[PATCH] wined3d: Implement SM5 f32tof16 opcode in glsl.

[Guillaume Charifi]

Signed-off-by: Guillaume Charifi <guillaume.charifi at sfr.fr>
---
 dlls/wined3d/arb_program_shader.c |  1 +
 dlls/wined3d/glsl_shader.c        | 38 ++++++++++++++++++++++++++++++++++++++
 dlls/wined3d/shader_sm4.c         |  2 ++
 dlls/wined3d/wined3d_private.h    |  1 +
 4 files changed, 42 insertions(+)

diff --git a/dlls/wined3d/arb_program_shader.c b/dlls/wined3d/arb_program_shader.c
index 24c1194..9aa4252 100644
--- a/dlls/wined3d/arb_program_shader.c
+++ b/dlls/wined3d/arb_program_shader.c
@@ -5286,6 +5286,7 @@ static const SHADER_HANDLER shader_arb_instruction_handler_table[WINED3DSIH_TABL
     /* WINED3DSIH_EQ                               */ NULL,
     /* WINED3DSIH_EXP                              */ shader_hw_scalar_op,
     /* WINED3DSIH_EXPP                             */ shader_hw_scalar_op,
+    /* WINED3DSIH_F32TOF16                         */ NULL,
     /* WINED3DSIH_FRC                              */ shader_hw_map2gl,
     /* WINED3DSIH_FTOI                             */ NULL,
     /* WINED3DSIH_FTOU                             */ NULL,
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index 376d110..d8edfdc 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -4343,6 +4343,43 @@ static void shader_glsl_ifc(const struct wined3d_shader_instruction *ins)
             src0_param.param_str, shader_glsl_get_rel_op(ins->flags), src1_param.param_str);
 }
 
+static void shader_glsl_f32tof16(const struct wined3d_shader_instruction *ins)
+{
+#define NB_COMPS 4
+    const DWORD write_masks[NB_COMPS] = {
+        WINED3DSP_WRITEMASK_0,
+        WINED3DSP_WRITEMASK_1,
+        WINED3DSP_WRITEMASK_2,
+        WINED3DSP_WRITEMASK_3,
+    };
+    const char dst_masks[NB_COMPS] = { 'x', 'y', 'z', 'w' };
+    struct glsl_src_param src_param;
+    DWORD write_mask;
+    char dst_mask[6];
+    char *dst_mask_ptr = dst_mask;
+
+    write_mask = shader_glsl_append_dst(ins->ctx->buffer, ins);
+
+    for (int i = 0; i < NB_COMPS; i++)
+    {
+        if (write_mask & write_masks[i])
+        {
+            shader_glsl_add_src_param(ins, &ins->src[0], write_masks[i], &src_param);
+            shader_addline(ins->ctx->buffer, "unpackHalf2x16(floatBitsToUint(%s)).x", src_param.param_str);
+            *dst_mask_ptr++ = dst_masks[i];
+        } else
+            shader_addline(ins->ctx->buffer, "0");
+
+        if(i != NB_COMPS - 1)
+            shader_addline(ins->ctx->buffer, ",");
+        shader_addline(ins->ctx->buffer, "\n");
+    }
+
+    *dst_mask_ptr++ = '\0';
+    shader_addline(ins->ctx->buffer, ")%s);\n", dst_mask);
+#undef NB_COMPS
+}
+
 static void shader_glsl_else(const struct wined3d_shader_instruction *ins)
 {
     shader_addline(ins->ctx->buffer, "} else {\n");
@@ -8704,6 +8741,7 @@ static const SHADER_HANDLER shader_glsl_instruction_handler_table[WINED3DSIH_TAB
     /* WINED3DSIH_EQ                               */ shader_glsl_relop,
     /* WINED3DSIH_EXP                              */ shader_glsl_scalar_op,
     /* WINED3DSIH_EXPP                             */ shader_glsl_expp,
+    /* WINED3DSIH_F32TOF16                         */ shader_glsl_f32tof16,
     /* WINED3DSIH_FRC                              */ shader_glsl_map2gl,
     /* WINED3DSIH_FTOI                             */ shader_glsl_to_int,
     /* WINED3DSIH_FTOU                             */ shader_glsl_to_uint,
diff --git a/dlls/wined3d/shader_sm4.c b/dlls/wined3d/shader_sm4.c
index c8fdb32..6c15751 100644
--- a/dlls/wined3d/shader_sm4.c
+++ b/dlls/wined3d/shader_sm4.c
@@ -215,6 +215,7 @@ enum wined3d_sm4_opcode
     WINED3D_SM5_OP_DERIV_RTY_COARSE                 = 0x7c,
     WINED3D_SM5_OP_DERIV_RTY_FINE                   = 0x7d,
     WINED3D_SM5_OP_GATHER4_C                        = 0x7e,
+    WINED3D_SM5_OP_F32TOF16                         = 0x82,
     WINED3D_SM5_OP_BFI                              = 0x8c,
     WINED3D_SM5_OP_BFREV                            = 0x8d,
     WINED3D_SM5_OP_SWAPC                            = 0x8e,
@@ -811,6 +812,7 @@ static const struct wined3d_sm4_opcode_info opcode_table[] =
     {WINED3D_SM5_OP_DERIV_RTY_COARSE,                 WINED3DSIH_DSY_COARSE,                       "f",    "f"},
     {WINED3D_SM5_OP_DERIV_RTY_FINE,                   WINED3DSIH_DSY_FINE,                         "f",    "f"},
     {WINED3D_SM5_OP_GATHER4_C,                        WINED3DSIH_GATHER4_C,                        "f",    "fRSf"},
+    {WINED3D_SM5_OP_F32TOF16,                         WINED3DSIH_F32TOF16,                         "f",    "f"},
     {WINED3D_SM5_OP_BFI,                              WINED3DSIH_BFI,                              "u",    "uuuu"},
     {WINED3D_SM5_OP_BFREV,                            WINED3DSIH_BFREV,                            "u",    "u"},
     {WINED3D_SM5_OP_SWAPC,                            WINED3DSIH_SWAPC,                            "ff",   "uff"},
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 41c127b..6f95a46 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -631,6 +631,7 @@ enum WINED3D_SHADER_INSTRUCTION_HANDLER
     WINED3DSIH_EQ,
     WINED3DSIH_EXP,
     WINED3DSIH_EXPP,
+    WINED3DSIH_F32TOF16,
     WINED3DSIH_FRC,
     WINED3DSIH_FTOI,
     WINED3DSIH_FTOU,
-- 
2.7.4