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* Also in many places OpenGL is now advertised as full support, since it is pretty close by now and needs people to jump on it full-time and use it in anger.
82 lines
4.9 KiB
XML
82 lines
4.9 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<topic id="F1C1E449-55ED-46FE-BBFD-11D1A0511501" revisionNumber="1">
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<developerConceptualDocument xmlns="http://ddue.schemas.microsoft.com/authoring/2003/5" xmlns:xlink="http://www.w3.org/1999/xlink">
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<introduction>
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<para>When in the texture viewer you can inspect the pixel values to obtain the exact
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contents of any pixel in the texture.</para>
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</introduction>
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<section address="Subresource">
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<title>Selecting appropriate subresource</title>
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<content>
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<para>More details can be found in the <link xlink:href="2c540574-0b81-4a40-8119-ba0283fddf41" />
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page, but the first step is to select the appropriate subresource - array element, cubemap face
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or mip slice.</para>
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<para>The values that are picked out of the texture are always exact values, and will not be
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affected by the currently selected channels or range adaption control.</para>
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</content>
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</section>
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<section address="PickPixel">
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<title>Picking a Pixel Value</title>
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<content>
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<para>At any point while hovering over the texture the status bar contains the current
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pixel location that the cursor is hovering over, as well as a basic colour swatch to give
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some indication of where you are.</para>
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<mediaLink>
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<caption placement="after" lead="Hover Status Bar">The status bar showing position and colour</caption>
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<image xlink:href="HoverStatus"/>
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</mediaLink>
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<para>When the right mouse button is pressed, the currently hovered pixel value will be displayed
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with the current float precision settings - for more information on how to tune these look at
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the window reference for the <link xlink:href="B1826EEE-2ED1-44E4-8202-37CD8B3FEEB5" />.</para>
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<para>For depth textures the depth and stencil values will be displayed separately. The stencil
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value (as with any integer formatted texture) will be displayed as an integer.</para>
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<mediaLink>
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<caption placement="after" lead="Picked Pixel">The value of a pixel that has been picked</caption>
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<image xlink:href="RMBStatus"/>
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</mediaLink>
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<para>If the right mouse button is just clicked, the picked pixel value will remain with the same
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value as the mouse moves. If you hold the right mouse button and drag, it will update as the mouse
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moves to allow some amount of refinement.</para>
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<para>To make fine adjustments by a single pixel at a time, it's easiest to use the arrow keys
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on the keyboard. Pressing these will shift the picked location by a single pixel in each
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direction.</para>
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</content>
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</section>
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<section address="PixelContext">
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<title>Pixel Context Display</title>
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<content>
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<para>Whenever a pixel is picked, the pixel context display is updated to surround the currently
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selected pixel. This dialog is by default docked in the bottom right of the texture viewer, adjacent
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to the thumbnail strip.</para>
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<mediaLink>
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<caption placement="after" lead="Pixel Context">The zoomed in context around the pixel currently selected</caption>
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<image xlink:href="PixelContext"/>
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</mediaLink>
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<para>This context display shows a zoomed in view of the texture around the area that you've selected
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so that it's easier to make small adjustments without zooming in and losing a sense of the whole
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texture.</para>
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<para>The pixel context viewer can also allow you to launch pixel debugging. Once a pixel is picked
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the button below the context is activated which will launch the shader debugger. More information
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about this is available: <link xlink:href="8a7568ca-6b2c-4873-b8eb-d1ad2aff9629" />.</para>
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</content>
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</section>
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<section address="PixelHistory">
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<title>Pixel History</title>
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<content>
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<para>When you have a pixel selected, you can click 'History' to open up a pixel history view
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showing every modification to the selected texture from the start of the frame to the currently
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selected event.</para>
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<para>This display shows each modifying event as its own row, coloured as to whether any modifications
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happened from this event or not - green for fragments that passed all pipeline tests, red for
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where fragments failed some test, and light grey for UAV writes where it's unknown if there was a write.</para>
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<para>You can expand each event to see if there were multiple fragments, and see the shader output
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value from each fragment.</para>
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<para>Right clicking will allow you to launch the shader debugger at the given event for the selected
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pixel. If you select a particular fragment or primitive, this will be the fragment that is debugged.</para>
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</content>
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</section>
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<relatedTopics>
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<link xlink:href="2c540574-0b81-4a40-8119-ba0283fddf41" />
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</relatedTopics>
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</developerConceptualDocument>
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</topic> |