+typedef enum glsl_attrib_e
+{
+ GLSLATTRIB_POSITION = 0,
+ GLSLATTRIB_COLOR = 1,
+ GLSLATTRIB_TEXCOORD0 = 2,
+ GLSLATTRIB_TEXCOORD1 = 3,
+ GLSLATTRIB_TEXCOORD2 = 4,
+ GLSLATTRIB_TEXCOORD3 = 5,
+ GLSLATTRIB_TEXCOORD4 = 6,
+ GLSLATTRIB_TEXCOORD5 = 7,
+ GLSLATTRIB_TEXCOORD6 = 8,
+ GLSLATTRIB_TEXCOORD7 = 9,
+}
+glsl_attrib;
+
+typedef enum shaderlanguage_e
+{
+ SHADERLANGUAGE_GLSL,
+ SHADERLANGUAGE_COUNT
+}
+shaderlanguage_t;
+
+// this enum selects which of the glslshadermodeinfo entries should be used
+typedef enum shadermode_e
+{
+ SHADERMODE_GENERIC, ///< (particles/HUD/etc) vertex color, optionally multiplied by one texture
+ SHADERMODE_POSTPROCESS, ///< postprocessing shader (r_glsl_postprocess)
+ SHADERMODE_DEPTH_OR_SHADOW, ///< (depthfirst/shadows) vertex shader only
+ SHADERMODE_FLATCOLOR, ///< (lightmap) modulate texture by uniform color (q1bsp, q3bsp)
+ SHADERMODE_VERTEXCOLOR, ///< (lightmap) modulate texture by vertex colors (q3bsp)
+ SHADERMODE_LIGHTMAP, ///< (lightmap) modulate texture by lightmap texture (q1bsp, q3bsp)
+ SHADERMODE_LIGHTDIRECTIONMAP_MODELSPACE, ///< (lightmap) use directional pixel shading from texture containing modelspace light directions (q3bsp deluxemap)
+ SHADERMODE_LIGHTDIRECTIONMAP_TANGENTSPACE, ///< (lightmap) use directional pixel shading from texture containing tangentspace light directions (q1bsp deluxemap)
+ SHADERMODE_LIGHTDIRECTIONMAP_FORCED_LIGHTMAP, // forced deluxemapping for lightmapped surfaces
+ SHADERMODE_LIGHTDIRECTIONMAP_FORCED_VERTEXCOLOR, // forced deluxemapping for vertexlit surfaces
+ SHADERMODE_LIGHTGRID, ///< (lightmap) use directional pixel shading from lightgrid data (q3bsp)
+ SHADERMODE_LIGHTDIRECTION, ///< (lightmap) use directional pixel shading from fixed light direction (q3bsp)
+ SHADERMODE_LIGHTSOURCE, ///< (lightsource) use directional pixel shading from light source (rtlight)
+ SHADERMODE_REFRACTION, ///< refract background (the material is rendered normally after this pass)
+ SHADERMODE_WATER, ///< refract background and reflection (the material is rendered normally after this pass)
+ SHADERMODE_DEFERREDGEOMETRY, ///< (deferred) render material properties to screenspace geometry buffers
+ SHADERMODE_DEFERREDLIGHTSOURCE, ///< (deferred) use directional pixel shading from light source (rtlight) on screenspace geometry buffers
+ SHADERMODE_COUNT
+}
+shadermode_t;
+
+typedef enum shaderpermutation_e
+{
+ SHADERPERMUTATION_DIFFUSE = 1<<0, ///< (lightsource) whether to use directional shading
+ SHADERPERMUTATION_VERTEXTEXTUREBLEND = 1<<1, ///< indicates this is a two-layer material blend based on vertex alpha (q3bsp)
+ SHADERPERMUTATION_VIEWTINT = 1<<2, ///< view tint (postprocessing only), use vertex colors (generic only)
+ SHADERPERMUTATION_COLORMAPPING = 1<<3, ///< indicates this is a colormapped skin
+ SHADERPERMUTATION_SATURATION = 1<<4, ///< saturation (postprocessing only)
+ SHADERPERMUTATION_FOGINSIDE = 1<<5, ///< tint the color by fog color or black if using additive blend mode
