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[client] huge rewrite of renderer API deal with mouse updates

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This commit is contained in:
Geoffrey McRae 2017-12-13 02:22:47 +11:00
parent a157f40690
commit 893bb7e603
6 changed files with 251 additions and 109 deletions
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1
client/Makefile
View File

@ -17,7 +17,6 @@ CFLAGS += -DBUILD_VERSION='"$(shell git describe --always --long --dirty --abbr
OBJS = main.o \
spice/spice.o \
ivshmem/ivshmem.o \
renderers/basic.o \
renderers/opengl.o
BUILD_OBJS = $(foreach obj,$(OBJS),$(BUILD)/$(obj))

12
client/lg-renderer.h
View File

@ -30,13 +30,13 @@ Place, Suite 330, Boston, MA 02111-1307 USA
(x)->deinitialize && \
(x)->is_compatible && \
(x)->on_resize && \
(x)->on_mouse_event && \
(x)->render)
typedef struct LG_RendererParams
{
SDL_Window * window;
TTF_Font * font;
bool vsync;
bool showFPS;
int width;
int height;
@ -64,10 +64,12 @@ LG_RendererRect;
typedef const char * (* LG_RendererGetName )();
typedef bool (* LG_RendererInitialize )(void ** opaque, const LG_RendererParams params, const LG_RendererFormat format);
typedef void (* LG_RendererDeInitialize)(void * opaque);
typedef bool (* LG_RendererIsCompatible)(void * opaque, const LG_RendererFormat format);
typedef void (* LG_RendererDeInitialize )(void * opaque);
typedef bool (* LG_RendererIsCompatible )(void * opaque, const LG_RendererFormat format);
typedef void (* LG_RendererOnResize )(void * opaque, const int width, const int height, const LG_RendererRect destRect);
typedef bool (* LG_RendererRender )(void * opaque, const uint8_t * data, bool resample);
typedef bool (* LG_RendererOnMouseEvent )(void * opaque, const bool visible , const int x, const int y);
typedef bool (* LG_RendererOnFrameEvent )(void * opaque, const uint8_t * data, bool resample);
typedef bool (* LG_RendererRender )(void * opaque);
typedef struct LG_Renderer
{
@ -76,6 +78,8 @@ typedef struct LG_Renderer
LG_RendererDeInitialize deinitialize;
LG_RendererIsCompatible is_compatible;
LG_RendererOnResize on_resize;
LG_RendererOnMouseEvent on_mouse_event;
LG_RendererOnFrameEvent on_frame_event;
LG_RendererRender render;
}
LG_Renderer;

1
client/lg-renderers.h
View File

@ -26,6 +26,5 @@ extern const LG_Renderer LGR_Basic;
const LG_Renderer * LG_Renderers[] =
{
&LGR_OpenGL,
&LGR_Basic,
NULL // end of array sentinal
};

