mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-12 17:38:19 +00:00
[client] Added GL_ARB_buffer_storage support
This improves client performance by 4x if the video driver supports this extension. OpenGL 4.1 is required for this feature to be used
This commit is contained in:
Geoffrey McRae
parent
9c90a53871
commit
d1ef8d204a
209
client/main.c
209
client/main.c
@ -27,7 +27,9 @@ Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
#include <stdbool.h>
|
||||
#include <assert.h>
|
||||
|
||||
#define GL_GLEXT_PROTOTYPES
|
||||
#include <GL/gl.h>
|
||||
#include <GL/glu.h>
|
||||
|
||||
#include "debug.h"
|
||||
#include "memcpySSE.h"
|
||||
@ -37,10 +39,12 @@ Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
#include "kb.h"
|
||||
|
||||
typedef void (*CompFunc)(uint8_t * dst, const uint8_t * src, const size_t len);
|
||||
typedef void (*DrawFunc)(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src);
|
||||
typedef void (*DrawFunc)(CompFunc compFunc, uint8_t * dst, const uint8_t * src);
|
||||
|
||||
struct KVMGFXState
|
||||
{
|
||||
bool hasBufferStorage;
|
||||
|
||||
bool running;
|
||||
bool started;
|
||||
bool windowChanged;
|
||||
@ -90,66 +94,29 @@ inline bool areFormatsSame(const struct KVMGFXHeader s1, const struct KVMGFXHead
|
||||
(s1.height == s2.height );
|
||||
}
|
||||
|
||||
void drawFunc_ARGB10(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
|
||||
{
|
||||
SDL_UpdateTexture(texture, NULL, src, state.shm->stride * 4);
|
||||
ivshmem_kick_irq(state.shm->guestID, 0);
|
||||
}
|
||||
|
||||
void drawFunc_ARGB(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
|
||||
void drawFunc_ARGB(CompFunc compFunc, uint8_t * dst, const uint8_t * src)
|
||||
{
|
||||
compFunc(dst, src, state.shm->height * state.shm->stride * 4);
|
||||
ivshmem_kick_irq(state.shm->guestID, 0);
|
||||
SDL_UnlockTexture(texture);
|
||||
}
|
||||
|
||||
void drawFunc_RGB(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
|
||||
void drawFunc_RGB(CompFunc compFunc, uint8_t * dst, const uint8_t * src)
|
||||
{
|
||||
compFunc(dst, src, state.shm->height * state.shm->stride * 3);
|
||||
ivshmem_kick_irq(state.shm->guestID, 0);
|
||||
SDL_UnlockTexture(texture);
|
||||
}
|
||||
|
||||
void drawFunc_XOR(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
|
||||
{
|
||||
glEnable(GL_COLOR_LOGIC_OP);
|
||||
glLogicOp(GL_XOR);
|
||||
|
||||
compFunc(dst, src, state.shm->height * state.shm->stride * 3);
|
||||
ivshmem_kick_irq(state.shm->guestID, 0);
|
||||
SDL_UnlockTexture(texture);
|
||||
|
||||
// clear the buffer for the next frame
|
||||
memset(dst, 0, state.shm->height * state.shm->stride * 3);
|
||||
}
|
||||
|
||||
void drawFunc_YUV444P(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
|
||||
{
|
||||
compFunc(dst, src, state.shm->height * state.shm->stride * 3);
|
||||
ivshmem_kick_irq(state.shm->guestID, 0);
|
||||
SDL_UnlockTexture(texture);
|
||||
}
|
||||
|
||||
void drawFunc_YUV420P(CompFunc compFunc, SDL_Texture * texture, uint8_t * dst, const uint8_t * src)
|
||||
{
|
||||
const unsigned int pixels = state.shm->width * state.shm->height;
|
||||
|
||||
SDL_UpdateYUVTexture(texture, NULL,
|
||||
src , state.shm->stride,
|
||||
src + pixels , state.shm->stride / 2,
|
||||
src + pixels + pixels / 4, state.shm->stride / 2
|
||||
);
|
||||
ivshmem_kick_irq(state.shm->guestID, 0);
|
||||
}
|
||||
|
||||
int renderThread(void * unused)
|
||||
{
|
||||
struct KVMGFXHeader format;
|
||||
SDL_Texture *texture = NULL;
|
||||
uint8_t *pixels = (uint8_t*)state.shm;
