diff options
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_vertprog.c | 54 |
1 files changed, 37 insertions, 17 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_vertprog.c b/src/mesa/drivers/dri/r300/r300_vertprog.c index 46e1527ba27..66750b1c659 100644 --- a/src/mesa/drivers/dri/r300/r300_vertprog.c +++ b/src/mesa/drivers/dri/r300/r300_vertprog.c @@ -1185,23 +1185,6 @@ static void r300TranslateVertexShader(struct r300_vertex_program *vp, } } - /* Some outputs may be artificially added, to match the inputs - of the fragment program. Blank the outputs here. */ - for (i = 0; i < VERT_RESULT_MAX; i++) { - if (vp->key.OutputsAdded & (1 << i)) { - inst[0] = PVS_OP_DST_OPERAND(VE_ADD, - GL_FALSE, - GL_FALSE, - vp->outputs[i], - VSF_FLAG_ALL, - PVS_DST_REG_OUT); - inst[1] = __CONST(0, SWIZZLE_ZERO); - inst[2] = __CONST(0, SWIZZLE_ZERO); - inst[3] = __CONST(0, SWIZZLE_ZERO); - inst += 4; - } - } - vp->hw_code.length = (inst - vp->hw_code.body.d); if (vp->hw_code.length >= VSF_MAX_FRAGMENT_LENGTH) { vp->error = GL_TRUE; @@ -1390,6 +1373,43 @@ static struct r300_vertex_program *build_program(struct r300_vertex_program_key fflush(stdout); } + /* Some outputs may be artificially added, to match the inputs of the fragment program. + * Issue 16 of vertex program spec says that all vertex attributes that are unwritten by + * vertex program are undefined, so just use MOV [vertex_result], CONST[0] + */ + { + int i, count = 0; + for (i = 0; i < VERT_RESULT_MAX; ++i) { + if (vp->key.OutputsAdded & (1 << i)) { + ++count; + } + } + + if (count > 0) { + struct prog_instruction *inst; + + _mesa_insert_instructions(&mesa_vp->Base, mesa_vp->Base.NumInstructions - 1, count); + inst = &mesa_vp->Base.Instructions[mesa_vp->Base.NumInstructions - 1 - count]; + + for (i = 0; i < VERT_RESULT_MAX; ++i) { + if (vp->key.OutputsAdded & (1 << i)) { + inst->Opcode = OPCODE_MOV; + + inst->DstReg.File = PROGRAM_OUTPUT; + inst->DstReg.Index = i; + inst->DstReg.WriteMask = WRITEMASK_XYZW; + inst->DstReg.CondMask = COND_TR; + + inst->SrcReg[0].File = PROGRAM_CONSTANT; + inst->SrcReg[0].Index = 0; + inst->SrcReg[0].Swizzle = SWIZZLE_XYZW; + + ++inst; + } + } + } + } + assert(mesa_vp->Base.NumInstructions); vp->num_temporaries = mesa_vp->Base.NumTemporaries; r300TranslateVertexShader(vp, mesa_vp->Base.Instructions); |