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/*
* Copyright © 2014 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.
*
*/
#ifndef GEN6_GS_VISITOR_H
#define GEN6_GS_VISITOR_H
#include "brw_vec4.h"
#include "brw_vec4_gs_visitor.h"
#ifdef __cplusplus
namespace brw {
class gen6_gs_visitor : public vec4_gs_visitor
{
public:
gen6_gs_visitor(const struct brw_compiler *comp,
void *log_data,
struct brw_gs_compile *c,
struct brw_gs_prog_data *prog_data,
struct gl_program *prog,
const nir_shader *shader,
void *mem_ctx,
bool no_spills,
int shader_time_index) :
vec4_gs_visitor(comp, log_data, c, prog_data, shader, mem_ctx, no_spills,
shader_time_index),
prog(prog)
{
}
protected:
virtual void emit_prolog();
virtual void emit_thread_end();
virtual void gs_emit_vertex(int stream_id);
virtual void gs_end_primitive();
virtual void emit_urb_write_header(int mrf);
virtual void emit_urb_write_opcode(bool complete,
int base_mrf,
int last_mrf,
int urb_offset);
virtual void setup_payload();
private:
void xfb_write();
void xfb_program(unsigned vertex, unsigned num_verts);
void xfb_setup();
int get_vertex_output_offset_for_varying(int vertex, int varying);
const struct gl_program *prog;
src_reg vertex_output;
src_reg vertex_output_offset;
src_reg temp;
src_reg first_vertex;
src_reg prim_count;
src_reg primitive_id;
/* Transform Feedback members */
src_reg sol_prim_written;
src_reg svbi;
src_reg max_svbi;
src_reg destination_indices;
};
} /* namespace brw */
#endif /* __cplusplus */
#endif /* GEN6_GS_VISITOR_H */
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