summaryrefslogtreecommitdiff
path: root/src/mesa/state_tracker/st_mesa_to_tgsi.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/state_tracker/st_mesa_to_tgsi.c')
-rw-r--r--src/mesa/state_tracker/st_mesa_to_tgsi.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c
index f848462310..42f1c2017f 100644
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -72,6 +72,7 @@ struct st_translate {
struct ureg_src inputs[PIPE_MAX_SHADER_INPUTS];
struct ureg_dst address[1];
struct ureg_src samplers[PIPE_MAX_SAMPLERS];
+ struct ureg_src systemValues[SYSTEM_VALUE_MAX];
/* Extra info for handling point size clamping in vertex shader */
struct ureg_dst pointSizeResult; /**< Actual point size output register */
@@ -104,6 +105,13 @@ struct st_translate {
};
+/** Map Mesa's SYSTEM_VALUE_x to TGSI_SEMANTIC_x */
+static unsigned mesa_sysval_to_semantic[SYSTEM_VALUE_MAX] = {
+ TGSI_SEMANTIC_FACE,
+ TGSI_SEMANTIC_INSTANCEID
+};
+
+
/**
* Make note of a branch to a label in the TGSI code.
* After we've emitted all instructions, we'll go over the list
@@ -245,6 +253,10 @@ src_register( struct st_translate *t,
case PROGRAM_ADDRESS:
return ureg_src(t->address[index]);
+ case PROGRAM_SYSTEM_VALUE:
+ assert(index < Elements(t->systemValues));
+ return t->systemValues[index];
+
default:
debug_assert( 0 );
return ureg_src_undef();
@@ -1089,6 +1101,21 @@ st_translate_mesa_program(
t->address[0] = ureg_DECL_address( ureg );
}
+ /* Declare misc input registers
+ */
+ {
+ GLbitfield sysInputs = program->SystemValuesRead;
+ unsigned numSys = 0;
+ for (i = 0; sysInputs; i++) {
+ if (sysInputs & (1 << i)) {
+ unsigned semName = mesa_sysval_to_semantic[i];
+ t->systemValues[i] = ureg_DECL_system_value(ureg, numSys, semName, 0);
+ numSys++;
+ sysInputs &= ~(1 << i);
+ }
+ }
+ }
+
if (program->IndirectRegisterFiles & (1 << PROGRAM_TEMPORARY)) {
/* If temps are accessed with indirect addressing, declare temporaries
* in sequential order. Else, we declare them on demand elsewhere.