From 8fc542aa8904339c52a4aec0ebaf42f498ba6ae8 Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Sat, 31 Jan 2015 18:56:54 +0100 Subject: gallium/u_pstipple: add ability to specify a fixed texture unit E.g. r600g can use slot 17, which is outside of the API range. Reviewed-by: Glenn Kennard Reviewed-by: Brian Paul --- src/gallium/auxiliary/util/u_pstipple.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) (limited to 'src/gallium/auxiliary/util/u_pstipple.c') diff --git a/src/gallium/auxiliary/util/u_pstipple.c b/src/gallium/auxiliary/util/u_pstipple.c index 1e1ec4a985c..0a20bdb4747 100644 --- a/src/gallium/auxiliary/util/u_pstipple.c +++ b/src/gallium/auxiliary/util/u_pstipple.c @@ -182,6 +182,8 @@ struct pstip_transform_context { int freeSampler; /** an available sampler for the pstipple */ int numImmed; uint coordOrigin; + unsigned fixedUnit; + bool hasFixedUnit; }; @@ -279,7 +281,8 @@ pstip_transform_prolog(struct tgsi_transform_context *ctx) } /* declare new sampler */ - tgsi_transform_sampler_decl(ctx, pctx->freeSampler); + tgsi_transform_sampler_decl(ctx, + pctx->hasFixedUnit ? pctx->fixedUnit : pctx->freeSampler); /* Declare temp[0] reg if not already declared. * We can always use temp[0] since this code is before @@ -318,7 +321,8 @@ pstip_transform_prolog(struct tgsi_transform_context *ctx) tgsi_transform_tex_2d_inst(ctx, TGSI_FILE_TEMPORARY, texTemp, TGSI_FILE_TEMPORARY, texTemp, - pctx->freeSampler); + pctx->hasFixedUnit ? pctx->fixedUnit + : pctx->freeSampler); /* KILL_IF -texTemp; # if -texTemp < 0, kill fragment */ tgsi_transform_kill_inst(ctx, @@ -330,12 +334,16 @@ pstip_transform_prolog(struct tgsi_transform_context *ctx) /** * Given a fragment shader, return a new fragment shader which * samples a stipple texture and executes KILL. + * * \param samplerUnitOut returns the index of the sampler unit which - * will be used to sample the stipple texture + * will be used to sample the stipple texture; + * if NULL, the fixed unit is used + * \param fixedUnit fixed texture unit used for the stipple texture */ struct tgsi_token * util_pstipple_create_fragment_shader(const struct tgsi_token *tokens, - unsigned *samplerUnitOut) + unsigned *samplerUnitOut, + unsigned fixedUnit) { struct pstip_transform_context transform; const uint newLen = tgsi_num_tokens(tokens) + NUM_NEW_TOKENS; @@ -352,6 +360,8 @@ util_pstipple_create_fragment_shader(const struct tgsi_token *tokens, transform.wincoordInput = -1; transform.maxInput = -1; transform.coordOrigin = TGSI_FS_COORD_ORIGIN_UPPER_LEFT; + transform.hasFixedUnit = !samplerUnitOut; + transform.fixedUnit = fixedUnit; transform.base.prolog = pstip_transform_prolog; transform.base.transform_declaration = pstip_transform_decl; transform.base.transform_immediate = pstip_transform_immed; @@ -368,9 +378,10 @@ util_pstipple_create_fragment_shader(const struct tgsi_token *tokens, tgsi_dump(new_fs->tokens, 0); #endif - assert(transform.freeSampler < PIPE_MAX_SAMPLERS); - *samplerUnitOut = transform.freeSampler; + if (samplerUnitOut) { + assert(transform.freeSampler < PIPE_MAX_SAMPLERS); + *samplerUnitOut = transform.freeSampler; + } return new_tokens; } - -- cgit v1.2.3