static void lower_texture_rect(struct r300_fragment_program_compiler *compiler,
struct rc_instruction *inst)
{
struct rc_instruction *inst_rect;
unsigned temp = rc_find_free_temporary(&compiler->Base);
if (inst->U.I.TexSrcTarget == RC_TEXTURE_RECT ||
compiler->state.unit[inst->U.I.TexSrcUnit].non_normalized_coords) {
inst_rect = rc_insert_new_instruction(&compiler->Base, inst->Prev);
inst_rect->U.I.Opcode = RC_OPCODE_MUL;
inst_rect->U.I.DstReg.File = RC_FILE_TEMPORARY;
inst_rect->U.I.DstReg.Index = temp;
inst_rect->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
inst_rect->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
inst_rect->U.I.SrcReg[1].Index =
rc_constants_add_state(&compiler->Base.Program.Constants,
RC_STATE_R300_TEXRECT_FACTOR, inst->U.I.TexSrcUnit);
reset_srcreg(&inst->U.I.SrcReg[0]);
inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
inst->U.I.SrcReg[0].Index = temp;
inst->U.I.TexSrcTarget = RC_TEXTURE_2D;
}
}
static struct rc_src_register shadow_ambient(struct r300_fragment_program_compiler *compiler,
int tmu)
{
struct rc_src_register reg = { 0, };
if (compiler->enable_shadow_ambient) {
reg.File = RC_FILE_CONSTANT;
reg.Index = rc_constants_add_state(&compiler->Base.Program.Constants,
RC_STATE_SHADOW_AMBIENT, tmu);
reg.Swizzle = RC_SWIZZLE_WWWW;
} else {
reg.File = RC_FILE_NONE;
reg.Swizzle = RC_SWIZZLE_0000;
}
return reg;
}
static void scale_texcoords(struct r300_fragment_program_compiler *compiler,
struct rc_instruction *inst,
unsigned state_constant)
{
struct rc_instruction *inst_mov;
unsigned temp = rc_find_free_temporary(&compiler->Base);
inst_mov = rc_insert_new_instruction(&compiler->Base, inst->Prev);
inst_mov->U.I.Opcode = RC_OPCODE_MUL;
inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
inst_mov->U.I.DstReg.Index = temp;
inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
inst_mov->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
inst_mov->U.I.SrcReg[1].Index =
rc_constants_add_state(&compiler->Base.Program.Constants,
state_constant, inst->U.I.TexSrcUnit);
reset_srcreg(&inst->U.I.SrcReg[0]);
inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
inst->U.I.SrcReg[0].Index = temp;
}
/**
* Introduce standard code fragment to deal with fragment.position.
*/
void rc_transform_fragment_wpos(struct radeon_compiler * c, unsigned wpos, unsigned new_input,
int full_vtransform)
{
unsigned tempregi = rc_find_free_temporary(c);
struct rc_instruction * inst_rcp;
struct rc_instruction * inst_mul;
struct rc_instruction * inst_mad;
struct rc_instruction * inst;
c->Program.InputsRead &= ~(1 << wpos);
c->Program.InputsRead |= 1 << new_input;
/* perspective divide */
inst_rcp = rc_insert_new_instruction(c, &c->Program.Instructions);
inst_rcp->U.I.Opcode = RC_OPCODE_RCP;
inst_rcp->U.I.DstReg.File = RC_FILE_TEMPORARY;
inst_rcp->U.I.DstReg.Index = tempregi;
inst_rcp->U.I.DstReg.WriteMask = RC_MASK_W;
inst_rcp->U.I.SrcReg[0].File = RC_FILE_INPUT;
inst_rcp->U.I.SrcReg[0].Index = new_input;
inst_rcp->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_WWWW;
inst_mul = rc_insert_new_instruction(c, inst_rcp);
inst_mul->U.I.Opcode = RC_OPCODE_MUL;
inst_mul->U.I.DstReg.File = RC_FILE_TEMPORARY;
inst_mul->U.I.DstReg.Index = tempregi;
inst_mul->U.I.DstReg.WriteMask = RC_MASK_XYZ;
inst_mul->U.I.SrcReg[0].File = RC_FILE_INPUT;
inst_mul->U.I.SrcReg[0].Index = new_input;
inst_mul->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
inst_mul->U.I.SrcReg[1].Index = tempregi;
inst_mul->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_WWWW;
/* viewport transformation */
inst_mad = rc_insert_new_instruction(c, inst_mul);
inst_mad->U.I.Opcode = RC_OPCODE_MAD;
inst_mad->U.I.DstReg.File = RC_FILE_TEMPORARY;
inst_mad->U.I.DstReg.Index = tempregi;
inst_mad->U.I.DstReg.WriteMask = RC_MASK_XYZ;
inst_mad->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
inst_mad->U.I.SrcReg[0].Index = tempregi;
inst_mad->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZ0;
inst_mad->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
inst_mad->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_XYZ0;
inst_mad->U.I.SrcReg[2].File = RC_FILE_CONSTANT;
inst_mad->U.I.SrcReg[2].Swizzle = RC_SWIZZLE_XYZ0;
if (full_vtransform) {
inst_mad->U.I.SrcReg[1].Index = rc_constants_add_state(&c->Program.Constants, RC_STATE_R300_VIEWPORT_SCALE, 0);
inst_mad->U.I.SrcReg[2].Index = rc_constants_add_state(&c->Program.Constants, RC_STATE_R300_VIEWPORT_OFFSET, 0);
} else {
inst_mad->U.I.SrcReg[1].Index =
inst_mad->U.I.SrcReg[2].Index = rc_constants_add_state(&c->Program.Constants, RC_STATE_R300_WINDOW_DIMENSION, 0);
}
for (inst = inst_mad->Next; inst != &c->Program.Instructions; inst = inst->Next) {
const struct rc_opcode_info * opcode = rc_get_opcode_info(inst->U.I.Opcode);
unsigned i;
for(i = 0; i < opcode->NumSrcRegs; i++) {
if (inst->U.I.SrcReg[i].File == RC_FILE_INPUT &&
inst->U.I.SrcReg[i].Index == wpos) {
inst->U.I.SrcReg[i].File = RC_FILE_TEMPORARY;
inst->U.I.SrcReg[i].Index = tempregi;
}
}
}
}
