From ce0c32e3d23641214dae9b3fed863dc163b26ea4 Mon Sep 17 00:00:00 2001 From: Nicolai Hähnle Date: Sat, 25 Jul 2009 00:41:05 +0200 Subject: r300/vertprog: Refactor fog_as_texcoord to use rc_program MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Nicolai Hähnle --- src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c | 40 +++------------------- .../drivers/dri/r300/compiler/radeon_compiler.c | 26 ++++++++++++++ .../drivers/dri/r300/compiler/radeon_compiler.h | 1 + 3 files changed, 31 insertions(+), 36 deletions(-) (limited to 'src/mesa/drivers/dri/r300/compiler') diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c index 53e62ae2f3..38ee9575a3 100644 --- a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c +++ b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c @@ -634,39 +634,6 @@ static void pos_as_texcoord(struct gl_program *prog, int tex_id) prog->OutputsWritten |= 1 << (VERT_RESULT_TEX0 + tex_id); } -/** - * The fogcoord attribute is special in that only the first component - * is relevant, and the remaining components are always fixed (when read - * from by the fragment program) to yield an X001 pattern. - * - * We need to enforce this either in the vertex program or in the fragment - * program, and this code chooses not to enforce it in the vertex program. - * This is slightly cheaper, as long as the fragment program does not use - * weird swizzles. - * - * And it seems that usually, weird swizzles are not used, so... - * - * See also the counterpart rewriting for fragment programs. - */ -static void fog_as_texcoord(struct gl_program *prog, int tex_id) -{ - struct prog_instruction *vpi; - - vpi = prog->Instructions; - while (vpi->Opcode != OPCODE_END) { - if (vpi->DstReg.File == PROGRAM_OUTPUT && vpi->DstReg.Index == VERT_RESULT_FOGC) { - vpi->DstReg.Index = VERT_RESULT_TEX0 + tex_id; - vpi->DstReg.WriteMask = WRITEMASK_X; - } - - ++vpi; - } - - prog->OutputsWritten &= ~(1 << VERT_RESULT_FOGC); - prog->OutputsWritten |= 1 << (VERT_RESULT_TEX0 + tex_id); -} - - static void addArtificialOutputs(struct r300_vertex_program_compiler * compiler) { int i; @@ -721,12 +688,13 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler* compiler) pos_as_texcoord(compiler->program, compiler->state.WPosAttr - FRAG_ATTRIB_TEX0); } + rc_mesa_to_rc_program(&compiler->Base, compiler->program); + compiler->program = 0; + if (compiler->state.FogAttr != FRAG_ATTRIB_MAX) { - fog_as_texcoord(compiler->program, compiler->state.FogAttr - FRAG_ATTRIB_TEX0); + rc_move_output(&compiler->Base, VERT_RESULT_FOGC, compiler->state.FogAttr - FRAG_ATTRIB_TEX0 + VERT_RESULT_TEX0, WRITEMASK_X); } - rc_mesa_to_rc_program(&compiler->Base, compiler->program); - addArtificialOutputs(compiler); { diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.c b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.c index adf900a5cb..6e7361d568 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.c @@ -122,6 +122,32 @@ void rc_move_input(struct radeon_compiler * c, unsigned input, struct prog_src_r } +/** + * Rewrite the program such that everything that writes into the given + * output register will instead write to new_output. The new_output + * writemask is honoured. + */ +void rc_move_output(struct radeon_compiler * c, unsigned output, unsigned new_output, unsigned writemask) +{ + struct rc_instruction * inst; + + c->Program.OutputsWritten &= ~(1 << output); + + for(inst = c->Program.Instructions.Next; inst != &c->Program.Instructions; inst = inst->Next) { + const unsigned numdsts = _mesa_num_inst_dst_regs(inst->I.Opcode); + + if (numdsts) { + if (inst->I.DstReg.File == PROGRAM_OUTPUT && inst->I.DstReg.Index == output) { + inst->I.DstReg.Index = new_output; + inst->I.DstReg.WriteMask &= writemask; + + c->Program.OutputsWritten |= 1 << new_output; + } + } + } +} + + /** * Introduce standard code fragment to deal with fragment.position. */ diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h index 74306994cb..34f4240d53 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h +++ b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h @@ -65,6 +65,7 @@ void rc_debug(struct radeon_compiler * c, const char * fmt, ...); void rc_error(struct radeon_compiler * c, const char * fmt, ...); void rc_move_input(struct radeon_compiler * c, unsigned input, struct prog_src_register new_input); +void rc_move_output(struct radeon_compiler * c, unsigned output, unsigned new_output, unsigned writemask); void rc_transform_fragment_wpos(struct radeon_compiler * c, unsigned wpos, unsigned new_input); struct r300_fragment_program_compiler { -- cgit v1.2.3