Reworking the build system

1 files changed, 0 insertions, 1649 deletions

diff --git a/source/nanovg/nanovg_gl.c b/source/nanovg/nanovg_gl.c
deleted file mode 100644
index 9970842..0000000
--- a/source/nanovg/nanovg_gl.c
+++ /dev/null
@@ -1,1649 +0,0 @@
-//
-// Copyright (c) 2009-2013 Mikko Mononen memon@inside.org
-//
-// This software is provided 'as-is', without any express or implied
-// warranty.  In no event will the authors be held liable for any damages
-// arising from the use of this software.
-// Permission is granted to anyone to use this software for any purpose,
-// including commercial applications, and to alter it and redistribute it
-// freely, subject to the following restrictions:
-// 1. The origin of this software must not be misrepresented; you must not
-//    claim that you wrote the original software. If you use this software
-//    in a product, an acknowledgment in the product documentation would be
-//    appreciated but is not required.
-// 2. Altered source versions must be plainly marked as such, and must not be
-//    misrepresented as being the original software.
-// 3. This notice may not be removed or altered from any source distribution.
-//
-
-#if defined(NANOVG_GL2) + defined(NANOVG_GL3) + defined(NANOVG_GLES2) + defined(NANOVG_GLES3) != 1
-#error Define exactly one of NANOVG_GL2, NANOVG_GL3, NANOVG_GLES2, NANOVG_GLES3
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <math.h>
-
-#ifdef NANOVG_USE_GLEW
-#  include <GL/glew.h>
-static int glew_initialized = 0;
-#endif
-
-#ifdef NANOVG_GLES2
-#  include <GLES2/gl2.h>
-#  include <GLES2/gl2ext.h>
-#endif
-
-#ifdef NANOVG_GLES3
-#  include <GLES3/gl3.h>
-#endif
-
-#if defined(NANOVG_GL2) || defined(NANOVG_GL3)
-#include <GL/gl.h>
-#endif
-
-#include "nanovg_gl.h"
-
-#if defined NANOVG_GL2
-//#  define NANOVG_GL2 1
-#elif defined NANOVG_GL3
-//#  define NANOVG_GL3 1
-#  define NANOVG_GL_USE_UNIFORMBUFFER 1
-#elif defined NANOVG_GLES2
-//#  define NANOVG_GLES2 1
-#elif defined NANOVG_GLES3
-//#  define NANOVG_GLES3 1
-#endif
-
-#define NANOVG_GL_USE_STATE_FILTER (1)
-
-enum GLNVGuniformLoc {
-	GLNVG_LOC_VIEWSIZE,
-	GLNVG_LOC_TEX,
-	GLNVG_LOC_FRAG,
-	GLNVG_MAX_LOCS
-};
-
-enum GLNVGshaderType {
-	NSVG_SHADER_FILLGRAD,
-	NSVG_SHADER_FILLIMG,
-	NSVG_SHADER_SIMPLE,
-	NSVG_SHADER_IMG
-};
-
-#if NANOVG_GL_USE_UNIFORMBUFFER
-enum GLNVGuniformBindings {
-	GLNVG_FRAG_BINDING = 0,
-};
-#endif
-
-struct GLNVGshader {
-	GLuint prog;
-	GLuint frag;
-	GLuint vert;
-	GLint loc[GLNVG_MAX_LOCS];
-};
-typedef struct GLNVGshader GLNVGshader;
-
-struct GLNVGtexture {
-	int id;
-	GLuint tex;
-	int width, height;
-	int type;
-	int flags;
-};
-typedef struct GLNVGtexture GLNVGtexture;
-
-struct GLNVGblend
-{
-	GLenum srcRGB;
-	GLenum dstRGB;
-	GLenum srcAlpha;
-	GLenum dstAlpha;
-};
-typedef struct GLNVGblend GLNVGblend;
-
-enum GLNVGcallType {
-	GLNVG_NONE = 0,
-	GLNVG_FILL,
-	GLNVG_CONVEXFILL,
-	GLNVG_STROKE,
-	GLNVG_TRIANGLES,
-};
-
-struct GLNVGcall {
-	int type;
-	int image;
-	int pathOffset;
-	int pathCount;
-	int triangleOffset;
-	int triangleCount;
-	int uniformOffset;
-	GLNVGblend blendFunc;
-};
-typedef struct GLNVGcall GLNVGcall;
-
-struct GLNVGpath {
-	int fillOffset;
-	int fillCount;
-	int strokeOffset;
-	int strokeCount;
-};
-typedef struct GLNVGpath GLNVGpath;
-
-struct GLNVGfragUniforms {
-	#if NANOVG_GL_USE_UNIFORMBUFFER
-		float scissorMat[12]; // matrices are actually 3 vec4s
-		float paintMat[12];
-		struct NVGcolor innerCol;
-		struct NVGcolor outerCol;
-		float scissorExt[2];
-		float scissorScale[2];
-		float extent[2];
-		float radius;
-		float feather;
-		float strokeMult;
-		float strokeThr;
-		int texType;
-		int type;
-	#else
-		// note: after modifying layout or size of uniform array,
-		// don't forget to also update the fragment shader source!
-		#define NANOVG_GL_UNIFORMARRAY_SIZE 11
-		union {
-			struct {
-				float scissorMat[12]; // matrices are actually 3 vec4s
-				float paintMat[12];
-				struct NVGcolor innerCol;
-				struct NVGcolor outerCol;
-				float scissorExt[2];
-				float scissorScale[2];
-				float extent[2];
-				float radius;
-				float feather;
-				float strokeMult;
-				float strokeThr;
-				float texType;
-				float type;
-			};
-			float uniformArray[NANOVG_GL_UNIFORMARRAY_SIZE][4];
-		};
-	#endif
-};
-typedef struct GLNVGfragUniforms GLNVGfragUniforms;
-
-struct GLNVGcontext {
-	GLNVGshader shader;
-	GLNVGtexture* textures;
-	float view[2];
-	int ntextures;
-	int ctextures;
-	int textureId;
-	GLuint vertBuf;
-#if defined NANOVG_GL3
-	GLuint vertArr;
-#endif
-#if NANOVG_GL_USE_UNIFORMBUFFER
-	GLuint fragBuf;
-#endif
-	int fragSize;
-	int flags;
-
-	// Per frame buffers
-	GLNVGcall* calls;
-	int ccalls;
-	int ncalls;
-	GLNVGpath* paths;
-	int cpaths;
-	int npaths;
-	struct NVGvertex* verts;
-	int cverts;
-	int nverts;
-	unsigned char* uniforms;
-	int cuniforms;
-	int nuniforms;
-
-	// cached state
-	#if NANOVG_GL_USE_STATE_FILTER
-	GLuint boundTexture;
-	GLuint stencilMask;
-	GLenum stencilFunc;
-	GLint stencilFuncRef;
-	GLuint stencilFuncMask;
-	GLNVGblend blendFunc;
-	#endif
-
-	int dummyTex;
-};
-typedef struct GLNVGcontext GLNVGcontext;
-
-static int glnvg__maxi(int a, int b) { return a > b ? a : b; }
-
-#ifdef NANOVG_GLES2
-static unsigned int glnvg__nearestPow2(unsigned int num)
-{
-	unsigned n = num > 0 ? num - 1 : 0;
-	n |= n >> 1;
-	n |= n >> 2;
-	n |= n >> 4;
-	n |= n >> 8;
-	n |= n >> 16;
-	n++;
-	return n;
-}
-#endif
-
-static void glnvg__bindTexture(GLNVGcontext* gl, GLuint tex)
-{
-#if NANOVG_GL_USE_STATE_FILTER
-	if (gl->boundTexture != tex) {
-		gl->boundTexture = tex;