+ SHADERPERMUTATION_FOGOUTSIDE = 1<<6, ///< tint the color by fog color or black if using additive blend mode
+ SHADERPERMUTATION_FOGHEIGHTTEXTURE = 1<<7, ///< fog color and density determined by texture mapped on vertical axis
+ SHADERPERMUTATION_FOGALPHAHACK = 1<<8, ///< fog color and density determined by texture mapped on vertical axis
+ SHADERPERMUTATION_GAMMARAMPS = 1<<9, ///< gamma (postprocessing only)
+ SHADERPERMUTATION_CUBEFILTER = 1<<10, ///< (lightsource) use cubemap light filter
+ SHADERPERMUTATION_GLOW = 1<<11, ///< (lightmap) blend in an additive glow texture
+ SHADERPERMUTATION_BLOOM = 1<<12, ///< bloom (postprocessing only)
+ SHADERPERMUTATION_SPECULAR = 1<<13, ///< (lightsource or deluxemapping) render specular effects
+ SHADERPERMUTATION_POSTPROCESSING = 1<<14, ///< user defined postprocessing (postprocessing only)
+ SHADERPERMUTATION_REFLECTION = 1<<15, ///< normalmap-perturbed reflection of the scene infront of the surface, preformed as an overlay on the surface
+ SHADERPERMUTATION_OFFSETMAPPING = 1<<16, ///< adjust texcoords to roughly simulate a displacement mapped surface
+ SHADERPERMUTATION_OFFSETMAPPING_RELIEFMAPPING = 1<<17, ///< adjust texcoords to accurately simulate a displacement mapped surface (requires OFFSETMAPPING to also be set!)
+ SHADERPERMUTATION_SHADOWMAP2D = 1<<18, ///< (lightsource) use shadowmap texture as light filter
+ SHADERPERMUTATION_SHADOWMAPVSDCT = 1<<19, ///< (lightsource) use virtual shadow depth cube texture for shadowmap indexing
+ SHADERPERMUTATION_SHADOWMAPORTHO = 1<<20, ///< (lightsource) use orthographic shadowmap projection
+ SHADERPERMUTATION_DEFERREDLIGHTMAP = 1<<21, ///< (lightmap) read Texture_ScreenDiffuse/Specular textures and add them on top of lightmapping
+ SHADERPERMUTATION_ALPHAKILL = 1<<22, ///< (deferredgeometry) discard pixel if diffuse texture alpha below 0.5, (generic) apply global alpha
+ SHADERPERMUTATION_REFLECTCUBE = 1<<23, ///< fake reflections using global cubemap (not HDRI light probe)
+ SHADERPERMUTATION_NORMALMAPSCROLLBLEND = 1<<24, ///< (water) counter-direction normalmaps scrolling
+ SHADERPERMUTATION_BOUNCEGRID = 1<<25, ///< (lightmap) use Texture_BounceGrid as an additional source of ambient light
+ SHADERPERMUTATION_BOUNCEGRIDDIRECTIONAL = 1<<26, ///< (lightmap) use 16-component pixels in bouncegrid texture for directional lighting rather than standard 4-component
+ SHADERPERMUTATION_TRIPPY = 1<<27, ///< use trippy vertex shader effect
+ SHADERPERMUTATION_DEPTHRGB = 1<<28, ///< read/write depth values in RGB color coded format for older hardware without depth samplers
+ SHADERPERMUTATION_ALPHAGEN_VERTEX = 1<<29, ///< alphaGen vertex
+ SHADERPERMUTATION_SKELETAL = 1<<30, ///< (skeletal models) use skeletal matrices to deform vertices (gpu-skinning)
+ SHADERPERMUTATION_OCCLUDE = 1<<31, ///< use occlusion buffer for corona
+ SHADERPERMUTATION_COUNT = 32 ///< size of shaderpermutationinfo array
+}
+shaderpermutation_t;
+