1 files changed, 186 insertions, 0 deletions

diff --git a/src/video_core/shader/debug_data.h b/src/video_core/shader/debug_data.h
new file mode 100644
index 000000000..9e82122e1
--- /dev/null
+++ b/src/video_core/shader/debug_data.h
@@ -0,0 +1,186 @@
+// Copyright 2016 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <vector>
+#include "common/common_types.h"
+#include "common/vector_math.h"
+#include "video_core/pica_types.h"
+
+namespace Pica {
+namespace Shader {
+
+/// Helper structure used to keep track of data useful for inspection of shader emulation
+template <bool full_debugging>
+struct DebugData;
+
+template <>
+struct DebugData<false> {
+    // TODO: Hide these behind and interface and move them to DebugData<true>
+    u32 max_offset = 0;    ///< maximum program counter ever reached
+    u32 max_opdesc_id = 0; ///< maximum swizzle pattern index ever used
+};
+
+template <>
+struct DebugData<true> {
+    /// Records store the input and output operands of a particular instruction.
+    struct Record {
+        enum Type {
+            // Floating point arithmetic operands
+            SRC1 = 0x1,
+            SRC2 = 0x2,
+            SRC3 = 0x4,
+
+            // Initial and final output operand value
+            DEST_IN = 0x8,
+            DEST_OUT = 0x10,
+
+            // Current and next instruction offset (in words)
+            CUR_INSTR = 0x20,
+            NEXT_INSTR = 0x40,
+
+            // Output address register value
+            ADDR_REG_OUT = 0x80,
+
+            // Result of a comparison instruction
+            CMP_RESULT = 0x100,
+
+            // Input values for conditional flow control instructions
+            COND_BOOL_IN = 0x200,
+            COND_CMP_IN = 0x400,
+
+            // Input values for a loop
+            LOOP_INT_IN = 0x800,
+        };
+
+        Math::Vec4<float24> src1;
+        Math::Vec4<float24> src2;
+        Math::Vec4<float24> src3;
+
+        Math::Vec4<float24> dest_in;
+        Math::Vec4<float24> dest_out;
+
+        s32 address_registers[2];
+        bool conditional_code[2];
+        bool cond_bool;
+        bool cond_cmp[2];
+        Math::Vec4<u8> loop_int;
+
+        u32 instruction_offset;
+        u32 next_instruction;
+
+        /// set of enabled fields (as a combination of Type flags)
+        unsigned mask = 0;
+    };
+
+    u32 max_offset = 0;    ///< maximum program counter ever reached
+    u32 max_opdesc_id = 0; ///< maximum swizzle pattern index ever used
+
+    /// List of records for each executed shader instruction
+    std::vector<DebugData<true>::Record> records;
+};
+
+/// Type alias for better readability
+using DebugDataRecord = DebugData<true>::Record;
+
+/// Helper function to set a DebugData<true>::Record field based on the template enum parameter.
+template <DebugDataRecord::Type type, typename ValueType>
+inline void SetField(DebugDataRecord& record, ValueType value);
+
+template <>
+inline void SetField<DebugDataRecord::SRC1>(DebugDataRecord& record, float24* value) {
+    record.src1.x = value[0];
+    record.src1.y = value[1];
+    record.src1.z = value[2];
+    record.src1.w = value[3];
+}
+
+template <>
+inline void SetField<DebugDataRecord::SRC2>(DebugDataRecord& record, float24* value) {
+    record.src2.x = value[0];
+    record.src2.y = value[1];
+    record.src2.z = value[2];
+    record.src2.w = value[3];
+}
+
+template <>
+inline void SetField<DebugDataRecord::SRC3>(DebugDataRecord& record, float24* value) {
+    record.src3.x = value[0];
+    record.src3.y = value[1];
+    record.src3.z = value[2];
+    record.src3.w = value[3];
+}
+
+template <>
+inline void SetField<DebugDataRecord::DEST_IN>(DebugDataRecord& record, float24* value) {
+    record.dest_in.x = value[0];
+    record.dest_in.y = value[1];
+    record.dest_in.z = value[2];
+    record.dest_in.w = value[3];
+}
+
+template <>
+inline void SetField<DebugDataRecord::DEST_OUT>(DebugDataRecord& record, float24* value) {
+    record.dest_out.x = value[0];
+    record.dest_out.y = value[1];
+    record.dest_out.z = value[2];
+    record.dest_out.w = value[3];
+}
+
+template <>
+inline void SetField<DebugDataRecord::ADDR_REG_OUT>(DebugDataRecord& record, s32* value) {
+    record.address_registers[0] = value[0];
+    record.address_registers[1] = value[1];
+}
+
+template <>
+inline void SetField<DebugDataRecord::CMP_RESULT>(DebugDataRecord& record, bool* value) {
+    record.conditional_code[0] = value[0];
+    record.conditional_code[1] = value[1];
+}
+
+template <>
+inline void SetField<DebugDataRecord::COND_BOOL_IN>(DebugDataRecord& record, bool value) {
+    record.cond_bool = value;
+}
+
+template <>
+inline void SetField<DebugDataRecord::COND_CMP_IN>(DebugDataRecord& record, bool* value) {
+    record.cond_cmp[0] = value[0];
+    record.cond_cmp[1] = value[1];
+}
+
+template <>
+inline void SetField<DebugDataRecord::LOOP_INT_IN>(DebugDataRecord& record, Math::Vec4<u8> value) {
+    record.loop_int = value;
+}
+
+template <>
+inline void SetField<DebugDataRecord::CUR_INSTR>(DebugDataRecord& record, u32 value) {
+    record.instruction_offset = value;
+}
+
+template <>
+inline void SetField<DebugDataRecord::NEXT_INSTR>(DebugDataRecord& record, u32 value) {
+    record.next_instruction = value;
+}
+
+/// Helper function to set debug information on the current shader iteration.
+template <DebugDataRecord::Type type, typename ValueType>
+inline void Record(DebugData<false>& debug_data, u32 offset, ValueType value) {
+    // Debugging disabled => nothing to do
+}
+
+template <DebugDataRecord::Type type, typename ValueType>
+inline void Record(DebugData<true>& debug_data, u32 offset, ValueType value) {
+    if (offset >= debug_data.records.size())
+        debug_data.records.resize(offset + 1);
+
+    SetField<type, ValueType>(debug_data.records[offset], value);
+    debug_data.records[offset].mask |= type;
+}
+
+} // namespace Shader
+} // namespace Pica