-		glBindTexture(GL_TEXTURE_2D, tex);
-	}
-#else
-	glBindTexture(GL_TEXTURE_2D, tex);
-#endif
-}
-
-static void glnvg__stencilMask(GLNVGcontext* gl, GLuint mask)
-{
-#if NANOVG_GL_USE_STATE_FILTER
-	if (gl->stencilMask != mask) {
-		gl->stencilMask = mask;
-		glStencilMask(mask);
-	}
-#else
-	glStencilMask(mask);
-#endif
-}
-
-static void glnvg__stencilFunc(GLNVGcontext* gl, GLenum func, GLint ref, GLuint mask)
-{
-#if NANOVG_GL_USE_STATE_FILTER
-	if ((gl->stencilFunc != func) ||
-		(gl->stencilFuncRef != ref) ||
-		(gl->stencilFuncMask != mask)) {
-
-		gl->stencilFunc = func;
-		gl->stencilFuncRef = ref;
-		gl->stencilFuncMask = mask;
-		glStencilFunc(func, ref, mask);
-	}
-#else
-	glStencilFunc(func, ref, mask);
-#endif
-}
-static void glnvg__blendFuncSeparate(GLNVGcontext* gl, const GLNVGblend* blend)
-{
-#if NANOVG_GL_USE_STATE_FILTER
-	if ((gl->blendFunc.srcRGB != blend->srcRGB) ||
-		(gl->blendFunc.dstRGB != blend->dstRGB) ||
-		(gl->blendFunc.srcAlpha != blend->srcAlpha) ||
-		(gl->blendFunc.dstAlpha != blend->dstAlpha)) {
-
-		gl->blendFunc = *blend;
-		glBlendFuncSeparate(blend->srcRGB, blend->dstRGB, blend->srcAlpha,blend->dstAlpha);
-	}
-#else
-	glBlendFuncSeparate(blend->srcRGB, blend->dstRGB, blend->srcAlpha,blend->dstAlpha);
-#endif
-}
-
-static GLNVGtexture* glnvg__allocTexture(GLNVGcontext* gl)
-{
-	GLNVGtexture* tex = NULL;
-	int i;
-
-	for (i = 0; i < gl->ntextures; i++) {
-		if (gl->textures[i].id == 0) {
-			tex = &gl->textures[i];
-			break;
-		}
-	}
-	if (tex == NULL) {
-		if (gl->ntextures+1 > gl->ctextures) {
-			GLNVGtexture* textures;
-			int ctextures = glnvg__maxi(gl->ntextures+1, 4) +  gl->ctextures/2; // 1.5x Overallocate
-			textures = (GLNVGtexture*)realloc(gl->textures, sizeof(GLNVGtexture)*ctextures);
-			if (textures == NULL) return NULL;
-			gl->textures = textures;
-			gl->ctextures = ctextures;
-		}
-		tex = &gl->textures[gl->ntextures++];
-	}
-
-	memset(tex, 0, sizeof(*tex));
-	tex->id = ++gl->textureId;
-
-	return tex;
-}
-
-static GLNVGtexture* glnvg__findTexture(GLNVGcontext* gl, int id)
-{
-	int i;
-	for (i = 0; i < gl->ntextures; i++)
-		if (gl->textures[i].id == id)
-			return &gl->textures[i];
-	return NULL;
-}
-
-static int glnvg__deleteTexture(GLNVGcontext* gl, int id)
-{
-	int i;
-	for (i = 0; i < gl->ntextures; i++) {
-		if (gl->textures[i].id == id) {
-			if (gl->textures[i].tex != 0 && (gl->textures[i].flags & NVG_IMAGE_NODELETE) == 0)
-				glDeleteTextures(1, &gl->textures[i].tex);
-			memset(&gl->textures[i], 0, sizeof(gl->textures[i]));
-			return 1;
-		}
-	}
-	return 0;
-}
-
-static void glnvg__dumpShaderError(GLuint shader, const char* name, const char* type)
-{
-	GLchar str[512+1];
-	GLsizei len = 0;
-	glGetShaderInfoLog(shader, 512, &len, str);
-	if (len > 512) len = 512;
-	str[len] = '\0';
-	printf("Shader %s/%s error:\n%s\n", name, type, str);
-}
-
-static void glnvg__dumpProgramError(GLuint prog, const char* name)
-{
-	GLchar str[512+1];
-	GLsizei len = 0;
-	glGetProgramInfoLog(prog, 512, &len, str);
-	if (len > 512) len = 512;
-	str[len] = '\0';
-	printf("Program %s error:\n%s\n", name, str);
-}
-
-static void glnvg__checkError(GLNVGcontext* gl, const char* str)
-{
-	GLenum err;
-	if ((gl->flags & NVG_DEBUG) == 0) return;
-	err = glGetError();
-	if (err != GL_NO_ERROR) {
-		printf("Error %08x after %s\n", err, str);
-		return;
-	}
-}
-
-static int glnvg__createShader(GLNVGshader* shader, const char* name, const char* header, const char* opts, const char* vshader, const char* fshader)
-{
-	GLint status;
-	GLuint prog, vert, frag;
-	const char* str[3];
-	str[0] = header;
-	str[1] = opts != NULL ? opts : "";
-
-	memset(shader, 0, sizeof(*shader));
-
-	prog = glCreateProgram();
-	vert = glCreateShader(GL_VERTEX_SHADER);
-	frag = glCreateShader(GL_FRAGMENT_SHADER);
-	str[2] = vshader;
-	glShaderSource(vert, 3, str, 0);
-	str[2] = fshader;
-	glShaderSource(frag, 3, str, 0);
-
-	glCompileShader(vert);
-	glGetShaderiv(vert, GL_COMPILE_STATUS, &status);
-	if (status != GL_TRUE) {
-		glnvg__dumpShaderError(vert, name, "vert");
-		return 0;
-	}
-
-	glCompileShader(frag);
-	glGetShaderiv(frag, GL_COMPILE_STATUS, &status);
-	if (status != GL_TRUE) {
-		glnvg__dumpShaderError(frag, name, "frag");
-		return 0;
-	}
-
-	glAttachShader(prog, vert);
-	glAttachShader(prog, frag);
-
-	glBindAttribLocation(prog, 0, "vertex");
-	glBindAttribLocation(prog, 1, "tcoord");
-
-	glLinkProgram(prog);
-	glGetProgramiv(prog, GL_LINK_STATUS, &status);
-	if (status != GL_TRUE) {
-		glnvg__dumpProgramError(prog, name);
-		return 0;
-	}
-
-	shader->prog = prog;
-	shader->vert = vert;
-	shader->frag = frag;
-
-	return 1;
-}
-
-static void glnvg__deleteShader(GLNVGshader* shader)
-{
-	if (shader->prog != 0)
-		glDeleteProgram(shader->prog);
-	if (shader->vert != 0)
-		glDeleteShader(shader->vert);
-	if (shader->frag != 0)
-		glDeleteShader(shader->frag);
-}
-
-static void glnvg__getUniforms(GLNVGshader* shader)
-{
-	shader->loc[GLNVG_LOC_VIEWSIZE] = glGetUniformLocation(shader->prog, "viewSize");
-	shader->loc[GLNVG_LOC_TEX] = glGetUniformLocation(shader->prog, "tex");
-
-#if NANOVG_GL_USE_UNIFORMBUFFER
-	shader->loc[GLNVG_LOC_FRAG] = glGetUniformBlockIndex(shader->prog, "frag");
-#else
-	shader->loc[GLNVG_LOC_FRAG] = glGetUniformLocation(shader->prog, "frag");
-#endif
-}
-
-static int glnvg__renderCreateTexture(void* uptr, int type, int w, int h, int imageFlags, const unsigned char* data);
-
-static int glnvg__renderCreate(void* uptr)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	int align = 4;
-
-	// TODO: mediump float may not be enough for GLES2 in iOS.
