i965: Move FS backend structures to a header.

It's time to start splitting some of this up.

1 files changed, 406 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h
new file mode 100644
index 0000000000..5ec8c54582
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_fs.h
@@ -0,0 +1,406 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+extern "C" {
+
+#include <sys/types.h>
+
+#include "main/macros.h"
+#include "main/shaderobj.h"
+#include "main/uniforms.h"
+#include "program/prog_parameter.h"
+#include "program/prog_print.h"
+#include "program/prog_optimize.h"
+#include "program/register_allocate.h"
+#include "program/sampler.h"
+#include "program/hash_table.h"
+#include "brw_context.h"
+#include "brw_eu.h"
+#include "brw_wm.h"
+#include "talloc.h"
+}
+#include "../glsl/glsl_types.h"
+#include "../glsl/ir.h"
+
+enum register_file {
+   ARF = BRW_ARCHITECTURE_REGISTER_FILE,
+   GRF = BRW_GENERAL_REGISTER_FILE,
+   MRF = BRW_MESSAGE_REGISTER_FILE,
+   IMM = BRW_IMMEDIATE_VALUE,
+   FIXED_HW_REG, /* a struct brw_reg */
+   UNIFORM, /* prog_data->params[hw_reg] */
+   BAD_FILE
+};
+
+enum fs_opcodes {
+   FS_OPCODE_FB_WRITE = 256,
+   FS_OPCODE_RCP,
+   FS_OPCODE_RSQ,
+   FS_OPCODE_SQRT,
+   FS_OPCODE_EXP2,
+   FS_OPCODE_LOG2,
+   FS_OPCODE_POW,
+   FS_OPCODE_SIN,
+   FS_OPCODE_COS,
+   FS_OPCODE_DDX,
+   FS_OPCODE_DDY,
+   FS_OPCODE_LINTERP,
+   FS_OPCODE_TEX,
+   FS_OPCODE_TXB,
+   FS_OPCODE_TXL,
+   FS_OPCODE_DISCARD_NOT,
+   FS_OPCODE_DISCARD_AND,
+};
+
+
+class fs_reg {
+public:
+   /* Callers of this talloc-based new need not call delete. It's
+    * easier to just talloc_free 'ctx' (or any of its ancestors). */
+   static void* operator new(size_t size, void *ctx)
+   {
+      void *node;
+
+      node = talloc_size(ctx, size);
+      assert(node != NULL);
+
+      return node;
+   }
+
+   void init()
+   {
+      this->reg = 0;
+      this->reg_offset = 0;
+      this->negate = 0;
+      this->abs = 0;
+      this->hw_reg = -1;
+   }
+
+   /** Generic unset register constructor. */
+   fs_reg()
+   {
+      init();
+      this->file = BAD_FILE;
+   }
+
+   /** Immediate value constructor. */
+   fs_reg(float f)
+   {
+      init();
+      this->file = IMM;
+      this->type = BRW_REGISTER_TYPE_F;
+      this->imm.f = f;
+   }
+
+   /** Immediate value constructor. */
+   fs_reg(int32_t i)
+   {
+      init();
+      this->file = IMM;
+      this->type = BRW_REGISTER_TYPE_D;
+      this->imm.i = i;
+   }
+
+   /** Immediate value constructor. */
+   fs_reg(uint32_t u)
+   {
+      init();
+      this->file = IMM;
+      this->type = BRW_REGISTER_TYPE_UD;
+      this->imm.u = u;
+   }
+
+   /** Fixed brw_reg Immediate value constructor. */
+   fs_reg(struct brw_reg fixed_hw_reg)
+   {
+      init();
+      this->file = FIXED_HW_REG;
+      this->fixed_hw_reg = fixed_hw_reg;
+      this->type = fixed_hw_reg.type;
+   }
+
+   fs_reg(enum register_file file, int hw_reg);
+   fs_reg(class fs_visitor *v, const struct glsl_type *type);
+
+   /** Register file: ARF, GRF, MRF, IMM. */
+   enum register_file file;
+   /** virtual register number.  0 = fixed hw reg */
+   int reg;
+   /** Offset within the virtual register. */
+   int reg_offset;
+   /** HW register number.  Generally unset until register allocation. */
+   int hw_reg;
+   /** Register type.  BRW_REGISTER_TYPE_* */
+   int type;
+   bool negate;
+   bool abs;
