Many functions (including glUniform*) can take floating-point arguments, integer arguments, or other types. OpenGL is a C API, and C does not support function overloading; the names of each function variant must be distinct. The suffix of the function call denotes the type shown in Table 2-4.
The cubemap works fine without using any sampler2D and if the unit in glslCubeMap is not the same than the shader.set("cubemap", /*number here*/) than the cube map will not show. pgl.activeTexture(PGL.TEXTURE0 + unit); Could be the problem, but if our unit is bigger than the amount of samplers2D that Processing uses, than we should be fine, but ...
gamedesigninitiative at cornell university the Scope of Today’s Talk ! Basic coverage of OpenGL ES (2.0) ! Mobile version of OpenGL on iOS, Android
My problem is: glGetUniformLocation() always give me -1. Althogh it fails to set the sampler, the shader program works almost correct, excepts only the first texture is working. Thanks a lot! This is the vertex program: #version 130 uniform int test_var; uniform sampler2D sp_surface; uniform sampler2D sp_cloud; uniform sampler2D sp_bump; out vec3 normal_v; out vec3 light_v; out vec3 eye_v ...
OpenGL Notes - Free download as Text File (.txt), PDF File (.pdf) or read online for free. This is a collection of notes on basic OpenGL ES 2.0. Incomplete, but might be helpful to the beginner.
// sampler2D provides access // to the texture image in vec2 texCoord; ... integer values on the C++ client side, so we call glUniform 1i 15. Texture preferences
GPU编程——通信 • attribute – 在顶点着色器中声明 – 在应用程序中获取变量地址 – glBegin/glEnd之间设置属性值 GLint glGetAttribLocation(GLuint program,char *name);
Attempting to add a new sampler2D uniform to the template transition freezes the editor (in Chrome 37.0.2008.2 dev) uniform sampler2D luma; I have a wipe transition that can be configured with dozens of unique luma textures to create unique transitions, if glsl.io supported additional texture uniforms this could be ported.
You probably wondered why the sampler2D variable is a uniform if we didn't even assign it some value with glUniform. Using glUniform 1i we can actually assign a location value to the texture sampler so we can set multiple textures at once in a fragment shader.