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Clean up DE Render

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This commit is contained in:
Lee Lup Yuen 2022-11-06 21:06:03 +08:00
parent a753f7e141
commit 332a947e86
1 changed files with 31 additions and 14 deletions
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45
render.zig
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@ -467,22 +467,39 @@ fn initUiChannel(
return;
}
// TODO: Set Overlay (Assume Layer = 0)
// OVL_UI_ATTR_CTL (UI Overlay Attribute Control) at OVL_UI Offset 0x00
// For Channel 1: Set to 0xFF00 0405
// For Channel 2: Set to 0xFF00 0005
// For Channel 3: Set to 0x7F00 0005
// LAY_GLBALPHA (Bits 24 to 31) = 0xFF or 0x7F
// (Global Alpha Value is Opaque or Semi-Transparent)
// LAY_FBFMT (Bits 8 to 12) = 4 or 0
// (Input Data Format is XRGB 8888 or ARGB 8888)
// LAY_ALPHA_MODE (Bits 1 to 2) = 2
// (Global Alpha is mixed with Pixel Alpha)
// (Input Alpha Value = Global Alpha Value * Pixel’s Alpha Value)
// LAY_EN (Bit 0) = 1 (Enable Layer)
// (DE Page 102, 0x110 3000 / 0x110 4000 / 0x110 5000)
// TODO: Set Overlay (Assume Layer = 0)
// OVL_UI_ATTR_CTL (UI Overlay Attribute Control) at OVL_UI Offset 0x00
// For Channel 1: Set to 0xFF00 0405
// For Channel 2: Set to 0xFF00 0005
// For Channel 3: Set to 0x7F00 0005
// LAY_GLBALPHA (Bits 24 to 31) = 0xFF or 0x7F
// (Global Alpha Value is Opaque or Semi-Transparent)
// LAY_FBFMT (Bits 8 to 12) = 4 or 0
// (Input Data Format is XRGB 8888 or ARGB 8888)
// LAY_ALPHA_MODE (Bits 1 to 2) = 2
// (Global Alpha is mixed with Pixel Alpha)
// (Input Alpha Value = Global Alpha Value * Pixel’s Alpha Value)
// LAY_EN (Bit 0) = 1 (Enable Layer)
// (DE Page 102, 0x110 3000 / 0x110 4000 / 0x110 5000)
debug("Channel {}: Set Overlay ({} x {})", .{ channel, xres, yres });
const LAY_GLBALPHA: u32 = switch (channel) { // For Global Alpha Value...
1 => 0xFF, // Channel 1: Opaque
2 => 0xFF, // Channel 2: Opaque
3 => 0x7F, // Channel 3: Semi-Transparent
else => unreachable,
} << 24; // Bits 24 to 31
const LAY_FBFMT: u13 = switch (channel) { // For Input Data Format...
1 => 4, // Channel 1: XRGB 8888
2 => 0, // Channel 2: ARGB 8888
3 => 0, // Channel 3: ARGB 8888
else => unreachable,
} << 8; // Bits 8 to 12
_ = LAY_GLBALPHA;
_ = LAY_FBFMT;
const OVL_UI_ATTR_CTL = OVL_UI_BASE_ADDRESS + 0x00;
if (channel == 1) { putreg32(0xff00_0405, OVL_UI_ATTR_CTL); }
else if (channel == 2) { putreg32(0xff00_0005, OVL_UI_ATTR_CTL); }