/**
* Add an immediate scalar to the constant list, while trying to avoid
* duplicates.
*/
unsigned rc_constants_add_immediate_scalar(struct rc_constant_list * c, float data, unsigned * swizzle)
{
unsigned index;
int free_index = -1;
struct rc_constant constant;
for(index = 0; index < c->Count; ++index) {
if (c->Constants[index].Type == RC_CONSTANT_IMMEDIATE) {
unsigned comp;
for(comp = 0; comp < c->Constants[index].Size; ++comp) {
if (c->Constants[index].u.Immediate[comp] == data) {
*swizzle = RC_MAKE_SWIZZLE(comp, comp, comp, comp);
return index;
}
}
if (c->Constants[index].Size < 4)
free_index = index;
}
}
if (free_index >= 0) {
unsigned comp = c->Constants[free_index].Size++;
c->Constants[free_index].u.Immediate[comp] = data;
*swizzle = RC_MAKE_SWIZZLE(comp, comp, comp, comp);
return free_index;
}
memset(&constant, 0, sizeof(constant));
constant.Type = RC_CONSTANT_IMMEDIATE;
constant.Size = 1;
constant.u.Immediate[0] = data;
*swizzle = RC_SWIZZLE_XXXX;
return rc_constants_add(c, &constant);
}
/**
* 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_MAKE_SWIZZLE(RC_SWIZZLE_X, RC_SWIZZLE_Y, RC_SWIZZLE_Z, RC_SWIZZLE_ZERO);
inst_mad->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
inst_mad->U.I.SrcReg[1].Swizzle = RC_MAKE_SWIZZLE(RC_SWIZZLE_X, RC_SWIZZLE_Y, RC_SWIZZLE_Z, RC_SWIZZLE_ZERO);
inst_mad->U.I.SrcReg[2].File = RC_FILE_CONSTANT;
inst_mad->U.I.SrcReg[2].Swizzle = RC_MAKE_SWIZZLE(RC_SWIZZLE_X, RC_SWIZZLE_Y, RC_SWIZZLE_Z, RC_SWIZZLE_ZERO);
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;
}
}
}
}
static void get_external_state(
struct r300_context* r300,
struct r300_fragment_program_external_state* state)
{
struct r300_textures_state *texstate = r300->textures_state.state;
struct r300_rs_state *rs = r300->rs_state.state;
unsigned i;
state->frag_clamp = rs ? rs->rs.clamp_fragment_color : 0;
for (i = 0; i < texstate->sampler_state_count; i++) {
struct r300_sampler_state *s = texstate->sampler_states[i];
struct r300_sampler_view *v = texstate->sampler_views[i];
struct r300_resource *t;
if (!s || !v) {
continue;
}
t = r300_resource(v->base.texture);
if (s->state.compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) {
state->unit[i].compare_mode_enabled = 1;
/* Fortunately, no need to translate this. */
state->unit[i].texture_compare_func = s->state.compare_func;
}
state->unit[i].non_normalized_coords = !s->state.normalized_coords;
state->unit[i].convert_unorm_to_snorm =
v->base.format == PIPE_FORMAT_RGTC1_SNORM ||
v->base.format == PIPE_FORMAT_LATC1_SNORM;
/* Pass texture swizzling to the compiler, some lowering passes need it. */
if (v->base.format == PIPE_FORMAT_RGTC1_SNORM ||
v->base.format == PIPE_FORMAT_LATC1_SNORM) {
unsigned char swizzle[4];
util_format_compose_swizzles(
util_format_description(v->base.format)->swizzle,
v->swizzle,
swizzle);
state->unit[i].texture_swizzle =
RC_MAKE_SWIZZLE(swizzle[0], swizzle[1],
swizzle[2], swizzle[3]);
} else if (state->unit[i].compare_mode_enabled) {
state->unit[i].texture_swizzle =
RC_MAKE_SWIZZLE(v->swizzle[0], v->swizzle[1],
v->swizzle[2], v->swizzle[3]);
}
/* XXX this should probably take into account STR, not just S. */
if (t->tex.is_npot) {
switch (s->state.wrap_s) {
case PIPE_TEX_WRAP_REPEAT:
state->unit[i].wrap_mode = RC_WRAP_REPEAT;
break;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
state->unit[i].wrap_mode = RC_WRAP_MIRRORED_REPEAT;
break;
case PIPE_TEX_WRAP_MIRROR_CLAMP:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
state->unit[i].wrap_mode = RC_WRAP_MIRRORED_CLAMP;
break;
default:
state->unit[i].wrap_mode = RC_WRAP_NONE;
}
if (t->b.b.b.target == PIPE_TEXTURE_3D)
state->unit[i].clamp_and_scale_before_fetch = TRUE;
}
}
}
