mirror of https://github.com/bjornbytes/lovr.git
228 lines
7.1 KiB
C
228 lines
7.1 KiB
C
#include "graphics/canvas.h"
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#include "graphics/font.h"
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#include "graphics/material.h"
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#include "graphics/mesh.h"
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#include "graphics/shader.h"
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#include "graphics/texture.h"
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#include "math/math.h"
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#include "lib/glfw.h"
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#include <stdbool.h>
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#pragma once
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#define MAX_CANVASES 4
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#define MAX_DISPLAYS 4
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#define MAX_TRANSFORMS 60
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#define INTERNAL_TRANSFORMS 4
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#define DEFAULT_SHADER_COUNT 4
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#define MAX_TEXTURES 16
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typedef void (*StencilCallback)(void* userdata);
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typedef enum {
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BLEND_ALPHA,
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BLEND_ADD,
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BLEND_SUBTRACT,
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BLEND_MULTIPLY,
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BLEND_LIGHTEN,
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BLEND_DARKEN,
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BLEND_SCREEN,
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BLEND_REPLACE
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} BlendMode;
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typedef enum {
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BLEND_ALPHA_MULTIPLY,
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BLEND_PREMULTIPLIED
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} BlendAlphaMode;
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typedef enum {
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DRAW_MODE_FILL,
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DRAW_MODE_LINE
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} DrawMode;
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typedef enum {
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ARC_MODE_PIE,
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ARC_MODE_OPEN,
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ARC_MODE_CLOSED
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} ArcMode;
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typedef enum {
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WINDING_CLOCKWISE = GL_CW,
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WINDING_COUNTERCLOCKWISE = GL_CCW
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} Winding;
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typedef enum {
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COMPARE_NONE = 0,
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COMPARE_EQUAL = GL_EQUAL,
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COMPARE_NOT_EQUAL = GL_NOTEQUAL,
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COMPARE_LESS = GL_LESS,
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COMPARE_LEQUAL = GL_LEQUAL,
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COMPARE_GEQUAL = GL_GEQUAL,
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COMPARE_GREATER = GL_GREATER
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} CompareMode;
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typedef enum {
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STENCIL_REPLACE = GL_REPLACE,
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STENCIL_INCREMENT = GL_INCR,
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STENCIL_DECREMENT = GL_DECR,
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STENCIL_INCREMENT_WRAP = GL_INCR_WRAP,
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STENCIL_DECREMENT_WRAP = GL_DECR_WRAP,
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STENCIL_INVERT = GL_INVERT
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} StencilAction;
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typedef enum {
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MATRIX_MODEL,
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MATRIX_VIEW
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} MatrixType;
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typedef struct {
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int framebuffer;
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float projections[32];
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float views[32];
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int viewport[4];
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} Display;
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typedef struct {
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bool initialized;
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float pointSizes[2];
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int textureSize;
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int textureMSAA;
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float textureAnisotropy;
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} GraphicsLimits;
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typedef struct {
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int drawCalls;
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int shaderSwitches;
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} GraphicsStats;
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typedef struct {
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bool initialized;
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GLFWwindow* window;
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Shader* defaultShaders[DEFAULT_SHADER_COUNT];
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DefaultShader defaultShader;
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Material* defaultMaterial;
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Font* defaultFont;
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Texture* defaultTexture;
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float transforms[MAX_TRANSFORMS + INTERNAL_TRANSFORMS][2][16];
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int transform;
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Color backgroundColor;
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BlendMode blendMode;
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BlendAlphaMode blendAlphaMode;
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Canvas* canvas[MAX_CANVASES];
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int canvasCount;
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Color color;
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bool culling;
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TextureFilter defaultFilter;
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CompareMode depthTest;
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bool depthWrite;
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Font* font;
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bool gammaCorrect;
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GraphicsLimits limits;
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float lineWidth;
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float pointSize;
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Shader* shader;
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CompareMode stencilMode;
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int stencilValue;
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Winding winding;
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bool wireframe;
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Mesh* mesh;
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uint32_t cameraUBO;
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Display displays[MAX_DISPLAYS];
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int display;
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Texture* textures[MAX_TEXTURES];
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bool stencilEnabled;
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bool stencilWriting;
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uint32_t program;
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uint32_t vertexArray;
