diff options
| author | Nicholas Miell <[email protected]> | 2011-09-19 23:16:59 -0700 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2011-11-01 11:37:10 +0100 |
| commit | 740467dd62962b4effdaf51e38edc032e2a39487 (patch) | |
| tree | a0b9df048ac58d99574fbb5423a327946a02b46f /src/mesa/main/fog.c | |
| parent | 7f08248c2e2d7e862e88db2d0008efca3c276512 (diff) | |
mesa: Add the basics for the NV_fog_distance extension
No driver implements it yet.
Diffstat (limited to 'src/mesa/main/fog.c')
| -rw-r--r-- | src/mesa/main/fog.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mesa/main/fog.c b/src/mesa/main/fog.c index 88aa31a7fcb..d65add9302d 100644 --- a/src/mesa/main/fog.c +++ b/src/mesa/main/fog.c @@ -172,6 +172,19 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params ) ctx->Fog.FogCoordinateSource = p; break; } + case GL_FOG_DISTANCE_MODE_NV: { + GLenum p = (GLenum) (GLint) *params; + if (!ctx->Extensions.NV_fog_distance || + (p != GL_EYE_RADIAL_NV && p != GL_EYE_PLANE && p != GL_EYE_PLANE_ABSOLUTE_NV)) { + _mesa_error(ctx, GL_INVALID_ENUM, "glFog"); + return; + } + if (ctx->Fog.FogDistanceMode == p) + return; + FLUSH_VERTICES(ctx, _NEW_FOG); + ctx->Fog.FogDistanceMode = p; + break; + } default: _mesa_error( ctx, GL_INVALID_ENUM, "glFog" ); return; @@ -201,4 +214,5 @@ void _mesa_init_fog( struct gl_context * ctx ) ctx->Fog.ColorSumEnabled = GL_FALSE; ctx->Fog.FogCoordinateSource = GL_FRAGMENT_DEPTH_EXT; ctx->Fog._Scale = 1.0f; + ctx->Fog.FogDistanceMode = GL_EYE_PLANE_ABSOLUTE_NV; } |