tri11paragon
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gpu-particles
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funny code

main
Brett 2025-06-09 22:07:21 -04:00
parent 03136cdd9e
commit c002f3fcaa
4 changed files with 70 additions and 23 deletions
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5
.idea/vcs.xml
View File

@ -4,23 +4,18 @@
<mapping directory="" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-debug-addrsan/_deps/freetype-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-debug-addrsan/_deps/freetype-src/subprojects/dlg" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-debug-addrsan/_deps/glfw3-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-debug-addrsan/_deps/imgui-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-debug/_deps/freetype-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-debug/_deps/freetype-src/subprojects/dlg" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-debug/_deps/glfw3-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-debug/_deps/imgui-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-release/_deps/freetype-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-release/_deps/freetype-src/subprojects/dlg" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-release/_deps/glfw3-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-release/_deps/imgui-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-relwithdebinfo-addrsan/_deps/freetype-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-relwithdebinfo-addrsan/_deps/freetype-src/subprojects/dlg" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-relwithdebinfo-addrsan/_deps/glfw3-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-relwithdebinfo-addrsan/_deps/imgui-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-relwithdebinfo/_deps/freetype-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-relwithdebinfo/_deps/freetype-src/subprojects/dlg" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-relwithdebinfo/_deps/glfw3-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/cmake-build-relwithdebinfo/_deps/imgui-src" vcs="Git" />
<mapping directory="$PROJECT_DIR$/lib/blt-with-graphics" vcs="Git" />
<mapping directory="$PROJECT_DIR$/lib/blt-with-graphics/libraries/BLT" vcs="Git" />

2
CMakeLists.txt
View File

@ -1,5 +1,5 @@
cmake_minimum_required(VERSION 3.25)
project(gpu-particles VERSION 0.0.10)
project(gpu-particles VERSION 0.0.11)
option(ENABLE_ADDRSAN "Enable the address sanitizer" OFF)
option(ENABLE_UBSAN "Enable the ub sanitizer" OFF)

67
include/vbo.h
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@ -30,6 +30,10 @@ namespace blt::gfx
namespace detail
{
/**
* So long as this class is called from vbo.bind(), it is always valid to chain any internal functions.
* This system is designed to be foolproof, so don't get too clever
*/
class vbo_context_t
{
public:
@ -47,27 +51,45 @@ namespace blt::gfx
vbo_context_t& unbind();
vbo_context_t& reserve(GLsizeiptr size, GLint mem_type);
/**
* Reserves a chunk of GPU memory for future use
*/
vbo_context_t& resize(GLsizeiptr size, GLint mem_type);
vbo_context_t& reserve(const size_t size, const GLint mem_type)
/**
* Reserves a chunk of GPU memory for future use
*/
vbo_context_t& resize(const size_t size, const GLint mem_type)
{
return reserve(static_cast<GLsizeiptr>(size), mem_type);
return resize(static_cast<GLsizeiptr>(size), mem_type);
}
vbo_context_t& upload(size_t size, void* ptr, GLint mem_type);
/**
* Uploads a chunk of memory to the GPU. If the existing VBO has enough space, the memory will be reused.
*/
vbo_context_t& upload(size_t size, const void* ptr, GLint mem_type);
template <typename T>
/**
* Uploads a chunk of memory to the GPU. If the existing VBO has enough space, the memory will be reused.
*/
template <typename T, std::enable_if_t<!std::is_same_v<T, void>, bool> = true>
vbo_context_t& upload(const size_t size, T* ptr, const GLint mem_type)
{
return upload(size, static_cast<void*>(ptr), mem_type);
}
/**
* Updates an internal segment of the VBO. This function will never reallocate.
*/
vbo_context_t& update(size_t offset, size_t size, const void* ptr);
template <typename T>
vbo_context_t& update(size_t offset, const size_t size, T* ptr)
/**
* Updates an internal segment of the VBO. This function will never reallocate.
*/
template <typename T, std::enable_if_t<!std::is_same_v<T, void>, bool> = true>
vbo_context_t& update(const size_t offset, const size_t size, T* ptr)
{
return upload(offset, size, static_cast<void*>(ptr));
return update(offset, size, static_cast<void*>(ptr));
}
private:
@ -102,12 +124,26 @@ namespace blt::gfx
return *this;
}
/**
* Changes the internal buffer type of this VBO
*/
GLuint change_type(const GLuint type)
{
return std::exchange(this->buffer_type, type);
}
[[nodiscard]] auto bind();
/**
* This function binds the VBO to the current buffer_type slot and returns an object which allows you to modify or use this VBO.
* This allows you to use the VBO without worrying about whether an operation is valid in this context.
* As so long as you use this object in line, or without binding other VBOs to the same buffer_type
* (violating the contracts this function attempts to create) then all functions on the associated object are valid to call.
*/
[[nodiscard]] detail::vbo_context_t bind();
[[nodiscard]] auto native_handle() const
{
return vboID;
}
~unique_vbo_t()
{
@ -139,8 +175,17 @@ namespace blt::gfx
class unique_ubo_t : public unique_vbo_t
{
public:
unique_ubo_t(): unique_vbo_t{GL_UNIFORM_BUFFER}
{}
explicit unique_ubo_t(const i32 location): unique_vbo_t{GL_UNIFORM_BUFFER}
{set_location(location);}
void set_location(i32 new_location);
[[nodiscard]] i32 get_location() const
{
return location;
}
private:
i32 location = 0;
};
}

19
src/vbo.cpp
View File

@ -26,17 +26,17 @@ namespace blt::gfx
vbo_context_t& vbo_context_t::bind()
{
BLT_CONTRACT(vbo.vboID, "Expected VBO to have an assoicated VBO ID!");
glBindBuffer(vbo.type, *vbo.vboID);
glBindBuffer(vbo.buffer_type, *vbo.vboID);
return *this;
}
vbo_context_t& vbo_context_t::unbind()
{
glBindBuffer(vbo.type, 0);
glBindBuffer(vbo.buffer_type, 0);
return *this;
}
vbo_context_t& vbo_context_t::reserve(const GLsizeiptr size, const GLint mem_type)
vbo_context_t& vbo_context_t::resize(const GLsizeiptr size, const GLint mem_type)
{
vbo.size = size;
vbo.memory_type = mem_type;
@ -44,9 +44,9 @@ namespace blt::gfx
return *this;
}
vbo_context_t& vbo_context_t::upload(const size_t size, void* ptr, const GLint mem_type)
vbo_context_t& vbo_context_t::upload(const size_t size, const void* ptr, const GLint mem_type)
{
if (mem_type != vbo.memory_type || vbo.size < size)
if (mem_type != vbo.memory_type || static_cast<size_t>(vbo.size) < size)
{
vbo.size = static_cast<GLsizeiptr>(size);
vbo.memory_type = mem_type;
@ -65,9 +65,16 @@ namespace blt::gfx
}
}
auto unique_vbo_t::bind()
detail::vbo_context_t unique_vbo_t::bind()
{
BLT_CONTRACT(glfwGetCurrentContext() != nullptr, "Expected active OpenGL context!");
return detail::vbo_context_t{*this};
}
void unique_ubo_t::set_location(const i32 new_location)
{
BLT_CONTRACT(native_handle().has_value(), "Expected UBO to have an associated buffer! (You are probably calling this on a moved-from value)");
location = new_location;
glBindBufferBase(GL_UNIFORM_BUFFER, location, *native_handle());
}
}