OpenHarmony/third_party_mesa3d
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ir_to_mesa: Add support for shadow comparison to texture instructions.

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piglit lacks tests for this currently.
This commit is contained in:
Eric Anholt
2010-07-02 16:09:44 -07:00
parent d3983ca032
commit b61f4241f3
1 changed files with 15 additions and 2 deletions
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17
src/mesa/shader/ir_to_mesa.cpp
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@@ -83,6 +83,7 @@ public:
GLboolean cond_update; GLboolean cond_update;
int sampler; /**< sampler index */ int sampler; /**< sampler index */
int tex_target; /**< One of TEXTURE_*_INDEX */ int tex_target; /**< One of TEXTURE_*_INDEX */
GLboolean tex_shadow;
}; };
class temp_entry : public exec_node { class temp_entry : public exec_node {
@@ -1361,6 +1362,16 @@ ir_to_mesa_visitor::visit(ir_texture *ir)
} }
} }
if (ir->shadow_comparitor) {
/* Slot the shadow value in as the second to last component of the
* coord.
*/
ir->shadow_comparitor->accept(this);
coord_dst.writemask = WRITEMASK_Z;
ir_to_mesa_emit_op1(ir, OPCODE_MOV, coord_dst, this->result);
coord_dst.writemask = WRITEMASK_XYZW;
}
if (opcode == OPCODE_TXL || opcode == OPCODE_TXB) { if (opcode == OPCODE_TXL || opcode == OPCODE_TXB) {
/* Mesa IR stores lod or lod bias in the last channel of the coords. */ /* Mesa IR stores lod or lod bias in the last channel of the coords. */
coord_dst.writemask = WRITEMASK_W; coord_dst.writemask = WRITEMASK_W;
@@ -1370,6 +1381,9 @@ ir_to_mesa_visitor::visit(ir_texture *ir)
inst = ir_to_mesa_emit_op1(ir, opcode, result_dst, coord); inst = ir_to_mesa_emit_op1(ir, opcode, result_dst, coord);
if (ir->shadow_comparitor)
inst->tex_shadow = GL_TRUE;
ir_dereference_variable *sampler = ir->sampler->as_dereference_variable(); ir_dereference_variable *sampler = ir->sampler->as_dereference_variable();
assert(sampler); /* FINISHME: sampler arrays */ assert(sampler); /* FINISHME: sampler arrays */
/* generate the mapping, remove when we generate storage at /* generate the mapping, remove when we generate storage at
@@ -1396,8 +1410,6 @@ ir_to_mesa_visitor::visit(ir_texture *ir)
assert(!"FINISHME: other texture targets"); assert(!"FINISHME: other texture targets");
} }
assert(!ir->shadow_comparitor); /* FINISHME */
this->result = result_src; this->result = result_src;
} }
@@ -1726,6 +1738,7 @@ get_mesa_program(GLcontext *ctx, void *mem_ctx, struct gl_shader *shader)
mesa_inst->SrcReg[2] = mesa_src_reg_from_ir_src_reg(inst->src_reg[2]); mesa_inst->SrcReg[2] = mesa_src_reg_from_ir_src_reg(inst->src_reg[2]);
mesa_inst->TexSrcUnit = inst->sampler; mesa_inst->TexSrcUnit = inst->sampler;
mesa_inst->TexSrcTarget = inst->tex_target; mesa_inst->TexSrcTarget = inst->tex_target;
mesa_inst->TexShadow = inst->tex_shadow;
mesa_instruction_annotation[i] = inst->ir; mesa_instruction_annotation[i] = inst->ir;
mesa_inst++; mesa_inst++;