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i965/fs: Define framebuffer read virtual opcode.

Browse source 
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Francisco Jerez 2016-07-21 16:52:33 -07:00
parent 71d639f69e
commit f2f75b0cf0
5 changed files with 29 additions and 0 deletions
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3
src/mesa/drivers/dri/i965/brw_defines.h
View file

@ -951,6 +951,9 @@ enum opcode {
FS_OPCODE_FB_WRITE_LOGICAL,
FS_OPCODE_REP_FB_WRITE,
FS_OPCODE_FB_READ,
SHADER_OPCODE_RCP,
SHADER_OPCODE_RSQ,
SHADER_OPCODE_SQRT,

2
src/mesa/drivers/dri/i965/brw_fs.cpp
View file

@ -272,6 +272,7 @@ fs_inst::is_send_from_grf() const
case FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD:
return src[1].file == VGRF;
case FS_OPCODE_FB_WRITE:
case FS_OPCODE_FB_READ:
return src[0].file == VGRF;
default:
if (is_tex())
@ -824,6 +825,7 @@ fs_inst::regs_read(int arg) const
{
switch (opcode) {
case FS_OPCODE_FB_WRITE:
case FS_OPCODE_FB_READ:
case SHADER_OPCODE_URB_WRITE_SIMD8:
case SHADER_OPCODE_URB_WRITE_SIMD8_PER_SLOT:
case SHADER_OPCODE_URB_WRITE_SIMD8_MASKED:

2
src/mesa/drivers/dri/i965/brw_fs.h
View file

@ -400,6 +400,8 @@ private:
struct brw_reg implied_header,
GLuint nr);
void generate_fb_write(fs_inst *inst, struct brw_reg payload);
void generate_fb_read(fs_inst *inst, struct brw_reg dst,
struct brw_reg payload);
void generate_urb_read(fs_inst *inst, struct brw_reg dst, struct brw_reg payload);
void generate_urb_write(fs_inst *inst, struct brw_reg payload);
void generate_cs_terminate(fs_inst *inst, struct brw_reg payload);

20
src/mesa/drivers/dri/i965/brw_fs_generator.cpp
View file

@ -353,6 +353,22 @@ fs_generator::generate_fb_write(fs_inst *inst, struct brw_reg payload)
}
}
void
fs_generator::generate_fb_read(fs_inst *inst, struct brw_reg dst,
struct brw_reg payload)
{
brw_wm_prog_data *prog_data =
reinterpret_cast<brw_wm_prog_data *>(this->prog_data);
const unsigned surf_index =
prog_data->binding_table.render_target_start + inst->target;
gen9_fb_READ(p, dst, payload, surf_index,
inst->header_size, inst->regs_written,
prog_data->persample_dispatch);
brw_mark_surface_used(&prog_data->base, surf_index);
}
void
fs_generator::generate_mov_indirect(fs_inst *inst,
struct brw_reg dst,
@ -1965,6 +1981,10 @@ fs_generator::generate_code(const cfg_t *cfg, int dispatch_width)
generate_fb_write(inst, src[0]);
break;
case FS_OPCODE_FB_READ:
generate_fb_read(inst, dst, src[0]);
break;
case FS_OPCODE_MOV_DISPATCH_TO_FLAGS:
generate_mov_dispatch_to_flags(inst);
break;

2
src/mesa/drivers/dri/i965/brw_shader.cpp
View file

@ -165,6 +165,8 @@ brw_instruction_name(const struct brw_device_info *devinfo, enum opcode op)
return "fb_write_logical";
case FS_OPCODE_REP_FB_WRITE:
return "rep_fb_write";
case FS_OPCODE_FB_READ:
return "fb_read";
case SHADER_OPCODE_RCP:
return "rcp";