Doer fonts fast(er)! (better batching for font glyph rendering)
This commit is contained in:
Shyotl
@@ -268,9 +268,15 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
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const LLFontGlyphInfo* next_glyph = NULL;
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// Remember last-used texture to avoid unnecesssary bind calls.
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LLImageGL *last_bound_texture = NULL;
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const S32 GLYPH_BATCH_SIZE = 30;
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static LL_ALIGN_16(LLVector4a vertices[GLYPH_BATCH_SIZE * 4]);
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static LLVector2 uvs[GLYPH_BATCH_SIZE * 4];
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static LLColor4U colors[GLYPH_BATCH_SIZE * 4];
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LLColor4U text_color(color);
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S32 bitmap_num = -1;
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S32 glyph_count = 0;
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for (i = begin_offset; i < begin_offset + length; i++)
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{
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llwchar wch = wstr[i];
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@@ -299,11 +305,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
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break;
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}
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if (last_bound_texture != ext_image)
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{
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gGL.getTexUnit(0)->bind(ext_image);
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last_bound_texture = ext_image;
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}
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gGL.getTexUnit(0)->bind(ext_image);
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// snap origin to whole screen pixel
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const F32 ext_x = (F32)llround(cur_render_x + (EXT_X_BEARING * sScaleX));
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@@ -311,7 +313,23 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
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LLRectf uv_rect(0.f, 1.f, 1.f, 0.f);
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LLRectf screen_rect(ext_x, ext_y + ext_height, ext_x + ext_width, ext_y);
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drawGlyph(screen_rect, uv_rect, LLColor4::white, style, shadow, drop_shadow_strength);
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if (glyph_count > 0)
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{
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gGL.begin(LLRender::QUADS);
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{
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gGL.vertexBatchPreTransformed(vertices, uvs, colors, glyph_count * 4);
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}
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gGL.end();
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glyph_count = 0;
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}
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renderQuad(vertices, uvs, colors, screen_rect, uv_rect, LLColor4U::white, 0);
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//No batching here. It will never happen.
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gGL.begin(LLRender::QUADS);
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{
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gGL.vertexBatchPreTransformed(vertices, uvs, colors, 4);
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}
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gGL.end();
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if (!label.empty())
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{
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@@ -320,13 +338,11 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
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/*llfloor*/(ext_x / sScaleX) + ext_image->getWidth() + EXT_X_BEARING - sCurOrigin.mX,
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/*llfloor*/(cur_render_y / sScaleY) - sCurOrigin.mY,
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color,
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halign, BASELINE, NORMAL, NO_SHADOW, S32_MAX, S32_MAX, NULL,
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halign, BASELINE, UNDERLINE, NO_SHADOW, S32_MAX, S32_MAX, NULL,
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TRUE );
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gGL.popMatrix();
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}
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gGL.color4fv(color.mV);
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chars_drawn++;
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cur_x += ext_advance;
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if (((i + 1) < length) && wstr[i+1])
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@@ -349,11 +365,24 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
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break;
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}
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// Per-glyph bitmap texture.
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LLImageGL *image_gl = font_bitmap_cache->getImageGL(fgi->mBitmapNum);
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if (last_bound_texture != image_gl)
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S32 next_bitmap_num = fgi->mBitmapNum;
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if (next_bitmap_num != bitmap_num)
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{
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gGL.getTexUnit(0)->bind(image_gl);
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last_bound_texture = image_gl;
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// Actually draw the queued glyphs before switching their texture;
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// otherwise the queued glyphs will be taken from wrong textures.
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if (glyph_count > 0)
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{
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gGL.begin(LLRender::QUADS);
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{
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gGL.vertexBatchPreTransformed(vertices, uvs, colors, glyph_count * 4);
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}
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gGL.end();
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glyph_count = 0;
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}
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bitmap_num = next_bitmap_num;
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LLImageGL *font_image = font_bitmap_cache->getImageGL(bitmap_num);
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gGL.getTexUnit(0)->bind(font_image);
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}
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if ((start_x + scaled_max_pixels) < (cur_x + fgi->mXBearing + fgi->mWidth))
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@@ -368,13 +397,24 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
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(fgi->mYBitmapOffset + fgi->mHeight + PAD_UVY) * inv_height,
