189 lines
6.3 KiB
C++
189 lines
6.3 KiB
C++
// Copyright (C) 2003-2008 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "GLUtil.h"
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#include "Profiler.h"
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#include "x64Emitter.h"
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#include "ABI.h"
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#include "MemoryUtil.h"
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#include "VertexShader.h"
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#include "CPMemory.h"
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#include "NativeVertexFormat.h"
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#define COMPILED_CODE_SIZE 4096
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#ifdef _WIN32
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#define USE_JIT
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#endif
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// Note the use of CallCdeclFunction3I etc.
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// This is a horrible hack that is necessary because in 64-bit mode, Opengl32.dll is based way, way above the 32-bit
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// address space that is within reach of a CALL, and just doing &fn gives us these high uncallable addresses. So we
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// want to grab the function pointers from the import table instead.
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// This problem does not apply to glew functions, only core opengl32 functions.
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// Here's some global state. We only use this to keep track of what we've sent to the OpenGL state
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// machine.
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#ifdef USE_JIT
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DECLARE_IMPORT(glNormalPointer);
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DECLARE_IMPORT(glVertexPointer);
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DECLARE_IMPORT(glColorPointer);
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DECLARE_IMPORT(glTexCoordPointer);
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#endif
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NativeVertexFormat::NativeVertexFormat()
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{
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#ifdef USE_JIT
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m_compiledCode = (u8 *)AllocateExecutableMemory(COMPILED_CODE_SIZE, false);
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if (m_compiledCode) {
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memset(m_compiledCode, 0, COMPILED_CODE_SIZE);
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}
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#endif
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}
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NativeVertexFormat::~NativeVertexFormat()
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{
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#ifdef USE_JIT
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FreeMemoryPages(m_compiledCode, COMPILED_CODE_SIZE);
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m_compiledCode = 0;
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#endif
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}
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inline GLuint VarToGL(VarType t)
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{
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static const GLuint lookup[5] = {GL_BYTE, GL_UNSIGNED_BYTE, GL_SHORT, GL_UNSIGNED_SHORT, GL_FLOAT};
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return lookup[t];
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}
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void NativeVertexFormat::Initialize(const PortableVertexDeclaration &_vtx_decl)
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{
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using namespace Gen;
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if (_vtx_decl.stride & 3) {
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// We will not allow vertex components causing uneven strides.
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PanicAlert("Uneven vertex stride: %i", _vtx_decl.stride);
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}
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#ifdef USE_JIT
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// Alright, we have our vertex declaration. Compile some crazy code to set it quickly using GL.
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u8 *old_code_ptr = GetWritableCodePtr();
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SetCodePtr(m_compiledCode);
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ABI_EmitPrologue(6);
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CallCdeclFunction4_I(glVertexPointer, 3, GL_FLOAT, _vtx_decl.stride, 0);
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if (_vtx_decl.num_normals >= 1) {
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CallCdeclFunction3_I(glNormalPointer, VarToGL(_vtx_decl.normal_gl_type), _vtx_decl.stride, _vtx_decl.normal_offset[0]);
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if (_vtx_decl.num_normals == 3) {
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CallCdeclFunction6((void *)glVertexAttribPointer, SHADER_NORM1_ATTRIB, _vtx_decl.normal_gl_size, VarToGL(_vtx_decl.normal_gl_type), GL_TRUE, _vtx_decl.stride, _vtx_decl.normal_offset[1]);
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CallCdeclFunction6((void *)glVertexAttribPointer, SHADER_NORM2_ATTRIB, _vtx_decl.normal_gl_size, VarToGL(_vtx_decl.normal_gl_type), GL_TRUE, _vtx_decl.stride, _vtx_decl.normal_offset[2]);
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}
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}
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for (int i = 0; i < 2; i++) {
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if (_vtx_decl.color_offset[i] != -1) {
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if (i == 0)
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CallCdeclFunction4_I(glColorPointer, 4, GL_UNSIGNED_BYTE, _vtx_decl.stride, _vtx_decl.color_offset[i]);
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else
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CallCdeclFunction4((void *)glSecondaryColorPointer, 4, GL_UNSIGNED_BYTE, _vtx_decl.stride, _vtx_decl.color_offset[i]);
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}
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}
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for (int i = 0; i < 8; i++) {
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if (_vtx_decl.texcoord_offset[i] != -1) {
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int id = GL_TEXTURE0 + i;
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#ifdef _M_X64
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#ifdef _MSC_VER
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MOV(32, R(RCX), Imm32(id));
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#else
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MOV(32, R(RDI), Imm32(id));
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#endif
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#else
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ABI_AlignStack(1 * 4);
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PUSH(32, Imm32(id));
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#endif
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CALL((void *)glClientActiveTexture);
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#ifndef _M_X64
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#ifdef _WIN32
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// don't inc stack on windows, stdcall
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#else
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ABI_RestoreStack(1 * 4);
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#endif
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#endif
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CallCdeclFunction4_I(
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glTexCoordPointer, _vtx_decl.texcoord_size[i], VarToGL(_vtx_decl.texcoord_gl_type[i]),
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_vtx_decl.stride, _vtx_decl.texcoord_offset[i]);
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}
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}
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if (_vtx_decl.posmtx_offset != -1) {
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CallCdeclFunction6((void *)glVertexAttribPointer, SHADER_POSMTX_ATTRIB, 4, GL_UNSIGNED_BYTE, GL_FALSE, _vtx_decl.stride, _vtx_decl.posmtx_offset);
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}
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ABI_EmitEpilogue(6);
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if (Gen::GetCodePtr() - (u8*)m_compiledCode > COMPILED_CODE_SIZE)
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{
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Crash();
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}
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SetCodePtr(old_code_ptr);
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#endif
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this->vtx_decl = _vtx_decl;
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}
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void NativeVertexFormat::SetupVertexPointers() const {
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// Cast a pointer to compiled code to a pointer to a function taking no parameters, through a (void *) cast first to
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// get around type checking errors, and call it.
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#ifdef USE_JIT
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((void (*)())(void*)m_compiledCode)();
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#else
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glVertexPointer(3, GL_FLOAT, vtx_decl.stride, 0);
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if (vtx_decl.num_normals >= 1) {
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glNormalPointer(VarToGL(vtx_decl.normal_gl_type), vtx_decl.stride, (void *)vtx_decl.normal_offset[0]);
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if (vtx_decl.num_normals == 3) {
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glVertexAttribPointer(SHADER_NORM1_ATTRIB, vtx_decl.normal_gl_size, VarToGL(vtx_decl.normal_gl_type), GL_TRUE, vtx_decl.stride, (void *)vtx_decl.normal_offset[1]);
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glVertexAttribPointer(SHADER_NORM2_ATTRIB, vtx_decl.normal_gl_size, VarToGL(vtx_decl.normal_gl_type), GL_TRUE, vtx_decl.stride, (void *)vtx_decl.normal_offset[2]);
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}
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}
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for (int i = 0; i < 2; i++) {
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if (vtx_decl.color_offset[i] != -1) {
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if (i == 0)
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glColorPointer(4, GL_UNSIGNED_BYTE, vtx_decl.stride, (void *)vtx_decl.color_offset[i]);
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else
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glSecondaryColorPointer(4, GL_UNSIGNED_BYTE, vtx_decl.stride, (void *)vtx_decl.color_offset[i]);
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}
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}
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for (int i = 0; i < 8; i++) {
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if (vtx_decl.texcoord_offset[i] != -1) {
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int id = GL_TEXTURE0 + i;
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glClientActiveTexture(id);
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glTexCoordPointer(vtx_decl.texcoord_size[i], VarToGL(vtx_decl.texcoord_gl_type[i]),
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vtx_decl.stride, (void *)vtx_decl.texcoord_offset[i]);
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}
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}
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if (vtx_decl.posmtx_offset != -1) {
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glVertexAttribPointer(SHADER_POSMTX_ATTRIB, 4, GL_UNSIGNED_BYTE, GL_FALSE, vtx_decl.stride, (void *)vtx_decl.posmtx_offset);
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}
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#endif
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}
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