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[client] another try at better screen sync

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This commit is contained in:
Geoffrey McRae 2017-12-14 06:54:53 +11:00
parent 81f4a7fade
commit a7180a5609
1 changed files with 105 additions and 103 deletions
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158
client/renderers/opengl.c
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@ -14,11 +14,12 @@
#include "memcpySSE.h"
#include "utils.h"
#define VBO_BUFFERS 2
#define BUFFER_COUNT 2
#define FPS_TEXTURE (VBO_BUFFERS )
#define MOUSE_TEXTURE (VBO_BUFFERS+1)
#define TEXTURE_COUNT (VBO_BUFFERS+2)
#define FRAME_TEXTURE 0
#define FPS_TEXTURE 1
#define MOUSE_TEXTURE 2
#define TEXTURE_COUNT 3
static PFNGLXGETVIDEOSYNCSGIPROC glXGetVideoSyncSGI = NULL;
static PFNGLXWAITVIDEOSYNCSGIPROC glXWaitVideoSyncSGI = NULL;
@ -38,13 +39,14 @@ struct LGR_OpenGL
uint64_t drawStart;
bool hasBuffers;
GLuint vboID[VBO_BUFFERS];
uint8_t * texPixels[VBO_BUFFERS];
GLuint vboID[1];
uint8_t * texPixels[BUFFER_COUNT];
int texIndex;
int texList;
int fpsList;
int mouseList;
LG_RendererRect destRect;
bool mipmap;
bool hasTextures;
GLuint textures[TEXTURE_COUNT];
@ -59,8 +61,6 @@ struct LGR_OpenGL
bool mouseUpdate;
uint64_t lastMouseDraw;
LG_RendererCursor mouseType;
bool mouseRepair;
SDL_Rect mouseRepairPos;
bool mouseVisible;
SDL_Rect mousePos;
};
@ -124,7 +124,7 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
}
}
SDL_GL_SetSwapInterval(0);
SDL_GL_SetSwapInterval(1);
// check if the GPU supports GL_ARB_buffer_storage first
// there is no advantage to this renderer if it is not present.
@ -157,40 +157,45 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
this->texSize = format.height * format.pitch;
// generate lists for drawing
this->texList = glGenLists(2);
this->texList = glGenLists(BUFFER_COUNT);
this->fpsList = glGenLists(1);
this->mouseList = glGenLists(1);
// generate the pixel unpack buffers
glGenBuffers(VBO_BUFFERS, this->vboID);
glGenBuffers(1, this->vboID);
if (lgr_opengl_check_error("glGenBuffers"))
return false;
this->hasBuffers = true;
// persistant bind the buffers
for (int i = 0; i < VBO_BUFFERS; ++i)
{
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, this->vboID[i]);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, this->vboID[0]);
if (lgr_opengl_check_error("glBindBuffer"))
return false;
glBufferStorage(GL_PIXEL_UNPACK_BUFFER, this->texSize, 0, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
glBufferStorage(
GL_PIXEL_UNPACK_BUFFER,
this->texSize * BUFFER_COUNT,
NULL,
GL_MAP_WRITE_BIT |
GL_MAP_PERSISTENT_BIT |
GL_MAP_COHERENT_BIT
);
if (lgr_opengl_check_error("glBufferStorage"))
return false;
this->texPixels[i] = glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, this->texSize,
GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_FLUSH_EXPLICIT_BIT);
this->texPixels[0] = glMapBufferRange(
GL_PIXEL_UNPACK_BUFFER,
0,
this->texSize * BUFFER_COUNT,
GL_MAP_WRITE_BIT |
GL_MAP_PERSISTENT_BIT |
GL_MAP_COHERENT_BIT
);
if (lgr_opengl_check_error("glMapBufferRange"))
return false;
if (!this->texPixels[i])
{
DEBUG_ERROR("Failed to map the buffer range");
return false;
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
for(int i = 1; i < BUFFER_COUNT; ++i)
this->texPixels[i] = this->texPixels[i-1] + this->texSize;
// create the textures
glGenTextures(TEXTURE_COUNT, this->textures);
@ -198,10 +203,8 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
return false;
this->hasTextures = true;
// bind the textures to the unpack buffers
for (int i = 0; i < VBO_BUFFERS; ++i)
{
glBindTexture(GL_TEXTURE_2D, this->textures[i]);
// create the frame texture
glBindTexture(GL_TEXTURE_2D, this->textures[FRAME_TEXTURE]);
if (lgr_opengl_check_error("glBindTexture"))
return false;
@ -209,7 +212,8 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
GL_TEXTURE_2D,
0,
this->intFormat,
format.width, format.height,
format.width,
format.height * BUFFER_COUNT,
0,
this->vboFormat,
GL_UNSIGNED_BYTE,
@ -218,23 +222,32 @@ bool lgr_opengl_initialize(void ** opaque, const LG_RendererParams params, const
if (lgr_opengl_check_error("glTexImage2D"))
return false;
// configure the texture
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
for (int i = 0; i < BUFFER_COUNT; ++i)
{
const float ts = (1.0f / BUFFER_COUNT) * i;
const float te = (1.0f / BUFFER_COUNT) + ts;
// create the display lists
glNewList(this->texList + i, GL_COMPILE);
glBindTexture(GL_TEXTURE_2D, this->textures[i]);
glBindTexture(GL_TEXTURE_2D, this->textures[FRAME_TEXTURE]);
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(format.width, 0 );
glTexCoord2f(0.0f, 1.0f); glVertex2i(0 , format.height);
