*
* Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
+ * Copyright 2009-2010 VMware, Inc. All rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
#define TGSI_EXEC_H
#include "pipe/p_compiler.h"
+#include "pipe/p_state.h"
#if defined __cplusplus
extern "C" {
#endif
-#define MAX_LABELS (4 * 1024) /**< basically, max instructions */
#define NUM_CHANNELS 4 /* R,G,B,A */
#define QUAD_SIZE 4 /* 4 pixel/quad */
+
/**
* Registers may be treated as float, signed int or unsigned int.
*/
float dady[NUM_CHANNELS];
};
+enum tgsi_sampler_control {
+ tgsi_sampler_lod_bias,
+ tgsi_sampler_lod_explicit
+};
+
/**
* Information for sampling textures, which must be implemented
* by code outside the TGSI executor.
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE]);
};
-/**
- * For branching/calling subroutines.
- */
-struct tgsi_exec_labels
-{
- unsigned labels[MAX_LABELS][2];
- unsigned count;
-};
-
-
#define TGSI_EXEC_NUM_TEMPS 128
-#define TGSI_EXEC_NUM_TEMP_EXTRAS 6
#define TGSI_EXEC_NUM_IMMEDIATES 256
+#define TGSI_EXEC_NUM_TEMP_ARRAYS 8
/*
* Locations of various utility registers (_I = Index, _C = Channel)
#define TGSI_EXEC_MASK_I (TGSI_EXEC_NUM_TEMPS + 3)
#define TGSI_EXEC_MASK_C 2
+/* 4 register buffer for various purposes */
#define TGSI_EXEC_TEMP_R0 (TGSI_EXEC_NUM_TEMPS + 4)
+#define TGSI_EXEC_NUM_TEMP_R 4
+
+#define TGSI_EXEC_TEMP_ADDR (TGSI_EXEC_NUM_TEMPS + 8)
+#define TGSI_EXEC_NUM_ADDRS 1
+
+/* predicate register */
+#define TGSI_EXEC_TEMP_P0 (TGSI_EXEC_NUM_TEMPS + 9)
+#define TGSI_EXEC_NUM_PREDS 1
-#define TGSI_EXEC_TEMP_ADDR (TGSI_EXEC_NUM_TEMPS + 5)
+#define TGSI_EXEC_NUM_TEMP_EXTRAS 10
-#define TGSI_EXEC_MAX_COND_NESTING 20
-#define TGSI_EXEC_MAX_LOOP_NESTING 20
-#define TGSI_EXEC_MAX_CALL_NESTING 20
+
+#define TGSI_EXEC_MAX_NESTING 32
+#define TGSI_EXEC_MAX_COND_NESTING TGSI_EXEC_MAX_NESTING
+#define TGSI_EXEC_MAX_LOOP_NESTING TGSI_EXEC_MAX_NESTING
+#define TGSI_EXEC_MAX_SWITCH_NESTING TGSI_EXEC_MAX_NESTING
+#define TGSI_EXEC_MAX_CALL_NESTING TGSI_EXEC_MAX_NESTING
/* The maximum number of input attributes per vertex. For 2D
* input register files, this is the stride between two 1D
*/
#define TGSI_EXEC_MAX_CONST_BUFFER 4096
+/* The maximum number of vertices per primitive */
+#define TGSI_MAX_PRIM_VERTICES 6
+
+/* The maximum number of primitives to be generated */
+#define TGSI_MAX_PRIMITIVES 64
+
+/* The maximum total number of vertices */
+#define TGSI_MAX_TOTAL_VERTICES (TGSI_MAX_PRIM_VERTICES * TGSI_MAX_PRIMITIVES * PIPE_MAX_ATTRIBS)
+
+/** function call/activation record */
+struct tgsi_call_record
+{
+ uint CondStackTop;
+ uint LoopStackTop;
+ uint ContStackTop;
+ int SwitchStackTop;
+ int BreakStackTop;
+ uint ReturnAddr;
+};
+
+
+/* Switch-case block state. */
+struct tgsi_switch_record {
+ uint mask; /**< execution mask */
+ union tgsi_exec_channel selector; /**< a value case statements are compared to */
+ uint defaultMask; /**< non-execute mask for default case */
+};
+
+
+enum tgsi_break_type {
+ TGSI_EXEC_BREAK_INSIDE_LOOP,
+ TGSI_EXEC_BREAK_INSIDE_SWITCH
+};
+
+
+#define TGSI_EXEC_MAX_BREAK_STACK (TGSI_EXEC_MAX_LOOP_NESTING + TGSI_EXEC_MAX_SWITCH_NESTING)
+
+
/**
* Run-time virtual machine state for executing TGSI shader.
