fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2025-12-25 10:50:10 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

glsl_to_tgsi: finish some loose ends

Browse source
This commit is contained in:
Bryan Cain 2011-06-14 18:17:40 -05:00
parent b2c067e307
commit bf1cee9f24
1 changed files with 36 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

46
src/mesa/state_tracker/st_glsl_to_tgsi.cpp
View file

@ -2200,7 +2200,7 @@ glsl_to_tgsi_visitor::visit(ir_texture *ir)
ir->lod_info.grad.dPdy->accept(this);
dy = this->result;
break;
case ir_txf: // TODO: use TGSI_OPCODE_TXF here
case ir_txf: /* TODO: use TGSI_OPCODE_TXF here */
assert(!"GLSL 1.30 features unsupported");
break;
}
@ -3731,6 +3731,37 @@ emit_wpos(struct st_context *st,
emit_wpos_inversion(t, program, invert);
}
/**
* OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
* TGSI uses +1 for front, -1 for back.
* This function converts the TGSI value to the GL value. Simply clamping/
* saturating the value to [0,1] does the job.
*/
static void
emit_face_var(struct st_translate *t)
{
struct ureg_program *ureg = t->ureg;
struct ureg_dst face_temp = ureg_DECL_temporary(ureg);
struct ureg_src face_input = t->inputs[t->inputMapping[FRAG_ATTRIB_FACE]];
/* MOV_SAT face_temp, input[face] */
face_temp = ureg_saturate(face_temp);
ureg_MOV(ureg, face_temp, face_input);
/* Use face_temp as face input from here on: */
t->inputs[t->inputMapping[FRAG_ATTRIB_FACE]] = ureg_src(face_temp);
}
static void
emit_edgeflags(struct st_translate *t)
{
struct ureg_program *ureg = t->ureg;
struct ureg_dst edge_dst = t->outputs[t->outputMapping[VERT_RESULT_EDGE]];
struct ureg_src edge_src = t->inputs[t->inputMapping[VERT_ATTRIB_EDGEFLAG]];
ureg_MOV(ureg, edge_dst, edge_src);
}
/**
* Translate intermediate IR (glsl_to_tgsi_instruction) to TGSI format.
* \param program the program to translate
@ -3800,15 +3831,11 @@ st_translate_program(
/* Must do this after setting up t->inputs, and before
* emitting constant references, below:
*/
printf("FRAG_BIT_WPOS\n");
emit_wpos(st_context(ctx), t, proginfo, ureg);
}
if (proginfo->InputsRead & FRAG_BIT_FACE) {
// TODO: uncomment
printf("FRAG_BIT_FACE\n");
//emit_face_var( t, program );
}
if (proginfo->InputsRead & FRAG_BIT_FACE)
emit_face_var(t);
/*
* Declare output attributes.
@ -3875,7 +3902,6 @@ st_translate_program(
/* XXX: note we are modifying the incoming shader here! Need to
* do this before emitting the constant decls below, or this
* will be missed.
* XXX: depends on "Parameters" field specific to Mesa IR
*/
unsigned pointSizeClampConst =
_mesa_add_state_reference(proginfo->Parameters,
@ -3887,8 +3913,8 @@ st_translate_program(
t->outputs[i] = psizregtemp;
}
}
/*if (passthrough_edgeflags)
emit_edgeflags( t, program ); */ // TODO: uncomment
if (passthrough_edgeflags)
emit_edgeflags(t);
}
/* Declare address register.