glTexCoord2f(1.0f, 1.0f); glVertex2i(format.width, format.height);
glTexCoord2f(0.0f, ts); glVertex2i(0 , 0 );
glTexCoord2f(1.0f, ts); glVertex2i(format.width, 0 );
glTexCoord2f(0.0f, te); glVertex2i(0 , format.height);
glTexCoord2f(1.0f, te); glVertex2i(format.width, format.height);
glEnd();
glEndList();
if (lgr_opengl_check_error("glTexImage2D"))
return false;
}
glBindTexture(GL_TEXTURE_2D, 0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glEnable(GL_TEXTURE_2D);
glEnable(GL_COLOR_MATERIAL);
@ -259,10 +272,10 @@ void lgr_opengl_deinitialize(void * opaque)
return;
if (this->hasTextures)
glDeleteTextures(VBO_BUFFERS, this->textures);
glDeleteTextures(TEXTURE_COUNT, this->textures);
if (this->hasBuffers)
glDeleteBuffers(VBO_BUFFERS, this->vboID);
glDeleteBuffers(1, this->vboID);
if (this->glContext)
SDL_GL_DeleteContext(this->glContext);
@ -440,7 +453,7 @@ bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resampl
return false;
int texIndex = this->texIndex + 1;
if (texIndex == VBO_BUFFERS)
if (texIndex == BUFFER_COUNT)
texIndex = 0;
if (this->params.showFPS && this->renderTime > 1e9)
@ -456,7 +469,7 @@ bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resampl
return false;
}
glBindTexture(GL_TEXTURE_2D , this->textures[VBO_BUFFERS]);
glBindTexture(GL_TEXTURE_2D , this->textures[FPS_TEXTURE]);
glPixelStorei(GL_UNPACK_ALIGNMENT , 4 );
glPixelStorei(GL_UNPACK_ROW_LENGTH, textSurface->w );
glTexImage2D(
@ -501,7 +514,7 @@ bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resampl
glEnd();
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, this->textures[VBO_BUFFERS]);
glBindTexture(GL_TEXTURE_2D, this->textures[FPS_TEXTURE]);
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 );
@ -515,11 +528,10 @@ bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resampl
// copy the buffer to the texture
memcpySSE(this->texPixels[texIndex], data, this->texSize);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, this->vboID[texIndex]);
glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, this->texSize);
// bind the texture and update it
glBindTexture(GL_TEXTURE_2D , this->textures[texIndex]);
glBindTexture(GL_TEXTURE_2D , this->textures[FRAME_TEXTURE]);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, this->vboID[0] );
glPixelStorei(GL_UNPACK_ALIGNMENT , 4 );
glPixelStorei(GL_UNPACK_ROW_LENGTH , this->format.width );
@ -527,35 +539,34 @@ bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data, bool resampl
glTexSubImage2D(
GL_TEXTURE_2D,
0,
0, 0,
0,
texIndex * this->format.height,
this->format.width ,
this->format.height,
this->vboFormat,
GL_UNSIGNED_BYTE,
(void*)0
(void*)(texIndex * this->texSize)
);
lgr_opengl_check_error("glTexSubImage2D");
// unbind the buffer
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
const bool mipmap = resample && (
(this->format.width > this->destRect.w) ||
(this->format.height > this->destRect.h));
// unbind the buffer
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
if (this->mipmap != mipmap)
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
mipmap ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
this->mipmap = mipmap;
}
// configure the texture
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
if (mipmap)
{
glGenerateMipmap(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
}
else
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
glBindTexture(GL_TEXTURE_2D, 0);
this->frameUpdate = true;
this->texIndex = texIndex;
@ -567,11 +578,8 @@ inline void lgr_opengl_draw_mouse(struct LGR_OpenGL * this)
if (!this->mouseVisible)
return;
memcpy(&this->mouseRepairPos, &this->mousePos, sizeof(SDL_Rect));
this->mouseRepair = true;
glPushMatrix();
glTranslatef(this->mouseRepairPos.x, this->mouseRepairPos.y, 0.0f);
glTranslatef(this->mousePos.x, this->mousePos.y, 0.0f);
glCallList(this->mouseList);
glPopMatrix();
}
@ -613,6 +621,7 @@ bool lgr_opengl_render(void * opaque)
glEnable(GL_SCISSOR_TEST);
}
if (!this->frameUpdate)
{
if (!this->mouseUpdate)
@ -623,29 +632,22 @@ bool lgr_opengl_render(void * opaque)
if (delta < 1e7)
return true;
glDrawBuffer(GL_FRONT);
glCallList(this->texList + this->texIndex);
lgr_opengl_draw_mouse(this);
glFinish();
glFlush();
this->mouseUpdate = false;
this->lastMouseDraw = nanotime();
return true;
}
else
{
glDrawBuffer(GL_BACK);
glCallList(this->texList + this->texIndex);
lgr_opengl_draw_mouse(this);
if (this->fpsTexture)
glCallList(this->fpsList);
glDrawBuffer(GL_FRONT);
unsigned int count;
glXGetVideoSyncSGI(&count);
if (count == this->gpuFrameCount)
glXWaitVideoSyncSGI(1, 0, &count);
SDL_GL_SwapWindow(this->params.window);
glXGetVideoSyncSGI(&this->gpuFrameCount);
}
++this->frameCount;
const uint64_t t = nanotime();