64
client/main.c
View File

@ -49,6 +49,7 @@ struct AppState
TTF_Font *font;
SDL_Point srcSize;
LG_RendererRect dstRect;
SDL_Point cursor;
float scaleX, scaleY;
const LG_Renderer * lgr ;
@ -61,7 +62,6 @@ struct AppState
struct AppParams
{
bool vsync;
bool autoResize;
bool allowResize;
bool keepAspect;
@ -82,7 +82,6 @@ struct AppParams
struct AppState state;
struct AppParams params =
{
.vsync = true,
.autoResize = false,
.allowResize = true,
.keepAspect = true,
@ -145,12 +144,9 @@ int renderThread(void * unused)
{
bool error = false;
struct KVMFRHeader header;
volatile int32_t * updateCount = &state.shm->updateCount - 1;
volatile uint32_t * updateCount = &state.shm->updateCount;
while(state.running)
{
// if the next frame isn't aready available
if (header.updateCount == *updateCount)
{
// poll until we have a new frame, or we time out
while(header.updateCount == *updateCount && state.running) {
@ -160,7 +156,9 @@ int renderThread(void * unused)
};
nanosleep(&s, NULL);
}
}
if (!state.running)
break;
// we must take a copy of the header, both to let the guest advance and to
// prevent the contained arguments being abused to overflow buffers
@ -180,8 +178,10 @@ int renderThread(void * unused)
continue;
}
if(header.flags & KVMFR_HEADER_FLAG_FRAME)
// if we have a frame
if (header.flags & KVMFR_HEADER_FLAG_FRAME)
{
// sainty check of the frame format
if (
header.frame.type >= FRAME_TYPE_MAX ||
header.frame.width == 0 ||
@ -239,7 +239,6 @@ int renderThread(void * unused)
lgrParams.window = state.window;
lgrParams.font = state.font;
lgrParams.showFPS = params.showFPS;
lgrParams.vsync = params.vsync;
lgrParams.width = width;
lgrParams.height = height;
@ -299,16 +298,40 @@ int renderThread(void * unused)
updatePositionInfo();
}
if (!state.lgr->render(
state.lgrData,
(uint8_t *)state.shm + header.frame.dataPos,
params.useMipmap
))
const uint8_t * data = (const uint8_t *)state.shm + header.frame.dataPos;
if (!state.lgr->on_frame_event(state.lgrData, data, params.useMipmap))
{
DEBUG_ERROR("Failed to render the frame");
break;
}
}
// if we have cursor data
if (header.flags & KVMFR_HEADER_FLAG_CURSOR)
{
if (header.cursor.flags & KVMFR_CURSOR_FLAG_POS)
{
state.cursor.x = header.cursor.x;
state.cursor.y = header.cursor.y;
}
if (header.cursor.flags & KVMFR_CURSOR_FLAG_SHAPE)
{
}
if (state.lgr)
{
state.lgr->on_mouse_event(
state.lgrData,
(header.cursor.flags & KVMFR_CURSOR_FLAG_VISIBLE) != 0,
state.cursor.x,
state.cursor.y
);
}
}
if (state.lgr)
state.lgr->render(state.lgrData);
}
if (state.lgr)
@ -484,13 +507,12 @@ int eventThread(void * arg)
x = (float)x * state.scaleX;
y = (float)y * state.scaleY;
}
x -= state.shm->cursor.x;
y -= state.shm->cursor.y;
x -= state.cursor.x;
y -= state.cursor.y;
realignGuest = false;
if (!spice_mouse_motion(x, y))
DEBUG_ERROR("SDL_MOUSEMOTION: failed to send message");
break;
}
@ -612,9 +634,7 @@ int run()
FcPatternDestroy(pat);
}
if (!params.vsync)
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 0);
state.window = SDL_CreateWindow(
"Looking Glass (Client)",
params.center ? SDL_WINDOWPOS_CENTERED : params.x,
@ -837,7 +857,7 @@ void doLicense()
int main(int argc, char * argv[])
{
int c;
while((c = getopt(argc, argv, "hf:sc:p:jMmvkanrdx:y:w:b:l")) != -1)
while((c = getopt(argc, argv, "hf:sc:p:jMmkanrdx:y:w:b:l")) != -1)
switch(c)
{
case '?':
@ -874,10 +894,6 @@ int main(int argc, char * argv[])
params.useMipmap = false;
break;
case 'v':
params.vsync = false;
break;
case 'k':
params.showFPS = true;
break;

2
client/renderers/basic.c
View File

@ -37,7 +37,7 @@ bool lgr_basic_initialize(void ** opaque, const LG_RendererParams params, const
this->renderer = SDL_CreateRenderer(params.window, -1,
SDL_RENDERER_ACCELERATED |
(params.vsync ? SDL_RENDERER_PRESENTVSYNC : 0)
SDL_RENDERER_PRESENTVSYNC
);
if (!this->renderer)

