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[client] improve streaming texture performance

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This commit is contained in:
Geoffrey McRae
2019-06-12 22:36:00 +10:00
parent 6d24dd52d6
commit 607539a2af
6 changed files with 145 additions and 63 deletions
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121
client/renderers/EGL/texture.c
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@@ -32,6 +32,7 @@ struct EGL_Texture
enum EGL_PixelFormat pixFmt;
size_t width, height;
bool streaming;
bool ready;
int textureCount;
GLuint textures[3];
@@ -44,10 +45,12 @@ struct EGL_Texture
bool hasPBO;
GLuint pbo[2];
int pboIndex;
bool needsUpdate;
int pboRIndex;
int pboWIndex;
int pboCount;
size_t pboBufferSize;
void * pboMap[2];
GLsync pboSync[2];
};
bool egl_texture_init(EGL_Texture ** texture)
@@ -81,6 +84,9 @@ void egl_texture_free(EGL_Texture ** texture)
{
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, (*texture)->pbo[i]);
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
if ((*texture)->pboSync[i])
glDeleteSync((*texture)->pboSync[i]);
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glDeleteBuffers(2, (*texture)->pbo);
@@ -98,6 +104,7 @@ bool egl_texture_setup(EGL_Texture * texture, enum EGL_PixelFormat pixFmt, size_
texture->width = width;
texture->height = height;
texture->streaming = streaming;
texture->ready = false;
switch(pixFmt)
{
@@ -210,8 +217,7 @@ bool egl_texture_setup(EGL_Texture * texture, enum EGL_PixelFormat pixFmt, size_
texture->pboBufferSize,
NULL,
GL_MAP_PERSISTENT_BIT |
GL_MAP_WRITE_BIT |
GL_MAP_COHERENT_BIT
GL_MAP_WRITE_BIT
);
texture->pboMap[i] = glMapBufferRange(
@@ -221,7 +227,8 @@ bool egl_texture_setup(EGL_Texture * texture, enum EGL_PixelFormat pixFmt, size_
GL_MAP_PERSISTENT_BIT |
GL_MAP_WRITE_BIT |
GL_MAP_UNSYNCHRONIZED_BIT |
GL_MAP_INVALIDATE_BUFFER_BIT
GL_MAP_INVALIDATE_BUFFER_BIT |
GL_MAP_FLUSH_EXPLICIT_BIT
);
if (!texture->pboMap[i])
@@ -240,22 +247,23 @@ bool egl_texture_update(EGL_Texture * texture, const uint8_t * buffer)
{
if (texture->streaming)
{
if (texture->needsUpdate)
{
DEBUG_ERROR("Previous frame was not consumed");
return false;
}
/* NOTE: DO NOT use any gl commands here as streaming must be thread safe */
if (++texture->pboIndex == 2)
texture->pboIndex = 0;
if (texture->pboCount == 2)
return true;
/* update the GPU buffer */
memcpy(texture->pboMap[texture->pboIndex], buffer, texture->pboBufferSize);
memcpy(texture->pboMap[texture->pboWIndex], buffer, texture->pboBufferSize);
texture->pboSync[texture->pboWIndex] = 0;
texture->needsUpdate = true;
if (++texture->pboWIndex == 2)
texture->pboWIndex = 0;
++texture->pboCount;
}
else
{
/* Non streaming, this is NOT thread safe */
for(int i = 0; i < texture->textureCount; ++i)
{
glBindTexture(GL_TEXTURE_2D, texture->textures[i]);
@@ -268,23 +276,78 @@ bool egl_texture_update(EGL_Texture * texture, const uint8_t * buffer)
return true;
}
void egl_texture_bind(EGL_Texture * texture)
enum EGL_TexStatus egl_texture_process(EGL_Texture * texture)
{
if (texture->streaming && texture->needsUpdate)
{
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture->pbo[texture->pboIndex]);
for(int i = 0; i < texture->textureCount; ++i)
{
glBindTexture(GL_TEXTURE_2D, texture->textures[i]);
glPixelStorei(GL_UNPACK_ROW_LENGTH, texture->planes[i][2]);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, texture->planes[i][0], texture->planes[i][1],
texture->format, texture->dataType, (const void *)texture->offsets[i]);
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
if (!texture->streaming)
return EGL_TEX_STATUS_OK;
texture->needsUpdate = false;
if (texture->pboCount == 0)
return texture->ready ? EGL_TEX_STATUS_OK : EGL_TEX_STATUS_NOTREADY;
/* process any buffers that have not yet been flushed */
int pos = texture->pboRIndex;
for(int i = 0; i < texture->pboCount; ++i)
{
if (texture->pboSync[pos] == 0)
{
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture->pbo[pos]);
glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, texture->pboBufferSize);
texture->pboSync[pos] = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
}
if (++pos == 2)
pos = 0;
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
/* wait for the buffer to be ready */
pos = texture->pboRIndex;
switch(glClientWaitSync(texture->pboSync[pos], GL_SYNC_FLUSH_COMMANDS_BIT, 0))
{
case GL_ALREADY_SIGNALED:
case GL_CONDITION_SATISFIED:
break;
case GL_TIMEOUT_EXPIRED:
return texture->ready ? EGL_TEX_STATUS_OK : EGL_TEX_STATUS_NOTREADY;
case GL_WAIT_FAILED:
glDeleteSync(texture->pboSync[pos]);
DEBUG_ERROR("glClientWaitSync failed");
return EGL_TEX_STATUS_ERROR;
}
/* delete the sync and bind the buffer */
glDeleteSync(texture->pboSync[pos]);
texture->pboSync[pos] = 0;
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture->pbo[pos]);
/* update the textures */
for(int i = 0; i < texture->textureCount; ++i)
{
glBindTexture(GL_TEXTURE_2D, texture->textures[i]);
glPixelStorei(GL_UNPACK_ROW_LENGTH, texture->planes[i][2]);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, texture->planes[i][0], texture->planes[i][1],
texture->format, texture->dataType, (const void *)texture->offsets[i]);
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
/* advance the read index */
if (++texture->pboRIndex == 2)
texture->pboRIndex = 0;
--texture->pboCount;
texture->ready = true;
return EGL_TEX_STATUS_OK;
}
enum EGL_TexStatus egl_texture_bind(EGL_Texture * texture)
{
/* if there are no new buffers ready, then just bind the textures */
if (texture->streaming && !texture->ready)
return EGL_TEX_STATUS_NOTREADY;
for(int i = 0; i < texture->textureCount; ++i)
{
@@ -292,6 +355,8 @@ void egl_texture_bind(EGL_Texture * texture)
glBindTexture(GL_TEXTURE_2D, texture->textures[i]);
glBindSampler(i, texture->samplers[i]);
}
return EGL_TEX_STATUS_OK;
}
int egl_texture_count(EGL_Texture * texture)