From 6edaef531806f4ac6c92c4a2934da5a37262e2e3 Mon Sep 17 00:00:00 2001 From: Michal Krol Date: Sun, 23 Mar 2008 20:39:35 +0100 Subject: gallium: Add util_gen_mipmap_filter(). We need a way to specify the type of minification filter used to downsample mipmap levels. The old util_gen_mipmap() retains its behaviour and uses LINEAR filter. --- src/gallium/auxiliary/util/u_gen_mipmap.c | 27 +++++++++++++++++++++++---- src/gallium/auxiliary/util/u_gen_mipmap.h | 5 +++++ 2 files changed, 28 insertions(+), 4 deletions(-) (limited to 'src/gallium/auxiliary/util') diff --git a/src/gallium/auxiliary/util/u_gen_mipmap.c b/src/gallium/auxiliary/util/u_gen_mipmap.c index cf02f00b1b..9203a78191 100644 --- a/src/gallium/auxiliary/util/u_gen_mipmap.c +++ b/src/gallium/auxiliary/util/u_gen_mipmap.c @@ -719,7 +719,6 @@ util_create_gen_mipmap(struct pipe_context *pipe, ctx->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; ctx->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE; ctx->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST; - ctx->sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR; ctx->sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR; ctx->sampler.normalized_coords = 1; @@ -849,11 +848,12 @@ simple_viewport(struct pipe_context *pipe, uint width, uint height) * \param face which cube face to generate mipmaps for (0 for non-cube maps) * \param baseLevel the first mipmap level to use as a src * \param lastLevel the last mipmap level to generate + * \param filter the minification filter used to generate mipmap levels with */ void -util_gen_mipmap(struct gen_mipmap_state *ctx, - struct pipe_texture *pt, - uint face, uint baseLevel, uint lastLevel) +util_gen_mipmap_filter(struct gen_mipmap_state *ctx, + struct pipe_texture *pt, + uint face, uint baseLevel, uint lastLevel, uint filter) { struct pipe_context *pipe = ctx->pipe; struct pipe_screen *screen = pipe->screen; @@ -914,6 +914,7 @@ util_gen_mipmap(struct gen_mipmap_state *ctx, */ ctx->sampler.min_lod = ctx->sampler.max_lod = (float) srcLevel; ctx->sampler.lod_bias = (float) srcLevel; + ctx->sampler.min_img_filter = filter; cso_single_sampler(ctx->cso, 0, &ctx->sampler); cso_single_sampler_done(ctx->cso); #if 0 @@ -945,3 +946,21 @@ util_gen_mipmap(struct gen_mipmap_state *ctx, cso_restore_sampler_textures(ctx->cso); cso_restore_framebuffer(ctx->cso); } + + +/** + * Generate mipmap images with a linear minification filter. + * See util_gen_mipmap_filter for more info. + * + * \param pt the texture to generate mipmap levels for + * \param face which cube face to generate mipmaps for (0 for non-cube maps) + * \param baseLevel the first mipmap level to use as a src + * \param lastLevel the last mipmap level to generate + */ +void +util_gen_mipmap(struct gen_mipmap_state *ctx, + struct pipe_texture *pt, + uint face, uint baseLevel, uint lastLevel) +{ + util_gen_mipmap_filter( ctx, pt, face, baseLevel, lastLevel, PIPE_TEX_FILTER_LINEAR ); +} diff --git a/src/gallium/auxiliary/util/u_gen_mipmap.h b/src/gallium/auxiliary/util/u_gen_mipmap.h index eeabf3bf07..64abdeae98 100644 --- a/src/gallium/auxiliary/util/u_gen_mipmap.h +++ b/src/gallium/auxiliary/util/u_gen_mipmap.h @@ -52,5 +52,10 @@ util_gen_mipmap(struct gen_mipmap_state *ctx, struct pipe_texture *pt, uint face, uint baseLevel, uint lastLevel); +extern void +util_gen_mipmap_filter(struct gen_mipmap_state *ctx, + struct pipe_texture *pt, + uint face, uint baseLevel, uint lastLevel, uint filter); + #endif -- cgit v1.2.3