diff options
| author | Brian <brian.paul@tungstengraphics.com> | 2007-11-23 12:01:57 -0700 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2007-11-23 12:01:57 -0700 |
| commit | 999b55663a09d9669a9d14c5aadfa84e6dcba288 (patch) | |
| tree | 77ca8f5e8da90417188e59dc64cc15aa7bd47990 /src/mesa/swrast | |
| parent | ba162438841ecc6f0227b149ded66916911d9acf (diff) | |
Consolidate texture fetch code and use partial derivatives when possible.
Diffstat (limited to 'src/mesa/swrast')
| -rw-r--r-- | src/mesa/swrast/s_fragprog.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c index 474aab3aa2..4067fd6886 100644 --- a/src/mesa/swrast/s_fragprog.c +++ b/src/mesa/swrast/s_fragprog.c @@ -46,8 +46,7 @@ fetch_texel( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda, lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod); /* XXX use a float-valued TextureSample routine here!!! */ - swrast->TextureSample[unit](ctx, texObj, - 1, (const GLfloat (*)[4]) texcoord, + swrast->TextureSample[unit](ctx, texObj, 1, (const GLfloat (*)[4]) texcoord, &lambda, &rgba); color[0] = CHAN_TO_FLOAT(rgba[0]); color[1] = CHAN_TO_FLOAT(rgba[1]); @@ -63,7 +62,7 @@ fetch_texel( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda, static void fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4], const GLfloat texdx[4], const GLfloat texdy[4], - GLuint unit, GLfloat color[4] ) + GLfloat lodBias, GLuint unit, GLfloat color[4] ) { SWcontext *swrast = SWRAST_CONTEXT(ctx); const struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; @@ -72,15 +71,17 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4], const GLfloat texH = (GLfloat) texImg->HeightScale; GLchan rgba[4]; - GLfloat lambda = _swrast_compute_lambda(texdx[0], texdy[0], /* ds/dx, ds/dy */ - texdx[1], texdy[1], /* dt/dx, dt/dy */ - texdx[3], texdy[2], /* dq/dx, dq/dy */ - texW, texH, - texcoord[0], texcoord[1], texcoord[3], - 1.0F / texcoord[3]); + GLfloat lambda + = _swrast_compute_lambda(texdx[0], texdy[0], /* ds/dx, ds/dy */ + texdx[1], texdy[1], /* dt/dx, dt/dy */ + texdx[3], texdy[2], /* dq/dx, dq/dy */ + texW, texH, + texcoord[0], texcoord[1], texcoord[3], + 1.0F / texcoord[3]) + lodBias; - swrast->TextureSample[unit](ctx, ctx->Texture.Unit[unit]._Current, - 1, (const GLfloat (*)[4]) texcoord, + lambda = CLAMP(lambda, texObj->MinLod, texObj->MaxLod); + + swrast->TextureSample[unit](ctx, texObj, 1, (const GLfloat (*)[4]) texcoord, &lambda, &rgba); color[0] = CHAN_TO_FLOAT(rgba[0]); color[1] = CHAN_TO_FLOAT(rgba[1]); |