diff options
| author | Nicolai Hähnle <nhaehnle@gmail.com> | 2009-09-21 12:50:33 +0200 |
|---|---|---|
| committer | Nicolai Hähnle <nhaehnle@gmail.com> | 2009-09-21 12:56:16 +0200 |
| commit | 526430ade1d7ec0e1b3743d69e1ee9fb89cbaa2a (patch) | |
| tree | 1cce9e33832be85ef8f9d683eadb94992105c1e1 /src | |
| parent | 736e1ae42fd61f2b9f982b0491ca7daea7e615ed (diff) | |
r300: Zero-initialize register for NV_vertex_program
Signed-off-by: Nicolai Hähnle <nhaehnle@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c | 1 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_vertprog.c | 31 |
2 files changed, 32 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c index 93a516105e..dad27fc98e 100644 --- a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c +++ b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c @@ -89,6 +89,7 @@ static unsigned long t_dst_index(struct r300_vertex_program_code *vp, static unsigned long t_src_class(gl_register_file file) { switch (file) { + case PROGRAM_BUILTIN: case PROGRAM_TEMPORARY: return PVS_SRC_REG_TEMPORARY; case PROGRAM_INPUT: diff --git a/src/mesa/drivers/dri/r300/r300_vertprog.c b/src/mesa/drivers/dri/r300/r300_vertprog.c index dd0f27f9cb..0cb7dde985 100644 --- a/src/mesa/drivers/dri/r300/r300_vertprog.c +++ b/src/mesa/drivers/dri/r300/r300_vertprog.c @@ -203,6 +203,34 @@ static void t_inputs_outputs(struct r300_vertex_program_compiler * c) } } +/** + * The NV_vertex_program spec mandates that all registers be + * initialized to zero. We do this here unconditionally. + * + * \note We rely on dead-code elimination in the compiler. + */ +static void initialize_NV_registers(struct radeon_compiler * compiler) +{ + unsigned int reg; + struct rc_instruction * inst; + + for(reg = 0; reg < 12; ++reg) { + inst = rc_insert_new_instruction(compiler, &compiler->Program.Instructions); + inst->I.Opcode = OPCODE_MOV; + inst->I.DstReg.File = PROGRAM_TEMPORARY; + inst->I.DstReg.Index = reg; + inst->I.SrcReg[0].File = PROGRAM_BUILTIN; + inst->I.SrcReg[0].Swizzle = SWIZZLE_0000; + } + + inst = rc_insert_new_instruction(compiler, &compiler->Program.Instructions); + inst->I.Opcode = OPCODE_ARL; + inst->I.DstReg.File = PROGRAM_ADDRESS; + inst->I.DstReg.Index = 0; + inst->I.DstReg.WriteMask = WRITEMASK_X; + inst->I.SrcReg[0].File = PROGRAM_BUILTIN; + inst->I.SrcReg[0].Swizzle = SWIZZLE_0000; +} static struct r300_vertex_program *build_program(GLcontext *ctx, struct r300_vertex_program_key *wanted_key, @@ -234,6 +262,9 @@ static struct r300_vertex_program *build_program(GLcontext *ctx, rc_mesa_to_rc_program(&compiler.Base, &vp->Base->Base); + if (mesa_vp->IsNVProgram) + initialize_NV_registers(&compiler.Base); + rc_move_output(&compiler.Base, VERT_RESULT_PSIZ, VERT_RESULT_PSIZ, WRITEMASK_X); if (vp->key.WPosAttr != FRAG_ATTRIB_MAX) { |