Move some classes around for PushBuffer

Author: VReaperV

src/engine/renderer/GLMemory.h

@@ -36,7 +36,252 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef GLMEMORY_H
 #define GLMEMORY_H
 
-#include "gl_shader.h"
+#include "common/Common.h"
+#include "GL/glew.h"
+#include "tr_local.h"
+#include "BufferBind.h"
+
+class GLBuffer {
+	public:
+	friend class GLVAO;
+
+	std::string name;
+	const GLuint64 SYNC_TIMEOUT = 10000000000; // 10 seconds
+
+	GLuint id;
+
+	GLBuffer( const char* newName, const GLuint newBindingPoint, const GLbitfield newFlags, const GLbitfield newMapFlags ) :
+		name( newName ),
+		internalTarget( 0 ),
+		internalBindingPoint( newBindingPoint ),
+		flags( newFlags ),
+		mapFlags( newMapFlags ) {
+	}
+
+	GLBuffer( const char* newName, const GLenum newTarget, const GLuint newBindingPoint,
+		const GLbitfield newFlags, const GLbitfield newMapFlags ) :
+		name( newName ),
+		internalTarget( newTarget ),
+		internalBindingPoint( newBindingPoint ),
+		flags( newFlags ),
+		mapFlags( newMapFlags ) {
+	}
+
+	void BindBufferBase( GLenum target = 0, GLuint bindingPoint = 0 ) {
+		target = target ? target : internalTarget;
+		bindingPoint = bindingPoint ? bindingPoint : internalBindingPoint;
+		glBindBufferBase( target, bindingPoint, id );
+	}
+
+	void UnBindBufferBase( GLenum target = 0, GLuint bindingPoint = 0 ) {
+		target = target ? target : internalTarget;
+		bindingPoint = bindingPoint ? bindingPoint : internalBindingPoint;
+		glBindBufferBase( target, bindingPoint, 0 );
+	}
+
+	void BindBuffer( GLenum target = 0 ) {
+		target = target ? target : internalTarget;
+		glBindBuffer( target, id );
+	}
+
+	void UnBindBuffer( GLenum target = 0 ) {
+		target = target ? target : internalTarget;
+		glBindBuffer( target, 0 );
+	}
+
+	void BufferData( const GLsizeiptr size, const void* data, const GLenum usageFlags ) {
+		glNamedBufferData( id, size * sizeof( uint32_t ), data, usageFlags );
+	}
+
+	void BufferStorage( const GLsizeiptr newAreaSize, const GLsizeiptr areaCount, const void* data ) {
+		areaSize = newAreaSize;
+		maxAreas = areaCount;
+		glNamedBufferStorage( id, areaSize * areaCount * sizeof( uint32_t ), data, flags );
+		syncs.resize( areaCount );
+
+		GL_CheckErrors();
+	}
+
+	void AreaIncr() {
+		syncs[area] = glFenceSync( GL_SYNC_GPU_COMMANDS_COMPLETE, 0 );
+		area++;
+		if ( area >= maxAreas ) {
+			area = 0;
+		}
+	}
+
+	void MapAll() {
+		if ( !mapped ) {
+			mapped = true;
+			data = ( uint32_t* ) glMapNamedBufferRange( id, 0, areaSize * maxAreas * sizeof( uint32_t ), flags | mapFlags );
+		}
+	}
+
+	uint32_t* GetCurrentAreaData() {
+		if ( syncs[area] != nullptr ) {
+			if ( glClientWaitSync( syncs[area], GL_SYNC_FLUSH_COMMANDS_BIT, SYNC_TIMEOUT ) == GL_TIMEOUT_EXPIRED ) {
+				Sys::Drop( "Failed buffer %s area %u sync", name, area );
+			}
+			glDeleteSync( syncs[area] );
+		}
+
+		return data + area * areaSize;
+	}
+
+	uint32_t* GetData() {
+		return data;
+	}
+
+	void FlushCurrentArea() {
+		glFlushMappedNamedBufferRange( id, area * areaSize * sizeof( uint32_t ), areaSize * sizeof( uint32_t ) );
+	}
+
+	void FlushAll() {
+		glFlushMappedNamedBufferRange( id, 0, maxAreas * areaSize * sizeof( uint32_t ) );
+	}
+
+	void FlushRange( const GLsizeiptr offset, const GLsizeiptr size ) {
+		glFlushMappedNamedBufferRange( id, offset * sizeof( uint32_t ), size * sizeof( uint32_t ) );
+	}
+
+	uint32_t* MapBufferRange( const GLuint count ) {
+		return MapBufferRange( 0, count );
+	}
+
+	uint32_t* MapBufferRange( const GLuint offset, const GLuint count ) {
+		if ( !mapped ) {
+			mapped = true;
+			data = ( uint32_t* ) glMapNamedBufferRange( id,
+				offset * sizeof( uint32_t ), count * sizeof( uint32_t ),
+				flags | mapFlags );