|
||||
uint8_t *texPixels = NULL;
|
||||
DrawFunc drawFunc = NULL;
|
||||
CompFunc compFunc = NULL;
|
||||
SDL_Texture *texture = NULL;
|
||||
GLuint vboID[2] = {0, 0};
|
||||
GLuint vboTex = 0;
|
||||
unsigned int texIndex = 0;
|
||||
uint8_t *pixels = (uint8_t*)state.shm;
|
||||
uint8_t *texPixels[2] = {NULL, NULL};
|
||||
DrawFunc drawFunc = NULL;
|
||||
CompFunc compFunc = NULL;
|
||||
|
||||
format.version = 1;
|
||||
format.frameType = FRAME_TYPE_INVALID;
|
||||
@ -197,21 +164,36 @@ int renderThread(void * unused)
|
||||
// if the format is invalid or it has changed
|
||||
if (!areFormatsSame(format, *state.shm))
|
||||
{
|
||||
if (texture)
|
||||
if (state.hasBufferStorage)
|
||||
{
|
||||
SDL_DestroyTexture(texture);
|
||||
texture = NULL;
|
||||
if (vboID[0])
|
||||
{
|
||||
if (vboTex)
|
||||
{
|
||||
glDeleteTextures(1, &vboTex);
|
||||
vboTex = 0;
|
||||
}
|
||||
|
||||
glUnmapBuffer(GL_TEXTURE_BUFFER);
|
||||
glDeleteBuffers(2, vboID);
|
||||
memset(vboID, 0, sizeof(vboID));
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (texture)
|
||||
{
|
||||
SDL_DestroyTexture(texture);
|
||||
texture = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
Uint32 sdlFormat;
|
||||
Uint32 sdlFormat;
|
||||
uint8_t bpp;
|
||||
switch(state.shm->frameType)
|
||||
{
|
||||
case FRAME_TYPE_ARGB : sdlFormat = SDL_PIXELFORMAT_ARGB8888 ; drawFunc = drawFunc_ARGB ; break;
|
||||
case FRAME_TYPE_RGB : sdlFormat = SDL_PIXELFORMAT_RGB24 ; drawFunc = drawFunc_RGB ; break;
|
||||
case FRAME_TYPE_XOR : sdlFormat = SDL_PIXELFORMAT_RGB24 ; drawFunc = drawFunc_XOR ; break;
|
||||
case FRAME_TYPE_YUV444P: sdlFormat = SDL_PIXELFORMAT_RGB24 ; drawFunc = drawFunc_YUV444P; break; // incorrect for now
|
||||
case FRAME_TYPE_YUV420P: sdlFormat = SDL_PIXELFORMAT_YV12 ; drawFunc = drawFunc_YUV420P; break;
|
||||
case FRAME_TYPE_ARGB10 : sdlFormat = SDL_PIXELFORMAT_ARGB2101010; drawFunc = drawFunc_ARGB10 ; break;
|
||||
case FRAME_TYPE_ARGB : sdlFormat = SDL_PIXELFORMAT_ARGB8888 ; drawFunc = drawFunc_ARGB ; bpp = 4; break;
|
||||
case FRAME_TYPE_RGB : sdlFormat = SDL_PIXELFORMAT_RGB24 ; drawFunc = drawFunc_RGB ; bpp = 3; break;
|
||||
default:
|
||||
format.frameType = FRAME_TYPE_INVALID;
|
||||
continue;
|
||||
@ -230,25 +212,113 @@ int renderThread(void * unused)
|
||||
SDL_SetWindowSize(state.window, state.shm->width, state.shm->height);
|
||||
SDL_SetWindowPosition(state.window, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
|
||||
|
||||
texture = SDL_CreateTexture(state.renderer, sdlFormat, SDL_TEXTUREACCESS_STREAMING, state.shm->width, state.shm->height);
|
||||
if (state.hasBufferStorage)
|
||||
{
|
||||
// setup two buffers so we don't have to use fences
|
||||
const size_t bufferSize = state.shm->width * state.shm->height * bpp;
|
||||
glGenBuffers(2, vboID);
|
||||
for (int i = 0; i < 2; ++i)
|
||||
{
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, vboID[i]);
|
||||
glBufferStorage (GL_PIXEL_UNPACK_BUFFER, bufferSize, 0, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
|
||||
texPixels[i] = glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, bufferSize, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
|
||||
if (!texPixels[i])
|
||||
{
|
||||
DEBUG_ERROR("Failed to map buffer range, turning off buffer storage");
|
||||
state.hasBufferStorage = false;
|
||||
glDeleteBuffers(2, vboID);
|
||||
memset(vboID, 0, sizeof(vboID));
|
||||
continue;
|
||||
}
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
|
||||
}
|
||||
|
||||