218
client/renderers/opengl.c
View File

@ -16,6 +16,11 @@
#define VBO_BUFFERS 2
#define FPS_TEXTURE (VBO_BUFFERS )
#define MOUSE_TEXTURE (VBO_BUFFERS+1)
#define TEXTURE_COUNT MOUSE_TEXTURE
static PFNGLXGETVIDEOSYNCSGIPROC glXGetVideoSyncSGI = NULL;
static PFNGLXWAITVIDEOSYNCSGIPROC glXWaitVideoSyncSGI = NULL;
@ -25,6 +30,8 @@ struct LGR_OpenGL
bool initialized;
SDL_GLContext glContext;
bool resizeWindow;
bool mouseUpdate;
bool frameUpdate;
LG_RendererFormat format;
GLuint intFormat;
@ -41,7 +48,7 @@ struct LGR_OpenGL
LG_RendererRect destRect;
bool hasTextures;
GLuint vboTex[VBO_BUFFERS + 1]; // extra texture for FPS
GLuint textures[TEXTURE_COUNT];
uint gpuFrameCount;
bool fpsTexture;
@ -49,6 +56,11 @@ struct LGR_OpenGL
uint64_t renderTime;
uint64_t frameCount;
SDL_Rect fpsRect;
bool mouseRepair;
SDL_Point mouseRepairPos;
bool mouseVisible;
SDL_Point mousePos;
};
void lgr_opengl_on_resize(void * opaque, const int width, const int height, const LG_RendererRect destRect);
@ -112,7 +124,7 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
}
}
SDL_GL_SetSwapInterval(params.vsync ? 1 : 0);
SDL_GL_SetSwapInterval(0);
// check if the GPU supports GL_ARB_buffer_storage first
// there is no advantage to this renderer if it is not present.
@ -180,7 +192,7 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
}
// create the textures
glGenTextures(VBO_BUFFERS + (params.showFPS ? 1 : 0), this->vboTex);
glGenTextures(TEXTURE_COUNT, this->textures);
if (lgr_opengl_check_error("glGenTextures"))
return false;
this->hasTextures = true;
@ -188,7 +200,7 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
// bind the textures to the unpack buffers
for (int i = 0; i < VBO_BUFFERS; ++i)
{
glBindTexture(GL_TEXTURE_2D, this->vboTex[i]);
glBindTexture(GL_TEXTURE_2D, this->textures[i]);
if (lgr_opengl_check_error("glBindTexture"))
return false;
@ -207,10 +219,13 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
return false;
}
glBindTexture(GL_TEXTURE_2D, 0);
glEnable(GL_TEXTURE_2D);
glEnable(GL_COLOR_MATERIAL);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
glEnable(GL_SCISSOR_TEST);
this->resizeWindow = true;
this->drawStart = nanotime();
@ -229,7 +244,7 @@ void lgr_opengl_deinitialize(void * opaque)
return;
if (this->hasTextures)
glDeleteTextures(VBO_BUFFERS, this->vboTex);
glDeleteTextures(VBO_BUFFERS, this->textures);
if (this->hasBuffers)
glDeleteBuffers(VBO_BUFFERS, this->vboID);
@ -262,7 +277,24 @@ void lgr_opengl_on_resize(void * opaque, const int width, const int height, cons
this->resizeWindow = true;
}
bool lgr_opengl_render(void * opaque, const uint8_t * data, bool resample)
bool lgr_opengl_on_mouse_event(void * opaque, const bool visible, const int x, const int y)
{
struct LGR_OpenGL * this = (struct LGR_OpenGL *)opaque;
if (!this || !this->initialized)
return false;
if (this->mousePos.x == x && this->mousePos.y == y)
return true;
this->mouseUpdate = true;
this->mouseVisible = visible;
this->mousePos.x = x;
this->mousePos.y = y;
return false;
}
bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resample)
{
struct LGR_OpenGL * this = (struct LGR_OpenGL *)opaque;
if (!this || !this->initialized)
@ -274,34 +306,9 @@ bool lgr_opengl_render(void * opaque, const uint8_t * data, bool resample)
