mirror of
https://github.com/love2d/love.git
synced 2026-08-17 19:23:38 +02:00
Move backend-agnostic Mesh and SpriteBatch code out of the opengl implementation folder.
--HG-- branch : minor
This commit is contained in:
Alex Szpakowski
@@ -18,78 +18,23 @@
|
||||
* 3. This notice may not be removed or altered from any source distribution.
|
||||
**/
|
||||
|
||||
#ifndef LOVE_GRAPHICS_OPENGL_MESH_H
|
||||
#define LOVE_GRAPHICS_OPENGL_MESH_H
|
||||
#pragma once
|
||||
|
||||
// LOVE
|
||||
#include "common/config.h"
|
||||
#include "common/int.h"
|
||||
#include "common/math.h"
|
||||
#include "common/StringMap.h"
|
||||
#include "graphics/Drawable.h"
|
||||
#include "graphics/Texture.h"
|
||||
#include "graphics/vertex.h"
|
||||
#include "graphics/Buffer.h"
|
||||
#include "graphics/Mesh.h"
|
||||
#include "OpenGL.h"
|
||||
|
||||
// C++
|
||||
#include <vector>
|
||||
#include <unordered_map>
|
||||
|
||||
namespace love
|
||||
{
|
||||
namespace graphics
|
||||
{
|
||||
|
||||
class Graphics;
|
||||
|
||||
namespace opengl
|
||||
{
|
||||
|
||||
/**
|
||||
* Holds and draws arbitrary vertex geometry.
|
||||
* Each vertex in the Mesh has a collection of vertex attributes specified on
|
||||
* creation.
|
||||
**/
|
||||
class Mesh : public Drawable
|
||||
class Mesh : public love::graphics::Mesh
|
||||
{
|
||||
public:
|
||||
|
||||
static love::Type type;
|
||||
|
||||
// How the Mesh's vertices are used when drawing.
|
||||
// http://escience.anu.edu.au/lecture/cg/surfaceModeling/image/surfaceModeling015.png
|
||||
enum DrawMode
|
||||
{
|
||||
DRAWMODE_FAN,
|
||||
DRAWMODE_STRIP,
|
||||
DRAWMODE_TRIANGLES,
|
||||
DRAWMODE_POINTS,
|
||||
DRAWMODE_MAX_ENUM
|
||||
};
|
||||
|
||||
// The type of data a vertex attribute can store.
|
||||
enum DataType
|
||||
{
|
||||
DATA_BYTE,
|
||||
DATA_FLOAT,
|
||||
DATA_MAX_ENUM
|
||||
};
|
||||
|
||||
enum AttributeStep
|
||||
{
|
||||
STEP_PER_VERTEX,
|
||||
STEP_PER_INSTANCE,
|
||||
STEP_MAX_ENUM
|
||||
};
|
||||
|
||||
struct AttribFormat
|
||||
{
|
||||
std::string name;
|
||||
DataType type;
|
||||
int components; // max 4
|
||||
};
|
||||
|
||||
Mesh(graphics::Graphics *gfx, const std::vector<AttribFormat> &vertexformat, const void *data, size_t datasize, DrawMode drawmode, vertex::Usage usage);
|
||||
Mesh(graphics::Graphics *gfx, const std::vector<AttribFormat> &vertexformat, int vertexcount, DrawMode drawmode, vertex::Usage usage);
|
||||
|
||||
@@ -98,184 +43,16 @@ public:
|
||||
|
||||
virtual ~Mesh();
|
||||
|
||||
/**
|
||||
* Sets the values of all attributes at a specific vertex index in the Mesh.
|
||||
* The size of the data must be less than or equal to the total size of all
|
||||
* vertex attributes.
|
||||
**/
|
||||
void setVertex(size_t vertindex, const void *data, size_t datasize);
|
||||
size_t getVertex(size_t vertindex, void *data, size_t datasize);
|
||||
void *getVertexScratchBuffer();
|
||||
|
||||
/**
|
||||
* Sets the values for a single attribute at a specific vertex index in the
|
||||
* Mesh. The size of the data must be less than or equal to the size of the
|
||||
* attribute.
|
||||
**/
|
||||
void setVertexAttribute(size_t vertindex, int attribindex, const void *data, size_t datasize);
|
||||
size_t getVertexAttribute(size_t vertindex, int attribindex, void *data, size_t datasize);
|
||||
|
||||
/**
|
||||
* Gets the total number of vertices that can be used when drawing the Mesh.
|
||||
**/
|
||||
size_t getVertexCount() const;
|
||||
|
||||
/**
|
||||
* Gets the size in bytes of the start of one vertex to the start of the
|
||||
* next, in the buffer.
|
||||
**/
|
||||
size_t getVertexStride() const;
|
||||
|
||||
/**
|
||||
* Gets the format of each vertex attribute stored in the Mesh.
|
||||
**/
|
||||
const std::vector<AttribFormat> &getVertexFormat() const;
|
||||
DataType getAttributeInfo(int attribindex, int &components) const;
|
||||
int getAttributeIndex(const std::string &name) const;
|
||||
|
||||
/**
|
||||
* Sets whether a specific vertex attribute is used when drawing the Mesh.
|
||||
**/
|
||||
void setAttributeEnabled(const std::string &name, bool enable);
|
||||
bool isAttributeEnabled(const std::string &name) const;
|
||||
|
||||
/**
|
||||
* Attaches a vertex attribute from another Mesh to this one. The attribute
|
||||
* will be used when drawing this Mesh.
