diff options
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_vertexprog.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_vertexprog.c b/src/mesa/drivers/dri/r300/r300_vertexprog.c index 1841148cf3..c5c979ea22 100644 --- a/src/mesa/drivers/dri/r300/r300_vertexprog.c +++ b/src/mesa/drivers/dri/r300/r300_vertexprog.c @@ -405,6 +405,39 @@ void translate_vertex_shader(struct r300_vertex_program *vp) int u_temp_i=VSF_MAX_FRAGMENT_TEMPS-1; struct prog_src_register src[3]; + if (getenv("R300_VP_SAFETY")) { + WARN_ONCE("R300_VP_SAFETY enabled.\n"); + + vpi = malloc((mesa_vp->Base.NumInstructions + VSF_MAX_FRAGMENT_TEMPS) * sizeof(struct prog_instruction)); + memset(vpi, 0, VSF_MAX_FRAGMENT_TEMPS * sizeof(struct prog_instruction)); + + for (i=0; i < VSF_MAX_FRAGMENT_TEMPS; i++) { + vpi[i].Opcode = OPCODE_MOV; + vpi[i].StringPos = 0; + vpi[i].Data = 0; + + vpi[i].DstReg.File = PROGRAM_TEMPORARY; + vpi[i].DstReg.Index = i; + vpi[i].DstReg.WriteMask = WRITEMASK_XYZW; + vpi[i].DstReg.CondMask = COND_TR; + + vpi[i].SrcReg[0].File = PROGRAM_STATE_VAR; + vpi[i].SrcReg[0].Index = 0; + vpi[i].SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE); + } + + memcpy(&vpi[i], mesa_vp->Base.Instructions, mesa_vp->Base.NumInstructions * sizeof(struct prog_instruction)); + + free(mesa_vp->Base.Instructions); + + mesa_vp->Base.Instructions = vpi; + + mesa_vp->Base.NumInstructions += VSF_MAX_FRAGMENT_TEMPS; + vpi = &mesa_vp->Base.Instructions[mesa_vp->Base.NumInstructions-1]; + + assert(vpi->Opcode == OPCODE_END); + } + if (mesa_vp->IsPositionInvariant) { struct program_parameter_list *paramList; GLint tokens[6] = { STATE_MATRIX, STATE_MVP, 0, 0, 0, STATE_MATRIX }; @@ -952,6 +985,12 @@ void translate_vertex_shader(struct r300_vertex_program *vp) next: ; } + /* Will most likely segfault before we get here... fix later. */ + if(o_inst - vp->program.body.i >= VSF_MAX_FRAGMENT_LENGTH/4) { + vp->program.length = 0; + vp->native = GL_FALSE; + return ; + } vp->program.length=(o_inst - vp->program.body.i) * 4; #if 0 fprintf(stderr, "hw program:\n"); |