-	// see the following discussion: https://github.com/memononen/nanovg/issues/46
-	static const char* shaderHeader =
-#if defined NANOVG_GL2
-		"#define NANOVG_GL2 1\n"
-#elif defined NANOVG_GL3
-		"#version 150 core\n"
-		"#define NANOVG_GL3 1\n"
-#elif defined NANOVG_GLES2
-		"#version 100\n"
-		"#define NANOVG_GL2 1\n"
-#elif defined NANOVG_GLES3
-		"#version 300 es\n"
-		"#define NANOVG_GL3 1\n"
-#endif
-
-#if NANOVG_GL_USE_UNIFORMBUFFER
-	"#define USE_UNIFORMBUFFER 1\n"
-#else
-	"#define UNIFORMARRAY_SIZE 11\n"
-#endif
-	"\n";
-
-	static const char* fillVertShader =
-		"#ifdef NANOVG_GL3\n"
-		"	uniform vec2 viewSize;\n"
-		"	in vec2 vertex;\n"
-		"	in vec2 tcoord;\n"
-		"	out vec2 ftcoord;\n"
-		"	out vec2 fpos;\n"
-		"#else\n"
-		"	uniform vec2 viewSize;\n"
-		"	attribute vec2 vertex;\n"
-		"	attribute vec2 tcoord;\n"
-		"	varying vec2 ftcoord;\n"
-		"	varying vec2 fpos;\n"
-		"#endif\n"
-		"void main(void) {\n"
-		"	ftcoord = tcoord;\n"
-		"	fpos = vertex;\n"
-		"	gl_Position = vec4(2.0*vertex.x/viewSize.x - 1.0, 1.0 - 2.0*vertex.y/viewSize.y, 0, 1);\n"
-		"}\n";
-
-	static const char* fillFragShader =
-		"#ifdef GL_ES\n"
-		"#if defined(GL_FRAGMENT_PRECISION_HIGH) || defined(NANOVG_GL3)\n"
-		" precision highp float;\n"
-		"#else\n"
-		" precision mediump float;\n"
-		"#endif\n"
-		"#endif\n"
-		"#ifdef NANOVG_GL3\n"
-		"#ifdef USE_UNIFORMBUFFER\n"
-		"	layout(std140) uniform frag {\n"
-		"		mat3 scissorMat;\n"
-		"		mat3 paintMat;\n"
-		"		vec4 innerCol;\n"
-		"		vec4 outerCol;\n"
-		"		vec2 scissorExt;\n"
-		"		vec2 scissorScale;\n"
-		"		vec2 extent;\n"
-		"		float radius;\n"
-		"		float feather;\n"
-		"		float strokeMult;\n"
-		"		float strokeThr;\n"
-		"		int texType;\n"
-		"		int type;\n"
-		"	};\n"
-		"#else\n" // NANOVG_GL3 && !USE_UNIFORMBUFFER
-		"	uniform vec4 frag[UNIFORMARRAY_SIZE];\n"
-		"#endif\n"
-		"	uniform sampler2D tex;\n"
-		"	in vec2 ftcoord;\n"
-		"	in vec2 fpos;\n"
-		"	out vec4 outColor;\n"
-		"#else\n" // !NANOVG_GL3
-		"	uniform vec4 frag[UNIFORMARRAY_SIZE];\n"
-		"	uniform sampler2D tex;\n"
-		"	varying vec2 ftcoord;\n"
-		"	varying vec2 fpos;\n"
-		"#endif\n"
-		"#ifndef USE_UNIFORMBUFFER\n"
-		"	#define scissorMat mat3(frag[0].xyz, frag[1].xyz, frag[2].xyz)\n"
-		"	#define paintMat mat3(frag[3].xyz, frag[4].xyz, frag[5].xyz)\n"
-		"	#define innerCol frag[6]\n"
-		"	#define outerCol frag[7]\n"
-		"	#define scissorExt frag[8].xy\n"
-		"	#define scissorScale frag[8].zw\n"
-		"	#define extent frag[9].xy\n"
-		"	#define radius frag[9].z\n"
-		"	#define feather frag[9].w\n"
-		"	#define strokeMult frag[10].x\n"
-		"	#define strokeThr frag[10].y\n"
-		"	#define texType int(frag[10].z)\n"
-		"	#define type int(frag[10].w)\n"
-		"#endif\n"
-		"\n"
-		"float sdroundrect(vec2 pt, vec2 ext, float rad) {\n"
-		"	vec2 ext2 = ext - vec2(rad,rad);\n"
-		"	vec2 d = abs(pt) - ext2;\n"
-		"	return min(max(d.x,d.y),0.0) + length(max(d,0.0)) - rad;\n"
-		"}\n"
-		"\n"
-		"// Scissoring\n"
-		"float scissorMask(vec2 p) {\n"
-		"	vec2 sc = (abs((scissorMat * vec3(p,1.0)).xy) - scissorExt);\n"
-		"	sc = vec2(0.5,0.5) - sc * scissorScale;\n"
-		"	return clamp(sc.x,0.0,1.0) * clamp(sc.y,0.0,1.0);\n"
-		"}\n"
-		"#ifdef EDGE_AA\n"
-		"// Stroke - from [0..1] to clipped pyramid, where the slope is 1px.\n"
-		"float strokeMask() {\n"
-		"	return min(1.0, (1.0-abs(ftcoord.x*2.0-1.0))*strokeMult) * min(1.0, ftcoord.y);\n"
-		"}\n"
-		"#endif\n"
-		"\n"
-		"void main(void) {\n"
-		"   vec4 result;\n"
-		"	float scissor = scissorMask(fpos);\n"
-		"#ifdef EDGE_AA\n"
-		"	float strokeAlpha = strokeMask();\n"
-		"	if (strokeAlpha < strokeThr) discard;\n"
-		"#else\n"
-		"	float strokeAlpha = 1.0;\n"
-		"#endif\n"
-		"	if (type == 0) {			// Gradient\n"
-		"		// Calculate gradient color using box gradient\n"
-		"		vec2 pt = (paintMat * vec3(fpos,1.0)).xy;\n"
-		"		float d = clamp((sdroundrect(pt, extent, radius) + feather*0.5) / feather, 0.0, 1.0);\n"
-		"		vec4 color = mix(innerCol,outerCol,d);\n"
-		"		// Combine alpha\n"
-		"		color *= strokeAlpha * scissor;\n"
-		"		result = color;\n"
-		"	} else if (type == 1) {		// Image\n"
-		"		// Calculate color fron texture\n"
-		"		vec2 pt = (paintMat * vec3(fpos,1.0)).xy / extent;\n"
-		"#ifdef NANOVG_GL3\n"
-		"		vec4 color = texture(tex, pt);\n"
-		"#else\n"
-		"		vec4 color = texture2D(tex, pt);\n"
-		"#endif\n"
-		"		if (texType == 1) color = vec4(color.xyz*color.w,color.w);"
-		"		if (texType == 2) color = vec4(color.x);"
-		"		// Apply color tint and alpha.\n"
-		"		color *= innerCol;\n"
-		"		// Combine alpha\n"
-		"		color *= strokeAlpha * scissor;\n"
-		"		result = color;\n"
-		"	} else if (type == 2) {		// Stencil fill\n"
-		"		result = vec4(1,1,1,1);\n"
-		"	} else if (type == 3) {		// Textured tris\n"
-		"#ifdef NANOVG_GL3\n"
-		"		vec4 color = texture(tex, ftcoord);\n"
-		"#else\n"
-		"		vec4 color = texture2D(tex, ftcoord);\n"
-		"#endif\n"
-		"		if (texType == 1) color = vec4(color.xyz*color.w,color.w);"
-		"		if (texType == 2) color = vec4(color.x);"
-		"		color *= scissor;\n"
-		"		result = color * innerCol;\n"
-		"	}\n"
-		"#ifdef NANOVG_GL3\n"
-		"	outColor = result;\n"
-		"#else\n"
-		"	gl_FragColor = result;\n"
-		"#endif\n"
-		"}\n";
-
-	glnvg__checkError(gl, "init");
-
-	if (gl->flags & NVG_ANTIALIAS) {
-		if (glnvg__createShader(&gl->shader, "shader", shaderHeader, "#define EDGE_AA 1\n", fillVertShader, fillFragShader) == 0)
-			return 0;
-	} else {
-		if (glnvg__createShader(&gl->shader, "shader", shaderHeader, NULL, fillVertShader, fillFragShader) == 0)
-			return 0;
-	}
-
-	glnvg__checkError(gl, "uniform locations");
-	glnvg__getUniforms(&gl->shader);
-
-	// Create dynamic vertex array
-#if defined NANOVG_GL3
-	glGenVertexArrays(1, &gl->vertArr);
-#endif
-	glGenBuffers(1, &gl->vertBuf);
-
-#if NANOVG_GL_USE_UNIFORMBUFFER
-	// Create UBOs
-	glUniformBlockBinding(gl->shader.prog, gl->shader.loc[GLNVG_LOC_FRAG], GLNVG_FRAG_BINDING);
-	glGenBuffers(1, &gl->fragBuf);
-	glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &align);
-#endif
-	gl->fragSize = sizeof(GLNVGfragUniforms) + align - sizeof(GLNVGfragUniforms) % align;
-
-	// Some platforms does not allow to have samples to unset textures.
-	// Create empty one which is bound when there's no texture specified.
-	gl->dummyTex = glnvg__renderCreateTexture(gl, NVG_TEXTURE_ALPHA, 1, 1, 0, NULL);
-
-	glnvg__checkError(gl, "create done");
-
-	glFinish();
-
-	return 1;
-}
-
-static int glnvg__renderCreateTexture(void* uptr, int type, int w, int h, int imageFlags, const unsigned char* data)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	GLNVGtexture* tex = glnvg__allocTexture(gl);
-
-	if (tex == NULL) return 0;
-
-#ifdef NANOVG_GLES2
-	// Check for non-power of 2.