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uint32_t vertexBuffer;
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uint32_t indexBuffer;
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GraphicsStats stats;
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} GraphicsState;
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// Base
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void lovrGraphicsInit();
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void lovrGraphicsDestroy();
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void lovrGraphicsReset();
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void lovrGraphicsClear(bool clearColor, bool clearDepth, bool clearStencil, Color color, float depth, int stencil);
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void lovrGraphicsPresent();
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void lovrGraphicsPrepare(Material* material, float* pose);
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void lovrGraphicsCreateWindow(int w, int h, bool fullscreen, int msaa, const char* title, const char* icon);
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int lovrGraphicsGetWidth();
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int lovrGraphicsGetHeight();
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GraphicsStats lovrGraphicsGetStats();
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// State
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Color lovrGraphicsGetBackgroundColor();
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void lovrGraphicsSetBackgroundColor(Color color);
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void lovrGraphicsGetBlendMode(BlendMode* mode, BlendAlphaMode* alphaMode);
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void lovrGraphicsSetBlendMode(BlendMode mode, BlendAlphaMode alphaMode);
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void lovrGraphicsGetCanvas(Canvas** canvas, int* count);
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void lovrGraphicsSetCanvas(Canvas** canvas, int count);
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Color lovrGraphicsGetColor();
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void lovrGraphicsSetColor(Color color);
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bool lovrGraphicsIsCullingEnabled();
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void lovrGraphicsSetCullingEnabled(bool culling);
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TextureFilter lovrGraphicsGetDefaultFilter();
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void lovrGraphicsSetDefaultFilter(TextureFilter filter);
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void lovrGraphicsGetDepthTest(CompareMode* mode, bool* write);
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void lovrGraphicsSetDepthTest(CompareMode depthTest, bool write);
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Font* lovrGraphicsGetFont();
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void lovrGraphicsSetFont(Font* font);
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bool lovrGraphicsIsGammaCorrect();
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void lovrGraphicsSetGammaCorrect(bool gammaCorrect);
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GraphicsLimits lovrGraphicsGetLimits();
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float lovrGraphicsGetLineWidth();
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void lovrGraphicsSetLineWidth(float width);
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float lovrGraphicsGetPointSize();
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void lovrGraphicsSetPointSize(float size);
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Shader* lovrGraphicsGetShader();
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void lovrGraphicsSetShader(Shader* shader);
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void lovrGraphicsGetStencilTest(CompareMode* mode, int* value);
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void lovrGraphicsSetStencilTest(CompareMode mode, int value);
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Winding lovrGraphicsGetWinding();
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void lovrGraphicsSetWinding(Winding winding);
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bool lovrGraphicsIsWireframe();
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void lovrGraphicsSetWireframe(bool wireframe);
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// Transforms
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void lovrGraphicsPush();
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void lovrGraphicsPop();
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void lovrGraphicsOrigin();
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void lovrGraphicsTranslate(MatrixType type, float x, float y, float z);
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void lovrGraphicsRotate(MatrixType type, float angle, float ax, float ay, float az);
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void lovrGraphicsScale(MatrixType type, float x, float y, float z);
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void lovrGraphicsMatrixTransform(MatrixType type, mat4 transform);
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// Primitives
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void lovrGraphicsPoints(uint32_t count);
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void lovrGraphicsLine(uint32_t count);
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void lovrGraphicsTriangle(DrawMode mode, Material* material, float points[9]);
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void lovrGraphicsPlane(DrawMode mode, Material* material, mat4 transform);
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void lovrGraphicsPlaneFullscreen(Texture* texture);
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void lovrGraphicsBox(DrawMode mode, Material* material, mat4 transform);
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void lovrGraphicsArc(DrawMode mode, ArcMode, Material* material, mat4 transform, float theta1, float theta2, int segments);
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void lovrGraphicsCircle(DrawMode mode, Material* material, mat4 transform, int segments);
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void lovrGraphicsCylinder(Material* material, float x1, float y1, float z1, float x2, float y2, float z2, float r1, float r2, bool capped, int segments);
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void lovrGraphicsSphere(Material* material, mat4 transform, int segments);
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void lovrGraphicsSkybox(Texture* texture, 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);
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void lovrGraphicsStencil(StencilAction action, int replaceValue, StencilCallback callback, void* userdata);
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// Internal State
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VertexPointer lovrGraphicsGetVertexPointer(uint32_t capacity);
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void lovrGraphicsPushDisplay(int framebuffer, float* projections, float* views, int* viewport);
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void lovrGraphicsPopDisplay();
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void lovrGraphicsSetViewport(int x, int y, int w, int h);
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void lovrGraphicsBindFramebuffer(int framebuffer);
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Texture* lovrGraphicsGetTexture(int slot);
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void lovrGraphicsBindTexture(Texture* texture, TextureType type, int slot);
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Material* lovrGraphicsGetDefaultMaterial();
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void lovrGraphicsSetDefaultShader(DefaultShader defaultShader);
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Shader* lovrGraphicsGetActiveShader();
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void lovrGraphicsUseProgram(uint32_t program);
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void lovrGraphicsBindVertexArray(uint32_t vao);
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void lovrGraphicsBindVertexBuffer(uint32_t vbo);
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void lovrGraphicsBindIndexBuffer(uint32_t ibo);
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void lovrGraphicsDrawArrays(GLenum mode, size_t start, size_t count, int instances);
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void lovrGraphicsDrawElements(GLenum mode, size_t count, size_t indexSize, size_t offset, int instances);
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