diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_nir.cpp | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp index 7bb2d5259dc..d604a5d2cb6 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp @@ -3213,6 +3213,22 @@ fs_visitor::emit_non_coherent_fb_read(const fs_builder &bld, const fs_reg &dst, return inst; } +/** + * Actual coherent framebuffer read implemented using the native render target + * read message. Requires SKL+. + */ +static fs_inst * +emit_coherent_fb_read(const fs_builder &bld, const fs_reg &dst, unsigned target) +{ + assert(bld.shader->devinfo->gen >= 9); + fs_inst *inst = bld.emit(FS_OPCODE_FB_READ_LOGICAL, dst); + inst->target = target; + inst->regs_written = 4 * inst->dst.component_size(inst->exec_size) / + REG_SIZE; + + return inst; +} + static fs_reg alloc_temporary(const fs_builder &bld, unsigned size, fs_reg *regs, unsigned n) { @@ -3324,8 +3340,10 @@ fs_visitor::nir_emit_fs_intrinsic(const fs_builder &bld, const unsigned target = l - FRAG_RESULT_DATA0 + const_offset->u32[0]; const fs_reg tmp = bld.vgrf(dest.type, 4); - assert(!reinterpret_cast<const brw_wm_prog_key *>(key)->coherent_fb_fetch); - emit_non_coherent_fb_read(bld, tmp, target); + if (reinterpret_cast<const brw_wm_prog_key *>(key)->coherent_fb_fetch) + emit_coherent_fb_read(bld, tmp, target); + else + emit_non_coherent_fb_read(bld, tmp, target); for (unsigned j = 0; j < instr->num_components; j++) { bld.MOV(offset(dest, bld, j), |