#include "stddef.h"
#include "./cassert.h"
#include "./deps/SOIL/SOIL.h"
#include "./glad/include/glad/glad.h"

Data Structures
struct	BLZ_BlendFunc
	Defines a blending function. More...

struct	BLZ_Rectangle
	A rectangle which has it's top-left corner position, width and height expressed in floats. More...

struct	BLZ_RenderTarget
	Render target object. More...

struct	BLZ_SpriteQuad
	Underlying sprite quad data structure. More...

struct	BLZ_Texture
	Defines a texture. More...

struct	BLZ_Vector2
	A vector which contains 2 floats. More...

struct	BLZ_Vector4
	A vector which contains 4 floats. More...

struct	BLZ_Vertex
	Underlying vertex array structure. More...

Typedefs
typedef struct BLZ_Shader	BLZ_Shader
	Represents a GLSL shader handle. More...

typedef struct BLZ_SpriteBatch	BLZ_SpriteBatch
	Defines a dynamic sprite batch which is drawn when BLZ_Present is called. More...

typedef struct BLZ_StaticBatch	BLZ_StaticBatch
	Defines a pre-baked sprite batch which is useful for drawing static geometry like tiles. More...

typedef void(*	glGetProcAddress )(const char *name)
	OpenGL function loader signature. More...

Enumerations
enum	BLZ_BlendFactor { ZERO, ONE, SRC_COLOR, ONE_MINUS_SRC_COLOR, DST_COLOR, ONE_MINUS_DST_COLOR, SRC_ALPHA, ONE_MINUS_SRC_ALPHA, DST_ALPHA, ONE_MINUS_DST_ALPHA }
	Defines a blend factor in blending equation. More...

enum	BLZ_ImageChannels { AUTO, GRAYSCALE, GRAYSCALE_ALPHA, RGB, RGBA }
	Defines which channels should be used when loading a texture. More...

enum	BLZ_ImageFlags { POWER_OF_TWO, MIPMAPS, TEXTURE_REPEATS, MULTIPLY_ALPHA, INVERT_Y, COMPRESS_TO_DXT, DDS_LOAD_DIRECT, NTSC_SAFE_RGB, CoCg_Y, TEXTURE_RECTANGLE }
	Defines various options for image loading. More...

enum	BLZ_InitFlags { DEFAULT, NO_BUFFERING }
	Defines initialization flags for dynamic batches. More...

enum	BLZ_SaveImageFormat { TGA, BMP, DDS }
	Defines formats in which images can be saved. More...

enum	BLZ_SpriteFlip { NONE, FLIP_H, FLIP_V, BOTH }
	Defines if the sprite should be flipped in any direction. More...

enum	BLZ_TextureFilter { NEAREST, LINEAR }
	Defines texture filtering modes. More...

enum	BLZ_TextureWrap { CLAMP_TO_EDGE, REPEAT, MIRRORED_REPEAT }
	Defines texture wrapping modes. More...

Functions
BLZAPIENTRY int BLZAPICALL	BLZ_BindRenderTarget (struct BLZ_RenderTarget *target)
	Binds the specified render target for output. More...

BLZAPIENTRY int BLZAPICALL	BLZ_BindTexture (struct BLZ_Texture *texture, int slot)
	Binds the specified texture to the specified slot number. More...

BLZAPIENTRY void BLZAPICALL	BLZ_Clear ()
	Clears the screen with the specified color. More...

BLZAPIENTRY struct BLZ_Shader *BLZAPICALL	BLZ_CompileShader (char vert, char frag)
	Compiles a shader program from the specified sources. More...

BLZAPIENTRY struct BLZ_SpriteBatch *BLZAPICALL	BLZ_CreateBatch (int max_buckets, int max_sprites_per_bucket, enum BLZ_InitFlags flags)
	Creates a new dynamic batch using the specified parameters. More...

BLZAPIENTRY struct BLZ_RenderTarget *BLZAPICALL	BLZ_CreateRenderTarget (int width, int height)
	Creates a RGBA render target using specified parameters. More...