return false;
}
if (this->resizeWindow)
{
// setup the projection matrix
glViewport(0, 0, this->params.width, this->params.height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0, this->params.width, this->params.height, 0);
glMatrixMode(GL_MODELVIEW);
if (++this->texIndex == VBO_BUFFERS)
this->texIndex = 0;
// update the display lists
for(int i = 0; i < VBO_BUFFERS; ++i)
{
glNewList(this->texList + i, GL_COMPILE);
glBindTexture(GL_TEXTURE_2D, this->vboTex[i]);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0.0f, 0.0f); glVertex2i(this->destRect.x , this->destRect.y );
glTexCoord2f(1.0f, 0.0f); glVertex2i(this->destRect.x + this->destRect.w, this->destRect.y );
glTexCoord2f(0.0f, 1.0f); glVertex2i(this->destRect.x , this->destRect.y + this->destRect.h);
glTexCoord2f(1.0f, 1.0f); glVertex2i(this->destRect.x + this->destRect.w, this->destRect.y + this->destRect.h);
glEnd();
glEndList();
}
this->resizeWindow = false;
}
glClear(GL_COLOR_BUFFER_BIT);
if (this->params.showFPS && this->renderTime > 1e9)
{
char str[128];
@ -315,7 +322,7 @@ bool lgr_opengl_render(void * opaque, const uint8_t * data, bool resample)
return false;
}
glBindTexture(GL_TEXTURE_2D , this->vboTex[VBO_BUFFERS]);
glBindTexture(GL_TEXTURE_2D , this->textures[VBO_BUFFERS]);
glPixelStorei(GL_UNPACK_ALIGNMENT , 4 );
glPixelStorei(GL_UNPACK_ROW_LENGTH, textSurface->w );
glTexImage2D(
@ -360,7 +367,7 @@ bool lgr_opengl_render(void * opaque, const uint8_t * data, bool resample)
glEnd();
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, this->vboTex[VBO_BUFFERS]);
glBindTexture(GL_TEXTURE_2D, this->textures[VBO_BUFFERS]);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0.0f , 0.0f); glVertex2i(this->fpsRect.x , this->fpsRect.y );
@ -374,12 +381,11 @@ bool lgr_opengl_render(void * opaque, const uint8_t * data, bool resample)
// copy the buffer to the texture
memcpySSE(this->texPixels[this->texIndex], data, this->texSize);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, this->vboID[this->texIndex]);
glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, this->texSize);
// bind the texture and update it
glBindTexture(GL_TEXTURE_2D , this->vboTex[this->texIndex]);
glBindTexture(GL_TEXTURE_2D , this->textures[this->texIndex]);
glPixelStorei(GL_UNPACK_ALIGNMENT , 4 );
glPixelStorei(GL_UNPACK_ROW_LENGTH , this->format.width );
@ -417,28 +423,144 @@ bool lgr_opengl_render(void * opaque, const uint8_t * data, bool resample)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
// draw the screen
glCallList(this->texList + this->texIndex);
this->frameUpdate = true;
return true;
}
void lgr_opengl_draw_mouse(struct LGR_OpenGL * this)
{
if (this->mouseRepair)
{
glMatrixMode(GL_TEXTURE);
glPushMatrix();
glScalef(1.0f / (float)this->format.width, 1.0f / (float)this->format.height, 1.0f);
glTranslatef(this->mouseRepairPos.x, this->mouseRepairPos.y, 0.0f);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glTranslatef(this->mouseRepairPos.x, this->mouseRepairPos.y, 0.0f);
// repair the damage from the cursor's last position
glBindTexture(GL_TEXTURE_2D, this->textures[this->texIndex]);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0 , 0 ); glVertex2i(0 , 0 );
glTexCoord2f(32, 0 ); glVertex2i(32, 0 );
