Void Shader
Tillie
The main characteristic of VOID Shaders (1.21, 1.20.1) is the natural light illumination they generate, which is usually less important for other shaders. The brightness of your screen will also depend on the position of the cursor, some sources of intense light may rise to partially blind you if you look directly at them. Sunlight will be more realistic, you will be able to admire sunbeams that will punctually form a light rainbow. At night, the moon star also emits rays that give night landscapes uncertainty, oscillating between calm and mystique. During the day, the rays pass beautifully through the foliage and create realistic shadows, and at night all light sources are of great importance, since without them the visibility will become almost zero.
Despite their high popularity in the Minecraft community, shaders have always been reserved for players with very good PC configurations. Those who deeply modify the graphics and appearance of Minecraft need the most important resources. VOID shaders is more accessible and should work on most computers. Their creator, DatWeirdPerson, came up with the idea to design them after receiving his first computer, a machine with low power consumption that limited playing with shaders. Having a low-performance PC, he created VOID Shaders for small configurations. These shaders have their own style and perform their graphic role perfectly.
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Every shader program requires at minimum both a vertex and fragment/pixel shader. Without the vertex shader (when you comment it out) no vertices are passed on, which means no primitives are generated, and thus no primitives to fill with your fragment shader.
Is this possible to make camera draw a clear space in the place of specific object? I want my first camera to draw only one layer with specific items, and secondary camera to draw entire game world with void hole in this place including player covering it or any other items being able to cover it.
The reason for this is a special portal. I want to apply different post processing for the entire game and different for portal's interior. If I draw world and portal in the opposite way, portal is showing but it's always visible on top of everything, so it's simply uncoverable...
You could just fill the depth buffer at the portal position before you draw anything in the secondary camera. You would just need to define portal area (where it should be visible) and cut a hole with it by rendering it with the second camera and a shader like that one:
What I think is happening, is the shaderdesigner is send the gl_Color from the opengl application to the shader with a black value, and I have no clue how to change that value. I have tried messing around with ALL the menus, options, anything relates to changing color and nothing is working. Why is my model black and how can I fix it?
OK it does not work for me as well. You shader is correect I have checked it in RenderMonkey which is much more stable. Seems to me that there are some problems with the ShaderDesigner. For me, I even cant see the contents of the vertex/fragment shaders (editor area is all white).
O ok. Since you said it appears to work in RenderMonkey, may I ask what color is sent through gl_Color as default to the shader? And how do you change the value of gl_Color passed to the shader in RenderMonkey?
In the old GLSL shaders (pre OpenGL 3.0), you can access the fixed function light position using gl_LightSource[0].position
BUT I dont think RenderMonkey passes any GL lights nor does it exposes these to your workspace.
I believe I have found the problem Panda code.
In panda\src\glstuff\glShaderContext_src.I, the uses_custom_vertex_arrays function has been changed to always return true. In this case, most of my object with GLSL shader on them are no longer rendering. It looks like any object with a transform on it is not rendering.
If I revert the code to how it was in the previous revision, with GLSL shaders returning false and Cg shaders returning true, then the objects with GLSL shaders work properly as they did before.
Not sure if it is related, but I also have a problem with DX9 spamming warnings and it looks like it being forced to use parasite buffers. I noticed that the function which determines if render-to-texture is supported or not changed since I synced up that code, so that was my first suspect. I filed a bug for that a few days ago.
In panda/src/glstuff/glGraphicsStateGuardian_src.cxx GLGraphicsStateGuardian::begin_draw_primitives - it assumes this is a Cg shader and not GLSL if GLShaderContext ::uses_custom_vertex_arrays returns true.
If I force uses_custom_vertex_arrays() to return false, the shader works. But if it uses a a texure (uniform sampler2D tex_0), the texture is all black. So something else seems to be broken with texture bindings when using GLSL.
