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path: root/src/mesa/state_tracker/st_mesa_to_tgsi.c
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Diffstat (limited to 'src/mesa/state_tracker/st_mesa_to_tgsi.c')
-rw-r--r--src/mesa/state_tracker/st_mesa_to_tgsi.c112
1 files changed, 85 insertions, 27 deletions
diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c
index 3d6c215819..e788008dfe 100644
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -160,13 +160,14 @@ dst_register( struct st_translate *t,
static struct ureg_src
src_register( struct st_translate *t,
gl_register_file file,
- GLuint index )
+ GLint index )
{
switch( file ) {
case PROGRAM_UNDEFINED:
return ureg_src_undef();
case PROGRAM_TEMPORARY:
+ ASSERT(index >= 0);
if (ureg_dst_is_undef(t->temps[index]))
t->temps[index] = ureg_DECL_temporary( t->ureg );
return ureg_src(t->temps[index]);
@@ -174,9 +175,15 @@ src_register( struct st_translate *t,
case PROGRAM_STATE_VAR:
case PROGRAM_NAMED_PARAM:
case PROGRAM_ENV_PARAM:
+ case PROGRAM_LOCAL_PARAM:
case PROGRAM_UNIFORM:
- case PROGRAM_CONSTANT: /* ie, immediate */
+ ASSERT(index >= 0);
return t->constants[index];
+ case PROGRAM_CONSTANT: /* ie, immediate */
+ if (index < 0)
+ return ureg_DECL_constant( t->ureg, 0 );
+ else
+ return t->constants[index];
case PROGRAM_INPUT:
return t->inputs[t->inputMapping[index]];
@@ -263,9 +270,14 @@ translate_src( struct st_translate *t,
if (SrcReg->Abs)
src = ureg_abs(src);
- if (SrcReg->RelAddr)
+ if (SrcReg->RelAddr) {
src = ureg_src_indirect( src, ureg_src(t->address[0]));
-
+ /* If SrcReg->Index was negative, it was set to zero in
+ * src_register(). Reassign it now.
+ */
+ src.Index = SrcReg->Index;
+ }
+
return src;
}
@@ -278,7 +290,7 @@ static struct ureg_src swizzle_4v( struct ureg_src src,
/**
- * Translate SWZ instructions into a single MAD. EG:
+ * Translate a SWZ instruction into a MOV, MUL or MAD instruction. EG:
*
* SWZ dst, src.x-y10
*
@@ -396,6 +408,23 @@ static void emit_swz( struct st_translate *t,
}
+/**
+ * Negate the value of DDY to match GL semantics where (0,0) is the
+ * lower-left corner of the window.
+ * Note that the GL_ARB_fragment_coord_conventions extension will
+ * effect this someday.
+ */
+static void emit_ddy( struct st_translate *t,
+ struct ureg_dst dst,
+ const struct prog_src_register *SrcReg )
+{
+ struct ureg_program *ureg = t->ureg;
+ struct ureg_src src = translate_src( t, SrcReg );
+ src = ureg_negate( src );
+ ureg_DDY( ureg, dst, src );
+}
+
+
static unsigned
translate_opcode( unsigned op )
@@ -619,7 +648,9 @@ compile_instruction(
ureg_MOV( ureg, dst[0], ureg_imm1f(ureg, 0.5) );
break;
-
+ case OPCODE_DDY:
+ emit_ddy( t, dst[0], &inst->SrcReg[0] );
+ break;
default:
ureg_insn( ureg,
@@ -676,6 +707,41 @@ emit_inverted_wpos( struct st_translate *t,
/**
+ * 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,
+ const struct gl_program *program )
+{
+ 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,
+ const struct gl_program *program )
+{
+ 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 Mesa program to TGSI format.
* \param program the program to translate
* \param numInputs number of input registers used
@@ -694,26 +760,24 @@ emit_inverted_wpos( struct st_translate *t,
*
* \return array of translated tokens, caller's responsibility to free
*/
-const struct tgsi_token *
+enum pipe_error
st_translate_mesa_program(
GLcontext *ctx,
uint procType,
+ struct ureg_program *ureg,
const struct gl_program *program,
GLuint numInputs,
const GLuint inputMapping[],
const ubyte inputSemanticName[],
const ubyte inputSemanticIndex[],
const GLuint interpMode[],
- const GLbitfield inputFlags[],
GLuint numOutputs,
const GLuint outputMapping[],
const ubyte outputSemanticName[],
const ubyte outputSemanticIndex[],
- const GLbitfield outputFlags[] )
+ boolean passthrough_edgeflags )
{
struct st_translate translate, *t;
- struct ureg_program *ureg;
- const struct tgsi_token *tokens = NULL;
unsigned i;
t = &translate;
@@ -722,11 +786,7 @@ st_translate_mesa_program(
t->procType = procType;
t->inputMapping = inputMapping;
t->outputMapping = outputMapping;
- t->ureg = ureg_create( procType );
- if (t->ureg == NULL)
- return NULL;
-
- ureg = t->ureg;
+ t->ureg = ureg;
/*_mesa_print_program(program);*/
@@ -748,6 +808,10 @@ st_translate_mesa_program(
emit_inverted_wpos( t, program );
}
+ if (program->InputsRead & FRAG_BIT_FACE) {
+ emit_face_var( t, program );
+ }
+
/*
* Declare output attributes.
*/
@@ -782,6 +846,8 @@ st_translate_mesa_program(
outputSemanticName[i],
outputSemanticIndex[i] );
}
+ if (passthrough_edgeflags)
+ emit_edgeflags( t, program );
}
/* Declare address register.
@@ -805,6 +871,7 @@ st_translate_mesa_program(
for (i = 0; i < program->Parameters->NumParameters; i++) {
switch (program->Parameters->Parameters[i].Type) {
case PROGRAM_ENV_PARAM:
+ case PROGRAM_LOCAL_PARAM:
case PROGRAM_STATE_VAR:
case PROGRAM_NAMED_PARAM:
case PROGRAM_UNIFORM:
@@ -853,8 +920,7 @@ st_translate_mesa_program(
t->insn[t->labels[i].branch_target] );
}
- tokens = ureg_get_tokens( ureg, NULL );
- ureg_destroy( ureg );
+ return PIPE_OK;
out:
FREE(t->insn);
@@ -863,17 +929,9 @@ out:
if (t->error) {
debug_printf("%s: translate error flag set\n", __FUNCTION__);
- FREE((void *)tokens);
- tokens = NULL;
- }
-
- if (!tokens) {
- debug_printf("%s: failed to translate Mesa program:\n", __FUNCTION__);
- _mesa_print_program(program);
- debug_assert(0);
}
- return tokens;
+ return PIPE_ERROR_OUT_OF_MEMORY;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-05 13:12:12 +0000