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It recently occurred to me that I (and I think most people) learned computer programming starting with something like Visual Basic. I began to wonder if we had started at the lower level first if it would be easier now.
Do you think it is any value as...
Started by Ryan on
, 12 posts
by 12 people.
Answer Snippets (Read the full thread at stackoverflow):
But if you really want to squeeze performance out of your program... .
You are not missing something even if you don't know the CPU in depth.
Architecture specific knowledge can indeed help.
Mean that the value of this information is diminished.
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I'm porting a software that build from 16bit color depth to 18bit color depth. How can I convert the 16-bit colors to 18-bit colors? Thanks.
Started by sasayins on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
Extract....
So green is easy! Just copy the value over from the 16 bit components (i.e.
This will turn the old color into a number between 0.0 and 1.0 and then scale it up to the new value range (as previously stated), each channel has 6 bits.
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Per the example array at the very bottom, i want to be able to append the depth of each embedded array inside of the array. for example:
array ( 53 => array ( 'title' => 'Home', 'path' => '', 'type' => '118', 'pid' => 52, 'hasChildren' ...
Started by youdontmeanmuch on
, 8 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Foreach($a as $key=>$value) { if (is_array($value)) setDepth($a[$key], $depth+1); } }
The thing array to the value $a:
$b = array_set_depth($a); print_r($b);
Edit:
To set depth before the children) && !($....
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Since an MP3-File has no fixed bit depth like a PCM-Stream, a decoder (e.g. lame) must determine what bit depth to use when converting an mp3-stream into a PCM-Stream. Does it work by using a default value (propably 16) or is there any other way?
Started by schneck on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
I'm not familiar in-depth with MP3 format, but isn't it possible that into....
To decode to any bit depth you want? I mean you set the wanted value at the beginning and the decoding takes the resulting PCM stream's bit-depth.
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Whats's the difference between use back face culling and a buffer of depth in OpenGL?
Started by Lucas on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Depth....
If not, discard the pixel.
Backface culling is when OpenGL determines which faces the value in the z buffer set the z buffer value as the new z buffer value.
The depth buffer with the new, closer value.
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What's the difference between backtracking and depth first search?
Started by Jinx on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Backtracking is a more general algorithm that....
Usually, a depth-first-search is a way of iterating through an actual graph/tree structure looking for a value, whereas backtracking is iterating through a problem space looking for a solution.
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My logging code uses the return value of backtrace() to determine the current stack depth (for pretty printing purposes), but I can see from profiling that this is a pretty expensive call.
I don't suppose there's a cheaper way of doing this? Note that...
Started by therefromhere on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
A TLS variable around with you called "depth" and increment it / decrement it every function? While uint32_t get_ebp(void) { __asm__ __volatile__("mov %%ebp, %%eax"); } int get_stack_depth(void) { uint32_t ebp = get_ebp(); int stack_....
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I'm currently reading from a depth texture in a postprocess depth of field shader using the following GLSL code:
vec4 depthSample = texture2D(sDepthTexture, tcScreen); float depth = depthSample.x * 255.0 / 256.0 + depthSample.y * 255.0 / 65536.0 + depthSample...
Started by richard_nz on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Unfortunately HLSL:
float depth = tex2D(DepthMapSampler, PSIn.TexCoord).r; float4 screenPos = depth; screenPos.w = 1.0f; float4 worldPos = mul(screenPos, xViewProjectionInv); worldPos /= worldPos.w the final Z value to get....
Matrix.
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I am having difficulty calculating the summation of depths [the sum of the individual depths for all children of the root] for a given BST. I have the total number of nodes for the tree, and I am trying to calculate the average depth for the tree, requiring...
Started by Jon on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
You could....
Then just divide by the number of nodes tag the question as such .
Just need to keep a depth counter as you traverse the tree (look up tree traversals if you have to) and add the value of the counter every time you reach a node.
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How can I check if two System.Drawing.Color structures represent the same color in 16 bit color depth (or generally based on the value of Screen.PrimaryScreen.BitsPerPixel)?
Let's say I set Form.TransparencyKey to Value1 (of Color type), I want to check...
Started by David on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
You'd have to mask the R, G and B values ....
Since ColorTranslator.ToWin32 is used under the hood, does this work?
if( ColorTranslator.ToWin32(Value1) == ColorTranslator.ToWin32(Value2) )
There are two pixel formats for 16-bit color, 555 and 565 .
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