ip: downgrade to 16-bit floats

1 files changed, 8 insertions, 6 deletions

diff --git a/rtl/gfx/gfx_defs.sv b/rtl/gfx/gfx_defs.sv
index e52f243..d01822a 100644
--- a/rtl/gfx/gfx_defs.sv
+++ b/rtl/gfx/gfx_defs.sv
@@ -1,14 +1,16 @@
 `ifndef GFX_DEFS_SV
 `define GFX_DEFS_SV
 
-`define FP_ADD_STAGES 13
-`define FP_MUL_STAGES 6
-
+`define FLOAT_BITS     16
 `define FLOATS_PER_VEC 4
 `define VECS_PER_MAT   4
 
-typedef logic[31:0] fp;
-typedef fp          vec4[`FLOATS_PER_VEC];
-typedef vec4        mat4[`VECS_PER_MAT];
+// Target de 100MHz con float16, rounding aproximado
+`define FP_ADD_STAGES 4 // ~325 LUTs
+`define FP_MUL_STAGES 3 // ~119 LUTs ~1 bloque DSP
+
+typedef logic[`FLOAT_BITS - 1:0] fp;
+typedef fp                       vec4[`FLOATS_PER_VEC];
+typedef vec4                     mat4[`VECS_PER_MAT];
 
 `endif