+		}
+
+		return data;
+	}
+
+	void UnmapBuffer() {
+		if ( mapped ) {
+			mapped = false;
+			glUnmapNamedBuffer( id );
+		}
+	}
+
+	void GenBuffer() {
+		glCreateBuffers( 1, &id );
+	}
+
+	void DelBuffer() {
+		glDeleteBuffers( 1, &id );
+		mapped = false;
+	}
+
+	private:
+	const GLenum internalTarget;
+	const GLuint internalBindingPoint;
+
+	bool mapped = false;
+	const GLbitfield flags;
+	const GLbitfield mapFlags;
+
+	std::vector<GLsync> syncs;
+	GLsizeiptr area = 0;
+	GLsizeiptr areaSize = 0;
+	GLsizeiptr maxAreas = 0;
+	uint32_t* data;
+};
+
+// Shorthands for buffers that are only bound to one specific target
+class GLSSBO : public GLBuffer {
+	public:
+	GLSSBO( const char* name, const GLuint bindingPoint, const GLbitfield flags, const GLbitfield mapFlags ) :
+		GLBuffer( name, GL_SHADER_STORAGE_BUFFER, bindingPoint, flags, mapFlags ) {
+	}
+};
+
+class GLUBO : public GLBuffer {
+	public:
+	GLUBO( const char* name, const GLsizeiptr bindingPoint, const GLbitfield flags, const GLbitfield mapFlags ) :
+		GLBuffer( name, GL_UNIFORM_BUFFER, bindingPoint, flags, mapFlags ) {
+	}
+};
+
+class GLAtomicCounterBuffer : public GLBuffer {
+	public:
+	GLAtomicCounterBuffer( const char* name, const GLsizeiptr bindingPoint, const GLbitfield flags, const GLbitfield mapFlags ) :
+		GLBuffer( name, GL_ATOMIC_COUNTER_BUFFER, bindingPoint, flags, mapFlags ) {
+	}
+};
+
+class GLVAO {
+	public:
+	vboAttributeLayout_t attrs[ATTR_INDEX_MAX];
+	uint32_t enabledAttrs;
+
+	GLVAO( const GLuint newVBOBindingPoint ) :
+		VBOBindingPoint( newVBOBindingPoint ) {
+	}
+
+	~GLVAO() = default;
+
+	void Bind() {
+		glBindVertexArray( id );
+	}
+
+	void SetAttrs( const vertexAttributeSpec_t* attrBegin, const vertexAttributeSpec_t* attrEnd ) {
+		uint32_t ofs = 0;
+		for ( const vertexAttributeSpec_t* spec = attrBegin; spec < attrEnd; spec++ ) {
+			vboAttributeLayout_t& attr = attrs[spec->attrIndex];
+			ASSERT_NQ( spec->numComponents, 0U );
+			attr.componentType = spec->componentStorageType;
+			if ( attr.componentType == GL_HALF_FLOAT && !glConfig2.halfFloatVertexAvailable ) {
+				attr.componentType = GL_FLOAT;
+			}
+			attr.numComponents = spec->numComponents;
+			attr.normalize = spec->attrOptions & ATTR_OPTION_NORMALIZE ? GL_TRUE : GL_FALSE;
+
+			attr.ofs = ofs;
+			ofs += attr.numComponents * R_ComponentSize( attr.componentType );
+			ofs = ( ofs + 3 ) & ~3; // 4 is minimum alignment for any vertex attribute
+
+			enabledAttrs |= 1 << spec->attrIndex;
+		}
+
+		stride = ofs;
+
+		for ( const vertexAttributeSpec_t* spec = attrBegin; spec < attrEnd; spec++ ) {
+			const int index = spec->attrIndex;
+			vboAttributeLayout_t& attr = attrs[index];
+
+			attr.stride = stride;
+
+			glEnableVertexArrayAttrib( id, index );
+			glVertexArrayAttribFormat( id, index, attr.numComponents, attr.componentType,
+				attr.normalize, attr.ofs );
+			glVertexArrayAttribBinding( id, index, VBOBindingPoint );
+		}
+	}
+
+	void SetVertexBuffer( const GLBuffer buffer, const GLuint offset ) {
+		glVertexArrayVertexBuffer( id, VBOBindingPoint, buffer.id, offset, stride );
+	}
+
+	void SetIndexBuffer( const GLBuffer buffer ) {
+		glVertexArrayElementBuffer( id, buffer.id );
+	}
+
+	void GenVAO() {
+		glGenVertexArrays( 1, &id );
+	}
+
+	void DelVAO() {
+		glDeleteVertexArrays( 1, &id );
+	}
+
+	private:
+	GLuint id;
+	const GLuint VBOBindingPoint;
+	GLuint stride;
+};
 
 void GLBufferCopy( GLBuffer* src, GLBuffer* dst, GLintptr srcOffset, GLintptr dstOffset, GLsizeiptr size );
 

src/engine/renderer/Material.h

@@ -40,6 +40,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "gl_shader.h"
 #include "tr_local.h"
+#include "GLMemory.h"
 
 static constexpr uint32_t MAX_DRAWCOMMAND_TEXTURES = 64;