صفحه 1:
0
Advanced D3D10
Shader Authoring
۱ ۳
صفحه 2:
Overview
® Review of Direct3D 10 and HLSL 4.0
© The power of the programmable
pipeline
® Guided) exercises: Visualizer
صفحه 3:
Some New D3D10
۶ 221۳1/257
® Completely re-architected from D3D9
fOr COnnmgurability and) performance
© Geometry Shader
© Fixed-function lighting and
thansformeation now programmable in
HLSL 4.0
© Configurable pipeline:
e Flexible shader sign
صفحه 4:
High Level Shader,
0 effective language
for Writing shaders
© Syntax is similar to °C’
e Preprocessor defines (#define, #ifdef,
tc)
oles ( «if , Matrix, etc)
0 ا ۱
۰ ۳ ۶ ea: 7011112 eta
صفحه 5:
Overview of the Pipeline
صفحه 6:
Vertex Shader 4.0 1
- 0 ی
e Vertices
® Shader Constants
e@ System Variables ( VertexID )
© Output
© ۱۳۶ ۱۱۵ ۱۵9 ۷۵۱ ۷
© Golor, Texture Coordi
nw
صفحه 7:
System-generated Values
® Values usable in shaders generated
by the D3D10 runtime
© Act exactly like semantics, just tag
your, Variable and off, you go
كزع ۷ ۶
© Provided to the VS ~
© SV _Instancelp
® Provided to the VS
© SV_PrimitivelD)
۰ 55-7 كر (or PS if there is ng
صفحه 8:
Geometry Shader 4.0
@ Input
© Per-primitive data (3 verts for a tri)
© System variables ( PrimitivelD )
© Output
© Points, lines, triangles
© Render target index, clip di
© Stream data to a buffer on t
© aka stream out
صفحه 9:
Geometry Shader
Restrictions
© Cannot output more than 4096 bytes
OF Information for each input
(9
© Performance is not guaranteed when
amplifying at this level
صفحه 10:
Pixel) Shader 4.0
© Input
© Interpolated data from vertex
shader
© Output
© Pixel color (with alpha)
© Optional; depth
صفحه 11:
Witata Was Means:
Gonngurability
© The real power of Direct3D 10 is that
there are many ways to accomplish
any one task
© More and more tasks can be pushed
Onto the GPU
© Performance/quality trad
made on yourterms
صفحه 12:
Guided) Exercises:
Visualizer
© DirectX 10 = exploitive effects in an
audio visualizer
© Roughly based| on the
GPUSpectrogram sample in available
in the’ DirectX SDK
e A framework to try out HL
£0 Show:
© |nstancelDs
صفحه 13:
Guided Exercises
Gesnisrell Dirsecloas
@ Each effect file guides you
through the exercises.
© Breakdancin’ Bob shows up in
the comments where there is
Something to learn or something
to do,
Use) Visual Studio to edit اع
صفحه 14:
The Basic Idea
© GPUSpectrogram uses the GPU to
analyze the raw audio data and
oa the levels of various
2 aan new integer
صفحه 15:
Using) Spectrogram Data
° Wel] be using shaders to take this
data and make a visualizer
© Dancing bars with extra effects
© These techniques directly زره ite)
game scenarios 5
© The configurability of the pi 6۵65
the possibilities endless
صفحه 16:
” ۱۹۱۷۷۱۵ ۲
6 006۱۱ ۱
1 ۵ و۵۲6 »رط
3
ردو
Bob's 2 [ ۱۱ ۵
ints
صفحه 17:
Exercise 1; Drawing the
Bays
9٩ 1107
input.Pos.y *=
abs(spectrogram.r)*fScale*g_ fScale;
ANA
صفحه 18:
Exercise 2: Performance
Well be using PIX to do performance
analysis
i Build ۵ ۱
Z, Open PIX (Start->PIX for Windows)
3) File -> New Experiment
4 Navigate to your built exerts:
5, Select “A replayable Dir
stream, saved to ۶ ~
صفحه 19:
Exercise 2: Performance
© When) you exit the application, you'll
have a\log of every D3D command
that Was executed
© We've created a perf event called
~Draw Bars” that will help you find the
actual draw calls for the bays
© Where is a small problem) into, it’s
rendering that’s causingyerless in
pemmornmance,.. a
© لاملا mse? t t 9 f
صفحه 20:
Exercise 2: Debugging —
صفحه 21:
۶,27۱ 2 2 00
© Solution;
pd3dDevice->DrawIndexedInstanced(
(UINT)pSubset->IndexCount, g iNumInstances, 0,
(UINT)pSubset->VertexStart, 0 );
ANA
صفحه 22:
صفحه 23:
Exercise 3; Geometry
زورره او زر زر
@ Solution:
TriStream.Append( output );
صفحه 24:
Exercise 4; More
Parrerileaes
® Well be’ using PIX to see how we can
tweak rendering parameters to
maximize performance
e We've made a custom set of
Variables you) can track in PIX so you
Gan see the values of the Sliders
6 ۱۷/۱ be seeing how cha eee
Values Changes framer
صفحه 25:
Exercise 4: More
2 iae tera
Z, Open PIX (Start->PIX for Windows)
3, File -> New Experiment
A Navigate to your built exercise
5, Click “More Options” =
7. Add all counters under thesPiuging
Coes
صفحه 26:
Exercise 4: More
De 5
صفحه 27:
Exercise 4: More
9۵ ارزو رازم
5 ۲۵ 6۵ 255101 6۵۱۵۳6۵ ۱۱۵5 ۲۵ 0
of the slider Values along the bottom
of the chat
® You can also set the framerate as a
Graphed line
© You can see the framerate
‘Gifect Correlation to man
sliders (Some more tha
صفحه 28:
صفحه 29:
22۲ ۱9 رد ۶,2۱2
© Solution;
tex.x += sin( input.Tex.y*40 )*0.001;
tex.y += sin( input.Tex.y*60 )*0.001;
صفحه 30:
و5۵ 2/22 ۳ ۶2622
© Please open Exercise06.sIn
© Hint; Bob’s hiding in Exercise06.fx
صفحه 31:
Exercise 62 Screen Effects
© Solution (One of many!):
float2 tex = input.Tex.xy*2 - 1;
float texMag = length( tex );
تس ت۱5
float shift = sin(texMag*50.0-g fTime*3)*g fElapsedTime*0.3;
float2 offset = float2(tex.y*shift, -tex.x*shift );
tex *= texMag;
7 i
غ056 حب برمع
۹96
float4 color = BoxFilter( g samLinearCl.
return color * 0.80;
ue
tex = tex/2 + 0.5;
fea pevelch
صفحه 32:
Advanced D3D10
Shader Authoring
Overview
Review of Direct3D 10 and HLSL 4.0
The power of the programmable
pipeline
Guided exercises: Visualizer
Some New D3D10
Features
Completely re-architected from D3D9
for configurability and performance
Geometry Shader
Fixed-function lighting and
transformation now programmable in
HLSL 4.0
Configurable pipeline
Flexible shader signatures
System-generated values
High Level Shader
Language
HLSL is a highly effective language
for writing shaders
Syntax is similar to ‘C’
Preprocessor defines (#define, #ifdef,
etc)
Basic types (float, int, uint, bool, etc)
Operators, variables, functions
Has some important differences
Builtin variables (float4, matrix, etc)
Intrinsic functions (mul, normalize, etc)
Overview of the Pipeline
Effect
Triangles
Shader Constants
Vertex
Shader
Geometry
Shader
Pixel
Shader
Textures / Buffers
Vertex Shader 4.0
Input
Vertices
Shader Constants
System Variables ( VertexID )
Output
It’s up to you now
Color, Texture Coordinates, etc
System-generated Values
Values usable in shaders generated
by the D3D10 runtime
Act exactly like semantics, just tag
your variable and off you go
SV_VertexID
Provided to the VS
SV_InstanceID
Provided to the VS
SV_PrimitiveID
Provided to the GS (or PS if there is no
GS)
Geometry Shader 4.0
Input
Per-primitive data (3 verts for a tri)
System variables ( PrimitiveID )
Output
Points, lines, triangles
Render target index, clip distances
Stream data to a buffer on the GPU
aka stream out
Geometry Shader
Restrictions
Cannot output more than 4096 bytes
of information for each input
primitive
Performance is not guaranteed when
amplifying at this level
Pixel Shader 4.0
Input
Interpolated data from vertex
shader
Output
Pixel color (with alpha)
Optional: depth
What This Means:
Configurability
The real power of Direct3D 10 is that
there are many ways to accomplish
any one task
More and more tasks can be pushed
onto the GPU
Performance/quality tradeoff can be
made on your terms
Guided Exercises:
Visualizer
DirectX 10 - exploitive effects in an
audio visualizer
Roughly based on the
GPUSpectrogram sample in available
in the DirectX SDK
A framework to try out HLSL 4.0 plus
to show:
InstanceIDs
Integer offset samplers
Geometry amplification
Debugging using PIX
Guided Exercises
General Directions
Each effect file guides you
through the exercises.
