diff options
Diffstat (limited to 'source/blender/blenfont/intern/blf_font.c')
| -rw-r--r-- | source/blender/blenfont/intern/blf_font.c | 126 |
1 files changed, 101 insertions, 25 deletions
diff --git a/source/blender/blenfont/intern/blf_font.c b/source/blender/blenfont/intern/blf_font.c index 1f304d208e6..868d8eb775e 100644 --- a/source/blender/blenfont/intern/blf_font.c +++ b/source/blender/blenfont/intern/blf_font.c @@ -59,6 +59,8 @@ #include "BLF_api.h" #include "GPU_immediate.h" +#include "GPU_matrix.h" +#include "GPU_batch.h" #include "blf_internal_types.h" #include "blf_internal.h" @@ -69,12 +71,104 @@ # define FT_New_Face FT_New_Face__win32_compat #endif +/* Batching buffer for drawing. */ +BatchBLF g_batch; + /* freetype2 handle ONLY for this file!. */ static FT_Library ft_lib; static SpinLock ft_lib_mutex; +/* -------------------------------------------------------------------- */ +/** \name Glyph Batching + * \{ */ +/** + * Drawcalls are precious! make them count! + * Since most of the Text elems are not covered by other UI elements, we can + * group some strings together and render them in one drawcall. This behaviour + * is on demand only, between BLF_batch_start() and BLF_batch_end(). + **/ +static void blf_batching_init(void) +{ + Gwn_VertFormat format = {0}; + g_batch.pos_loc = GWN_vertformat_attr_add(&format, "pos", GWN_COMP_F32, 4, GWN_FETCH_FLOAT); + g_batch.tex_loc = GWN_vertformat_attr_add(&format, "tex", GWN_COMP_F32, 4, GWN_FETCH_FLOAT); + g_batch.col_loc = GWN_vertformat_attr_add(&format, "col", GWN_COMP_U8, 4, GWN_FETCH_INT_TO_FLOAT_UNIT); + + g_batch.verts = GWN_vertbuf_create_with_format_ex(&format, GWN_USAGE_STREAM); + GWN_vertbuf_data_alloc(g_batch.verts, BLF_BATCHING_SIZE); + + g_batch.batch = GWN_batch_create_ex(GWN_PRIM_POINTS, g_batch.verts, NULL, GWN_BATCH_OWNS_VBO); +} + +static void blf_batching_exit(void) +{ + GWN_BATCH_DISCARD_SAFE(g_batch.batch); +} + +void blf_batching_vao_clear(void) +{ + if (g_batch.batch) { + gwn_batch_vao_cache_clear(g_batch.batch); + } +} + +void blf_batching_start(FontBLF *font) +{ + if (g_batch.batch == NULL) { + blf_batching_init(); + } + + zero_v2(g_batch.ofs); + if ((font->flags & (BLF_ROTATION | BLF_MATRIX | BLF_ASPECT)) == 0) { + copy_v2_v2(g_batch.ofs, font->pos); + } + + /* restart to 1st vertex data pointers */ + GWN_vertbuf_attr_get_raw_data(g_batch.verts, g_batch.pos_loc, &g_batch.pos_step); + GWN_vertbuf_attr_get_raw_data(g_batch.verts, g_batch.tex_loc, &g_batch.tex_step); + GWN_vertbuf_attr_get_raw_data(g_batch.verts, g_batch.col_loc, &g_batch.col_step); + g_batch.glyph_ct = 0; + g_batch.font = font; +} + +void blf_batching_draw(void) +{ + if (g_batch.glyph_ct == 0) + return; + + glEnable(GL_BLEND); + glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA); + + BLI_assert(g_batch.font->tex_bind_state != 0); /* must still be valid */ + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, g_batch.font->tex_bind_state); + + GWN_vertbuf_vertex_count_set(g_batch.verts, g_batch.glyph_ct); + GWN_vertbuf_use(g_batch.verts); /* send data */ + + GWN_batch_program_set_builtin(g_batch.batch, GPU_SHADER_TEXT); + GWN_batch_uniform_1i(g_batch.batch, "glyph", 0); + GWN_batch_draw(g_batch.batch); + + glDisable(GL_BLEND); + + g_batch.glyph_ct = 0; +} + +static void blf_batching_end(void) +{ + if (!g_batch.enabled) { + blf_batching_draw(); + } +} + +/** \} */ + +/* -------------------------------------------------------------------- */ + int blf_font_init(void) { + memset(&g_batch, 0, sizeof(g_batch)); BLI_spin_init(&ft_lib_mutex); return FT_Init_FreeType(&ft_lib); } @@ -83,6 +177,7 @@ void blf_font_exit(void) { FT_Done_FreeType(ft_lib); BLI_spin_end(&ft_lib_mutex); + blf_batching_exit(); } void blf_font_size(FontBLF *font, unsigned int size, unsigned int dpi) @@ -174,24 +269,6 @@ static void blf_font_ensure_ascii_table(FontBLF *font) } \ } (void)0 -static unsigned int verts_needed(const FontBLF *font, const char *str, size_t len) -{ - size_t str_len = (len > 50) ? strlen(str) : INT_MAX; /* Arbitrary. */ - unsigned int length = (unsigned int)MIN2(str_len, len); - unsigned int quad_ct = 1; - - if (font->flags & BLF_SHADOW) { - if (font->shadow == 0) - quad_ct += 1; - if (font->shadow <= 4) - quad_ct += 9; /* 3x3 kernel */ - else - quad_ct += 25; /* 5x5 kernel */ - } - - return length * quad_ct; /* Only one vert per quad */ -} - static void blf_font_draw_ex( FontBLF *font, const char *str, size_t len, struct ResultBLF *r_info, int pen_y) @@ -212,8 +289,7 @@ static void blf_font_draw_ex( blf_font_ensure_ascii_table(font); - immBeginAtMost(GWN_PRIM_POINTS, verts_needed(font, str, len)); - /* at most because some glyphs might be clipped & not drawn */ + blf_batching_start(font); while ((i < len) && str[i]) { BLF_UTF8_NEXT_FAST(font, g, str, i, c, glyph_ascii_table); @@ -232,7 +308,7 @@ static void blf_font_draw_ex( g_prev = g; } - immEnd(); + blf_batching_end(); if (r_info) { r_info->lines = 1; @@ -259,7 +335,7 @@ static void blf_font_draw_ascii_ex( blf_font_ensure_ascii_table(font); - immBeginAtMost(GWN_PRIM_POINTS, verts_needed(font, str, len)); + blf_batching_start(font); while ((c = *(str++)) && len--) { BLI_assert(c < 128); @@ -275,7 +351,7 @@ static void blf_font_draw_ascii_ex( g_prev = g; } - immEnd(); + blf_batching_end(); if (r_info) { r_info->lines = 1; @@ -299,7 +375,7 @@ int blf_font_draw_mono(FontBLF *font, const char *str, size_t len, int cwidth) blf_font_ensure_ascii_table(font); - immBeginAtMost(GWN_PRIM_POINTS, verts_needed(font, str, len)); + blf_batching_start(font); while ((i < len) && str[i]) { BLF_UTF8_NEXT_FAST(font, g, str, i, c, glyph_ascii_table); @@ -320,7 +396,7 @@ int blf_font_draw_mono(FontBLF *font, const char *str, size_t len, int cwidth) pen_x += cwidth * col; } - immEnd(); + blf_batching_end(); return columns; } |