[PICA] Shader uploads

include/PICA/shader.hpp

@@ -0,0 +1,41 @@
+#pragma once
+#include <algorithm>
+#include <array>
+#include <cstring>
+#include "helpers.hpp"
+
+class PICAShader {
+	int bufferIndex; // Index of the next instruction to overwrite
+
+public:
+	std::array<u32, 512> loadedShader; // Currently loaded & active shader
+	std::array<u32, 512> bufferedShader; // Shader to be transferred when the SH_CODETRANSFER_END reg gets written to
+	
+	u32 boolUniform;
+	std::array<u32, 4> intUniforms;
+	std::array<u32, 8> floatUniforms;
+
+	void reset() {
+		loadedShader.fill(0);
+		bufferedShader.fill(0);
+
+		intUniforms.fill(0);
+		floatUniforms.fill(0);
+		boolUniform = 0;
+		bufferIndex = 0;
+	}
+
+	void finalize() {
+		std::memcpy(&loadedShader[0], &bufferedShader[0], 512 * sizeof(u32));
+	}
+
+	void setBufferIndex(u32 offset) {
+		if (offset != 0) Helpers::panic("Is this register 9 or 11 bit?");
+		bufferIndex = (offset >> 2) & 511;
+	}
+
+	void uploadWord(u32 word) {
+		bufferedShader[bufferIndex++] = word;
+		bufferIndex &= 511;
+	}
+};