Somewhat old thread here, but I was working on something involving GLSL today and was running into some problems along the lines described here. After staring at the C++ code for (quite) a while, I now believe that this is not actually a bug.
@CharlesDesignHello the mainImage is thought to make it easy to copy +paste from shadertoy mainImage to any kind of Shadercompiler like Processing. It is necessary to have a main function in the body of a shader. Shadertoy just hide it from you.
The Abyssal Void Shader was originally designed for my purchased copy of Sillurgy's "Abyssal Rapace V3" (awesome model, by the way). In general, this shader works quite well on any matte black avatars.
The shader is intended to be dark and difficult to see. You can partly customize this, such as by changing the glow color or the sharpness of that glow. It's a bit like rim lighting, but it uses the normals of the model instead of per-pixel colors, so it won't be a cartoony line like you might have come to expect from other shaders.
If you are looking to utilize the existing materials/shaders then you need to rework your shader to use shader chunks (override the PlayCanvas internal shaders) instead of creating a full custom shader.
There has been work recently in the engine to split the internal shaders to frontend / backend, to make it easier to add lighting support to custom shaders. Someone from the PlayCanvas team may be able to offer some insight on how to use that @Elliott @mvaligursky.
When passed as a ccall argument (either as a Ptr or Ref type), a Ref object will be
converted to a native pointer to the data it references. For most T, or when
converted to a PtrCvoid, this is a pointer to the object data. When T is an isbits
type, this value may be safely mutated, otherwise mutation is strictly undefined
behavior
However, when I compiled my program, I got some linker errors seemingly related to the FShader class which seemed a little surprising since I assume that the class is necessary for all of the built-in shaders and related objects.
Be careful with mixing ints (like 1 2 3 4) and floats (like 0.1 0.5 1.9) in shader programs (which have more strict rules for types compared to Lua). Generally you want everything to be a float. So if you want to have a 1 you need to write it as either 1.0 or 1. as shorthand (but I prefer to include the 0 for the sake of visual clarity).
No words to say how great is this article! Thank you so much!
I am trying to back to game development, working in a turn based game(just started this week), I will do a post on this soon to try and keep myself motivated
The following example creates a vertex shader program using the supplied source code. Once compiled and linked, the shader program is activated in the current QOpenGLContext by calling QOpenGLShaderProgram::bind():
Shader programs can be difficult to reuse across OpenGL implementations because of varying levels of support for standard vertex attributes and uniform variables. In particular, GLSL/ES lacks all of the standard variables that are present on desktop OpenGL systems: gl_Vertex, gl_Normal, gl_Color, and so on. Desktop OpenGL lacks the variable qualifiers highp, mediump, and lowp.
This makes it possible to run most GLSL/ES shader programs on desktop systems. The programmer should restrict themselves to just features that are present in GLSL/ES, and avoid standard variable names that only work on the desktop.
Binary shaders may be specified using glShaderBinary() on the return value from QOpenGLShader::shaderId(). The QOpenGLShader instance containing the binary can then be added to the shader program with addShader() and linked in the usual fashion with link().
Binary programs may be specified using glProgramBinaryOES() on the return value from programId(). Then the application should call link(), which will notice that the program has already been specified and linked, allowing other operations to be performed on the shader program. The shader program's id can be explicitly created using the create() function.
As of Qt 5.9, support for caching program binaries on disk is built in. To enable this, switch to using addCacheableShaderFromSourceCode() and addCacheableShaderFromSourceFile(). With an OpenGL ES 3.x context or support for GL_ARB_get_program_binary, this will transparently cache program binaries under QStandardPaths::GenericCacheLocation or QStandardPaths::CacheLocation. When support is not available, calling the cacheable function variants is equivalent to the normal ones.
Registers the shader of the specified type and source to this program. Unlike addShaderFromSourceCode(), this function does not perform compilation. Compilation is deferred to link(), and may not happen at all, because link() may potentially use a program binary from Qt's shader disk cache. This will typically lead to a significant increase in performance.
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