-	if (glnvg__nearestPow2(w) != (unsigned int)w || glnvg__nearestPow2(h) != (unsigned int)h) {
-		// No repeat
-		if ((imageFlags & NVG_IMAGE_REPEATX) != 0 || (imageFlags & NVG_IMAGE_REPEATY) != 0) {
-			printf("Repeat X/Y is not supported for non power-of-two textures (%d x %d)\n", w, h);
-			imageFlags &= ~(NVG_IMAGE_REPEATX | NVG_IMAGE_REPEATY);
-		}
-		// No mips.
-		if (imageFlags & NVG_IMAGE_GENERATE_MIPMAPS) {
-			printf("Mip-maps is not support for non power-of-two textures (%d x %d)\n", w, h);
-			imageFlags &= ~NVG_IMAGE_GENERATE_MIPMAPS;
-		}
-	}
-#endif
-
-	glGenTextures(1, &tex->tex);
-	tex->width = w;
-	tex->height = h;
-	tex->type = type;
-	tex->flags = imageFlags;
-	glnvg__bindTexture(gl, tex->tex);
-
-	glPixelStorei(GL_UNPACK_ALIGNMENT,1);
-#ifndef NANOVG_GLES2
-	glPixelStorei(GL_UNPACK_ROW_LENGTH, tex->width);
-	glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
-	glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
-#endif
-
-#if defined (NANOVG_GL2)
-	// GL 1.4 and later has support for generating mipmaps using a tex parameter.
-	if (imageFlags & NVG_IMAGE_GENERATE_MIPMAPS) {
-		glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
-	}
-#endif
-
-	if (type == NVG_TEXTURE_RGBA)
-		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
-	else
-#if defined(NANOVG_GLES2) || defined (NANOVG_GL2)
-		glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, w, h, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, data);
-#elif defined(NANOVG_GLES3)
-		glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, w, h, 0, GL_RED, GL_UNSIGNED_BYTE, data);
-#else
-		glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, w, h, 0, GL_RED, GL_UNSIGNED_BYTE, data);
-#endif
-
-	if (imageFlags & NVG_IMAGE_GENERATE_MIPMAPS) {
-		if (imageFlags & NVG_IMAGE_NEAREST) {
-			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
-		} else {
-			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-		}
-	} else {
-		if (imageFlags & NVG_IMAGE_NEAREST) {
-			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-		} else {
-			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-		}
-	}
-
-	if (imageFlags & NVG_IMAGE_NEAREST) {
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-	} else {
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-	}
-
-	if (imageFlags & NVG_IMAGE_REPEATX)
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-	else
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-
-	if (imageFlags & NVG_IMAGE_REPEATY)
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-	else
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-
-	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
-#ifndef NANOVG_GLES2
-	glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
-	glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
-	glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
-#endif
-
-	// The new way to build mipmaps on GLES and GL3
-#if !defined(NANOVG_GL2)
-	if (imageFlags & NVG_IMAGE_GENERATE_MIPMAPS) {
-		glGenerateMipmap(GL_TEXTURE_2D);
-	}
-#endif
-
-	glnvg__checkError(gl, "create tex");
-	glnvg__bindTexture(gl, 0);
-
-	return tex->id;
-}
-
-
-static int glnvg__renderDeleteTexture(void* uptr, int image)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	return glnvg__deleteTexture(gl, image);
-}
-
-static int glnvg__renderUpdateTexture(void* uptr, int image, int x, int y, int w, int h, const unsigned char* data)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	GLNVGtexture* tex = glnvg__findTexture(gl, image);
-
-	if (tex == NULL) return 0;
-	glnvg__bindTexture(gl, tex->tex);
-
-	glPixelStorei(GL_UNPACK_ALIGNMENT,1);
-
-#ifndef NANOVG_GLES2
-	glPixelStorei(GL_UNPACK_ROW_LENGTH, tex->width);
-	glPixelStorei(GL_UNPACK_SKIP_PIXELS, x);
-	glPixelStorei(GL_UNPACK_SKIP_ROWS, y);
-#else
-	// No support for all of skip, need to update a whole row at a time.
-	if (tex->type == NVG_TEXTURE_RGBA)
-		data += y*tex->width*4;
-	else
-		data += y*tex->width;
-	x = 0;
-	w = tex->width;
-#endif
-
-	if (tex->type == NVG_TEXTURE_RGBA)
-		glTexSubImage2D(GL_TEXTURE_2D, 0, x,y, w,h, GL_RGBA, GL_UNSIGNED_BYTE, data);
-	else
-#if defined(NANOVG_GLES2) || defined(NANOVG_GL2)
-		glTexSubImage2D(GL_TEXTURE_2D, 0, x,y, w,h, GL_LUMINANCE, GL_UNSIGNED_BYTE, data);
-#else
-		glTexSubImage2D(GL_TEXTURE_2D, 0, x,y, w,h, GL_RED, GL_UNSIGNED_BYTE, data);
-#endif
-
-	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
-#ifndef NANOVG_GLES2
-	glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
-	glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
-	glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
-#endif
-
-	glnvg__bindTexture(gl, 0);
-
-	return 1;
-}
-
-static int glnvg__renderGetTextureSize(void* uptr, int image, int* w, int* h)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	GLNVGtexture* tex = glnvg__findTexture(gl, image);
-	if (tex == NULL) return 0;
-	*w = tex->width;
-	*h = tex->height;
-	return 1;
-}
-
-static void glnvg__xformToMat3x4(float* m3, float* t)
-{
-	m3[0] = t[0];
-	m3[1] = t[1];
-	m3[2] = 0.0f;
-	m3[3] = 0.0f;
-	m3[4] = t[2];
-	m3[5] = t[3];
-	m3[6] = 0.0f;
-	m3[7] = 0.0f;
-	m3[8] = t[4];
-	m3[9] = t[5];
-	m3[10] = 1.0f;
-	m3[11] = 0.0f;
-}
-
-static NVGcolor glnvg__premulColor(NVGcolor c)
-{
-	c.r *= c.a;
-	c.g *= c.a;
-	c.b *= c.a;
-	return c;
-}
-
-static int glnvg__convertPaint(GLNVGcontext* gl, GLNVGfragUniforms* frag, NVGpaint* paint,
-							   NVGscissor* scissor, float width, float fringe, float strokeThr)
-{
-	GLNVGtexture* tex = NULL;
-	float invxform[6];
-
-	memset(frag, 0, sizeof(*frag));
-
-	frag->innerCol = glnvg__premulColor(paint->innerColor);
-	frag->outerCol = glnvg__premulColor(paint->outerColor);
-
-	if (scissor->extent[0] < -0.5f || scissor->extent[1] < -0.5f) {
-		memset(frag->scissorMat, 0, sizeof(frag->scissorMat));
-		frag->scissorExt[0] = 1.0f;
-		frag->scissorExt[1] = 1.0f;
-		frag->scissorScale[0] = 1.0f;
