lovr/src/graphics/graphics.h

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#include "graphics/font.h"
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#include "graphics/mesh.h"
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#include "graphics/model.h"
#include "graphics/shader.h"
#include "graphics/skybox.h"
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#include "graphics/texture.h"
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#include "math/math.h"
#include "lib/glfw.h"
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#pragma once
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#define MAX_CANVASES 4
#define MAX_TRANSFORMS 60
#define INTERNAL_TRANSFORMS 4
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typedef enum {
BLEND_ALPHA,
BLEND_ADD,
BLEND_SUBTRACT,
BLEND_MULTIPLY,
BLEND_LIGHTEN,
BLEND_DARKEN,
BLEND_SCREEN,
BLEND_REPLACE
} BlendMode;
typedef enum {
BLEND_ALPHA_MULTIPLY,
BLEND_PREMULTIPLIED
} BlendAlphaMode;
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typedef enum {
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DRAW_MODE_FILL,
DRAW_MODE_LINE
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} DrawMode;
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typedef enum {
POLYGON_WINDING_CLOCKWISE = GL_CW,
POLYGON_WINDING_COUNTERCLOCKWISE = GL_CCW
} PolygonWinding;
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typedef enum {
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COMPARE_NONE = 0,
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COMPARE_EQUAL = GL_EQUAL,
COMPARE_NOT_EQUAL = GL_NOTEQUAL,
COMPARE_LESS = GL_LESS,
COMPARE_LEQUAL = GL_LEQUAL,
COMPARE_GEQUAL = GL_GEQUAL,
COMPARE_GREATER = GL_GREATER
} CompareMode;
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typedef struct {
int initialized;
float pointSizes[2];
int textureSize;
int textureMSAA;
float textureAnisotropy;
} GraphicsLimits;
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typedef struct {
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int framebuffer;
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float projection[16];
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int viewport[4];
} CanvasState;
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typedef struct {
GLFWwindow* window;
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Shader* activeShader;
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Shader* defaultShader;
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Shader* skyboxShader;
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Shader* fontShader;
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Shader* fullscreenShader;
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Font* activeFont;
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Font* defaultFont;
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Texture* activeTexture;
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Texture* defaultTexture;
float transforms[MAX_TRANSFORMS + INTERNAL_TRANSFORMS][16];
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CanvasState canvases[MAX_CANVASES];
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int transform;
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int canvas;
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unsigned int color;
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BlendMode blendMode;
BlendAlphaMode blendAlphaMode;
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GLuint shapeArray;
GLuint shapeBuffer;
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GLuint shapeIndexBuffer;
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vec_float_t shapeData;
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vec_uint_t shapeIndices;
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float lineWidth;
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float pointSize;
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int isCullingEnabled;
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PolygonWinding polygonWinding;
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CompareMode depthTest;
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int isWireframe;
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TextureFilter defaultFilter;
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GraphicsLimits limits;
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} GraphicsState;
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// Base
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void lovrGraphicsInit();
void lovrGraphicsDestroy();
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void lovrGraphicsReset();
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void lovrGraphicsClear(int color, int depth);
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void lovrGraphicsPresent();
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void lovrGraphicsPrepare();
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// State
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void lovrGraphicsGetBackgroundColor(float* r, float* g, float* b, float* a);
void lovrGraphicsSetBackgroundColor(float r, float g, float b, float a);
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void lovrGraphicsGetBlendMode(BlendMode* mode, BlendAlphaMode* alphaMode);
void lovrGraphicsSetBlendMode(BlendMode mode, BlendAlphaMode alphaMode);
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void lovrGraphicsGetColor(unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a);
void lovrGraphicsSetColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
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Shader* lovrGraphicsGetShader();
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void lovrGraphicsSetShader(Shader* shader);
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Font* lovrGraphicsGetFont();
void lovrGraphicsSetFont(Font* font);
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Texture* lovrGraphicsGetTexture();
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void lovrGraphicsBindTexture(Texture* texture);
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mat4 lovrGraphicsGetProjection();
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void lovrGraphicsSetProjection(mat4 projection);
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float lovrGraphicsGetLineWidth();
void lovrGraphicsSetLineWidth(float width);
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float lovrGraphicsGetPointSize();
void lovrGraphicsSetPointSize(float size);
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int lovrGraphicsIsCullingEnabled();
void lovrGraphicsSetCullingEnabled(int isEnabled);
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PolygonWinding lovrGraphicsGetPolygonWinding();
void lovrGraphicsSetPolygonWinding(PolygonWinding winding);
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CompareMode lovrGraphicsGetDepthTest();
void lovrGraphicsSetDepthTest(CompareMode depthTest);
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int lovrGraphicsIsWireframe();
void lovrGraphicsSetWireframe(int wireframe);
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TextureFilter lovrGraphicsGetDefaultFilter();
void lovrGraphicsSetDefaultFilter(TextureFilter filter);
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int lovrGraphicsGetWidth();
int lovrGraphicsGetHeight();
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GraphicsLimits lovrGraphicsGetLimits();
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void lovrGraphicsPushCanvas();
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void lovrGraphicsPopCanvas();
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void lovrGraphicsSetViewport(int x, int y, int w, int h);
void lovrGraphicsBindFramebuffer(int framebuffer);
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// Transforms
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int lovrGraphicsPush();
int lovrGraphicsPop();
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void lovrGraphicsOrigin();
void lovrGraphicsTranslate(float x, float y, float z);
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void lovrGraphicsRotate(float angle, float ax, float ay, float az);
void lovrGraphicsScale(float x, float y, float z);
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void lovrGraphicsMatrixTransform(mat4 transform);
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// Primitives
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void lovrGraphicsPoints(float* points, int count);
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void lovrGraphicsLine(float* points, int count);
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void lovrGraphicsTriangle(DrawMode mode, float* points);
void lovrGraphicsPlane(DrawMode mode, Texture* texture, mat4 transform);
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void lovrGraphicsPlaneFullscreen(Texture* texture);
void lovrGraphicsBox(DrawMode mode, Texture* texture, mat4 transform);
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void lovrGraphicsCylinder(float x1, float y1, float z1, float x2, float y2, float z2, float r1, float r2, int capped, int segments);
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void lovrGraphicsSphere(Texture* texture, mat4 transform, int segments);
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void lovrGraphicsSkybox(Skybox* skybox, float angle, float ax, float ay, float az);
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void lovrGraphicsPrint(const char* str, mat4 transform, float wrap, HorizontalAlign halign, VerticalAlign valign);