// this doesnt "lock" anything, pre-fetch the pointers for later use
|
||||
int unused;
|
||||
SDL_LockTexture(texture, NULL, (void**)&texPixels, &unused);
|
||||
// create the texture
|
||||
glGenTextures(1, &vboTex);
|
||||
glBindTexture(GL_TEXTURE_2D, vboTex);
|
||||
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_NEAREST);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
||||
glTexImage2D(
|
||||
GL_TEXTURE_2D,
|
||||
0,
|
||||
GL_RGBA8,
|
||||
state.shm->width, state.shm->height,
|
||||
0,
|
||||
GL_BGRA,
|
||||
GL_UNSIGNED_BYTE,
|
||||
(void*)0
|
||||
);
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
texture = SDL_CreateTexture(state.renderer, sdlFormat, SDL_TEXTUREACCESS_STREAMING, state.shm->width, state.shm->height);
|
||||
// this doesnt "lock" anything, pre-fetch the pointers for later use
|
||||
int unused;
|
||||
SDL_LockTexture(texture, NULL, (void**)&texPixels, &unused);
|
||||
}
|
||||
|
||||
memcpy(&format, state.shm, sizeof(format));
|
||||
state.windowChanged = true;
|
||||
}
|
||||
|
||||
glDisable(GL_COLOR_LOGIC_OP);
|
||||
drawFunc(compFunc, texture, texPixels, pixels + state.shm->dataPos);
|
||||
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
|
||||
if (state.hasBufferStorage)
|
||||
{
|
||||
// update the pixels
|
||||
drawFunc(compFunc, texPixels[texIndex ? 0 : 1], pixels + state.shm->dataPos);
|
||||
|
||||
// update the texture
|
||||
glEnable(GL_TEXTURE_2D);
|
||||
glBindTexture(GL_TEXTURE_2D, vboTex);
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, vboID[texIndex ? 0 : 1]);
|
||||
glTexSubImage2D(
|
||||
GL_TEXTURE_2D,
|
||||
0,
|
||||
0, 0,
|
||||
state.shm->width, state.shm->height,
|
||||
GL_BGRA,
|
||||
GL_UNSIGNED_BYTE,
|
||||
(void*)0
|
||||
);
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
|
||||
|
||||
// draw the screen
|
||||
glBegin(GL_TRIANGLE_STRIP);
|
||||
glTexCoord2f(0.0f, 0.0f); glVertex2f(0.0f , 0.0f );
|
||||
glTexCoord2f(1.0f, 0.0f); glVertex2f(state.shm->width, 0.0f );
|
||||
glTexCoord2f(0.0f, 1.0f); glVertex2f(0.0f , state.shm->height);
|
||||
glTexCoord2f(1.0f, 1.0f); glVertex2f(state.shm->width, state.shm->height);
|
||||
glEnd();
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
glDisable(GL_TEXTURE_2D);
|
||||
|
||||
// update our texture index
|
||||
if (++texIndex == 2)
|
||||
texIndex = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
drawFunc(compFunc, texPixels[0], pixels + state.shm->dataPos);
|
||||
SDL_UnlockTexture(texture);
|
||||
SDL_RenderCopy(state.renderer, texture, NULL, NULL);
|
||||
}
|
||||
|
||||
SDL_RenderPresent(state.renderer);
|
||||
|
||||
state.started = true;
|
||||
}
|
||||
|
||||
SDL_DestroyTexture(texture);
|
||||
if (state.hasBufferStorage)
|
||||
{
|
||||
glDeleteTextures(1, &vboTex );
|
||||
glUnmapBuffer (GL_TEXTURE_BUFFER);
|
||||
glDeleteBuffers (2, vboID );
|
||||
}
|
||||
else
|
||||
SDL_DestroyTexture(texture);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -476,6 +546,13 @@ int main(int argc, char * argv[])
|
||||
state.renderer = SDL_CreateRenderer(state.window, -1,
|
||||
SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
|
||||
|
||||
const GLubyte * extensions = glGetString(GL_EXTENSIONS);
|
||||
if (gluCheckExtension((const GLubyte *)"GL_ARB_buffer_storage", extensions))
|
||||
{
|
||||
DEBUG_INFO("Using GL_ARB_buffer_storage");
|
||||
state.hasBufferStorage = true;
|
||||
}
|
||||
|
||||
if (!state.renderer)
|
||||
{
|
||||
DEBUG_ERROR("failed to create window");
|
||||
|
||||
Loading…
Reference in New Issue
Block a user