Breakdancin’ Bob shows up in
the comments where there is
something to learn or something
to do.
Use Visual Studio to edit the
effect and cpp files and to build.
If you get stuck or need help,
raise your hand. A proctor will
assist you.
The Basic Idea
GPUSpectrogram uses the GPU to
analyze the raw audio data and
evaluate the levels of various
frequency ranges
To check this code out and see the new integer
instruction set in action, check out the
GPUSpectrogram sample or GPUSpectrogram.fx
included in the workshop
Using Spectrogram Data
We’ll be using shaders to take this
data and make a visualizer
Dancing bars with extra effects
These techniques directly apply to
game scenarios
The configurability of the pipeline makes
the possibilities endless
Exercise 1: Drawing the
Bars
Please open Exercise01.sln
Hint: Bob’s hiding in Exercise01.fx
Exercise 1: Drawing the
Bars
Solution:
input.Pos.y *=
abs(spectrogram.r)*fScale*g_fScale;
Exercise 2: Performance
We’ll be using PIX to do performance
analysis
1. Build Exercise02.sln
2. Open PIX (Start->PIX for Windows)
3. File -> New Experiment
4. Navigate to your built exercise
5. Select “A replayable Direct3D call
stream, saved to file:”
6. Enter a file name ending in “.PIXrun”
7. Click “Start Experiment”
Exercise 2: Performance
When you exit the application, you’ll
have a log of every D3D command
that was executed
We’ve created a perf event called
“Draw Bars” that will help you find the
actual draw calls for the bars.
There is a small problem in how it’s
rendering that’s causing a loss in
performance…
You might want to look in
Exercise02.cpp
Exercise 2: Debugging
Exercise 2: Performance
Solution:
pd3dDevice->DrawIndexedInstanced(
(UINT)pSubset->IndexCount, g_iNumInstances, 0,
(UINT)pSubset->VertexStart, 0 );
Exercise 3: Geometry
Amplification
Please open Exercise3.sln
Hint: Bob’s hiding in Exercise3.fx
Exercise 3: Geometry
Amplification
Solution:
TriStream.Append( output );
Exercise 4: More
Performance
We’ll be using PIX to see how we can
tweak rendering parameters to
maximize performance
We’ve made a custom set of
variables you can track in PIX so you
can see the values of the sliders
We’ll be seeing how changing these
values changes framerate
Exercise 4: More
1.
Build Exercise04.sln
Performance
2. Open PIX (Start->PIX for Windows)
3. File -> New Experiment
4. Navigate to your built exercise
5. Click “More Options”
6. For CounterSet, select “(Custom)”
7. Add all counters under the “Pluging
Counters”
8. Click “OK”
9. Click “Start Experiment”
Exercise 4: More
Debugging
Exercise 4: More
Debugging
You can assign colored lines to each
of the slider values along the bottom
of the chat
You can also set the framerate as a
graphed line
You can see the framerate has a
direct correlation to many of these
sliders (some more than others)
Exercise 5: Floor Effect
Please open Exercise05.sln
Hint: Bob’s hiding in Exercise05.fx
Exercise 5: Floor Effect
Solution:
tex.x += sin( input.Tex.y*40 )*0.001;
tex.y += sin( input.Tex.y*60 )*0.001;
Exercise 6: Screen Effects
Please open Exercise06.sln
Hint: Bob’s hiding in Exercise06.fx
Exercise 6: Screen Effects
Solution (One of many!):
float2 tex = input.Tex.xy*2 - 1;
float texMag = length( tex );
tex /= texMag;
float shift = sin(texMag*50.0-g_fTime*3)*g_fElapsedTime*0.3;
float2 offset = float2(tex.y*shift, -tex.x*shift );
tex *= texMag;
tex += offset;
tex = tex/2 + 0.5;
float4 color = BoxFilter( g_samLinearClamp, tex, 3 );
return color * 0.80;
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This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
