diff options
| author | Chris Forbes <[email protected]> | 2013-10-08 22:19:58 +1300 |
|---|---|---|
| committer | Chris Forbes <[email protected]> | 2013-10-26 22:10:02 +1300 |
| commit | fb08769bb62510b10db61771eaf140194f6cc178 (patch) | |
| tree | f0c6cc09d4d91b179218589ef3a819719e63d0e2 | |
| parent | 938d9098943c11e4583ad01270ab3c8f10ceb934 (diff) | |
i965/vs: add support for gather4 with nonconstant offsets
Signed-off-by: Chris Forbes <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp index 68d6cd92532..31eda756916 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp @@ -2202,6 +2202,13 @@ vec4_visitor::visit(ir_texture *ir) shadow_comparitor = this->result; } + bool has_nonconstant_offset = ir->offset && !ir->offset->as_constant(); + src_reg offset_value; + if (has_nonconstant_offset) { + ir->offset->accept(this); + offset_value = src_reg(this->result); + } + const glsl_type *lod_type = NULL, *sample_index_type = NULL; src_reg lod, dPdx, dPdy, sample_index; switch (ir->op) { @@ -2259,7 +2266,10 @@ vec4_visitor::visit(ir_texture *ir) inst = new(mem_ctx) vec4_instruction(this, SHADER_OPCODE_TXS); break; case ir_tg4: - inst = new(mem_ctx) vec4_instruction(this, SHADER_OPCODE_TG4); + if (has_nonconstant_offset) + inst = new(mem_ctx) vec4_instruction(this, SHADER_OPCODE_TG4_OFFSET); + else + inst = new(mem_ctx) vec4_instruction(this, SHADER_OPCODE_TG4); break; case ir_query_levels: inst = new(mem_ctx) vec4_instruction(this, SHADER_OPCODE_TXS); @@ -2395,6 +2405,10 @@ vec4_visitor::visit(ir_texture *ir) emit(MOV(dst_reg(MRF, param_base + 2, type, WRITEMASK_XYZ), dPdy)); inst->mlen += 2; } + } else if (ir->op == ir_tg4 && has_nonconstant_offset) { + emit(MOV(dst_reg(MRF, param_base + 1, glsl_type::ivec2_type, WRITEMASK_XY), + offset_value)); + inst->mlen++; } } |