diff options
Diffstat (limited to 'src/mesa/swrast/s_texture.c')
| -rw-r--r-- | src/mesa/swrast/s_texture.c | 139 |
1 files changed, 121 insertions, 18 deletions
diff --git a/src/mesa/swrast/s_texture.c b/src/mesa/swrast/s_texture.c index b562a0037e9..2a7d3db460e 100644 --- a/src/mesa/swrast/s_texture.c +++ b/src/mesa/swrast/s_texture.c @@ -1,4 +1,4 @@ -/* $Id: s_texture.c,v 1.10 2001/02/07 03:55:31 brianp Exp $ */ +/* $Id: s_texture.c,v 1.11 2001/02/17 18:41:01 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -155,6 +155,58 @@ +/* + * Get texture palette entry. + */ +static void +palette_sample(const GLcontext *ctx, + const struct gl_texture_object *tObj, + GLint index, GLchan rgba[4] ) +{ + const GLchan *palette; + GLenum format; + + if (ctx->Texture.SharedPalette) { + ASSERT(!ctx->Texture.Palette.FloatTable); + palette = (const GLchan *) ctx->Texture.Palette.Table; + format = ctx->Texture.Palette.Format; + } + else { + ASSERT(!tObj->Palette.FloatTable); + palette = (const GLchan *) tObj->Palette.Table; + format = tObj->Palette.Format; + } + + switch (format) { + case GL_ALPHA: + rgba[ACOMP] = palette[index]; + return; + case GL_LUMINANCE: + case GL_INTENSITY: + rgba[RCOMP] = palette[index]; + return; + case GL_LUMINANCE_ALPHA: + rgba[RCOMP] = palette[(index << 1) + 0]; + rgba[ACOMP] = palette[(index << 1) + 1]; + return; + case GL_RGB: + rgba[RCOMP] = palette[index * 3 + 0]; + rgba[GCOMP] = palette[index * 3 + 1]; + rgba[BCOMP] = palette[index * 3 + 2]; + return; + case GL_RGBA: + rgba[RCOMP] = palette[(index << 2) + 0]; + rgba[GCOMP] = palette[(index << 2) + 1]; + rgba[BCOMP] = palette[(index << 2) + 2]; + rgba[ACOMP] = palette[(index << 2) + 3]; + return; + default: + gl_problem(ctx, "Bad palette format in palette_sample"); + } +} + + + /**********************************************************************/ /* 1-D Texture Sampling Functions */ /**********************************************************************/ @@ -176,7 +228,10 @@ sample_1d_nearest(GLcontext *ctx, /* skip over the border, if any */ i += img->Border; - (*img->FetchTexel)(ctx, tObj, img, i, 0, 0, rgba); + (*img->FetchTexel)(img, i, 0, 0, (GLvoid *) rgba); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, rgba[0], rgba); + } } @@ -219,13 +274,19 @@ sample_1d_linear(GLcontext *ctx, COPY_CHAN4(t0, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i0, 0, 0, t0); + (*img->FetchTexel)(img, i0, 0, 0, (GLvoid *) t0); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t0[0], t0); + } } if (useBorderColor & I1BIT) { COPY_CHAN4(t1, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i1, 0, 0, t1); + (*img->FetchTexel)(img, i1, 0, 0, (GLvoid *) t1); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t1[0], t1); + } } rgba[0] = (GLchan) ((w0 * t0[0] + w1 * t1[0]) >> WEIGHT_SHIFT); @@ -451,7 +512,10 @@ sample_2d_nearest(GLcontext *ctx, i += img->Border; j += img->Border; - (*img->FetchTexel)(ctx, tObj, img, i, j, 0, rgba); + (*img->FetchTexel)(img, i, j, 0, (GLvoid *) rgba); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, rgba[0], rgba); + } } @@ -507,25 +571,37 @@ sample_2d_linear(GLcontext *ctx, COPY_CHAN4(t00, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i0, j0, 0, t00); + (*img->FetchTexel)(img, i0, j0, 0, (GLvoid *) t00); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t00[0], t00); + } } if (useBorderColor & (I1BIT | J0BIT)) { COPY_CHAN4(t10, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i1, j0, 0, t10); + (*img->FetchTexel)(img, i1, j0, 0, (GLvoid *) t10); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t10[0], t10); + } } if (useBorderColor & (I0BIT | J1BIT)) { COPY_CHAN4(t01, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i0, j1, 0, t01); + (*img->FetchTexel)(img, i0, j1, 0, (GLvoid *) t01); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t01[0], t01); + } } if (useBorderColor & (I1BIT | J1BIT)) { COPY_CHAN4(t11, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i1, j1, 0, t11); + (*img->FetchTexel)(img, i1, j1, 0, (GLvoid *) t11); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t11[0], t11); + } } rgba[0] = (GLchan) ((w00 * t00[0] + w10 * t10[0] + w01 * t01[0] + w11 * t11[0]) >> WEIGHT_SHIFT); @@ -852,7 +928,10 @@ sample_3d_nearest(GLcontext *ctx, COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapT, t, height, j); COMPUTE_NEAREST_TEXEL_LOCATION(tObj->WrapR, r, depth, k); - (*img->FetchTexel)(ctx, tObj, img, i, j, k, rgba); + (*img->FetchTexel)(img, i, j, k, (GLvoid *) rgba); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, rgba[0], rgba); + } } @@ -918,50 +997,74 @@ sample_3d_linear(GLcontext *ctx, COPY_CHAN4(t000, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i0, j0, k0, t000); + (*img->FetchTexel)(img, i0, j0, k0, (GLvoid *) t000); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t000[0], t000); + } } if (useBorderColor & (I1BIT | J0BIT | K0BIT)) { COPY_CHAN4(t100, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i1, j0, k0, t100); + (*img->FetchTexel)(img, i1, j0, k0, (GLvoid *) t100); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t100[0], t100); + } } if (useBorderColor & (I0BIT | J1BIT | K0BIT)) { COPY_CHAN4(t010, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i0, j1, k0, t010); + (*img->FetchTexel)(img, i0, j1, k0, (GLvoid *) t010); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t010[0], t010); + } } if (useBorderColor & (I1BIT | J1BIT | K0BIT)) { COPY_CHAN4(t110, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i1, j1, k0, t110); + (*img->FetchTexel)(img, i1, j1, k0, (GLvoid *) t110); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t110[0], t110); + } } if (useBorderColor & (I0BIT | J0BIT | K1BIT)) { COPY_CHAN4(t001, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i0, j0, k1, t001); + (*img->FetchTexel)(img, i0, j0, k1, (GLvoid *) t001); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t001[0], t001); + } } if (useBorderColor & (I1BIT | J0BIT | K1BIT)) { COPY_CHAN4(t101, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i1, j0, k1, t101); + (*img->FetchTexel)(img, i1, j0, k1, (GLvoid *) t101); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t101[0], t101); + } } if (useBorderColor & (I0BIT | J1BIT | K1BIT)) { COPY_CHAN4(t011, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i0, j1, k1, t011); + (*img->FetchTexel)(img, i0, j1, k1, (GLvoid *) t011); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t011[0], t011); + } } if (useBorderColor & (I1BIT | J1BIT | K1BIT)) { COPY_CHAN4(t111, tObj->BorderColor); } else { - (*img->FetchTexel)(ctx, tObj, img, i1, j1, k1, t111); + (*img->FetchTexel)(img, i1, j1, k1, (GLvoid *) t111); + if (img->Format == GL_COLOR_INDEX) { + palette_sample(ctx, tObj, t111[0], t111); + } } rgba[0] = (GLchan) ( |