-		frag->scissorScale[1] = 1.0f;
-	} else {
-		nvgTransformInverse(invxform, scissor->xform);
-		glnvg__xformToMat3x4(frag->scissorMat, invxform);
-		frag->scissorExt[0] = scissor->extent[0];
-		frag->scissorExt[1] = scissor->extent[1];
-		frag->scissorScale[0] = sqrtf(scissor->xform[0]*scissor->xform[0] + scissor->xform[2]*scissor->xform[2]) / fringe;
-		frag->scissorScale[1] = sqrtf(scissor->xform[1]*scissor->xform[1] + scissor->xform[3]*scissor->xform[3]) / fringe;
-	}
-
-	memcpy(frag->extent, paint->extent, sizeof(frag->extent));
-	frag->strokeMult = (width*0.5f + fringe*0.5f) / fringe;
-	frag->strokeThr = strokeThr;
-
-	if (paint->image != 0) {
-		tex = glnvg__findTexture(gl, paint->image);
-		if (tex == NULL) return 0;
-		if ((tex->flags & NVG_IMAGE_FLIPY) != 0) {
-			float m1[6], m2[6];
-			nvgTransformTranslate(m1, 0.0f, frag->extent[1] * 0.5f);
-			nvgTransformMultiply(m1, paint->xform);
-			nvgTransformScale(m2, 1.0f, -1.0f);
-			nvgTransformMultiply(m2, m1);
-			nvgTransformTranslate(m1, 0.0f, -frag->extent[1] * 0.5f);
-			nvgTransformMultiply(m1, m2);
-			nvgTransformInverse(invxform, m1);
-		} else {
-			nvgTransformInverse(invxform, paint->xform);
-		}
-		frag->type = NSVG_SHADER_FILLIMG;
-
-		#if NANOVG_GL_USE_UNIFORMBUFFER
-		if (tex->type == NVG_TEXTURE_RGBA)
-			frag->texType = (tex->flags & NVG_IMAGE_PREMULTIPLIED) ? 0 : 1;
-		else
-			frag->texType = 2;
-		#else
-		if (tex->type == NVG_TEXTURE_RGBA)
-			frag->texType = (tex->flags & NVG_IMAGE_PREMULTIPLIED) ? 0.0f : 1.0f;
-		else
-			frag->texType = 2.0f;
-		#endif
-//		printf("frag->texType = %d\n", frag->texType);
-	} else {
-		frag->type = NSVG_SHADER_FILLGRAD;
-		frag->radius = paint->radius;
-		frag->feather = paint->feather;
-		nvgTransformInverse(invxform, paint->xform);
-	}
-
-	glnvg__xformToMat3x4(frag->paintMat, invxform);
-
-	return 1;
-}
-
-static GLNVGfragUniforms* nvg__fragUniformPtr(GLNVGcontext* gl, int i);
-
-static void glnvg__setUniforms(GLNVGcontext* gl, int uniformOffset, int image)
-{
-	GLNVGtexture* tex = NULL;
-#if NANOVG_GL_USE_UNIFORMBUFFER
-	glBindBufferRange(GL_UNIFORM_BUFFER, GLNVG_FRAG_BINDING, gl->fragBuf, uniformOffset, sizeof(GLNVGfragUniforms));
-#else
-	GLNVGfragUniforms* frag = nvg__fragUniformPtr(gl, uniformOffset);
-	glUniform4fv(gl->shader.loc[GLNVG_LOC_FRAG], NANOVG_GL_UNIFORMARRAY_SIZE, &(frag->uniformArray[0][0]));
-#endif
-
-	if (image != 0) {
-		tex = glnvg__findTexture(gl, image);
-	}
-	// If no image is set, use empty texture
-	if (tex == NULL) {
-		tex = glnvg__findTexture(gl, gl->dummyTex);
-	}
-	glnvg__bindTexture(gl, tex != NULL ? tex->tex : 0);
-	glnvg__checkError(gl, "tex paint tex");
-}
-
-static void glnvg__renderViewport(void* uptr, float width, float height, float devicePixelRatio)
-{
-	NVG_NOTUSED(devicePixelRatio);
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	gl->view[0] = width;
-	gl->view[1] = height;
-}
-
-static void glnvg__fill(GLNVGcontext* gl, GLNVGcall* call)
-{
-	GLNVGpath* paths = &gl->paths[call->pathOffset];
-	int i, npaths = call->pathCount;
-
-	// Draw shapes
-	glEnable(GL_STENCIL_TEST);
-	glnvg__stencilMask(gl, 0xff);
-	glnvg__stencilFunc(gl, GL_ALWAYS, 0, 0xff);
-	glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
-
-	// set bindpoint for solid loc
-	glnvg__setUniforms(gl, call->uniformOffset, 0);
-	glnvg__checkError(gl, "fill simple");
-
-	glStencilOpSeparate(GL_FRONT, GL_KEEP, GL_KEEP, GL_INCR_WRAP);
-	glStencilOpSeparate(GL_BACK, GL_KEEP, GL_KEEP, GL_DECR_WRAP);
-	glDisable(GL_CULL_FACE);
-	for (i = 0; i < npaths; i++)
-		glDrawArrays(GL_TRIANGLE_FAN, paths[i].fillOffset, paths[i].fillCount);
-	glEnable(GL_CULL_FACE);
-
-	// Draw anti-aliased pixels
-	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-
-	glnvg__setUniforms(gl, call->uniformOffset + gl->fragSize, call->image);
-	glnvg__checkError(gl, "fill fill");
-
-	if (gl->flags & NVG_ANTIALIAS) {
-		glnvg__stencilFunc(gl, GL_EQUAL, 0x00, 0xff);
-		glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-		// Draw fringes
-		for (i = 0; i < npaths; i++)
-			glDrawArrays(GL_TRIANGLE_STRIP, paths[i].strokeOffset, paths[i].strokeCount);
-	}
-
-	// Draw fill
-	glnvg__stencilFunc(gl, GL_NOTEQUAL, 0x0, 0xff);
-	glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO);
-	glDrawArrays(GL_TRIANGLE_STRIP, call->triangleOffset, call->triangleCount);
-
-	glDisable(GL_STENCIL_TEST);
-}
-
-static void glnvg__convexFill(GLNVGcontext* gl, GLNVGcall* call)
-{
-	GLNVGpath* paths = &gl->paths[call->pathOffset];
-	int i, npaths = call->pathCount;
-
-	glnvg__setUniforms(gl, call->uniformOffset, call->image);
-	glnvg__checkError(gl, "convex fill");
-
-	for (i = 0; i < npaths; i++) {
-		glDrawArrays(GL_TRIANGLE_FAN, paths[i].fillOffset, paths[i].fillCount);
-		// Draw fringes
-		if (paths[i].strokeCount > 0) {
-			glDrawArrays(GL_TRIANGLE_STRIP, paths[i].strokeOffset, paths[i].strokeCount);
-		}
-	}
-}
-
-static void glnvg__stroke(GLNVGcontext* gl, GLNVGcall* call)
-{
-	GLNVGpath* paths = &gl->paths[call->pathOffset];
-	int npaths = call->pathCount, i;
-
-	if (gl->flags & NVG_STENCIL_STROKES) {
-
-		glEnable(GL_STENCIL_TEST);
-		glnvg__stencilMask(gl, 0xff);
-
-		// Fill the stroke base without overlap
-		glnvg__stencilFunc(gl, GL_EQUAL, 0x0, 0xff);
-		glStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
-		glnvg__setUniforms(gl, call->uniformOffset + gl->fragSize, call->image);
-		glnvg__checkError(gl, "stroke fill 0");
-		for (i = 0; i < npaths; i++)
-			glDrawArrays(GL_TRIANGLE_STRIP, paths[i].strokeOffset, paths[i].strokeCount);
-
-		// Draw anti-aliased pixels.
-		glnvg__setUniforms(gl, call->uniformOffset, call->image);
-		glnvg__stencilFunc(gl, GL_EQUAL, 0x00, 0xff);
-		glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-		for (i = 0; i < npaths; i++)
-			glDrawArrays(GL_TRIANGLE_STRIP, paths[i].strokeOffset, paths[i].strokeCount);
-
-		// Clear stencil buffer.