|
||||
**/
|
||||
void attachAttribute(const std::string &name, Mesh *mesh, const std::string &attachname, AttributeStep step = STEP_PER_VERTEX);
|
||||
bool detachAttribute(const std::string &name);
|
||||
|
||||
void *mapVertexData();
|
||||
void unmapVertexData(size_t modifiedoffset = 0, size_t modifiedsize = -1);
|
||||
|
||||
/**
|
||||
* Flushes all modified data to the GPU.
|
||||
**/
|
||||
void flush();
|
||||
|
||||
/**
|
||||
* Sets the vertex map to use when drawing the Mesh. The vertex map
|
||||
* determines the order in which vertices are used by the draw mode.
|
||||
* A 0-element vector is equivalent to the default vertex map:
|
||||
* {0, 1, 2, 3, 4, ...}
|
||||
**/
|
||||
void setVertexMap(const std::vector<uint32> &map);
|
||||
void setVertexMap(IndexDataType datatype, const void *data, size_t datasize);
|
||||
void setVertexMap();
|
||||
|
||||
/**
|
||||
* Fills the uint32 vector passed into the method with the previously set
|
||||
* vertex map (index buffer) values.
|
||||
**/
|
||||
bool getVertexMap(std::vector<uint32> &map) const;
|
||||
|
||||
/**
|
||||
* Gets the total number of elements in the vertex map array.
|
||||
**/
|
||||
size_t getVertexMapCount() const;
|
||||
|
||||
/**
|
||||
* Sets the texture used when drawing the Mesh.
|
||||
**/
|
||||
void setTexture(Texture *texture);
|
||||
|
||||
/**
|
||||
* Disables any texture from being used when drawing the Mesh.
|
||||
**/
|
||||
void setTexture();
|
||||
|
||||
/**
|
||||
* Gets the texture used when drawing the Mesh. May return null if no
|
||||
* texture is set.
|
||||
**/
|
||||
Texture *getTexture() const;
|
||||
|
||||
/**
|
||||
* Sets the draw mode used when drawing the Mesh.
|
||||
**/
|
||||
void setDrawMode(DrawMode mode);
|
||||
DrawMode getDrawMode() const;
|
||||
|
||||
void setDrawRange(int start, int count);
|
||||
void setDrawRange();
|
||||
bool getDrawRange(int &start, int &count) const;
|
||||
|
||||
int bindAttributeToShaderInput(int attributeindex, const std::string &inputname);
|
||||
|
||||
void drawInstanced(Graphics *gfx, const Matrix4 &m, int instancecount);
|
||||
|
||||
// Implements Drawable.
|
||||
void draw(Graphics *gfx, const Matrix4 &m) override;
|
||||
|
||||
static bool getConstant(const char *in, DrawMode &out);
|
||||
static bool getConstant(DrawMode in, const char *&out);
|
||||
|
||||
static bool getConstant(const char *in, DataType &out);
|
||||
static bool getConstant(DataType in, const char *&out);
|
||||
|
||||
static bool getConstant(const char *in, AttributeStep &out);
|
||||
static bool getConstant(AttributeStep in, const char *&out);
|
||||
int bindAttributeToShaderInput(int attributeindex, const std::string &inputname) override;
|
||||
void drawInstanced(Graphics *gfx, const Matrix4 &m, int instancecount) override;
|
||||
|
||||
private:
|
||||
|
||||
struct AttachedAttribute
|
||||
{
|
||||
Mesh *mesh;
|
||||
int index;
|
||||
AttributeStep step;
|
||||
bool enabled;
|
||||
};
|
||||
|
||||
void setupAttachedAttributes();
|
||||
void calculateAttributeSizes();
|
||||
size_t getAttributeOffset(size_t attribindex) const;
|
||||
|
||||
static size_t getAttribFormatSize(const AttribFormat &format);
|
||||
|
||||
static GLenum getGLDrawMode(DrawMode mode);
|
||||
static GLenum getGLDataType(DataType type);
|
||||
|
||||
std::vector<AttribFormat> vertexFormat;
|
||||
std::vector<size_t> attributeSizes;
|
||||
|
||||
std::unordered_map<std::string, AttachedAttribute> attachedAttributes;
|
||||
|
||||
// Vertex buffer, for the vertex data.
|
||||
Buffer *vbo;
|
||||
size_t vertexCount;
|
||||
size_t vertexStride;
|
||||
|
||||
// Block of memory whose size is at least as large as a single vertex. Helps
|
||||
// avoid memory allocations when using Mesh::setVertex etc.
|
||||
char *vertexScratchBuffer;
|
||||
|
||||
// Element (vertex index) buffer, for the vertex map.
|
||||
Buffer *ibo;
|
||||
bool useIndexBuffer;
|
||||
size_t elementCount;
|
||||
IndexDataType elementDataType;
|
||||
|
||||
DrawMode drawMode;
|
||||
|
||||
int rangeStart;
|
||||
int rangeCount;
|
||||
|
||||
StrongRef<Texture> texture;
|
||||
|
||||
static StringMap<DrawMode, DRAWMODE_MAX_ENUM>::Entry drawModeEntries[];
|
||||
static StringMap<DrawMode, DRAWMODE_MAX_ENUM> drawModes;
|
||||
|
||||
static StringMap<DataType, DATA_MAX_ENUM>::Entry dataTypeEntries[];
|
||||
static StringMap<DataType, DATA_MAX_ENUM> dataTypes;
|
||||
|
||||
static StringMap<AttributeStep, STEP_MAX_ENUM>::Entry attributeStepEntries[];
|
||||
static StringMap<AttributeStep, STEP_MAX_ENUM> attributeSteps;
|
||||
|
||||
}; // Mesh
|
||||
|
||||
} // opengl
|
||||
} // graphics
|
||||
} // love
|
||||
|
||||
#endif // LOVE_GRAPHICS_OPENGL_MESH_H
|
||||
|
||||
Reference in New Issue
Block a user