From bc139a19b00f8686caa8db7c56af2087f26e369a Mon Sep 17 00:00:00 2001 From: Brian Date: Tue, 9 Oct 2007 14:55:22 -0600 Subject: Pack fragment program outputs to be consistant with vertex programs. Previously, output[0] was always Z and output[1] was color. Now output[0] will be color if Z is not written. In shade_quad() use the semantic info to determine which quantity is in which output slot. --- src/mesa/state_tracker/st_program.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) (limited to 'src/mesa/state_tracker') diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c index 86aaaad6bb..0b14830353 100644 --- a/src/mesa/state_tracker/st_program.c +++ b/src/mesa/state_tracker/st_program.c @@ -160,8 +160,6 @@ st_translate_vertex_program(struct st_context *st, defaultOutputMapping[attr] = slot; } - vs.outputs_written |= (1 << slot); - /* printf("Output %u -> slot %u\n", attr, slot); */ @@ -346,35 +344,33 @@ st_translate_fragment_program(struct st_context *st, } /* - * Semantics for outputs + * Semantics and mapping for outputs */ { uint numColors = 0; GLbitfield outputsWritten = stfp->Base.Base.OutputsWritten; - /* output[0] is always Z, but may not really be written */ - fs.output_semantic_name[fs.num_outputs] = TGSI_SEMANTIC_POSITION; - fs.output_semantic_index[fs.num_outputs] = 0; - outputMapping[FRAG_RESULT_DEPR] = fs.num_outputs; - fs.num_outputs++; - + /* if z is written, emit that first */ if (outputsWritten & (1 << FRAG_RESULT_DEPR)) { - fs.outputs_written |= 0x1; + fs.output_semantic_name[fs.num_outputs] = TGSI_SEMANTIC_POSITION; + fs.output_semantic_index[fs.num_outputs] = 0; + outputMapping[FRAG_RESULT_DEPR] = fs.num_outputs; + fs.num_outputs++; outputsWritten &= ~(1 << FRAG_RESULT_DEPR); } - /* color outputs begin at output [1] */ + /* handle remaning outputs (color) */ for (attr = 0; attr < FRAG_RESULT_MAX; attr++) { if (outputsWritten & (1 << attr)) { switch (attr) { case FRAG_RESULT_DEPR: + /* handled above */ assert(0); break; case FRAG_RESULT_COLR: fs.output_semantic_name[fs.num_outputs] = TGSI_SEMANTIC_COLOR; fs.output_semantic_index[fs.num_outputs] = numColors; outputMapping[attr] = fs.num_outputs; - fs.outputs_written |= (0x2 << numColors); numColors++; break; default: -- cgit v1.2.3