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(fgi->mXBitmapOffset + fgi->mWidth) * inv_width,
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(fgi->mYBitmapOffset - PAD_UVY) * inv_height);
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// snap glyph origin to whole screen pixel
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LLRectf screen_rect((F32)llround(cur_render_x + (F32)fgi->mXBearing),
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// snap glyph origin to whole screen pixel
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LLRectf screen_rect((F32)llround(cur_render_x + (F32)fgi->mXBearing),
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(F32)llround(cur_render_y + (F32)fgi->mYBearing),
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(F32)llround(cur_render_x + (F32)fgi->mXBearing) + (F32)fgi->mWidth,
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(F32)llround(cur_render_y + (F32)fgi->mYBearing) - (F32)fgi->mHeight);
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drawGlyph(screen_rect, uv_rect, color, style, shadow, drop_shadow_strength);
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if (glyph_count >= GLYPH_BATCH_SIZE)
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{
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gGL.begin(LLRender::QUADS);
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{
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gGL.vertexBatchPreTransformed(vertices, uvs, colors, glyph_count * 4);
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}
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gGL.end();
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glyph_count = 0;
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}
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drawGlyph(glyph_count, vertices, uvs, colors, screen_rect, uv_rect, text_color, style, shadow, drop_shadow_strength);
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chars_drawn++;
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cur_x += fgi->mXAdvance;
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@@ -400,6 +440,13 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
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}
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}
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gGL.begin(LLRender::QUADS);
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{
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gGL.vertexBatchPreTransformed(vertices, uvs, colors, glyph_count * 4);
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}
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gGL.end();
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if (right_x)
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{
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*right_x = (cur_x - origin.mV[VX]) / sScaleX;
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@@ -1243,95 +1290,95 @@ LLFontGL &LLFontGL::operator=(const LLFontGL &source)
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return *this;
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}
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void LLFontGL::renderQuad(const LLRectf& screen_rect, const LLRectf& uv_rect, F32 slant_amt) const
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void LLFontGL::renderQuad(LLVector4a* vertex_out, LLVector2* uv_out, LLColor4U* colors_out, const LLRectf& screen_rect, const LLRectf& uv_rect, const LLColor4U& color, F32 slant_amt) const
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{
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gGL.texCoord2f(uv_rect.mRight, uv_rect.mTop);
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gGL.vertex2f(llfont_round_x(screen_rect.mRight),
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llfont_round_y(screen_rect.mTop));
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S32 index = 0;
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gGL.texCoord2f(uv_rect.mLeft, uv_rect.mTop);
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gGL.vertex2f(llfont_round_x(screen_rect.mLeft),
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llfont_round_y(screen_rect.mTop));
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vertex_out[index].set(screen_rect.mRight, screen_rect.mTop, 0.f);
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uv_out[index] = LLVector2(uv_rect.mRight, uv_rect.mTop);
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colors_out[index] = color;
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index++;
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gGL.texCoord2f(uv_rect.mLeft, uv_rect.mBottom);
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gGL.vertex2f(llfont_round_x(screen_rect.mLeft + slant_amt),
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llfont_round_y(screen_rect.mBottom));
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vertex_out[index].set(screen_rect.mLeft, screen_rect.mTop, 0.f);
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uv_out[index] = LLVector2(uv_rect.mLeft, uv_rect.mTop);
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colors_out[index] = color;
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index++;
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gGL.texCoord2f(uv_rect.mRight, uv_rect.mBottom);
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gGL.vertex2f(llfont_round_x(screen_rect.mRight + slant_amt),
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llfont_round_y(screen_rect.mBottom));
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vertex_out[index].set(screen_rect.mLeft, screen_rect.mBottom, 0.f);
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uv_out[index] = LLVector2(uv_rect.mLeft, uv_rect.mBottom);
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colors_out[index] = color;
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index++;
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vertex_out[index].set(screen_rect.mRight, screen_rect.mBottom, 0.f);
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uv_out[index] = LLVector2(uv_rect.mRight, uv_rect.mBottom);
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colors_out[index] = color;
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}
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void LLFontGL::drawGlyph(const LLRectf& screen_rect, const LLRectf& uv_rect, const LLColor4& color, U8 style, ShadowType shadow, F32 drop_shadow_strength) const
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void LLFontGL::drawGlyph(S32& glyph_count, LLVector4a* vertex_out, LLVector2* uv_out, LLColor4U* colors_out, const LLRectf& screen_rect, const LLRectf& uv_rect, const LLColor4U& color, U8 style, ShadowType shadow, F32 drop_shadow_strength) const
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{
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F32 slant_offset;
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slant_offset = ((style & ITALIC) ? ( -mFontFreetype->getAscenderHeight() * 0.2f) : 0.f);
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gGL.begin(LLRender::QUADS);
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//FIXME: bold and drop shadow are mutually exclusive only for convenience
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//Allow both when we need them.
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if (style & BOLD)
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{
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//FIXME: bold and drop shadow are mutually exclusive only for convenience
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//Allow both when we need them.
