Mesa (master): i965/vec4: Pass sampler index in src1 for texture ops

[Chris Forbes]

Module: Mesa
Branch: master
Commit: 1a3fd11aefdf6ed327f633ea7e13bae2e8a92ca7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1a3fd11aefdf6ed327f633ea7e13bae2e8a92ca7

Author: Chris Forbes <chrisf at ijw.co.nz>
Date:   Mon Aug  4 19:37:58 2014 +1200

i965/vec4: Pass sampler index in src1 for texture ops

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
Reviewed-by: Matt Turner <mattst88 at gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

---

 src/mesa/drivers/dri/i965/brw_vec4.h           |    6 +++---
 src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp |   12 ++++++++----
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h b/src/mesa/drivers/dri/i965/brw_vec4.h
index 950b592..74a0568 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.h
+++ b/src/mesa/drivers/dri/i965/brw_vec4.h
@@ -526,10 +526,10 @@ public:
    void emit_pack_half_2x16(dst_reg dst, src_reg src0);
    void emit_unpack_half_2x16(dst_reg dst, src_reg src0);
 
-   uint32_t gather_channel(ir_texture *ir, int sampler);
-   src_reg emit_mcs_fetch(ir_texture *ir, src_reg coordinate, int sampler);
+   uint32_t gather_channel(ir_texture *ir, uint32_t sampler);
+   src_reg emit_mcs_fetch(ir_texture *ir, src_reg coordinate, uint32_t sampler);
    void emit_gen6_gather_wa(uint8_t wa, dst_reg dst);
-   void swizzle_result(ir_texture *ir, src_reg orig_val, int sampler);
+   void swizzle_result(ir_texture *ir, src_reg orig_val, uint32_t sampler);
 
    void emit_ndc_computation();
    void emit_psiz_and_flags(struct brw_reg reg);
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index 822eb6c..a47c3a6 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -2277,7 +2277,7 @@ vec4_visitor::visit(ir_call *ir)
 }
 
 src_reg
-vec4_visitor::emit_mcs_fetch(ir_texture *ir, src_reg coordinate, int sampler)
+vec4_visitor::emit_mcs_fetch(ir_texture *ir, src_reg coordinate, uint32_t sampler)
 {
    vec4_instruction *inst = new(mem_ctx) vec4_instruction(this, SHADER_OPCODE_TXF_MCS);
    inst->base_mrf = 2;
@@ -2286,6 +2286,8 @@ vec4_visitor::emit_mcs_fetch(ir_texture *ir, src_reg coordinate, int sampler)
    inst->dst = dst_reg(this, glsl_type::uvec4_type);
    inst->dst.writemask = WRITEMASK_XYZW;
 
+   inst->src[1] = src_reg(sampler);
+
    /* parameters are: u, v, r, lod; lod will always be zero due to api restrictions */
    int param_base = inst->base_mrf;
    int coord_mask = (1 << ir->coordinate->type->vector_elements) - 1;
@@ -2304,7 +2306,7 @@ vec4_visitor::emit_mcs_fetch(ir_texture *ir, src_reg coordinate, int sampler)
 void
 vec4_visitor::visit(ir_texture *ir)
 {
-   int sampler =
+   uint32_t sampler =
       _mesa_get_sampler_uniform_value(ir->sampler, shader_prog, prog);
 
    /* When tg4 is used with the degenerate ZERO/ONE swizzles, don't bother
@@ -2437,6 +2439,8 @@ vec4_visitor::visit(ir_texture *ir)
    inst->dst.writemask = WRITEMASK_XYZW;
    inst->shadow_compare = ir->shadow_comparitor != NULL;
 
+   inst->src[1] = src_reg(sampler);
+
    /* MRF for the first parameter */
    int param_base = inst->base_mrf + inst->header_present;
 
@@ -2588,7 +2592,7 @@ vec4_visitor::emit_gen6_gather_wa(uint8_t wa, dst_reg dst)
  * Set up the gather channel based on the swizzle, for gather4.
  */
 uint32_t
-vec4_visitor::gather_channel(ir_texture *ir, int sampler)
+vec4_visitor::gather_channel(ir_texture *ir, uint32_t sampler)
 {
    ir_constant *chan = ir->lod_info.component->as_constant();
    int swiz = GET_SWZ(key->tex.swizzles[sampler], chan->value.i[0]);
@@ -2609,7 +2613,7 @@ vec4_visitor::gather_channel(ir_texture *ir, int sampler)
 }
 
 void
-vec4_visitor::swizzle_result(ir_texture *ir, src_reg orig_val, int sampler)
+vec4_visitor::swizzle_result(ir_texture *ir, src_reg orig_val, uint32_t sampler)
 {
    int s = key->tex.swizzles[sampler];