+   struct brw_reg fixed_hw_reg;
+
+   /** Value for file == BRW_IMMMEDIATE_FILE */
+   union {
+      int32_t i;
+      uint32_t u;
+      float f;
+   } imm;
+};
+
+class fs_inst : public exec_node {
+public:
+   /* Callers of this talloc-based new need not call delete. It's
+    * easier to just talloc_free 'ctx' (or any of its ancestors). */
+   static void* operator new(size_t size, void *ctx)
+   {
+      void *node;
+
+      node = talloc_zero_size(ctx, size);
+      assert(node != NULL);
+
+      return node;
+   }
+
+   void init()
+   {
+      this->opcode = BRW_OPCODE_NOP;
+      this->saturate = false;
+      this->conditional_mod = BRW_CONDITIONAL_NONE;
+      this->predicated = false;
+      this->sampler = 0;
+      this->target = 0;
+      this->eot = false;
+      this->header_present = false;
+      this->shadow_compare = false;
+   }
+
+   fs_inst()
+   {
+      init();
+   }
+
+   fs_inst(int opcode)
+   {
+      init();
+      this->opcode = opcode;
+   }
+
+   fs_inst(int opcode, fs_reg dst, fs_reg src0)
+   {
+      init();
+      this->opcode = opcode;
+      this->dst = dst;
+      this->src[0] = src0;
+   }
+
+   fs_inst(int opcode, fs_reg dst, fs_reg src0, fs_reg src1)
+   {
+      init();
+      this->opcode = opcode;
+      this->dst = dst;
+      this->src[0] = src0;
+      this->src[1] = src1;
+   }
+
+   fs_inst(int opcode, fs_reg dst, fs_reg src0, fs_reg src1, fs_reg src2)
+   {
+      init();
+      this->opcode = opcode;
+      this->dst = dst;
+      this->src[0] = src0;
+      this->src[1] = src1;
+      this->src[2] = src2;
+   }
+
+   int opcode; /* BRW_OPCODE_* or FS_OPCODE_* */
+   fs_reg dst;
+   fs_reg src[3];
+   bool saturate;
+   bool predicated;
+   int conditional_mod; /**< BRW_CONDITIONAL_* */
+
+   int mlen; /**< SEND message length */
+   int sampler;
+   int target; /**< MRT target. */
+   bool eot;
+   bool header_present;
+   bool shadow_compare;
+
+   /** @{
+    * Annotation for the generated IR.  One of the two can be set.
+    */
+   ir_instruction *ir;
+   const char *annotation;
+   /** @} */
+};
+
+class fs_visitor : public ir_visitor
+{
+public:
+
+   fs_visitor(struct brw_wm_compile *c, struct brw_shader *shader)
+   {
+      this->c = c;
+      this->p = &c->func;
+      this->brw = p->brw;
+      this->fp = brw->fragment_program;
+      this->intel = &brw->intel;
+      this->ctx = &intel->ctx;
+      this->mem_ctx = talloc_new(NULL);
+      this->shader = shader;
+      this->fail = false;
+      this->variable_ht = hash_table_ctor(0,
+					  hash_table_pointer_hash,
+					  hash_table_pointer_compare);
+
+      this->frag_color = NULL;
+      this->frag_data = NULL;
+      this->frag_depth = NULL;
+      this->first_non_payload_grf = 0;
+
+      this->current_annotation = NULL;
+      this->annotation_string = NULL;
+      this->annotation_ir = NULL;
+      this->base_ir = NULL;
+
+      this->virtual_grf_sizes = NULL;
+      this->virtual_grf_next = 1;
+      this->virtual_grf_array_size = 0;
+      this->virtual_grf_def = NULL;
+      this->virtual_grf_use = NULL;
+
+      this->kill_emitted = false;
+   }
+
+   ~fs_visitor()
+   {
+      talloc_free(this->mem_ctx);
+      hash_table_dtor(this->variable_ht);
+   }
+
+   fs_reg *variable_storage(ir_variable *var);
+   int virtual_grf_alloc(int size);
+
+   void visit(ir_variable *ir);
+   void visit(ir_assignment *ir);
+   void visit(ir_dereference_variable *ir);
+   void visit(ir_dereference_record *ir);
+   void visit(ir_dereference_array *ir);
+   void visit(ir_expression *ir);
+   void visit(ir_texture *ir);
+   void visit(ir_if *ir);
+   void visit(ir_constant *ir);
+   void visit(ir_swizzle *ir);
+   void visit(ir_return *ir);
+   void visit(ir_loop *ir);
+   void visit(ir_loop_jump *ir);
+   void visit(ir_discard *ir);
+   void visit(ir_call *ir);
+   void visit(ir_function *ir);
+   void visit(ir_function_signature *ir);
+
+   fs_inst *emit(fs_inst inst);
+   void assign_curb_setup();
+   void calculate_urb_setup();
+   void assign_urb_setup();
+   void assign_regs();
+   void assign_regs_trivial();
+   void calculate_live_intervals();
+   bool propagate_constants();
+   bool register_coalesce();
+   bool dead_code_eliminate();
+   bool virtual_grf_interferes(int a, int b);
+   void generate_code();
+   void generate_fb_write(fs_inst *inst);
+   void generate_linterp(fs_inst *inst, struct brw_reg dst,
+			 struct brw_reg *src);
+   void generate_tex(fs_inst *inst, struct brw_reg dst, struct brw_reg src);
+   void generate_math(fs_inst *inst, struct brw_reg dst, struct brw_reg *src);
+   void generate_discard_not(fs_inst *inst, struct brw_reg temp);
+   void generate_discard_and(fs_inst *inst, struct brw_reg temp);
+   void generate_ddx(fs_inst *inst, struct brw_reg dst, struct brw_reg src);
+   void generate_ddy(fs_inst *inst, struct brw_reg dst, struct brw_reg src);
+
+   void emit_dummy_fs();
+   fs_reg *emit_fragcoord_interpolation(ir_variable *ir);
+   fs_reg *emit_frontfacing_interpolation(ir_variable *ir);
+   fs_reg *emit_general_interpolation(ir_variable *ir);
+   void emit_interpolation_setup_gen4();
+   void emit_interpolation_setup_gen6();
+   fs_inst *emit_texture_gen4(ir_texture *ir, fs_reg dst, fs_reg coordinate);
+   fs_inst *emit_texture_gen5(ir_texture *ir, fs_reg dst, fs_reg coordinate);
+   void emit_fb_writes();
+   void emit_assignment_writes(fs_reg &l, fs_reg &r,
+			       const glsl_type *type, bool predicated);
+
+   struct brw_reg interp_reg(int location, int channel);
+   int setup_uniform_values(int loc, const glsl_type *type);
+   void setup_builtin_uniform_values(ir_variable *ir);
+
+   struct brw_context *brw;
+   const struct gl_fragment_program *fp;
+   struct intel_context *intel;
+   GLcontext *ctx;
+   struct brw_wm_compile *c;
+   struct brw_compile *p;
+   struct brw_shader *shader;
+   void *mem_ctx;
+   exec_list instructions;
+
+   int *virtual_grf_sizes;
+   int virtual_grf_next;
+   int virtual_grf_array_size;
+   int *virtual_grf_def;
+   int *virtual_grf_use;
+
+   struct hash_table *variable_ht;
+   ir_variable *frag_color, *frag_data, *frag_depth;
+   int first_non_payload_grf;
+   int urb_setup[FRAG_ATTRIB_MAX];
+   bool kill_emitted;
+
+   /** @{ debug annotation info */
+   const char *current_annotation;
+   ir_instruction *base_ir;
+   const char **annotation_string;
+   ir_instruction **annotation_ir;
+   /** @} */
+
+   bool fail;
+
+   /* Result of last visit() method. */
+   fs_reg result;
+
+   fs_reg pixel_x;
+   fs_reg pixel_y;
+   fs_reg wpos_w;
+   fs_reg pixel_w;
+   fs_reg delta_x;
+   fs_reg delta_y;
+
+   int grf_used;
+};
+
+GLboolean brw_do_channel_expressions(struct exec_list *instructions);
+GLboolean brw_do_vector_splitting(struct exec_list *instructions);