summaryrefslogtreecommitdiffstats
path: root/src/mesa
diff options
context:
space:
mode:
authorMatt Turner <[email protected]>2015-04-01 18:23:58 -0700
committerMatt Turner <[email protected]>2015-04-06 10:13:22 -0700
commitc8d65dd7138ba5683be16e692882e41d6dae7bf8 (patch)
tree38a03c4d00ea7c0a1333e6fa55befab53e214a7a /src/mesa
parent5fb735b75675bc4d6287f2a87c9baac65da5f405 (diff)
st/mesa: Remove unused emit_scs().
Was only used by the sin_reduced/cos_reduced cases, which themselves were impossible to reach. Reviewed-by: Jason Ekstrand <[email protected]>
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/state_tracker/st_glsl_to_tgsi.cpp98
1 files changed, 0 insertions, 98 deletions
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 96c1f355f34..67a4da751f6 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -441,9 +441,6 @@ public:
void emit_arl(ir_instruction *ir, st_dst_reg dst, st_src_reg src0);
- void emit_scs(ir_instruction *ir, unsigned op,
- st_dst_reg dst, const st_src_reg &src);
-
bool try_emit_mad(ir_expression *ir,
int mul_operand);
bool try_emit_mad_for_and_not(ir_expression *ir,
@@ -966,101 +963,6 @@ glsl_to_tgsi_visitor::emit_arl(ir_instruction *ir,
emit(NULL, op, dst, src0);
}
-/**
- * Emit an TGSI_OPCODE_SCS instruction
- *
- * The \c SCS opcode functions a bit differently than the other TGSI opcodes.
- * Instead of splatting its result across all four components of the
- * destination, it writes one value to the \c x component and another value to
- * the \c y component.
- *
- * \param ir IR instruction being processed
- * \param op Either \c TGSI_OPCODE_SIN or \c TGSI_OPCODE_COS depending
- * on which value is desired.
- * \param dst Destination register
- * \param src Source register
- */
-void
-glsl_to_tgsi_visitor::emit_scs(ir_instruction *ir, unsigned op,
- st_dst_reg dst,
- const st_src_reg &src)
-{
- /* Vertex programs cannot use the SCS opcode.
- */
- if (this->prog->Target == GL_VERTEX_PROGRAM_ARB) {
- emit_scalar(ir, op, dst, src);
- return;
- }
-
- const unsigned component = (op == TGSI_OPCODE_SIN) ? 0 : 1;
- const unsigned scs_mask = (1U << component);
- int done_mask = ~dst.writemask;
- st_src_reg tmp;
-
- assert(op == TGSI_OPCODE_SIN || op == TGSI_OPCODE_COS);
-
- /* If there are compnents in the destination that differ from the component
- * that will be written by the SCS instrution, we'll need a temporary.
- */
- if (scs_mask != unsigned(dst.writemask)) {
- tmp = get_temp(glsl_type::vec4_type);
- }
-
- for (unsigned i = 0; i < 4; i++) {
- unsigned this_mask = (1U << i);
- st_src_reg src0 = src;
-
- if ((done_mask & this_mask) != 0)
- continue;
-
- /* The source swizzle specified which component of the source generates
- * sine / cosine for the current component in the destination. The SCS
- * instruction requires that this value be swizzle to the X component.
- * Replace the current swizzle with a swizzle that puts the source in
- * the X component.
- */
- unsigned src0_swiz = GET_SWZ(src.swizzle, i);
-
- src0.swizzle = MAKE_SWIZZLE4(src0_swiz, src0_swiz,
- src0_swiz, src0_swiz);
- for (unsigned j = i + 1; j < 4; j++) {
- /* If there is another enabled component in the destination that is
- * derived from the same inputs, generate its value on this pass as
- * well.
- */
- if (!(done_mask & (1 << j)) &&
- GET_SWZ(src0.swizzle, j) == src0_swiz) {
- this_mask |= (1 << j);
- }
- }
-
- if (this_mask != scs_mask) {
- glsl_to_tgsi_instruction *inst;
- st_dst_reg tmp_dst = st_dst_reg(tmp);
-
- /* Emit the SCS instruction.
- */
- inst = emit(ir, TGSI_OPCODE_SCS, tmp_dst, src0);
- inst->dst[0].writemask = scs_mask;
-
- /* Move the result of the SCS instruction to the desired location in
- * the destination.
- */
- tmp.swizzle = MAKE_SWIZZLE4(component, component,
- component, component);
- inst = emit(ir, TGSI_OPCODE_SCS, dst, tmp);
- inst->dst[0].writemask = this_mask;
- } else {
- /* Emit the SCS instruction to write directly to the destination.
- */
- glsl_to_tgsi_instruction *inst = emit(ir, TGSI_OPCODE_SCS, dst, src0);
- inst->dst[0].writemask = scs_mask;
- }
-
- done_mask |= this_mask;
- }
-}
-
int
glsl_to_tgsi_visitor::add_constant(gl_register_file file,
gl_constant_value values[8], int size, int datatype,