diff options
Diffstat (limited to 'nuklear_ui')
| -rw-r--r-- | nuklear_ui/blastem_nuklear.c | 72 | ||||
| -rw-r--r-- | nuklear_ui/nuklear_rawfb.h | 1007 | ||||
| -rw-r--r-- | nuklear_ui/nuklear_sdl_gles2.h | 12 |
3 files changed, 1083 insertions, 8 deletions
diff --git a/nuklear_ui/blastem_nuklear.c b/nuklear_ui/blastem_nuklear.c index bf1c9b4..b94e44a 100644 --- a/nuklear_ui/blastem_nuklear.c +++ b/nuklear_ui/blastem_nuklear.c @@ -1,9 +1,12 @@ #define NK_IMPLEMENTATION #define NK_SDL_GLES2_IMPLEMENTATION +#define NK_RAWFB_IMPLEMENTATION +#define RAWFB_RGBX_8888 #include <stdlib.h> #include <limits.h> #include "blastem_nuklear.h" +#include "nuklear_rawfb.h" #include "font.h" #include "../render.h" #include "../render_sdl.h" @@ -18,6 +21,7 @@ #include "../bindings.h" static struct nk_context *context; +static struct rawfb_context *fb_context; typedef struct { @@ -1899,7 +1903,15 @@ void blastem_nuklear_render(void) if (current_view != view_play) { nk_input_end(context); current_view(context); - nk_sdl_render(NK_ANTI_ALIASING_ON, 512 * 1024, 128 * 1024); + if (fb_context) { + fb_context->fb.pixels = render_get_framebuffer(FRAMEBUFFER_UI, &fb_context->fb.pitch); + nk_rawfb_render(fb_context, nk_rgb(0,0,0), 0); + render_framebuffer_updated(FRAMEBUFFER_UI, render_width()); + } else { +#ifndef DISABLE_OPENGL + nk_sdl_render(NK_ANTI_ALIASING_ON, 512 * 1024, 128 * 1024); +#endif + } nk_input_begin(context); } } @@ -1957,6 +1969,12 @@ static void context_destroyed(void) } } +static void fb_resize(void) +{ + nk_rawfb_resize_fb(fb_context, NULL, render_width(), render_height(), 0); +} + +#ifndef DISABLE_OPENGL static struct nk_image load_image_texture(uint32_t *buf, uint32_t width, uint32_t height) { GLuint tex; @@ -1973,11 +1991,29 @@ static struct nk_image load_image_texture(uint32_t *buf, uint32_t width, uint32_ #endif return nk_image_id((int)tex); } +#endif + +static struct nk_image load_image_rawfb(uint32_t *buf, uint32_t width, uint32_t height) +{ + struct rawfb_image *fbimg = calloc(1, sizeof(struct rawfb_image)); + fbimg->pixels = buf; + fbimg->pitch = width * sizeof(uint32_t); + fbimg->w = width; + fbimg->h = height; + fbimg->format = NK_FONT_ATLAS_RGBA32; + return nk_image_ptr(fbimg); +} static void texture_init(void) { struct nk_font_atlas *atlas; - nk_sdl_font_stash_begin(&atlas); + if (fb_context) { + nk_rawfb_font_stash_begin(fb_context, &atlas); + } else { +#ifndef DISABLE_OPENGL + nk_sdl_font_stash_begin(&atlas); +#endif + } uint32_t font_size; uint8_t *font = default_font(&font_size); if (!font) { @@ -1985,11 +2021,25 @@ static void texture_init(void) } def_font = nk_font_atlas_add_from_memory(atlas, font, font_size, render_height() / 16, NULL); free(font); - nk_sdl_font_stash_end(); + if (fb_context) { + nk_rawfb_font_stash_end(fb_context); + } else { +#ifndef DISABLE_OPENGL + nk_sdl_font_stash_end(); +#endif + } nk_style_set_font(context, &def_font->handle); for (uint32_t i = 0; i < num_ui_images; i++) { - ui_images[i]->ui = load_image_texture(ui_images[i]->image_data, ui_images[i]->width, ui_images[i]->height); +#ifndef DISABLE_OPENGL + if (fb_context) { +#endif + ui_images[i]->ui = load_image_rawfb(ui_images[i]->image_data, ui_images[i]->width, ui_images[i]->height); +#ifndef DISABLE_OPENGL + } else { + ui_images[i]->ui = load_image_texture(ui_images[i]->image_data, ui_images[i]->width, ui_images[i]->height); + } +#endif } } @@ -2040,10 +2090,10 @@ uint8_t is_nuklear_active(void) uint8_t is_nuklear_available(void) { - if (!render_has_gl()) { + /*if (!render_has_gl()) { //currently no fallback if GL2 unavailable return 0; - } + }*/ char *style = tern_find_path(config, "ui\0style\0", TVAL_PTR).ptrval; if (!style) { return 1; @@ -2093,6 +2143,16 @@ ui_image *load_ui_image(char *name) void blastem_nuklear_init(uint8_t file_loaded) { context = nk_sdl_init(render_get_window()); +#ifndef DISABLE_OPENGL + if (render_has_gl()) { + nk_sdl_device_create(); + } else { +#endif + fb_context = nk_rawfb_init(NULL, context, render_width(), render_height(), 0); + render_set_ui_fb_resize_handler(fb_resize); +#ifndef DISABLE_OPENGL + } +#endif style_init(); controller_360 = load_ui_image("images/360.png"); diff --git a/nuklear_ui/nuklear_rawfb.h b/nuklear_ui/nuklear_rawfb.h new file mode 100644 index 0000000..7dde432 --- /dev/null +++ b/nuklear_ui/nuklear_rawfb.h @@ -0,0 +1,1007 @@ +/* + * MIT License + * + * Copyright (c) 2016-2017 Patrick Rudolph <siro@das-labor.org> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. +*/ +/* + * ============================================================== + * + * API + * + * =============================================================== + */ +#ifndef NK_RAWFB_H_ +#define NK_RAWFB_H_ + +struct rawfb_context; + +/* All functions are thread-safe */ +NK_API struct rawfb_context *nk_rawfb_init(void *fb, struct nk_context *context, const unsigned int w, const unsigned int h, const unsigned int pitch); +NK_API void nk_rawfb_render(const struct rawfb_context *rawfb, const struct nk_color clear, const unsigned char enable_clear); +NK_API void nk_rawfb_shutdown(struct rawfb_context *rawfb); +NK_API void nk_rawfb_resize_fb(struct rawfb_context *rawfb, void *fb, const unsigned int w, const unsigned int h, const unsigned int pitch); + +#endif +/* + * ============================================================== + * + * IMPLEMENTATION + * + * =============================================================== + */ +#ifdef NK_RAWFB_IMPLEMENTATION + +struct rawfb_image { + void *pixels; + int w, h, pitch; + enum nk_font_atlas_format format; +}; +struct rawfb_context { + struct nk_context *ctx; + struct nk_rect scissors; + struct rawfb_image fb; + struct rawfb_image font_tex; + struct nk_font_atlas atlas; +}; + +#ifndef MIN +#define MIN(a,b) ((a) < (b) ? (a) : (b)) +#endif +#ifndef MAX +#define MAX(a,b) ((a) < (b) ? (b) : (a)) +#endif + +static unsigned int +nk_color_from_byte(const nk_byte *c) +{ + unsigned int res = 0; +#if defined(RAWFB_RGBX_8888) + res |= (unsigned int)c[0] << 16; + res |= (unsigned int)c[1] << 8; + res |= (unsigned int)c[2] << 0; +#elif defined(RAWFB_XRGB_8888) + res = ((unsigned int *)c)[0]; +#else +#error Define one of RAWFB_RGBX_8888 , RAWFB_XRGB_8888 +#endif + return (res); +} + +static void +nk_rawfb_setpixel(const struct rawfb_context *rawfb, + const short x0, const short y0, const struct nk_color col) +{ + unsigned int c = nk_color_from_byte(&col.r); + unsigned char *pixels = rawfb->fb.pixels; + unsigned int *ptr; + + pixels += y0 * rawfb->fb.pitch; + ptr = (unsigned int *)pixels; + ptr += x0; + + if (y0 < rawfb->scissors.h && y0 >= rawfb->scissors.y && + x0 >= rawfb->scissors.x && x0 < rawfb->scissors.w) + *ptr = c; +} + +static void +nk_rawfb_line_horizontal(const struct rawfb_context *rawfb, + const short x0, const short y, const short x1, const struct nk_color col) +{ + /* This function is called the most. Try to optimize it a bit... + * It does not check for scissors or image borders. + * The caller has to make sure it does no exceed bounds. */ + unsigned int