1 / (alpha * r0 * iexc) * (V - r0 * iexc)
62 alpha-ppm-per-celsius:
64 alpha can also be expressed in micro-ohms per ohm Celsius. It's a linear
68 alpha = (R_100 - R_0) / (100 * R_0)
74 Pure platinum has an alpha of 3925. Industry standards such as IEC60751
75 and ASTM E-1137 specify an alpha of 3850.
87 - alpha-ppm-per-celsius
98 alpha-ppm-per-celsius = <3908>;
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| D | temperature-transducer.yaml | 26 T = (Isense(T) / alpha) + offset
27 T = 1 / (Rsense * alpha) * (V + offset * Rsense * alpha)
78 alpha-ppm-per-celsius:
82 alpha is expressed in parts per million which can be micro-amps per
92 - alpha-ppm-per-celsius
103 alpha-ppm-per-celsius = <1>; /* 1 uA/K */
112 alpha-ppm-per-celsius = <4000>; /* 4 mV/K */
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| /Documentation/userspace-api/media/v4l/ |
| D | vidioc-g-fbuf.rst | 227 - The device supports clipping/blending using the alpha channel of
228 the framebuffer or VGA signal. Alpha blending makes no sense for
232 - The device supports alpha blending using a global alpha value.
233 Alpha blending makes no sense for destructive overlays.
236 - The device supports clipping/blending using the inverted alpha
237 channel of the framebuffer or VGA signal. Alpha blending makes no
289 - Use the alpha channel of the framebuffer to clip or blend
291 output = framebuffer pixel * alpha + video pixel * (1 - alpha).
292 The actual alpha depth depends on the framebuffer pixel format.
295 - Use a global alpha value to blend the framebuffer with video
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| D | pixfmt-rgb.rst | 17 presence of an alpha component or additional padding bits.
19 The usage and value of the alpha bits in formats that support them (named ARGB
20 or a permutation thereof, collectively referred to as alpha formats) depend on
22 (including capture queues of mem-to-mem devices) fill the alpha component in
23 memory. When the device captures an alpha channel the alpha component will have
24 a meaningful value. Otherwise, when the device doesn't capture an alpha channel
25 but can set the alpha bit to a user-configurable value, the
26 :ref:`V4L2_CID_ALPHA_COMPONENT <v4l2-alpha-component>` control is used to
27 specify that alpha value, and the alpha component of all pixels will be set to
29 an alpha component (XRGB or XBGR) must be used instead of an alpha format.
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| D | control.rst | 301 .. _v4l2-alpha-component:
304 Sets the alpha color component. When a capture device (or capture
306 an alpha component (e.g.
307 :ref:`packed RGB image formats <pixfmt-rgb>`) and the alpha value
309 control lets you select the alpha component value of all pixels.
311 consumes a frame format that doesn't include an alpha component and
312 the device supports alpha channel processing this control lets you
313 set the alpha component value of all pixels for further processing
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| /Documentation/devicetree/bindings/display/ |
| D | xylon,logicvc-display.yaml | 145 xylon,layer-alpha-mode:
147 # Alpha is configured layer-wide (C_LAYER_X_ALPHA_MODE == 0)
149 # Alpha is configured per-pixel (C_LAYER_X_ALPHA_MODE == 1)
151 description: Alpha mode for the layer (C_LAYER_X_ALPHA_MODE).
177 - xylon,layer-alpha-mode
248 xylon,layer-alpha-mode = "layer";
258 xylon,layer-alpha-mode = "layer";
267 xylon,layer-alpha-mode = "layer";
276 xylon,layer-alpha-mode = "layer";
285 xylon,layer-alpha-mode = "layer";
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| /Documentation/ABI/testing/ |
| D | sysfs-devices-platform-sh_mobile_lcdc_fb | 8 Stores the alpha blending value for the overlay. Values range
10 the mode is not set to Alpha Blending.
22 - 0 - Alpha Blending
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| /Documentation/gpu/ |
| D | afbc.rst | 74 instead use an equivalent format with alpha, setting all alpha bits to
76 which doesn't include alpha can be used, e.g. DRM_FORMAT_BGR888.
126 - 10-bit per component RGB, with 2-bit alpha
134 - 8-bit per component RGB, with 8-bit alpha
156 - 5-bit per component RGB, with 1-bit alpha
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| /Documentation/mm/ |
| D | active_mm.rst | 89 because it slightly changes the interfaces to accommodate the alpha (who
90 would have thought it, but the alpha actually ends up having one of the
92 and register state is separate, the alpha PALcode joins the two, and you
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| /Documentation/RCU/ |
| D | NMI-RCU.rst | 55 for anyone attempting to do something similar on Alpha or on systems
59 …Why might the rcu_dereference_sched() be necessary on Alpha, given that the code referenced by the…
107 …Why might the rcu_dereference_sched() be necessary on Alpha, given that the code referenced by the…
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| /Documentation/admin-guide/media/ |
| D | dvb-usb-vp7045-cardlist.rst | 17 * - Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II)
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| /Documentation/userspace-api/ |
| D | dma-buf-alloc-exchange.rst | 46 A two-dimensional array of some or all of an image's color and alpha
52 have an alpha value as an additional channel.
55 Bytes or bits that represent some or all of the color/alpha channel values
65 channels R, G, and B. Alpha channel is sometimes counted as a color
69 A description of how pixel data represents the pixel's color and alpha
75 alpha:
109 a single 32-bit value in memory. Alpha, red, green, and blue, color channels are
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| /Documentation/features/core/eBPF-JIT/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/features/perf/perf-regs/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/features/time/context-tracking/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/features/debug/user-ret-profiler/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/devicetree/bindings/interrupt-controller/ |
| D | idt,32434-pic.yaml | 10 - Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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| /Documentation/features/debug/kcov/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/features/debug/uprobes/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/features/debug/debug-vm-pgtable/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/features/vm/huge-vmap/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/features/debug/kprobes/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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| /Documentation/features/debug/optprobes/ |
| D | arch-support.txt | 9 | alpha: | TODO |
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