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Move code of getGPUMemoryInformation to Rendering manager

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This commit is contained in:
Bruno Herbelin
2022-04-18 14:01:21 +02:00
parent 4dd8ceb245
commit e512eab1e8
5 changed files with 71 additions and 67 deletions
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2
CloneSource.cpp
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@@ -161,7 +161,7 @@ void CloneSource::update(float dt)
if ( images_.empty() || now - elapsed_.front() < delay_ + (dt * 0.001) )
{
// create a FBO if none can be reused (from above) and test for RAM in GPU
if (garbage_image_ == nullptr && ( images_.empty() || FrameBuffer::shouldHaveEnoughMemory(origin_->frame()->resolution(), origin_->frame()->use_alpha()) ) )
if (garbage_image_ == nullptr && ( images_.empty() || Rendering::shouldHaveEnoughMemory(origin_->frame()->resolution(), origin_->frame()->use_alpha()) ) )
garbage_image_ = new FrameBuffer( origin_->frame()->resolution(), origin_->frame()->use_alpha() );
// image available
if (garbage_image_ != nullptr) {

64
FrameBuffer.cpp
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@@ -35,10 +35,6 @@
#define FRAMEBUFFER_DEBUG
#endif
#define GL_GPU_MEM_INFO_TOTAL_AVAILABLE_MEM_NVX 0x9048
#define GL_GPU_MEM_INFO_CURRENT_AVAILABLE_MEM_NVX 0x9049
#define GL_TEXTURE_FREE_MEMORY_ATI 0x87FC
const char* FrameBuffer::aspect_ratio_name[5] = { "4:3", "3:2", "16:10", "16:9", "21:9" };
glm::vec2 FrameBuffer::aspect_ratio_size[5] = { glm::vec2(4.f,3.f), glm::vec2(3.f,2.f), glm::vec2(16.f,10.f), glm::vec2(16.f,9.f) , glm::vec2(21.f,9.f) };
const char* FrameBuffer::resolution_name[5] = { "720", "1080", "1200", "1440", "2160" };
@@ -363,7 +359,7 @@ void FrameBuffer::checkFramebufferStatus()
if ( framebufferMemoryInKB > 8000 ) {
// Obtain RAM usage in GPU (if possible)
glm::ivec2 RAM = getGPUMemoryInformation();
glm::ivec2 RAM = Rendering::getGPUMemoryInformation();
// bad case: not enough RAM, we should warn the user
if ( RAM.x < framebufferMemoryInKB * 3 ) {
@@ -388,64 +384,6 @@ void FrameBuffer::checkFramebufferStatus()
}
// RAM usage in GPU
// returns { CurAvailMemoryInKB, TotalMemoryInKB }
// MAX values means the info in not available
glm::ivec2 FrameBuffer::getGPUMemoryInformation()
{
glm::ivec2 ret(INT_MAX, INT_MAX);
// Detect method to get info
static int meminfomode = -1;
if (meminfomode<0) {
// initialized
meminfomode = 0;
GLint numExtensions = 0;
glGetIntegerv( GL_NUM_EXTENSIONS, &numExtensions );
for (int i = 0; i < numExtensions; ++i){
const GLubyte *ccc = glGetStringi(GL_EXTENSIONS, i);
// NVIDIA extension available
if ( strcmp( (const char*)ccc, "GL_NVX_gpu_memory_info") == 0 ){
meminfomode = 1;
break;
}
// ATI extension available
else if ( strcmp( (const char*)ccc, "GL_ATI_meminfo") == 0 ){
meminfomode = 2;
break;
}
}
}
// NVIDIA
if (meminfomode == 1) {
static GLint nTotalMemoryInKB = -1;
if (nTotalMemoryInKB<0)
glGetIntegerv( GL_GPU_MEM_INFO_TOTAL_AVAILABLE_MEM_NVX, &nTotalMemoryInKB );
ret.y = nTotalMemoryInKB;
glGetIntegerv( GL_GPU_MEM_INFO_CURRENT_AVAILABLE_MEM_NVX, &ret.x );
}
// ATI
else if (meminfomode == 2) {
glGetIntegerv( GL_TEXTURE_FREE_MEMORY_ATI, &ret.x );
}
return ret;
}
bool FrameBuffer::shouldHaveEnoughMemory(glm::vec3 resolution, bool useAlpha, bool multiSampling)
{
glm::ivec2 RAM = getGPUMemoryInformation();
// approximation of RAM needed for such FBO
GLint framebufferMemoryInKB = ( resolution.x * resolution.x * (useAlpha?4:3) * (multiSampling?2:1) ) / 1024;
return ( RAM.x > framebufferMemoryInKB * 3 );
}
glm::mat4 FrameBuffer::projection() const
{