i, n; + unsigned int c[16]; + unsigned char *pixels = rawfb->fb.pixels; + unsigned int *ptr; + + pixels += y * rawfb->fb.pitch; + ptr = (unsigned int *)pixels; + ptr += x0; + + n = x1 - x0; + for (i = 0; i < sizeof(c) / sizeof(c[0]); i++) + c[i] = nk_color_from_byte(&col.r); + + while (n > 16) { + memcpy((void *)ptr, c, sizeof(c)); + n -= 16; ptr += 16; + } for (i = 0; i < n; i++) + ptr[i] = c[i]; +} + +static void +nk_rawfb_imagesetpixel(const struct rawfb_image *img, + const int x0, const int y0, const struct nk_color col) +{ + unsigned char *ptr; + NK_ASSERT(img); + if (y0 < img->h && y0 > 0 && x0 > 0 && x0 < img->w) { + ptr = img->pixels; + if (img->format == NK_FONT_ATLAS_ALPHA8) { + ptr += img->pitch * y0; + ptr[x0] = col.a; + } else { + ptr += img->pitch * y0; + ((struct nk_color *)ptr)[x0] = col; + } + } +} + +static struct nk_color +nk_image_getpixel(const struct rawfb_image *img, const int x0, const int y0) +{ + struct nk_color col = {0, 0, 0, 0}; + unsigned char *ptr; + NK_ASSERT(img); + if (y0 < img->h && y0 > 0 && x0 > 0 && x0 < img->w) { + ptr = img->pixels; + if (img->format == NK_FONT_ATLAS_ALPHA8) { + ptr += img->pitch * y0; + col.a = ptr[x0]; + col.b = col.g = col.r = 0xff; + } else { + ptr += img->pitch * y0; + col = ((struct nk_color *)ptr)[x0]; + } + } return col; +} + +static void +nk_image_blendpixel(const struct rawfb_image *img, + const int x0, const int y0, struct nk_color col) +{ + struct nk_color col2; + unsigned char inv_a; + if (col.a == 0) + return; + + inv_a = 0xff - col.a; + col2 = nk_image_getpixel(img, x0, y0); + col.r = (col.r * col.a + col2.r * inv_a) >> 8; + col.g = (col.g * col.a + col2.g * inv_a) >> 8; + col.b = (col.b * col.a + col2.b * inv_a) >> 8; + nk_rawfb_imagesetpixel(img, x0, y0, col); +} + +static void +nk_rawfb_scissor(struct rawfb_context *rawfb, + const float x, + const float y, + const float w, + const float h) +{ + rawfb->scissors.x = MIN(MAX(x, 0), rawfb->fb.w); + rawfb->scissors.y = MIN(MAX(y, 0), rawfb->fb.h); + rawfb->scissors.w = MIN(MAX(w + x, 0), rawfb->fb.w); + rawfb->scissors.h = MIN(MAX(h + y, 0), rawfb->fb.h); +} + +static void +nk_rawfb_stroke_line(const struct rawfb_context *rawfb, + short x0, short y0, short x1, short y1, + const unsigned int line_thickness, const struct nk_color col) +{ + short tmp; + int dy, dx, stepx, stepy; + + dy = y1 - y0; + dx = x1 - x0; + + /* fast path */ + if (dy == 0) { + if (dx == 0 || y0 >= rawfb->scissors.h || y0 < rawfb->scissors.y) + return; + + if (dx < 0) { + /* swap x0 and x1 */ + tmp = x1; + x1 = x0; + x0 = tmp; + } + x1 = MIN(rawfb->scissors.w - 1, x1); + x0 = MIN(rawfb->scissors.w - 1, x0); + x1 = MAX(rawfb->scissors.x, x1); + x0 = MAX(rawfb->scissors.x, x0); + nk_rawfb_line_horizontal(rawfb, x0, y0, x1, col); + return; + } + if (dy < 0) { + dy = -dy; + stepy = -1; + } else stepy = 1; + + if (dx < 0) { + dx = -dx; + stepx = -1; + } else stepx = 1; + + dy <<= 1; + dx <<= 1; + + nk_rawfb_setpixel(rawfb, x0, y0, col); + if (dx > dy) { + int fraction = dy - (dx >> 1); + while (x0 != x1) { + if (fraction >= 0) { + y0 += stepy; + fraction -= dx; + } + x0 += stepx; + fraction += dy; + nk_rawfb_setpixel(rawfb, x0, y0, col); + } + } else { + int fraction = dx - (dy >> 1); + while (y0 != y1) { + if (fraction >= 0) { + x0 += stepx; + fraction -= dy; + } + y0 += stepy; + fraction += dx; + nk_rawfb_setpixel(rawfb, x0, y0, col); + } + } +} + +static void +nk_rawfb_fill_polygon(const struct rawfb_context *rawfb, + const struct nk_vec2i *pnts, int count, const struct