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Bind a dummy texture in setUniforms when compiling with emscripten 

fixes the WebGL error "RENDER WARNING: there is no texture bound to the unit 0"" in Chrome
master
Oli Larkin 2020-03-02 23:18:05 +00:00
parent 6570b56926
commit d98041b4ee
1 changed files with 16 additions and 0 deletions
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16
src/nanovg_gl.h
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@ -268,6 +268,10 @@ struct GLNVGcontext {
GLuint stencilFuncMask;
GLNVGblend blendFunc;
#endif
#ifdef __EMSCRIPTEN__
int dummyTex;
#endif
};
typedef struct GLNVGcontext GLNVGcontext;
@ -704,6 +708,10 @@ static int glnvg__renderCreate(void* uptr)
glFinish();
#ifdef __EMSCRIPTEN__
gl->dummyTex = 0;
#endif
return 1;
}
@ -985,7 +993,15 @@ static void glnvg__setUniforms(GLNVGcontext* gl, int uniformOffset, int image)
glnvg__bindTexture(gl, tex != NULL ? tex->tex : 0);
glnvg__checkError(gl, "tex paint tex");
} else {
#ifdef __EMSCRIPTEN__
if(gl->dummyTex == 0) {
gl->dummyTex = glnvg__renderCreateTexture(&gl, NVG_TEXTURE_ALPHA, 2, 2, 0, NULL);
}
GLNVGtexture* tex = glnvg__findTexture(gl, gl->dummyTex);
glnvg__bindTexture(gl, tex->tex);
#else
glnvg__bindTexture(gl, 0);
#endif
}
}