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StonesThrow
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StonesThrow
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05:08 PM
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02-05-2019,
06:49 AM
Dark Photon replied to a thread
More flexible DrawElementsInstanced()
in
OpenGL: Advanced Coding
Good catch on that last one. Definitely ambiguous behavior and worthy of a spec bug report.
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6 replies | 603 view(s)
02-04-2019,
08:11 PM
Dark Photon replied to a thread
Comparison Compute Shader - Other Strategies
in
OpenGL: Basic Coding
Without details on a specific technique, we can only guess. Best guess: Memory access patterns. One pro for 2D or 3D textures vs. SSBOs is...
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5 replies | 413 view(s)
02-04-2019,
07:57 PM
Dark Photon replied to a thread
Does the latest driver of Intel GMA 3150 supports OpenGL 2.x in Windows?
in
OpenGL: Drivers
Your best option may be the mesa-users mailing list. Also, read this page. Depending on how those emulators were built, you might try copying...
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6 replies | 2956 view(s)
02-04-2019,
07:31 PM
Dark Photon replied to a thread
More flexible DrawElementsInstanced()
in
OpenGL: Advanced Coding
One minor point (check me on this). With Indirect draw calls, I'm pretty sure that the indirect parameter is always a buffer offset. That is (in...
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6 replies | 603 view(s)
02-04-2019,
06:37 AM
Dark Photon replied to a thread
How to update OpenGL on Windows XP
in
OpenGL: Windows
Websearch. Or post your GPU make/model here and we might be able to help you out. Here are a few OpenGL capability databases that you might check...
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5 replies | 724 view(s)
02-03-2019,
07:54 AM
Dark Photon replied to a thread
How to update OpenGL on Windows XP
in
OpenGL: Windows
See Getting Started for GPU driver download links. XP is very old now. You may or may not even be able to get graphics drivers at this point. ...
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5 replies | 724 view(s)
02-02-2019,
07:27 PM
Dark Photon replied to a thread
Freeglut -> VSync Problem
in
OpenGL: Basic Coding
Great! wglSwapIntervalEXT (1) but that's the default. As you found out though, the driver control panel can completely override what the...
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4 replies | 377 view(s)
02-02-2019,
04:25 PM
Dark Photon replied to a thread
Alternate the Triangles every Consequtive Row.
in
OpenGL: Basic Coding
There shouldn't be an appearance difference (if done properly). It's a performance thing.
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3 replies | 226 view(s)
02-02-2019,
04:02 PM
Dark Photon replied to a thread
Freeglut -> VSync Problem
in
OpenGL: Basic Coding
Do you see screen tearing? Are you calling glutInitDisplayMode with GLUT_DOUBLE before calling glutCreateWindow (creates a double-buffered render...
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4 replies | 377 view(s)
02-02-2019,
03:35 PM
Dark Photon replied to a thread
Help Coverting Glew Grid to Glad Grid.
in
OpenGL: Basic Coding
Yes. It's in the spec. OpenGL 3.0 deprecated a bunch of the old stuff. OpenGL 3.1 split the spec into two versions (and GL context types): core and...
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10 replies | 311 view(s)
02-02-2019,
03:13 PM
Dark Photon replied to a thread
Alternate the Triangles every Consequtive Row.
in
OpenGL: Basic Coding
Could be to increase the Vertex Transform cache reuse, particularly if indexed triangles are being used here. (Translation: To reduce the number of...
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3 replies | 226 view(s)
02-02-2019,
07:36 AM
Dark Photon replied to a thread
Help Coverting Glew Grid to Glad Grid.
in
OpenGL: Basic Coding
It's fine, but look at it as "training wheels". It makes it easier to get something going without understanding as much of what's going on. But in...
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10 replies | 311 view(s)
02-01-2019,
05:30 PM
Dark Photon replied to a thread
Occlusion Culling using HiZ test: optimization question.
in
OpenGL: Basic Coding
For us to be able to help you, you need to describe a more detail how your frustum culling pass and draw pass are intended to work. One way to do...
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10 replies | 372 view(s)
01-30-2019,
09:18 AM
Dark Photon started a thread
Pointers for GLSL
in
OpenGL: Advanced Coding
Slick. GLSL/SPIR-V/Vulkan pointer support in shaders: Pointer support in Vulkan shaders (Tobias Hector) Task list for...
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0 replies | 154 view(s)
01-29-2019,
05:56 PM
Dark Photon replied to a thread
A question concerning OpenGL with Intel/Nvidia Win10-notebook
in
OpenGL: Drivers
Does your laptop have Optimus? If so, have you owned a laptop with Optimus before? With this type of laptop, the Intel GPU always owns and...
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2 replies | 172 view(s)
01-28-2019,
07:05 AM
Dark Photon replied to a thread
multidrawArraysindirect, cast several ranges in a single call
in
OpenGL: Basic Coding
There seems to be some unstated assumption behind your question. We need to get that stated here. You said you are CPU culling so that the draws...
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3 replies | 137 view(s)
01-27-2019,
08:02 PM
Dark Photon replied to a thread
Occlusion Culling using HiZ test: optimization question.
in
OpenGL: Basic Coding
Occlusion queries with Conditional Rendering would work, but might not perform as well as you'd like for thousands of objects. Let me ask you...
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10 replies | 372 view(s)
01-26-2019,
07:24 AM
Dark Photon replied to a thread
Is that possible to make graphics with OpenGL that works without OS ?
in
OpenGL: User Software
The general sequence of control (and screens you typically see) when you boot a PC from a local disk is: BIOS (and Device ROMs) -> Boot loader(s)...
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2 replies | 346 view(s)
01-25-2019,
06:37 AM
Dark Photon replied to a thread
Questions about minimizing draw calls and rendering system design in generally
in
OpenGL: Basic Coding
First, the goal is really about meeting some performance target, not minimizing draw calls. What is your performance target? Where are you now...
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1 replies | 118 view(s)
01-25-2019,
06:06 AM
Dark Photon replied to a thread
Occlusion Culling using HiZ test: optimization question.
in
OpenGL: Basic Coding
That's what Occlusion queries are for. There are other ways, but this is probably the simplest.
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10 replies | 372 view(s)
01-22-2019,
07:38 PM
Dark Photon replied to a thread
GPU vertex dispatch for MultiDrawIndirect and/or Instanced draw calls
in
OpenGL: Advanced Coding
Thanks Alfonse! Great info, and a pretty strong argument that MDI draws aren't packed into shared thread groups. Doing more reading up on this...
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2 replies | 247 view(s)
01-22-2019,
03:18 PM
Dark Photon started a thread
GPU vertex dispatch for MultiDrawIndirect and/or Instanced draw calls
in
OpenGL: Advanced Coding
Doing some reading, I see indications (but not outright statements) in GPU vendor documentation that GPUs do not pack: vertices across...
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2 replies | 247 view(s)
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