[PICA] Shader uploads

src/core/PICA/regs.cpp

@@ -1,4 +1,5 @@
-#include "gpu.hpp"
+#include "PICA/gpu.hpp"
+#include "PICA/regs.hpp"
 
 u32 GPU::readReg(u32 address) {
 	printf("Ignoring read from GPU register %08X\n", address);
@@ -10,7 +11,7 @@ void GPU::writeReg(u32 address, u32 value) {
 		const u32 index = (address - 0x1EF01000) / sizeof(u32);
 		writeInternalReg(index, value, 0xffffffff);
 	} else {
-		Helpers::panic("Ignoring write to GPU register %08X. Value: %08X\n", address, value);
+		printf("Ignoring write to external GPU register %08X. Value: %08X\n", address, value);
 	}
 }
 
@@ -24,6 +25,8 @@ u32 GPU::readInternalReg(u32 index) {
 }
 
 void GPU::writeInternalReg(u32 index, u32 value, u32 mask) {
+	using namespace PICAInternalRegs;
+
 	if (index > regNum) {
 		Helpers::panic("Tried to write to invalid GPU register. Index: %X, value: %08X\n", index, value);
 		return;
@@ -32,7 +35,22 @@ void GPU::writeInternalReg(u32 index, u32 value, u32 mask) {
 	u32 currentValue = regs[index];
 	u32 newValue = (currentValue & ~mask) | (value & mask); // Only overwrite the bits specified by "mask"
 
+	// TODO: Figure out if things like the shader index use the unmasked value or the masked one
+	// We currently use the unmasked value like Citra does
 	switch (index) {
+		case VertexShaderTransferEnd:
+			if (value != 0) shaderUnit.vs.finalize();
+			break;
+
+		case VertexShaderTransferIndex:
+			shaderUnit.vs.setBufferIndex(value);
+			break;
+
+		case VertexShaderData0: case VertexShaderData1: case VertexShaderData2: case VertexShaderData3:
+		case VertexShaderData4: case VertexShaderData5: case VertexShaderData6: case VertexShaderData7:
+			shaderUnit.vs.uploadWord(value);
+			break;
+
 		default:
 			printf("GPU: Wrote to unimplemented internal reg: %X, value: %08X\n", index, newValue);
 			break;