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if (style & BOLD)
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for (S32 pass = 0; pass < 2; pass++)
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{
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gGL.color4fv(color.mV);
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for (S32 pass = 0; pass < 2; pass++)
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{
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LLRectf screen_rect_offset = screen_rect;
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LLRectf screen_rect_offset = screen_rect;
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screen_rect_offset.translate((F32)(pass * BOLD_OFFSET), 0.f);
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renderQuad(screen_rect_offset, uv_rect, slant_offset);
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}
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screen_rect_offset.translate((F32)(pass * BOLD_OFFSET), 0.f);
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renderQuad(&vertex_out[glyph_count * 4], &uv_out[glyph_count * 4], &colors_out[glyph_count * 4], screen_rect_offset, uv_rect, color, slant_offset);
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glyph_count++;
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}
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else if (shadow == DROP_SHADOW_SOFT)
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{
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LLColor4 shadow_color = LLFontGL::sShadowColor;
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shadow_color.mV[VALPHA] = color.mV[VALPHA] * drop_shadow_strength * DROP_SHADOW_SOFT_STRENGTH;
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gGL.color4fv(shadow_color.mV);
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for (S32 pass = 0; pass < 5; pass++)
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{
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LLRectf screen_rect_offset = screen_rect;
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switch(pass)
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{
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case 0:
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screen_rect_offset.translate(-1.f, -1.f);
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break;
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case 1:
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screen_rect_offset.translate(1.f, -1.f);
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break;
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case 2:
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screen_rect_offset.translate(1.f, 1.f);
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break;
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case 3:
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screen_rect_offset.translate(-1.f, 1.f);
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break;
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case 4:
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screen_rect_offset.translate(0, -2.f);
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break;
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}
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renderQuad(screen_rect_offset, uv_rect, slant_offset);
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}
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gGL.color4fv(color.mV);
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renderQuad(screen_rect, uv_rect, slant_offset);
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}
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else if (shadow == DROP_SHADOW)
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{
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LLColor4 shadow_color = LLFontGL::sShadowColor;
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shadow_color.mV[VALPHA] = color.mV[VALPHA] * drop_shadow_strength;
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gGL.color4fv(shadow_color.mV);
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LLRectf screen_rect_shadow = screen_rect;
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screen_rect_shadow.translate(1.f, -1.f);
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renderQuad(screen_rect_shadow, uv_rect, slant_offset);
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gGL.color4fv(color.mV);
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renderQuad(screen_rect, uv_rect, slant_offset);
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}
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else // normal rendering
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{
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gGL.color4fv(color.mV);
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renderQuad(screen_rect, uv_rect, slant_offset);
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}
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}
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gGL.end();
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else if (shadow == DROP_SHADOW_SOFT)
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{
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LLColor4U shadow_color = LLFontGL::sShadowColor;
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shadow_color.mV[VALPHA] = U8(color.mV[VALPHA] * drop_shadow_strength * DROP_SHADOW_SOFT_STRENGTH);
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for (S32 pass = 0; pass < 5; pass++)
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{
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LLRectf screen_rect_offset = screen_rect;
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switch(pass)
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{
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case 0:
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screen_rect_offset.translate(-1.f, -1.f);
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break;
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case 1:
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screen_rect_offset.translate(1.f, -1.f);
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break;
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case 2:
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screen_rect_offset.translate(1.f, 1.f);
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break;
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case 3:
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screen_rect_offset.translate(-1.f, 1.f);
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break;
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case 4:
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screen_rect_offset.translate(0, -2.f);
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break;
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}
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renderQuad(&vertex_out[glyph_count * 4], &uv_out[glyph_count * 4], &colors_out[glyph_count * 4], screen_rect_offset, uv_rect, shadow_color, slant_offset);
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glyph_count++;
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}
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renderQuad(&vertex_out[glyph_count * 4], &uv_out[glyph_count * 4], &colors_out[glyph_count * 4], screen_rect, uv_rect, color, slant_offset);
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glyph_count++;
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}
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else if (shadow == DROP_SHADOW)
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{
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LLColor4U shadow_color = LLFontGL::sShadowColor;
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shadow_color.mV[VALPHA] = U8(color.mV[VALPHA] * drop_shadow_strength);
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LLRectf screen_rect_shadow = screen_rect;
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screen_rect_shadow.translate(1.f, -1.f);
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renderQuad(&vertex_out[glyph_count * 4], &uv_out[glyph_count * 4], &colors_out[glyph_count * 4], screen_rect_shadow, uv_rect, shadow_color, slant_offset);
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glyph_count++;
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renderQuad(&vertex_out[glyph_count * 4], &uv_out[glyph_count * 4], &colors_out[glyph_count * 4], screen_rect, uv_rect, color, slant_offset);
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glyph_count++;
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}
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else // normal rendering
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{
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renderQuad(&vertex_out[glyph_count * 4], &uv_out[glyph_count * 4], &colors_out[glyph_count * 4], screen_rect, uv_rect, color, slant_offset);
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glyph_count++;
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}
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}
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@@ -232,8 +232,8 @@ protected:
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LLFontDescriptor mFontDescriptor;
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LLPointer<LLFontFreetype> mFontFreetype;
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void renderQuad(const LLRectf& screen_rect, const LLRectf& uv_rect, F32 slant_amt) const;
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void drawGlyph(const LLRectf& screen_rect, const LLRectf& uv_rect, const LLColor4& color, U8 style, ShadowType shadow, F32 drop_shadow_fade) const;
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void renderQuad(LLVector4a* vertex_out, LLVector2* uv_out, LLColor4U* colors_out, const LLRectf& screen_rect, const LLRectf& uv_rect, const LLColor4U& color, F32 slant_amt) const;
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void drawGlyph(S32& glyph_count, LLVector4a* vertex_out, LLVector2* uv_out, LLColor4U* colors_out, const LLRectf& screen_rect, const LLRectf& uv_rect, const LLColor4U& color, U8 style, ShadowType shadow, F32 drop_shadow_fade) const;
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// Registry holds all instantiated fonts.
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static LLFontRegistry* sFontRegistry;
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