-		glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
-		glnvg__stencilFunc(gl, GL_ALWAYS, 0x0, 0xff);
-		glStencilOp(GL_ZERO, GL_ZERO, GL_ZERO);
-		glnvg__checkError(gl, "stroke fill 1");
-		for (i = 0; i < npaths; i++)
-			glDrawArrays(GL_TRIANGLE_STRIP, paths[i].strokeOffset, paths[i].strokeCount);
-		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-
-		glDisable(GL_STENCIL_TEST);
-
-//		glnvg__convertPaint(gl, nvg__fragUniformPtr(gl, call->uniformOffset + gl->fragSize), paint, scissor, strokeWidth, fringe, 1.0f - 0.5f/255.0f);
-
-	} else {
-		glnvg__setUniforms(gl, call->uniformOffset, call->image);
-		glnvg__checkError(gl, "stroke fill");
-		// Draw Strokes
-		for (i = 0; i < npaths; i++)
-			glDrawArrays(GL_TRIANGLE_STRIP, paths[i].strokeOffset, paths[i].strokeCount);
-	}
-}
-
-static void glnvg__triangles(GLNVGcontext* gl, GLNVGcall* call)
-{
-	glnvg__setUniforms(gl, call->uniformOffset, call->image);
-	glnvg__checkError(gl, "triangles fill");
-
-	glDrawArrays(GL_TRIANGLES, call->triangleOffset, call->triangleCount);
-}
-
-static void glnvg__renderCancel(void* uptr) {
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	gl->nverts = 0;
-	gl->npaths = 0;
-	gl->ncalls = 0;
-	gl->nuniforms = 0;
-}
-
-static GLenum glnvg_convertBlendFuncFactor(int factor)
-{
-	if (factor == NVG_ZERO)
-		return GL_ZERO;
-	if (factor == NVG_ONE)
-		return GL_ONE;
-	if (factor == NVG_SRC_COLOR)
-		return GL_SRC_COLOR;
-	if (factor == NVG_ONE_MINUS_SRC_COLOR)
-		return GL_ONE_MINUS_SRC_COLOR;
-	if (factor == NVG_DST_COLOR)
-		return GL_DST_COLOR;
-	if (factor == NVG_ONE_MINUS_DST_COLOR)
-		return GL_ONE_MINUS_DST_COLOR;
-	if (factor == NVG_SRC_ALPHA)
-		return GL_SRC_ALPHA;
-	if (factor == NVG_ONE_MINUS_SRC_ALPHA)
-		return GL_ONE_MINUS_SRC_ALPHA;
-	if (factor == NVG_DST_ALPHA)
-		return GL_DST_ALPHA;
-	if (factor == NVG_ONE_MINUS_DST_ALPHA)
-		return GL_ONE_MINUS_DST_ALPHA;
-	if (factor == NVG_SRC_ALPHA_SATURATE)
-		return GL_SRC_ALPHA_SATURATE;
-	return GL_INVALID_ENUM;
-}
-
-static GLNVGblend glnvg__blendCompositeOperation(NVGcompositeOperationState op)
-{
-	GLNVGblend blend;
-	blend.srcRGB = glnvg_convertBlendFuncFactor(op.srcRGB);
-	blend.dstRGB = glnvg_convertBlendFuncFactor(op.dstRGB);
-	blend.srcAlpha = glnvg_convertBlendFuncFactor(op.srcAlpha);
-	blend.dstAlpha = glnvg_convertBlendFuncFactor(op.dstAlpha);
-	if (blend.srcRGB == GL_INVALID_ENUM || blend.dstRGB == GL_INVALID_ENUM || blend.srcAlpha == GL_INVALID_ENUM || blend.dstAlpha == GL_INVALID_ENUM)
-	{
-		blend.srcRGB = GL_ONE;
-		blend.dstRGB = GL_ONE_MINUS_SRC_ALPHA;
-		blend.srcAlpha = GL_ONE;
-		blend.dstAlpha = GL_ONE_MINUS_SRC_ALPHA;
-	}
-	return blend;
-}
-
-static void glnvg__renderFlush(void* uptr)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	int i;
-
-	if (gl->ncalls > 0) {
-
-		// Setup require GL state.
-		glUseProgram(gl->shader.prog);
-
-		glEnable(GL_CULL_FACE);
-		glCullFace(GL_BACK);
-		glFrontFace(GL_CCW);
-		glEnable(GL_BLEND);
-		glDisable(GL_DEPTH_TEST);
-		glDisable(GL_SCISSOR_TEST);
-		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-		glStencilMask(0xffffffff);
-		glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-		glStencilFunc(GL_ALWAYS, 0, 0xffffffff);
-		glActiveTexture(GL_TEXTURE0);
-		glBindTexture(GL_TEXTURE_2D, 0);
-		#if NANOVG_GL_USE_STATE_FILTER
-		gl->boundTexture = 0;
-		gl->stencilMask = 0xffffffff;
-		gl->stencilFunc = GL_ALWAYS;
-		gl->stencilFuncRef = 0;
-		gl->stencilFuncMask = 0xffffffff;
-		gl->blendFunc.srcRGB = GL_INVALID_ENUM;
-		gl->blendFunc.srcAlpha = GL_INVALID_ENUM;
-		gl->blendFunc.dstRGB = GL_INVALID_ENUM;
-		gl->blendFunc.dstAlpha = GL_INVALID_ENUM;
-		#endif
-
-#if NANOVG_GL_USE_UNIFORMBUFFER
-		// Upload ubo for frag shaders
-		glBindBuffer(GL_UNIFORM_BUFFER, gl->fragBuf);
-		glBufferData(GL_UNIFORM_BUFFER, gl->nuniforms * gl->fragSize, gl->uniforms, GL_STREAM_DRAW);
-#endif
-
-		// Upload vertex data
-#if defined NANOVG_GL3
-		glBindVertexArray(gl->vertArr);
-#endif
-		glBindBuffer(GL_ARRAY_BUFFER, gl->vertBuf);
-		glBufferData(GL_ARRAY_BUFFER, gl->nverts * sizeof(NVGvertex), gl->verts, GL_STREAM_DRAW);
-		glEnableVertexAttribArray(0);
-		glEnableVertexAttribArray(1);
-		glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(NVGvertex), (const GLvoid*)(size_t)0);
-		glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(NVGvertex), (const GLvoid*)(0 + 2*sizeof(float)));
-
-		// Set view and texture just once per frame.
-		glUniform1i(gl->shader.loc[GLNVG_LOC_TEX], 0);
-		glUniform2fv(gl->shader.loc[GLNVG_LOC_VIEWSIZE], 1, gl->view);
-
-#if NANOVG_GL_USE_UNIFORMBUFFER
-		glBindBuffer(GL_UNIFORM_BUFFER, gl->fragBuf);
-#endif
-
-		for (i = 0; i < gl->ncalls; i++) {
-			GLNVGcall* call = &gl->calls[i];
-			glnvg__blendFuncSeparate(gl,&call->blendFunc);
-			if (call->type == GLNVG_FILL)
-				glnvg__fill(gl, call);
-			else if (call->type == GLNVG_CONVEXFILL)
-				glnvg__convexFill(gl, call);
-			else if (call->type == GLNVG_STROKE)
-				glnvg__stroke(gl, call);
-			else if (call->type == GLNVG_TRIANGLES)
-				glnvg__triangles(gl, call);
-		}
-
-		glDisableVertexAttribArray(0);
-		glDisableVertexAttribArray(1);
-#if defined NANOVG_GL3
-		glBindVertexArray(0);
-#endif
-		glDisable(GL_CULL_FACE);
-			glBindBuffer(GL_ARRAY_BUFFER, 0);
-		glUseProgram(0);
-		glnvg__bindTexture(gl, 0);
-	}
-
-	// Reset calls
-	gl->nverts = 0;
-	gl->npaths = 0;
-	gl->ncalls = 0;
-	gl->nuniforms = 0;
-}
-
-static int glnvg__maxVertCount(const NVGpath* paths, int npaths)
-{
-	int i, count = 0;
-	for (i = 0; i < npaths; i++) {
-		count += paths[i].nfill;
-		count += paths[i].nstroke;
-	}
-	return count;
-}
-
-static GLNVGcall* glnvg__allocCall(GLNVGcontext* gl)
-{
-	GLNVGcall* ret = NULL;
-	if (gl->ncalls+1 > gl->ccalls) {
-		GLNVGcall* calls;
-		int ccalls = glnvg__maxi(gl->ncalls+1, 128) + gl->ccalls/2; // 1.5x Overallocate
-		calls = (GLNVGcall*)realloc(gl->calls, sizeof(GLNVGcall) * ccalls);
-		if (calls == NULL) return NULL;
-		gl->calls = calls;
-		gl->ccalls = ccalls;
-	}
-	ret = &gl->calls[gl->ncalls++];
-	memset(ret, 0, sizeof(GLNVGcall));
-	return ret;
-}
-
-static int glnvg__allocPaths(GLNVGcontext* gl, int n)
-{
-	int ret = 0;
-	if (gl->npaths+n > gl->cpaths) {
-		GLNVGpath* paths;
-		int cpaths = glnvg__maxi(gl->npaths + n, 128) + gl->cpaths/2; // 1.5x Overallocate
-		paths = (GLNVGpath*)realloc(gl->paths, sizeof(GLNVGpath) * cpaths);
-		if (paths == NULL) return -1;
-		gl->paths = paths;
-		gl->cpaths = cpaths;
-	}
-	ret = gl->npaths;
-	gl->npaths += n;
-	return ret;
-}
-
-static int glnvg__allocVerts(GLNVGcontext* gl, int n)
-{
-	int ret = 0;