*/
struct tgsi_exec_machine
{
/* Total = program temporaries + internal temporaries
- * + 1 padding to align to 16 bytes
*/
- struct tgsi_exec_vector _Temps[TGSI_EXEC_NUM_TEMPS +
- TGSI_EXEC_NUM_TEMP_EXTRAS + 1];
+ struct tgsi_exec_vector Temps[TGSI_EXEC_NUM_TEMPS +
+ TGSI_EXEC_NUM_TEMP_EXTRAS];
+ struct tgsi_exec_vector TempArray[TGSI_EXEC_NUM_TEMP_ARRAYS][TGSI_EXEC_NUM_TEMPS];
+
+ float Imms[TGSI_EXEC_NUM_IMMEDIATES][4];
+
+ float ImmArray[TGSI_EXEC_NUM_IMMEDIATES][4];
+
+ struct tgsi_exec_vector Inputs[TGSI_MAX_PRIM_VERTICES * PIPE_MAX_ATTRIBS];
+ struct tgsi_exec_vector Outputs[TGSI_MAX_TOTAL_VERTICES];
- /*
- * This will point to _Temps after aligning to 16B boundary.
- */
- struct tgsi_exec_vector *Temps;
struct tgsi_exec_vector *Addrs;
+ struct tgsi_exec_vector *Predicates;
struct tgsi_sampler **Samplers;
- float Imms[TGSI_EXEC_NUM_IMMEDIATES][4];
unsigned ImmLimit;
- const float (*Consts)[4];
- struct tgsi_exec_vector *Inputs;
- struct tgsi_exec_vector *Outputs;
+
+ const void *Consts[PIPE_MAX_CONSTANT_BUFFERS];
+ unsigned ConstsSize[PIPE_MAX_CONSTANT_BUFFERS];
+
const struct tgsi_token *Tokens; /**< Declarations, instructions */
unsigned Processor; /**< TGSI_PROCESSOR_x */
/* GEOMETRY processor only. */
unsigned *Primitives;
+ unsigned NumOutputs;
+ unsigned MaxGeometryShaderOutputs;
/* FRAGMENT processor only. */
const struct tgsi_interp_coef *InterpCoefs;
struct tgsi_exec_vector QuadPos;
+ float Face; /**< +1 if front facing, -1 if back facing */
/* Conditional execution masks */
uint CondMask; /**< For IF/ELSE/ENDIF */
uint FuncMask; /**< For function calls */
uint ExecMask; /**< = CondMask & LoopMask */
+ /* Current switch-case state. */
+ struct tgsi_switch_record Switch;
+
+ /* Current break type. */
+ enum tgsi_break_type BreakType;
+
/** Condition mask stack (for nested conditionals) */
uint CondStack[TGSI_EXEC_MAX_COND_NESTING];
int CondStackTop;
uint LoopStack[TGSI_EXEC_MAX_LOOP_NESTING];
int LoopStackTop;
+ /** Loop label stack */
+ uint LoopLabelStack[TGSI_EXEC_MAX_LOOP_NESTING];
+ int LoopLabelStackTop;
+
/** Loop continue mask stack (see comments in tgsi_exec.c) */
uint ContStack[TGSI_EXEC_MAX_LOOP_NESTING];
int ContStackTop;
+ /** Switch case stack */
+ struct tgsi_switch_record SwitchStack[TGSI_EXEC_MAX_SWITCH_NESTING];
+ int SwitchStackTop;
+
+ enum tgsi_break_type BreakStack[TGSI_EXEC_MAX_BREAK_STACK];
+ int BreakStackTop;
+
/** Function execution mask stack (for executing subroutine code) */
uint FuncStack[TGSI_EXEC_MAX_CALL_NESTING];
int FuncStackTop;
/** Function call stack for saving/restoring the program counter */
- uint CallStack[TGSI_EXEC_MAX_CALL_NESTING];
+ struct tgsi_call_record CallStack[TGSI_EXEC_MAX_CALL_NESTING];
int CallStackTop;
struct tgsi_full_instruction *Instructions;
struct tgsi_full_declaration *Declarations;
uint NumDeclarations;
- struct tgsi_exec_labels Labels;
};
+struct tgsi_exec_machine *
+tgsi_exec_machine_create( void );
+
void
-tgsi_exec_machine_init(
- struct tgsi_exec_machine *mach );
+tgsi_exec_machine_destroy(struct tgsi_exec_machine *mach);
void
}
+extern void
+tgsi_exec_set_constant_buffers(struct tgsi_exec_machine *mach,
+ unsigned num_bufs,
+ const void **bufs,
+ const unsigned *buf_sizes);
+
+
#if defined __cplusplus
} /* extern "C" */
#endif