Add quakespasm, and OpenGL+SDL-based port of quake1.

ports/sdl/nacl.patch

Index: ports/sdl/nacl.patch
diff --git a/ports/sdl/nacl.patch b/ports/sdl/nacl.patch
index 76345ee20ff9598844650f2f85f64474b8b8ae1e..07ceed86e9f1f30d10fc0b03c0e87c386c9ea754 100644
--- a/ports/sdl/nacl.patch
+++ b/ports/sdl/nacl.patch
@@ -323,10 +323,10 @@ index 50cf179..7b9a0a7 100644
  #endif
 diff --git a/src/audio/nacl/SDL_naclaudio.cc b/src/audio/nacl/SDL_naclaudio.cc
 new file mode 100644
-index 0000000..908a498
+index 0000000..7a02156
 --- /dev/null
 +++ b/src/audio/nacl/SDL_naclaudio.cc
-@@ -0,0 +1,150 @@
+@@ -0,0 +1,140 @@
 +#include "SDL_config.h"
 +#include "SDL_naclaudio.h"
 +
@@ -401,12 +401,10 @@ index 0000000..908a498
 +
 +  _this->hidden->mutex = SDL_CreateMutex();
 +
-+  _this->hidden->opened = false;
-+
 +  // TODO: Move audio device creation to NACLAUD_OpenAudio.
-+  const PPB_Audio_1_1* g_nacl_audio_interface =
++  g_nacl_audio_interface =
 +      (const PPB_Audio_1_1*)g_nacl_get_interface(PPB_AUDIO_INTERFACE_1_1);
-+  const PPB_AudioConfig_1_1* g_nacl_audio_config_interface =
++  g_nacl_audio_config_interface =
 +      (const PPB_AudioConfig_1_1*)g_nacl_get_interface(
 +          PPB_AUDIO_CONFIG_INTERFACE_1_1);
 +
@@ -438,9 +436,6 @@ index 0000000..908a498
 +};
 +
 +static void NACLAUD_CloseAudio(_THIS) {
-+  SDL_LockMutex(_this->hidden->mutex);
-+  _this->hidden->opened = 0;
-+  SDL_UnlockMutex(_this->hidden->mutex);
 +}
 +
 +static void AudioCallback(void* samples, uint32_t buffer_size, PP_TimeDelta,
@@ -448,7 +443,8 @@ index 0000000..908a498
 +  SDL_AudioDevice* _this = reinterpret_cast<SDL_AudioDevice*>(data);
 +
 +  SDL_LockMutex(_this->hidden->mutex);
-+  if (_this->hidden->opened) {
++  /* Only do anything if audio is enabled and not paused */
++  if (_this->enabled && !_this->paused) {
 +    SDL_memset(samples, _this->spec.silence, buffer_size);
 +    SDL_LockMutex(_this->mixer_lock);
 +    (*_this->spec.callback)(_this->spec.userdata, (Uint8*)samples, buffer_size);
@@ -467,22 +463,16 @@ index 0000000..908a498
 +  spec->format = AUDIO_S16LSB;
 +  spec->channels = 2;
 +  spec->samples = _this->hidden->sample_frame_count;
-+
-+  SDL_LockMutex(_this->hidden->mutex);
-+  _this->hidden->opened = 1;
-+  SDL_UnlockMutex(_this->hidden->mutex);
-+
-+  // Do not create an audio thread.
 +  return 1;
 +}
 +
 +}  // extern "C"
 diff --git a/src/audio/nacl/SDL_naclaudio.h b/src/audio/nacl/SDL_naclaudio.h
 new file mode 100644
-index 0000000..b166ab0
+index 0000000..ab52848
 --- /dev/null
 +++ b/src/audio/nacl/SDL_naclaudio.h
-@@ -0,0 +1,30 @@
+@@ -0,0 +1,23 @@
 +#include "SDL_config.h"
 +
 +#ifndef _SDL_naclaudio_h
@@ -500,14 +490,7 @@ index 0000000..b166ab0
 +#define _THIS	SDL_AudioDevice *_this
 +
 +struct SDL_PrivateAudioData {
-+
 +  SDL_mutex* mutex;
-+  // This flag is use to determine when the audio is opened and we can start
-+  // serving audio data instead of silence. This is needed because current
-+  // Pepper2 can only be used from the main thread; Therefore, we start the
-+  // audio thread very early.
-+  bool opened;
-+
 +  int sample_frame_count;
 +  PP_Resource audio;
 +};
@@ -544,7 +527,7 @@ index 5c2d81f..7a757a3 100644
  	if ( CPU_haveCPUID() ) {
 diff --git a/src/main/nacl/pepper_instance.c b/src/main/nacl/pepper_instance.c
 new file mode 100644
-index 0000000..0a3ca79
+index 0000000..997e13a
 --- /dev/null
 +++ b/src/main/nacl/pepper_instance.c
 @@ -0,0 +1,310 @@