-	if (gl->nverts+n > gl->cverts) {
-		NVGvertex* verts;
-		int cverts = glnvg__maxi(gl->nverts + n, 4096) + gl->cverts/2; // 1.5x Overallocate
-		verts = (NVGvertex*)realloc(gl->verts, sizeof(NVGvertex) * cverts);
-		if (verts == NULL) return -1;
-		gl->verts = verts;
-		gl->cverts = cverts;
-	}
-	ret = gl->nverts;
-	gl->nverts += n;
-	return ret;
-}
-
-static int glnvg__allocFragUniforms(GLNVGcontext* gl, int n)
-{
-	int ret = 0, structSize = gl->fragSize;
-	if (gl->nuniforms+n > gl->cuniforms) {
-		unsigned char* uniforms;
-		int cuniforms = glnvg__maxi(gl->nuniforms+n, 128) + gl->cuniforms/2; // 1.5x Overallocate
-		uniforms = (unsigned char*)realloc(gl->uniforms, structSize * cuniforms);
-		if (uniforms == NULL) return -1;
-		gl->uniforms = uniforms;
-		gl->cuniforms = cuniforms;
-	}
-	ret = gl->nuniforms * structSize;
-	gl->nuniforms += n;
-	return ret;
-}
-
-static GLNVGfragUniforms* nvg__fragUniformPtr(GLNVGcontext* gl, int i)
-{
-	return (GLNVGfragUniforms*)&gl->uniforms[i];
-}
-
-static void glnvg__vset(NVGvertex* vtx, float x, float y, float u, float v)
-{
-	vtx->x = x;
-	vtx->y = y;
-	vtx->u = u;
-	vtx->v = v;
-}
-
-static void glnvg__renderFill(void* uptr, NVGpaint* paint, NVGcompositeOperationState compositeOperation, NVGscissor* scissor, float fringe,
-							  const float* bounds, const NVGpath* paths, int npaths)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	GLNVGcall* call = glnvg__allocCall(gl);
-	NVGvertex* quad;
-	GLNVGfragUniforms* frag;
-	int i, maxverts, offset;
-
-	if (call == NULL) return;
-
-	call->type = GLNVG_FILL;
-	call->triangleCount = 4;
-	call->pathOffset = glnvg__allocPaths(gl, npaths);
-	if (call->pathOffset == -1) goto error;
-	call->pathCount = npaths;
-	call->image = paint->image;
-	call->blendFunc = glnvg__blendCompositeOperation(compositeOperation);
-
-	if (npaths == 1 && paths[0].convex)
-	{
-		call->type = GLNVG_CONVEXFILL;
-		call->triangleCount = 0;	// Bounding box fill quad not needed for convex fill
-	}
-
-	// Allocate vertices for all the paths.
-	maxverts = glnvg__maxVertCount(paths, npaths) + call->triangleCount;
-	offset = glnvg__allocVerts(gl, maxverts);
-	if (offset == -1) goto error;
-
-	for (i = 0; i < npaths; i++) {
-		GLNVGpath* copy = &gl->paths[call->pathOffset + i];
-		const NVGpath* path = &paths[i];
-		memset(copy, 0, sizeof(GLNVGpath));
-		if (path->nfill > 0) {
-			copy->fillOffset = offset;
-			copy->fillCount = path->nfill;
-			memcpy(&gl->verts[offset], path->fill, sizeof(NVGvertex) * path->nfill);
-			offset += path->nfill;
-		}
-		if (path->nstroke > 0) {
-			copy->strokeOffset = offset;
-			copy->strokeCount = path->nstroke;
-			memcpy(&gl->verts[offset], path->stroke, sizeof(NVGvertex) * path->nstroke);
-			offset += path->nstroke;
-		}
-	}
-
-	// Setup uniforms for draw calls
-	if (call->type == GLNVG_FILL) {
-		// Quad
-		call->triangleOffset = offset;
-		quad = &gl->verts[call->triangleOffset];
-		glnvg__vset(&quad[0], bounds[2], bounds[3], 0.5f, 1.0f);
-		glnvg__vset(&quad[1], bounds[2], bounds[1], 0.5f, 1.0f);
-		glnvg__vset(&quad[2], bounds[0], bounds[3], 0.5f, 1.0f);
-		glnvg__vset(&quad[3], bounds[0], bounds[1], 0.5f, 1.0f);
-
-		call->uniformOffset = glnvg__allocFragUniforms(gl, 2);
-		if (call->uniformOffset == -1) goto error;
-		// Simple shader for stencil
-		frag = nvg__fragUniformPtr(gl, call->uniformOffset);
-		memset(frag, 0, sizeof(*frag));
-		frag->strokeThr = -1.0f;
-		frag->type = NSVG_SHADER_SIMPLE;
-		// Fill shader
-		glnvg__convertPaint(gl, nvg__fragUniformPtr(gl, call->uniformOffset + gl->fragSize), paint, scissor, fringe, fringe, -1.0f);
-	} else {
-		call->uniformOffset = glnvg__allocFragUniforms(gl, 1);
-		if (call->uniformOffset == -1) goto error;
-		// Fill shader
-		glnvg__convertPaint(gl, nvg__fragUniformPtr(gl, call->uniformOffset), paint, scissor, fringe, fringe, -1.0f);
-	}
-
-	return;
-
-error:
-	// We get here if call alloc was ok, but something else is not.
-	// Roll back the last call to prevent drawing it.
-	if (gl->ncalls > 0) gl->ncalls--;
-}
-
-static void glnvg__renderStroke(void* uptr, NVGpaint* paint, NVGcompositeOperationState compositeOperation, NVGscissor* scissor, float fringe,
-								float strokeWidth, const NVGpath* paths, int npaths)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	GLNVGcall* call = glnvg__allocCall(gl);
-	int i, maxverts, offset;
-
-	if (call == NULL) return;
-
-	call->type = GLNVG_STROKE;
-	call->pathOffset = glnvg__allocPaths(gl, npaths);
-	if (call->pathOffset == -1) goto error;
-	call->pathCount = npaths;
-	call->image = paint->image;
-	call->blendFunc = glnvg__blendCompositeOperation(compositeOperation);
-
-	// Allocate vertices for all the paths.
-	maxverts = glnvg__maxVertCount(paths, npaths);
-	offset = glnvg__allocVerts(gl, maxverts);
-	if (offset == -1) goto error;
-
-	for (i = 0; i < npaths; i++) {
-		GLNVGpath* copy = &gl->paths[call->pathOffset + i];
-		const NVGpath* path = &paths[i];
-		memset(copy, 0, sizeof(GLNVGpath));
-		if (path->nstroke) {
-			copy->strokeOffset = offset;
-			copy->strokeCount = path->nstroke;
-			memcpy(&gl->verts[offset], path->stroke, sizeof(NVGvertex) * path->nstroke);
-			offset += path->nstroke;
-		}
-	}
-
-	if (gl->flags & NVG_STENCIL_STROKES) {
-		// Fill shader
-		call->uniformOffset = glnvg__allocFragUniforms(gl, 2);
-		if (call->uniformOffset == -1) goto error;
-
-		glnvg__convertPaint(gl, nvg__fragUniformPtr(gl, call->uniformOffset), paint, scissor, strokeWidth, fringe, -1.0f);
-		glnvg__convertPaint(gl, nvg__fragUniformPtr(gl, call->uniformOffset + gl->fragSize), paint, scissor, strokeWidth, fringe, 1.0f - 0.5f/255.0f);
-
-	} else {
-		// Fill shader
-		call->uniformOffset = glnvg__allocFragUniforms(gl, 1);
-		if (call->uniformOffset == -1) goto error;
-		glnvg__convertPaint(gl, nvg__fragUniformPtr(gl, call->uniformOffset), paint, scissor, strokeWidth, fringe, -1.0f);
-	}
-
-	return;
-
-error:
-	// We get here if call alloc was ok, but something else is not.
-	// Roll back the last call to prevent drawing it.
-	if (gl->ncalls > 0) gl->ncalls--;
-}
-
-static void glnvg__renderTriangles(void* uptr, NVGpaint* paint, NVGcompositeOperationState compositeOperation, NVGscissor* scissor,
-								   const NVGvertex* verts, int nverts, float fringe)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	GLNVGcall* call = glnvg__allocCall(gl);
-	GLNVGfragUniforms* frag;
-
-	if (call == NULL) return;
-
-	call->type = GLNVG_TRIANGLES;
-	call->image = paint->image;
-	call->blendFunc = glnvg__blendCompositeOperation(compositeOperation);
-
-	// Allocate vertices for all the paths.
