rebase master update

2021-07-30 21:03:14 -07:00
parent 79fd92a1b4
commit bb1ceffadd
86 changed files with 6111 additions and 132 deletions
--- a/hw/rtl/tex_unit/VX_tex_format.v
+++ b/hw/rtl/tex_unit/VX_tex_format.v
@@ -0,0 +1,58 @@
+`include "VX_tex_define.vh"
+
+module VX_tex_format #(
+    parameter CORE_ID = 0
+) (
+    input wire [`TEX_FORMAT_BITS-1:0] format,
+    input wire [31:0]   texel_in,    
+    output wire [31:0]  texel_out
+);  
+    `UNUSED_PARAM (CORE_ID)
+
+    reg [31:0] texel_out_r;
+
+    always @(*) begin        
+        case (format)
+        `TEX_FORMAT_R5G6B5: begin
+            texel_out_r[07:00] = `TEX_COLOR_BITS'({texel_in[15:11],texel_in[15:13]});  
+            texel_out_r[15:08] = `TEX_COLOR_BITS'({texel_in[10:5],texel_in[10:9]});
+            texel_out_r[23:16] = `TEX_COLOR_BITS'({texel_in[4:0],texel_in[4:2]});
+            texel_out_r[31:24] = {`TEX_COLOR_BITS{1'b1}};
+        end
+        `TEX_FORMAT_R4G4B4A4: begin
+            texel_out_r[07:00] = `TEX_COLOR_BITS'({texel_in[11:8],texel_in[15:12]});
+            texel_out_r[15:08] = `TEX_COLOR_BITS'({2{texel_in[7:4]}});
+            texel_out_r[23:16] = `TEX_COLOR_BITS'({2{texel_in[3:0]}});
+            texel_out_r[31:24] = `TEX_COLOR_BITS'({2{texel_in[15:12]}});
+        end
+        `TEX_FORMAT_L8A8: begin
+            texel_out_r[07:00] = `TEX_COLOR_BITS'(texel_in[7:0]);
+            texel_out_r[15:08] = `TEX_COLOR_BITS'(texel_in[7:0]);
+            texel_out_r[23:16] = `TEX_COLOR_BITS'(texel_in[7:0]);
+            texel_out_r[31:24] = `TEX_COLOR_BITS'(texel_in[15:8]);
+        end
+        `TEX_FORMAT_A8: begin
+            texel_out_r[07:00] = `TEX_COLOR_BITS'(0);
+            texel_out_r[15:08] = `TEX_COLOR_BITS'(0);
+            texel_out_r[23:16] = `TEX_COLOR_BITS'(0);
+            texel_out_r[31:24] = `TEX_COLOR_BITS'(texel_in[7:0]);
+        end
+        `TEX_FORMAT_L8: begin
+            texel_out_r[07:00] = `TEX_COLOR_BITS'(texel_in[7:0]);
+            texel_out_r[15:08] = `TEX_COLOR_BITS'(texel_in[7:0]);
+            texel_out_r[23:16] = `TEX_COLOR_BITS'(texel_in[7:0]);
+            texel_out_r[31:24] = {`TEX_COLOR_BITS{1'b1}};
+        end
+        // `TEX_FORMAT_R8G8B8A8
+        default: begin 
+            texel_out_r[07:00] = `TEX_COLOR_BITS'(texel_in[7:0]);
+            texel_out_r[15:08] = `TEX_COLOR_BITS'(texel_in[15:8]);
+            texel_out_r[23:16] = `TEX_COLOR_BITS'(texel_in[23:16]);
+            texel_out_r[31:24] = `TEX_COLOR_BITS'(texel_in[31:24]);
+        end
+        endcase
+    end
+
+    assign texel_out = texel_out_r;
+
+endmodule