glTexCoord2f(0 , 32); glVertex2i(0 , 32);
glTexCoord2f(32, 32); glVertex2i(32, 32);
glEnd();
glBindTexture(GL_TEXTURE_2D, 0);
this->mouseRepair = false;
glMatrixMode(GL_TEXTURE);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
if (!this->mouseVisible)
return;
this->mouseRepairPos.x = this->mousePos.x;
this->mouseRepairPos.y = this->mousePos.y;
this->mouseRepair = true;
glPushMatrix();
glTranslatef(this->mouseRepairPos.x, this->mouseRepairPos.y, 0.0f);
glDisable(GL_TEXTURE_2D);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_TRIANGLE_STRIP);
glVertex2i(0 , 0 );
glVertex2i(32, 0 );
glVertex2i(0 , 32);
glVertex2i(32, 32);
glEnd();
glEnable(GL_TEXTURE_2D);
glPopMatrix();
}
bool lgr_opengl_render(void * opaque)
{
struct LGR_OpenGL * this = (struct LGR_OpenGL *)opaque;
if (!this || !this->initialized)
return false;
if (SDL_GL_MakeCurrent(this->params.window, this->glContext) != 0)
{
DEBUG_ERROR("Failed to make the GL context current");
return false;
}
if (this->resizeWindow)
{
// setup the projection matrix
glViewport(0, 0, this->params.width, this->params.height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0, this->params.width, this->params.height, 0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(this->destRect.x, this->destRect.y, 0.0f);
glScalef(
(float)this->destRect.w / (float)this->format.width,
(float)this->destRect.h / (float)this->format.height,
1.0f
);
// update the display lists
for(int i = 0; i < VBO_BUFFERS; ++i)
{
glNewList(this->texList + i, GL_COMPILE);
glBindTexture(GL_TEXTURE_2D, this->textures[i]);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0.0f, 0.0f); glVertex2i(0 , 0 );
glTexCoord2f(1.0f, 0.0f); glVertex2i(this->format.width, 0 );
glTexCoord2f(0.0f, 1.0f); glVertex2i(0 , this->format.height);
glTexCoord2f(1.0f, 1.0f); glVertex2i(this->format.width, this->format.height);
glEnd();
glEndList();
}
// update the scissor rect to prevent drawing outside of the frame
glScissor(0, 0, this->format.width, this->format.height);
this->resizeWindow = false;
glDisable(GL_SCISSOR_TEST);
glClear(GL_COLOR_BUFFER_BIT);
glEnable(GL_SCISSOR_TEST);
}
if (this->frameUpdate)
{
glXWaitVideoSyncSGI(1, 0, &this->gpuFrameCount);
glFinish();
glCallList(this->texList + this->texIndex);
this->mouseRepair = false;
lgr_opengl_draw_mouse(this);
if (this->fpsTexture)
glCallList(this->fpsList);
glFlush();
++this->frameCount;
SDL_GL_SwapWindow(this->params.window);
// wait until the frame has been presented, this is to avoid the video card
// buffering frames, we would rather skip a frame then fall behind the guest
glXWaitVideoSyncSGI(1, 0, &this->gpuFrameCount);
const uint64_t t = nanotime();
this->renderTime += t - this->lastFrameTime;
this->lastFrameTime = t;
}
else
if (this->mouseUpdate)
{
lgr_opengl_draw_mouse(this);
glFlush();
}
if (++this->texIndex == VBO_BUFFERS)
this->texIndex = 0;
this->frameUpdate = false;
this->mouseUpdate = false;
return true;
}
@ -449,5 +571,7 @@ const LG_Renderer LGR_OpenGL =
.deinitialize = lgr_opengl_deinitialize,
.is_compatible = lgr_opengl_is_compatible,
.on_resize = lgr_opengl_on_resize,
.on_mouse_event = lgr_opengl_on_mouse_event,
.on_frame_event = lgr_opengl_on_frame_event,
.render = lgr_opengl_render
};