-	call->triangleOffset = glnvg__allocVerts(gl, nverts);
-	if (call->triangleOffset == -1) goto error;
-	call->triangleCount = nverts;
-
-	memcpy(&gl->verts[call->triangleOffset], verts, sizeof(NVGvertex) * nverts);
-
-	// Fill shader
-	call->uniformOffset = glnvg__allocFragUniforms(gl, 1);
-	if (call->uniformOffset == -1) goto error;
-	frag = nvg__fragUniformPtr(gl, call->uniformOffset);
-	glnvg__convertPaint(gl, frag, paint, scissor, 1.0f, fringe, -1.0f);
-	frag->type = NSVG_SHADER_IMG;
-
-	return;
-
-error:
-	// We get here if call alloc was ok, but something else is not.
-	// Roll back the last call to prevent drawing it.
-	if (gl->ncalls > 0) gl->ncalls--;
-}
-
-static void glnvg__renderDelete(void* uptr)
-{
-	GLNVGcontext* gl = (GLNVGcontext*)uptr;
-	int i;
-	if (gl == NULL) return;
-
-	glnvg__deleteShader(&gl->shader);
-
-#if NANOVG_GL3
-#if NANOVG_GL_USE_UNIFORMBUFFER
-	if (gl->fragBuf != 0)
-		glDeleteBuffers(1, &gl->fragBuf);
-#endif
-	if (gl->vertArr != 0)
-		glDeleteVertexArrays(1, &gl->vertArr);
-#endif
-	if (gl->vertBuf != 0)
-		glDeleteBuffers(1, &gl->vertBuf);
-
-	for (i = 0; i < gl->ntextures; i++) {
-		if (gl->textures[i].tex != 0 && (gl->textures[i].flags & NVG_IMAGE_NODELETE) == 0)
-			glDeleteTextures(1, &gl->textures[i].tex);
-	}
-	free(gl->textures);
-
-	free(gl->paths);
-	free(gl->verts);
-	free(gl->uniforms);
-	free(gl->calls);
-
-	free(gl);
-}
-
-
-#if defined NANOVG_GL2
-NVGcontext* nvgCreateGL2(int flags)
-#elif defined NANOVG_GL3
-NVGcontext* nvgCreateGL3(int flags)
-#elif defined NANOVG_GLES2
-NVGcontext* nvgCreateGLES2(int flags)
-#elif defined NANOVG_GLES3
-NVGcontext* nvgCreateGLES3(int flags)
-#endif
-{
-	#ifdef NANOVG_USE_GLEW
-	if (!glew_initialized) {
-		if (glewInit() == GLEW_OK) {
-			glew_initialized = 1;
-		} else {
-			printf("Failed to initialize GLEW");
-			// GLEW generates GL error because it calls glGetString(GL_EXTENSIONS), we'll consume it here.
-			glGetError();
-		}
-	}
-	#endif
-
-	NVGparams params;
-	NVGcontext* ctx = NULL;
-	GLNVGcontext* gl = (GLNVGcontext*)malloc(sizeof(GLNVGcontext));
-	if (gl == NULL) goto error;
-	memset(gl, 0, sizeof(GLNVGcontext));
-
-	memset(&params, 0, sizeof(params));
-	params.renderCreate = glnvg__renderCreate;
-	params.renderCreateTexture = glnvg__renderCreateTexture;
-	params.renderDeleteTexture = glnvg__renderDeleteTexture;
-	params.renderUpdateTexture = glnvg__renderUpdateTexture;
-	params.renderGetTextureSize = glnvg__renderGetTextureSize;
-	params.renderViewport = glnvg__renderViewport;
-	params.renderCancel = glnvg__renderCancel;
-	params.renderFlush = glnvg__renderFlush;
-	params.renderFill = glnvg__renderFill;
-	params.renderStroke = glnvg__renderStroke;
-	params.renderTriangles = glnvg__renderTriangles;
-	params.renderDelete = glnvg__renderDelete;
-	params.userPtr = gl;
-	params.edgeAntiAlias = flags & NVG_ANTIALIAS ? 1 : 0;
-
-	gl->flags = flags;
-
-	ctx = nvgCreateInternal(&params);
-	if (ctx == NULL) goto error;
-
-	return ctx;
-
-error:
-	// 'gl' is freed by nvgDeleteInternal.
-	if (ctx != NULL) nvgDeleteInternal(ctx);
-	return NULL;
-}
-
-#if defined NANOVG_GL2
-void nvgDeleteGL2(NVGcontext* ctx)
-#elif defined NANOVG_GL3
-void nvgDeleteGL3(NVGcontext* ctx)
-#elif defined NANOVG_GLES2
-void nvgDeleteGLES2(NVGcontext* ctx)
-#elif defined NANOVG_GLES3
-void nvgDeleteGLES3(NVGcontext* ctx)
-#endif
-{
-	nvgDeleteInternal(ctx);
-}
-
-#if defined NANOVG_GL2
-int nvglCreateImageFromHandleGL2(NVGcontext* ctx, unsigned int textureId, int w, int h, int imageFlags)
-#elif defined NANOVG_GL3
-int nvglCreateImageFromHandleGL3(NVGcontext* ctx, unsigned int textureId, int w, int h, int imageFlags)
-#elif defined NANOVG_GLES2
-int nvglCreateImageFromHandleGLES2(NVGcontext* ctx, unsigned int textureId, int w, int h, int imageFlags)
-#elif defined NANOVG_GLES3
-int nvglCreateImageFromHandleGLES3(NVGcontext* ctx, unsigned int textureId, int w, int h, int imageFlags)
-#endif
-{
-	GLNVGcontext* gl = (GLNVGcontext*)nvgInternalParams(ctx)->userPtr;
-	GLNVGtexture* tex = glnvg__allocTexture(gl);
-
-	if (tex == NULL) return 0;
-
-	tex->type = NVG_TEXTURE_RGBA;
-	tex->tex = textureId;
-	tex->flags = imageFlags;
-	tex->width = w;
-	tex->height = h;
-
-	return tex->id;
-}
-
-#if defined NANOVG_GL2
-unsigned int nvglImageHandleGL2(NVGcontext* ctx, int image)
-#elif defined NANOVG_GL3
-unsigned int nvglImageHandleGL3(NVGcontext* ctx, int image)
-#elif defined NANOVG_GLES2
-unsigned int nvglImageHandleGLES2(NVGcontext* ctx, int image)
-#elif defined NANOVG_GLES3
-unsigned int nvglImageHandleGLES3(NVGcontext* ctx, int image)
-#endif
-{
-	GLNVGcontext* gl = (GLNVGcontext*)nvgInternalParams(ctx)->userPtr;
-	GLNVGtexture* tex = glnvg__findTexture(gl, image);
-	return tex->tex;
-}
-
-#if defined NANOVG_GL2
-const NanoVG_GL_Functions_VTable NanoVG_GL2_Functions_VTable = {
-	.name = "GL2",
-	.createContext = &nvgCreateGL2,
-	.deleteContext = &nvgDeleteGL2,
-	.createImageFromHandle = &nvglCreateImageFromHandleGL2,
-	.getImageHandle = &nvglImageHandleGL2,
-};
-#elif defined NANOVG_GL3
-const NanoVG_GL_Functions_VTable NanoVG_GL3_Functions_VTable = {
-	.name = "GL3",
-	.createContext = &nvgCreateGL3,
-	.deleteContext = &nvgDeleteGL3,
-	.createImageFromHandle = &nvglCreateImageFromHandleGL3,
-	.getImageHandle = &nvglImageHandleGL3,
-};
-#elif defined NANOVG_GLES2
-const NanoVG_GL_Functions_VTable NanoVG_GLES2_Functions_VTable = {
-	.name = "GLES2",
-	.createContext = &nvgCreateGLES2,
-	.deleteContext = &nvgDeleteGLES2,
-	.createImageFromHandle = &nvglCreateImageFromHandleGLES2,
-	.getImageHandle = &nvglImageHandleGLES2,
-};
-#elif defined NANOVG_GLES3
-const NanoVG_GL_Functions_VTable NanoVG_GLES3_Functions_VTable = {
-	.name = "GLES2",
-	.createContext = &nvgCreateGLES3,
-	.deleteContext = &nvgDeleteGLES3,
-	.createImageFromHandle = &nvglCreateImageFromHandleGLES3,
-	.getImageHandle = &nvglImageHandleGLES3,
-};
-#endif