Pica: Add command processor.
parent
98ad16a45b
commit
76a586de49
@ -1,11 +1,14 @@
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set(SRCS video_core.cpp
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set(SRCS command_processor.cpp
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utils.cpp
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video_core.cpp
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renderer_opengl/renderer_opengl.cpp)
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set(HEADERS math.h
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set(HEADERS command_processor.h
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math.h
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utils.h
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video_core.h
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renderer_base.h
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video_core.h
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renderer_opengl/renderer_opengl.h)
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add_library(video_core STATIC ${SRCS} ${HEADERS})
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@ -0,0 +1,60 @@
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include "pica.h"
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#include "command_processor.h"
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namespace Pica {
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Regs registers;
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namespace CommandProcessor {
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static inline void WritePicaReg(u32 id, u32 value) {
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u32 old_value = registers[id];
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registers[id] = value;
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switch(id) {
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// TODO: Perform actions for anything which requires special treatment here...
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default:
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break;
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}
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}
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static std::ptrdiff_t ExecuteCommandBlock(const u32* first_command_word) {
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const CommandHeader& header = *(const CommandHeader*)(&first_command_word[1]);
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u32* read_pointer = (u32*)first_command_word;
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// TODO: Take parameter mask into consideration!
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WritePicaReg(header.cmd_id, *read_pointer);
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read_pointer += 2;
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for (int i = 1; i < 1+header.extra_data_length; ++i) {
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u32 cmd = header.cmd_id + ((header.group_commands) ? i : 0);
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WritePicaReg(cmd, *read_pointer);
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++read_pointer;
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}
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// align read pointer to 8 bytes
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if ((first_command_word - read_pointer) % 2)
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++read_pointer;
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return read_pointer - first_command_word;
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}
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void ProcessCommandList(const u32* list, u32 size) {
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u32* read_pointer = (u32*)list;
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while (read_pointer < list + size) {
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read_pointer += ExecuteCommandBlock(read_pointer);
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}
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}
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} // namespace
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} // namespace
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@ -0,0 +1,31 @@
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#pragma once
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#include "common/bit_field.h"
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#include "common/common_types.h"
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#include "pica.h"
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namespace Pica {
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namespace CommandProcessor {
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union CommandHeader {
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u32 hex;
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BitField< 0, 16, u32> cmd_id;
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BitField<16, 4, u32> parameter_mask;
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BitField<20, 11, u32> extra_data_length;
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BitField<31, 1, u32> group_commands;
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};
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static_assert(std::is_standard_layout<CommandHeader>::value == true, "CommandHeader does not use standard layout");
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static_assert(sizeof(CommandHeader) == sizeof(u32), "CommandHeader has incorrect size!");
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void ProcessCommandList(const u32* list, u32 size);
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} // namespace
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} // namespace
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