shader_update_envmap   xtlang


Defined in:  https://github.com/digego/extempore/tree/v0.8.9/libs/external/graphics-pipeline.xtm

Implementation

;; where texture is expected to be a CUBE texture
(bind-func shader_update_envmap
  (lambda (shader:ShaderProgram* textureUnit texture:Texture*)
    (if (or (null? texture) (< (id texture) 1))
        (begin
          (glUniform1i (glGetUniformLocation (id shader) "isEnvMapped") 0)
          (glUniform1f (glGetUniformLocation (id shader) "envMapWeight") ENV_MAP_WEIGHT)
          (glUniform1i (glGetUniformLocation (id shader) "envMap") textureUnit)
          void)
        (begin
          (bind_cube texture textureUnit)
          (glUniform1i (glGetUniformLocation (id shader) "isEnvMapped") 1)
          (glUniform1f (glGetUniformLocation (id shader) "envMapWeight") ENV_MAP_WEIGHT)
          (glUniform1i (glGetUniformLocation (id shader) "envMap") textureUnit)
          void))
    (gl_print_error "Error setting up envmap!")
    void))


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