3
FrameBuffer.h
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@@ -44,9 +44,6 @@ public:
static float resolution_height[5];
static glm::vec3 getResolutionFromParameters(int ar, int h);
static glm::ivec2 getParametersFromResolution(glm::vec3 res);
// memory management
static glm::ivec2 getGPUMemoryInformation();
static bool shouldHaveEnoughMemory(glm::vec3 resolution, bool useAlpha = false, bool multiSampling = false);
FrameBuffer(glm::vec3 resolution, bool useAlpha = false, bool multiSampling = false);
FrameBuffer(uint width, uint height, bool useAlpha = false, bool multiSampling = false);

65
RenderingManager.cpp
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@@ -467,6 +467,71 @@ void Rendering::requestScreenshot()
}
// RAM usage in GPU
// returns { CurAvailMemoryInKB, TotalMemoryInKB }
// MAX values means the info in not available
#define GL_GPU_MEM_INFO_TOTAL_AVAILABLE_MEM_NVX 0x9048
#define GL_GPU_MEM_INFO_CURRENT_AVAILABLE_MEM_NVX 0x9049
#define GL_TEXTURE_FREE_MEMORY_ATI 0x87FC
glm::ivec2 Rendering::getGPUMemoryInformation()
{
glm::ivec2 ret(INT_MAX, INT_MAX);
// Detect method to get info
static int meminfomode = -1;
if (meminfomode<0) {
// initialized
meminfomode = 0;
GLint numExtensions = 0;
glGetIntegerv( GL_NUM_EXTENSIONS, &numExtensions );
for (int i = 0; i < numExtensions; ++i){
const GLubyte *ccc = glGetStringi(GL_EXTENSIONS, i);
// NVIDIA extension available
if ( strcmp( (const char*)ccc, "GL_NVX_gpu_memory_info") == 0 ){
meminfomode = 1;
break;
}
// ATI extension available
else if ( strcmp( (const char*)ccc, "GL_ATI_meminfo") == 0 ){
meminfomode = 2;
break;
}
}
}
// NVIDIA
if (meminfomode == 1) {
static GLint nTotalMemoryInKB = -1;
if (nTotalMemoryInKB<0)
glGetIntegerv( GL_GPU_MEM_INFO_TOTAL_AVAILABLE_MEM_NVX, &nTotalMemoryInKB );
ret.y = nTotalMemoryInKB;
glGetIntegerv( GL_GPU_MEM_INFO_CURRENT_AVAILABLE_MEM_NVX, &ret.x );
}
// ATI
else if (meminfomode == 2) {
glGetIntegerv( GL_TEXTURE_FREE_MEMORY_ATI, &ret.x );
}
return ret;
}
bool Rendering::shouldHaveEnoughMemory(glm::vec3 resolution, bool useAlpha, bool multiSampling)
{
glm::ivec2 RAM = getGPUMemoryInformation();
// approximation of RAM needed for such FBO
GLint framebufferMemoryInKB = ( resolution.x * resolution.x * (useAlpha?4:3) * (multiSampling?2:1) ) / 1024;
return ( RAM.x > framebufferMemoryInKB * 3 );
}
// custom surface with a new VAO
class WindowSurface : public Primitive {

4
RenderingManager.h
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@@ -147,6 +147,10 @@ public:
// project from scene coordinate to window
glm::vec2 project(glm::vec3 scene_coordinate, glm::mat4 modelview = glm::mat4(1.f), bool to_framebuffer = true);
// memory management
static glm::ivec2 getGPUMemoryInformation();
static bool shouldHaveEnoughMemory(glm::vec3 resolution, bool useAlpha = false, bool multiSampling = false);
#ifdef USE_GST_OPENGL_SYNC_HANDLER
// for opengl pipeline in gstreamer
static void LinkPipeline( GstPipeline *pipeline );