From ddbaf678c49d33cf60f1eac5069e3275baa2c685 Mon Sep 17 00:00:00 2001
From: notaz
Date: Sun, 4 Dec 2011 23:33:50 +0200
Subject: move some gpu status handling to core

this removes need to update each gpu plugin when this stuff is changed
---
 libpcsxcore/gpu.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 libpcsxcore/gpu.h

(limited to 'libpcsxcore/gpu.h')

diff --git a/libpcsxcore/gpu.h b/libpcsxcore/gpu.h
new file mode 100644
index 0000000..d02dca4
--- /dev/null
+++ b/libpcsxcore/gpu.h
@@ -0,0 +1,20 @@
+
+/*
+ * q: Why bother with GPU stuff in a plugin-based emu core?
+ * a: mostly because of busy bits, we have all the needed timing info
+ *    that GPU plugin doesn't.
+ */
+
+#define PSXGPU_LCF   (1<<31)
+#define PSXGPU_nBUSY (1<<26)
+#define PSXGPU_ILACE (1<<22)
+
+#define HW_GPU_STATUS psxHu32ref(0x1814)
+
+// TODO: handle com too
+#define PSXGPU_TIMING_BITS (PSXGPU_LCF | PSXGPU_nBUSY)
+
+#define gpuSyncPluginSR() { \
+	HW_GPU_STATUS &= PSXGPU_TIMING_BITS; \
+	HW_GPU_STATUS |= GPU_readStatus() & ~PSXGPU_TIMING_BITS; \
+}
-- 
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