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fix scissor and refactor

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This commit is contained in:
xianjimli 2019-08-05 17:22:33 +08:00
parent 6249a18d03
commit c9aa721c82
1 changed files with 43 additions and 11 deletions
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46
3rd/nanovg/gl/nanovg_gl.h
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@ -612,7 +612,10 @@ static int glnvg__renderCreate(void* uptr) {
" } else if(type == 7) { // fill color\n"
" strokeAlpha = strokeMask();\n"
" if (strokeAlpha < strokeThr) discard;\n"
" result = innerCol * strokeAlpha;\n"
" float scissor = scissorMask(fpos);\n"
" vec4 color = innerCol;\n"
" color *= strokeAlpha * scissor;\n"
" result = color;\n"
" } else if (type == 0) { // gradient\n"
" strokeAlpha = strokeMask();\n"
" if (strokeAlpha < strokeThr) discard;\n"
@ -1083,7 +1086,7 @@ static void glnvg__stroke(GLNVGcontext* gl, GLNVGcall* call) {
glDisable(GL_STENCIL_TEST);
// glnvg__convertPaint(gl, nvg__fragUniformPtr(gl, call->uniformOffset + gl->fragSize),
//paint, scissor, strokeWidth, fringe, 1.0f - 0.5f/255.0f);
// paint, scissor, strokeWidth, fringe, 1.0f - 0.5f/255.0f);
} else {
glnvg__setUniforms(gl, call->uniformOffset, call->image);
@ -1310,24 +1313,51 @@ static void glnvg__vset(NVGvertex* vtx, float x, float y, float u, float v) {
}
static int glnvg__pathIsRect(const NVGpath* path) {
if (path->nfill == 4) {
const NVGvertex* verts = path->fill;
if (path->nfill == 4) {
int ret1 = (verts[0].y == verts[1].y && verts[1].x == verts[2].x && verts[2].y == verts[3].y &&
verts[3].x == verts[0].x);
int ret2 = (verts[0].x == verts[1].x && verts[1].y == verts[2].y && verts[2].x == verts[3].x &&
verts[3].y == verts[0].y);
return ret1 || ret2;
if (ret1 || ret2) {
return 1;
}
}
return 0;
}
static int glnvg__pathInScissor(const NVGpath* path, NVGscissor* scissor) {
int32_t i = 0;
float cx = scissor->xform[4];
float cy = scissor->xform[5];
float hw = scissor->extent[0];
float hh = scissor->extent[1];
float l = cx - hw;
float t = cy - hh;
float r = l + 2 * hw - 1;
float b = t + 2 * hh - 1;
const NVGvertex* verts = path->fill;
for (i = 0; i < path->nfill; i++) {
const NVGvertex* iter = verts + i;
int x = iter->x;
int y = iter->y;
if (x < l || x > r || y < t || y > b) {
return 0;
}
}
return 1;
}
static void glnvg__renderFill(void* uptr, NVGpaint* paint,
NVGcompositeOperationState compositeOperation, NVGscissor* scissor,
float fringe, const float* bounds, const NVGpath* paths, int npaths) {
int is_rect = 0;
int support_fast_draw = 0;
int is_gradient = memcmp(&(paint->innerColor), &(paint->outerColor), sizeof(paint->outerColor));
GLNVGcontext* gl = (GLNVGcontext*)uptr;
@ -1365,7 +1395,9 @@ static void glnvg__renderFill(void* uptr, NVGpaint* paint,
copy->fillCount = path->nfill;
memcpy(&gl->verts[offset], path->fill, sizeof(NVGvertex) * path->nfill);
offset += path->nfill;
is_rect = npaths == 1 && glnvg__pathIsRect(path);
if (npaths == 1) {
support_fast_draw = glnvg__pathIsRect(path) && glnvg__pathInScissor(path, scissor);
}
}
if (path->nstroke > 0) {
copy->strokeOffset = offset;
@ -1405,7 +1437,7 @@ static void glnvg__renderFill(void* uptr, NVGpaint* paint,
fringe, -1.0f);
}
if (is_rect) {
if (support_fast_draw) {
if (paint->image != 0) {
frag->type = NSVG_SHADER_FAST_FILLIMG;
} else if (!is_gradient) {