Make the sampler-related enums independent of OpenGL constants

[libs/gl.git] / source / core / sampler.cpp

diff --git a/source/core/sampler.cpp b/source/core/sampler.cpp
index c810789b605130626c1e84d4f27ecd9f7ce6a81e..45db298064bce9ade85a978f52ed8bebd70d743a 100644 (file)
--- a/source/core/sampler.cpp
+++ b/source/core/sampler.cpp
@@ -36,17 +36,17 @@ Sampler::Sampler():
 void Sampler::update() const
 {
        if(dirty_params&MIN_FILTER)
-               glSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, min_filter);
+               glSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, get_gl_filter(min_filter));
        if(dirty_params&MAG_FILTER)
-               glSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, mag_filter);
+               glSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, get_gl_filter(mag_filter));
        if(dirty_params&MAX_ANISOTROPY)
                glSamplerParameterf(id, GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
        if(dirty_params&WRAP_S)
-               glSamplerParameteri(id, GL_TEXTURE_WRAP_S, wrap_s);
+               glSamplerParameteri(id, GL_TEXTURE_WRAP_S, get_gl_wrap(wrap_s));
        if(dirty_params&WRAP_T)
-               glSamplerParameteri(id, GL_TEXTURE_WRAP_T, wrap_t);
+               glSamplerParameteri(id, GL_TEXTURE_WRAP_T, get_gl_wrap(wrap_t));
        if(dirty_params&WRAP_R)
-               glSamplerParameteri(id, GL_TEXTURE_WRAP_R, wrap_r);
+               glSamplerParameteri(id, GL_TEXTURE_WRAP_R, get_gl_wrap(wrap_r));
        if(dirty_params&BORDER_COLOR)
                glSamplerParameterfv(id, GL_TEXTURE_BORDER_COLOR, &border_color.r);
        if(dirty_params&COMPARE)
@@ -218,6 +218,32 @@ bool is_mipmapped(TextureFilter filter)
                filter==LINEAR_MIPMAP_NEAREST || filter==LINEAR_MIPMAP_LINEAR);
 }
 
+GLenum get_gl_filter(TextureFilter filter)
+{
+       switch(filter)
+       {
+       case NEAREST: return GL_NEAREST;
+       case LINEAR: return GL_LINEAR;
+       case NEAREST_MIPMAP_NEAREST: return GL_NEAREST_MIPMAP_NEAREST;
+       case NEAREST_MIPMAP_LINEAR: return GL_NEAREST_MIPMAP_LINEAR;
+       case LINEAR_MIPMAP_NEAREST: return GL_LINEAR_MIPMAP_NEAREST;
+       case LINEAR_MIPMAP_LINEAR: return GL_LINEAR_MIPMAP_LINEAR;
+       default: throw invalid_argument("get_gl_filter");
+       }
+}
+
+GLenum get_gl_wrap(TextureWrap wrap)
+{
+       switch(wrap)
+       {
+       case REPEAT: return GL_REPEAT;
+       case CLAMP_TO_EDGE: return GL_CLAMP_TO_EDGE;
+       case CLAMP_TO_BORDER: return GL_CLAMP_TO_BORDER;
+       case MIRRORED_REPEAT: return GL_MIRRORED_REPEAT;
+       default: throw invalid_argument("get_gl_wrap");
+       }
+}
+
 void operator>>(const LexicalConverter &c, TextureFilter &tf)
 {
        if(c.get()=="NEAREST")