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-rw-r--r--src/mesa/drivers/dri/i965/brw_defines.h4
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_generator.cpp9
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_visitor.cpp8
3 files changed, 10 insertions, 11 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_defines.h b/src/mesa/drivers/dri/i965/brw_defines.h
index e7f6a2bad8e..adcf1db6147 100644
--- a/src/mesa/drivers/dri/i965/brw_defines.h
+++ b/src/mesa/drivers/dri/i965/brw_defines.h
@@ -912,6 +912,10 @@ enum opcode {
FS_OPCODE_DDX_COARSE,
FS_OPCODE_DDX_FINE,
+ /**
+ * Compute dFdy(), dFdyCoarse(), or dFdyFine().
+ * src1 is an immediate storing the key->render_to_fbo boolean.
+ */
FS_OPCODE_DDY_COARSE,
FS_OPCODE_DDY_FINE,
FS_OPCODE_PIXEL_X,
diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
index 27ba0bbadb8..16aa268946c 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
@@ -1860,13 +1860,8 @@ fs_generator::generate_code(const cfg_t *cfg, int dispatch_width)
break;
case FS_OPCODE_DDY_COARSE:
case FS_OPCODE_DDY_FINE:
- /* Make sure fp->UsesDFdy flag got set (otherwise there's no
- * guarantee that key->render_to_fbo is set).
- */
- assert(stage == MESA_SHADER_FRAGMENT &&
- ((gl_fragment_program *) prog)->UsesDFdy);
- generate_ddy(inst->opcode, dst, src[0],
- ((brw_wm_prog_key * const) this->key)->render_to_fbo);
+ assert(src[1].file == BRW_IMMEDIATE_VALUE);
+ generate_ddy(inst->opcode, dst, src[0], src[1].dw1.ud);
break;
case SHADER_OPCODE_GEN4_SCRATCH_WRITE:
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 1b0edaf3cdb..0b62496b81b 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -620,17 +620,17 @@ fs_visitor::visit(ir_expression *ir)
case ir_unop_dFdy:
/* Select one of the two opcodes based on the glHint value. */
if (fs_key->high_quality_derivatives)
- emit(FS_OPCODE_DDY_FINE, this->result, op[0]);
+ emit(FS_OPCODE_DDY_FINE, result, op[0], fs_reg(fs_key->render_to_fbo));
else
- emit(FS_OPCODE_DDY_COARSE, this->result, op[0]);
+ emit(FS_OPCODE_DDY_COARSE, result, op[0], fs_reg(fs_key->render_to_fbo));
break;
case ir_unop_dFdy_coarse:
- emit(FS_OPCODE_DDY_COARSE, this->result, op[0]);
+ emit(FS_OPCODE_DDY_COARSE, result, op[0], fs_reg(fs_key->render_to_fbo));
break;
case ir_unop_dFdy_fine:
- emit(FS_OPCODE_DDY_FINE, this->result, op[0]);
+ emit(FS_OPCODE_DDY_FINE, result, op[0], fs_reg(fs_key->render_to_fbo));
break;
case ir_binop_add: