<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>MDP - mdp_cpuflags.h: CPU Flags</title> <meta http-equiv='Content-Type' content='text/html; charset=utf-8'> <link rel='stylesheet' href='mdp.css' type='text/css'> </head> <body> <h1 class='doc_title'>MDP - mdp_cpuflags.h: CPU Flags</h1> <h4 class='doc_set'>Mega Drive Plugins v1.0.0<br>Revision 0</h4> <div class='navbar'> <span class='navitem'><a href="index.html">Index</a></span> <span class='navarrow'>→</span> <span class='navitem'><a href="mdp_cpuflags_h.html">mdp_cpuflags.h</a></span> </div> <p> The MDP plugin interface provides a method to determine what CPU functionality is available on the host system, such as extra instruction sets. The system's CPU flags are provided to plugins in three ways: </p> <p> <ol> <li> <span class='struct'><a href="mdp_h.html">mdp_t</a></span>. <span class='type'>cpuFlagsRequired</span> is compared against the system's CPU flags. If the system is missing any specified CPU flags, the plugin is not loaded. </li> <li> CPU flags are passed to renderer functions in the <span class='struct'><a href="mdp_render_h.html">mdp_render_info_t</a></span> struct. </li> <li> CPU flags can be obtained using <span class='struct'><a href="mdp_host_h.html">host_srv</a></span>. <span class='function'>val_get(<span class='macro'>MDP_VAL_CPU_FLAGS</span>)</span>. </li> </ol> </p> <p> CPU flags are architecture-dependent, and may be reused for different meanings on different architectures. </p> <p>CPU flags for i386 / x86_64:</p> <table> <tr> <th>CPU Flag</th> <th>Description</th> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_MMX</td> <td>CPU supports the MMX instruction set.</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_MMXEXT</td> <td> CPU supports the extended MMX instruction set.<br> (Note: This is only a separate flag on AMD CPUs;<br> on Intel CPUs, this flag is implied by <span class='macro'>MDP_CPUFLAG_X86_SSE</span>.) </td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_3DNOW</td> <td>CPU supports the 3DNOW! instruction set. (AMD only)</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_3DNOWEXT</td> <td>CPU supports the extended 3DNOW! instruction set. (AMD only)</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_SSE</td> <td>CPU supports the SSE instruction set.</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_SSE2</td> <td>CPU supports the SSE2 instruction set.</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_SSE3</td> <td>CPU supports the SSE3 instruction set.</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_SSSE3</td> <td>CPU supports the SSSE3 instruction set.</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_SSE41</td> <td>CPU supports the SSE4.1 instruction set.</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_SSE42</td> <td>CPU supports the SSE4.1 instruction set.</td> </tr> <tr> <td class='macro'>MDP_CPUFLAG_X86_SSE4A</td> <td>CPU supports the SSE4a instruction set. (AMD only)</td> </tr> </table> <p>CPU flags for additional architectures will be added in future versions of MDP.</p> </body> </html>
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