BLZAPIENTRY struct BLZ_StaticBatch BLZAPICALL *	BLZ_CreateStatic (struct BLZ_Texture *texture, int max_sprite_count)
	Creates a 'static' batch object. More...

BLZAPIENTRY int BLZAPICALL	BLZ_Draw (struct BLZ_SpriteBatch batch, struct BLZ_Texture texture, struct BLZ_Vector2 position, struct BLZ_Rectangle srcRectangle, float rotation, struct BLZ_Vector2 origin, struct BLZ_Vector2 *scale, struct BLZ_Vector4 color, enum BLZ_SpriteFlip effects)
	Adds a sprite to specified batch using specified parameters. More...

BLZAPIENTRY int BLZAPICALL	BLZ_DrawImmediate (struct BLZ_Texture texture, struct BLZ_Vector2 position, struct BLZ_Rectangle srcRectangle, float rotation, struct BLZ_Vector2 origin, struct BLZ_Vector2 scale, struct BLZ_Vector4 color, enum BLZ_SpriteFlip effects)
	Immediately draws a sprite using the specified parameters to screen. More...

BLZAPIENTRY int BLZAPICALL	BLZ_DrawStatic (struct BLZ_StaticBatch batch, struct BLZ_Vector2 position, struct BLZ_Rectangle srcRectangle, float rotation, struct BLZ_Vector2 origin, struct BLZ_Vector2 scale, struct BLZ_Vector4 color, enum BLZ_SpriteFlip effects)
	Adds a sprite to specified batch using specified parameters. More...

BLZAPIENTRY int BLZAPICALL	BLZ_FreeBatch (struct BLZ_SpriteBatch *batch)
	Destroys the specified dynamic batch object. More...

BLZAPIENTRY int BLZAPICALL	BLZ_FreeBatchStatic (struct BLZ_StaticBatch *batch)
	Destroys the specified static batch object. More...

BLZAPIENTRY int BLZAPICALL	BLZ_FreeRenderTarget (struct BLZ_RenderTarget *target)
	Destroys the specified render target. More...

BLZAPIENTRY int BLZAPICALL	BLZ_FreeShader (BLZ_Shader *program)
	Frees memory used by specified shader program. More...

BLZAPIENTRY int BLZAPICALL	BLZ_FreeTexture (struct BLZ_Texture *texture)
	Frees the specified texture. More...

BLZAPIENTRY struct BLZ_Shader BLZAPICALL *	BLZ_GetDefaultShader ()
	Returns a pointer to the default shader program. More...

BLZAPIENTRY char *BLZAPICALL	BLZ_GetLastError ()
	Returns a pointer to error string, if any. More...

BLZAPIENTRY int BLZAPICALL	BLZ_GetMaxTextureSlots ()
	Returns the maximum count of available texture slots which can be used simultaneously for BLZ_BindTexture texture binding. More...

BLZAPIENTRY int BLZAPICALL	BLZ_GetOptions (struct BLZ_SpriteBatch batch, int max_buckets, int max_sprites_per_bucket, enum BLZ_InitFlags flags)
	Reads options specified in BLZ_CreateBatch for the specified batch object. More...

BLZAPIENTRY int BLZAPICALL	BLZ_GetOptionsStatic (struct BLZ_StaticBatch batch, int max_sprite_count)
	Reads options specified in BLZ_CreateStatic for the specified static batch object. More...

BLZAPIENTRY GLint BLZAPICALL	BLZ_GetUniformLocation (struct BLZ_Shader shader, const char name)
	Returns the uniform location for the specified shader program. More...

BLZAPIENTRY int BLZAPICALL	BLZ_Load (glGetProcAddress loader)
	Loads the OpenGL functions using the specified loader and initializes the library. More...

BLZAPIENTRY struct BLZ_Texture *BLZAPICALL	BLZ_LoadTextureFromFile (const char *filename, enum BLZ_ImageChannels channels, unsigned int texture_id, enum BLZ_ImageFlags flags)
	Loads a texture from file. More...

BLZAPIENTRY struct BLZ_Texture *BLZAPICALL	BLZ_LoadTextureFromMemory (const unsigned char *const buffer, int buffer_length, enum BLZ_ImageChannels force_channels, unsigned int texture_id, enum BLZ_ImageFlags flags)
	Loads a texture from memory. More...

BLZAPIENTRY int BLZAPICALL	BLZ_LowerDraw (struct BLZ_SpriteBatch batch, GLuint texture, struct BLZ_SpriteQuad quad)
	Lower level dynamic batching function, called by BLZ_Draw. More...

BLZAPIENTRY int BLZAPICALL	BLZ_LowerDrawImmediate (GLuint texture, struct BLZ_SpriteQuad *quad)
	Lower level immediate drawing function, called by BLZ_DrawImmediate. More...

BLZAPIENTRY int BLZAPICALL	BLZ_LowerDrawStatic (struct BLZ_StaticBatch batch, struct BLZ_SpriteQuad quad)
	Lower level static batching function, called by BLZ_DrawStatic. More...

BLZAPIENTRY int BLZAPICALL	BLZ_Present (struct BLZ_SpriteBatch *batch)
	Draws everything from the specified dynamic batch to screen. More...

BLZAPIENTRY int BLZAPICALL	BLZ_PresentStatic (struct BLZ_StaticBatch batch, GLfloat transformMatrix4x4)
	Draws everything from the specified static batch to screen. More...

BLZAPIENTRY int BLZAPICALL	BLZ_SaveScreenshot (const char *filename, enum BLZ_SaveImageFormat format, int x, int y, int width, int height)
	Saves a screenshot to file. More...

BLZAPIENTRY void BLZAPICALL	BLZ_SetBlendMode (const struct BLZ_BlendFunc func)
	Sets the currently used blend function. More...

BLZAPIENTRY void BLZAPICALL	BLZ_SetClearColor (struct BLZ_Vector4 color)
	Sets the background clear color. More...

BLZAPIENTRY int BLZAPICALL	BLZ_SetTextureFiltering (struct BLZ_Texture *texture, enum BLZ_TextureFilter minification, enum BLZ_TextureFilter magnification)
	Sets the texture filtering mode. More...

BLZAPIENTRY int BLZAPICALL	BLZ_SetTextureWrap (struct BLZ_Texture *texture, enum BLZ_TextureWrap x, enum BLZ_TextureWrap y)
	Sets the texture wrapping mode. More...

BLZAPIENTRY int BLZAPICALL	BLZ_SetViewport (int w, int h)
	Sets the viewport size in pixels. More...

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform1f (GLint location, GLfloat v0)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform1i (GLint location, GLint v0)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform1ui (GLint location, GLuint v0)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform2f (GLint location, GLfloat v0, GLfloat v1)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform2i (GLint location, GLint v0, GLint v1)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform2ui (GLint location, GLuint v0, GLuint v1)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform3f (GLint location, GLfloat v0, GLfloat v1, GLfloat v2)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform3i (GLint location, GLint v0, GLint v1, GLint v2)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform3ui (GLint location, GLuint v0, GLuint v1, GLuint v2)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform4f (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform4i (GLint location, GLint v0, GLint v1, GLint v2, GLint v3)

BLZAPIENTRY void BLZAPICALL	BLZ_Uniform4ui (GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix2x3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix2x4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix3x2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix3x4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix4x2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY void BLZAPICALL	BLZ_UniformMatrix4x3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value)

BLZAPIENTRY int BLZAPICALL	BLZ_UseShader (BLZ_Shader *program)
	Sets the specified shader as the current. More...

Variables
const struct BLZ_BlendFunc	BLEND_ADDITIVE
	Additive blending (src = ONE, dst = ONE) More...

const struct BLZ_BlendFunc	BLEND_MULTIPLY
	Multiplicative blending (src = DST_COLOR, dst = ZERO) More...

const struct BLZ_BlendFunc	BLEND_NORMAL
	Normal alpha blending (src = SRC_ALPHA, dst = ONE_MINUS_SRC_ALPHA) More...