nk_color col) +{ + int i = 0; + #define MAX_POINTS 64 + int left = 10000, top = 10000, bottom = 0, right = 0; + int nodes, nodeX[MAX_POINTS], pixelX, pixelY, j, swap ; + + if (count == 0) return; + if (count > MAX_POINTS) + count = MAX_POINTS; + + /* Get polygon dimensions */ + for (i = 0; i < count; i++) { + if (left > pnts[i].x) + left = pnts[i].x; + if (right < pnts[i].x) + right = pnts[i].x; + if (top > pnts[i].y) + top = pnts[i].y; + if (bottom < pnts[i].y) + bottom = pnts[i].y; + } bottom++; right++; + + /* Polygon scanline algorithm released under public-domain by Darel Rex Finley, 2007 */ + /* Loop through the rows of the image. */ + for (pixelY = top; pixelY < bottom; pixelY ++) { + nodes = 0; /* Build a list of nodes. */ + j = count - 1; + for (i = 0; i < count; i++) { + if (((pnts[i].y < pixelY) && (pnts[j].y >= pixelY)) || + ((pnts[j].y < pixelY) && (pnts[i].y >= pixelY))) { + nodeX[nodes++]= (int)((float)pnts[i].x + + ((float)pixelY - (float)pnts[i].y) / ((float)pnts[j].y - (float)pnts[i].y) + * ((float)pnts[j].x - (float)pnts[i].x)); + } j = i; + } + + /* Sort the nodes, via a simple “Bubble” sort. */ + i = 0; + while (i < nodes - 1) { + if (nodeX[i] > nodeX[i+1]) { + swap = nodeX[i]; + nodeX[i] = nodeX[i+1]; + nodeX[i+1] = swap; + if (i) i--; + } else i++; + } + /* Fill the pixels between node pairs. */ + for (i = 0; i < nodes; i += 2) { + if (nodeX[i+0] >= right) break; + if (nodeX[i+1] > left) { + if (nodeX[i+0] < left) nodeX[i+0] = left ; + if (nodeX[i+1] > right) nodeX[i+1] = right; + for (pixelX = nodeX[i]; pixelX < nodeX[i + 1]; pixelX++) + nk_rawfb_setpixel(rawfb, pixelX, pixelY, col); + } + } + } + #undef MAX_POINTS +} + +static void +nk_rawfb_stroke_arc(const struct rawfb_context *rawfb, + short x0, short y0, short w, short h, const short s, + const short line_thickness, const struct nk_color col) +{ + /* Bresenham's ellipses - modified to draw one quarter */ + const int a2 = (w * w) / 4; + const int b2 = (h * h) / 4; + const int fa2 = 4 * a2, fb2 = 4 * b2; + int x, y, sigma; + + if (s != 0 && s != 90 && s != 180 && s != 270) return; + if (w < 1 || h < 1) return; + + /* Convert upper left to center */ + h = (h + 1) / 2; + w = (w + 1) / 2; + x0 += w; y0 += h; + + /* First half */ + for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) { + if (s == 180) + nk_rawfb_setpixel(rawfb, x0 + x, y0 + y, col); + else if (s == 270) + nk_rawfb_setpixel(rawfb, x0 - x, y0 + y, col); + else if (s == 0) + nk_rawfb_setpixel(rawfb, x0 + x, y0 - y, col); + else if (s == 90) + nk_rawfb_setpixel(rawfb, x0 - x, y0 - y, col); + if (sigma >= 0) { + sigma += fa2 * (1 - y); + y--; + } sigma += b2 * ((4 * x) + 6); + } + + /* Second half */ + for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) { + if (s == 180) + nk_rawfb_setpixel(rawfb, x0 + x, y0 + y, col); + else if (s == 270) + nk_rawfb_setpixel(rawfb, x0 - x, y0 + y, col); + else if (s == 0) + nk_rawfb_setpixel(rawfb, x0 + x, y0 - y, col); + else if (s == 90) + nk_rawfb_setpixel(rawfb, x0 - x, y0 - y, col); + if (sigma >= 0) { + sigma += fb2 * (1 - x); + x--; + } sigma += a2 * ((4 * y) + 6); + } +} + +static void +nk_rawfb_fill_arc(const struct rawfb_context *rawfb, short x0, short y0, + short w, short h, const short s, const struct nk_color col) +{ + /* Bresenham's ellipses - modified to fill one quarter */ + const int a2 = (w * w) / 4; + const int b2 = (h * h) / 4; + const int fa2 = 4 * a2, fb2 = 4 * b2; + int x, y, sigma; + struct nk_vec2i pnts[3]; + if (w < 1 || h < 1) return; + if (s != 0 && s != 90 && s != 180 && s != 270) + return; + + /* Convert upper left to center */ + h = (h + 1) / 2; + w = (w + 1) / 2; + x0 += w; + y0 += h; + + pnts[0].x = x0; + pnts[0].y = y0; + pnts[2].x = x0; + pnts[2].y = y0; + + /* First half */ + for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) { + if (s == 180) { + pnts[1].x = x0 + x; pnts[1].y = y0 + y; + } else if (s == 270) { + pnts[1].x = x0 - x; pnts[1].y = y0 + y; + } else if (s == 0) { + pnts[1].x = x0 + x; pnts[1].y = y0 - y; + } else if (s == 90) { + pnts[1].x = x0 - x; pnts[1].y = y0 - y; + } + nk_rawfb_fill_polygon(rawfb, pnts, 3, col); + pnts[2] = pnts[1]; + if (sigma >= 0) { + sigma += fa2 * (1 - y); + y--; + } sigma += b2 * ((4 * x) + 6); + } + + /* Second half */ + for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) { + if (s == 180) { + pnts[1].x = x0 + x; pnts[1].y = y0 + y; + } else if (s == 270) { + pnts[1].x = x0 - x; pnts[1].y = y0 + y; + } else if (s == 0) { + pnts[1].x = x0 + x; pnts[1].y = y0 - y; + } else if (s == 90) { + pnts[1].x = x0 - x; pnts[1].y = y0 - y; + } + nk_rawfb_fill_polygon(rawfb, pnts, 3, col); + pnts[2] = pnts[1]; + if (sigma >= 0) { + sigma += fb2 * (1 - x); + x--; + } sigma += a2 * ((4 * y) + 6); + } +} + +static void +nk_rawfb_stroke_rect(const struct rawfb_context *rawfb, + const short x, const short y, const short w, const short h, + const short r, const short line_thickness, const struct nk_color col) +{ + if (r == 0) { + nk_rawfb_stroke_line(rawfb, x, y, x + w, y, line_thickness, col); + nk_rawfb_stroke_line(rawfb, x, y + h, x + w, y + h, line_thickness, col); + nk_rawfb_stroke_line(rawfb, x, y, x, y + h, line_thickness, col); + nk_rawfb_stroke_line(rawfb, x + w, y, x + w, y + h, line_thickness, col); + } else { + const short xc = x + r; + const short yc = y + r; + const short wc = (short)(w - 2 * r); + const short hc = (short)(h - 2 * r); + + nk_rawfb_stroke_line(rawfb, xc, y, xc + wc, y, line_thickness, col); + nk_rawfb_stroke_line(rawfb, x + w, yc, x + w, yc + hc, line_thickness, col); + nk_rawfb_stroke_line(rawfb, xc, y + h, xc + wc, y + h, line_thickness, col); + nk_rawfb_stroke_line(rawfb, x, yc, x, yc + hc, line_thickness, col); + + nk_rawfb_stroke_arc(rawfb, xc + wc - r, y, + (unsigned)r*2, (unsigned)r*2, 0 , line_thickness, col); + nk_rawfb_stroke_arc(rawfb, x, y, + (unsigned)r*2, (unsigned)r*2, 90 , line_thickness, col); + nk_rawfb_stroke_arc(rawfb, x, yc + hc - r, + (unsigned)r*2, (unsigned)r*2, 270 , line_thickness, col); + nk_rawfb_stroke_arc(rawfb, xc + wc - r, yc + hc - r, + (unsigned)r*2, (unsigned)r*2, 180 , line_thickness, col); + } +} + +static void +nk_rawfb_fill_rect(const struct rawfb_context *rawfb, + const short x, const short y, const short w, const short h, + const short r, const struct nk_color col) +{ + int i; + if (r == 0) { + for (i = 0; i < h; i++) + nk_rawfb_stroke_line(rawfb, x, y + i, x + w, y + i, 1, col); + } else { + const short xc = x + r; + const short yc = y + r; + const short wc = (short)(w - 2 * r); + const short hc = (short)(h - 2 * r); + + struct nk_vec2i pnts[12]; + pnts[0].x = x; + pnts[0].y = yc; + pnts[1].x = xc; + pnts[1].y = yc; + pnts[2].x = xc; + pnts[2].y = y; + + pnts[3].x = xc + wc; + pnts[3].y = y; + pnts[4].x = xc + wc; + pnts[4].y = yc; + pnts[5].x = x + w; + pnts[5].y = yc; + + pnts[6].x = x + w; + pnts[6].y = yc + hc; + pnts[7].x = xc + wc; + pnts[7].y = yc + hc; + pnts[8].x = xc + wc; + pnts[8].y = y + h; + + pnts[9].x = xc; + pnts[9].y = y + h; + pnts[10].x = xc; + pnts[10].y = yc + hc; + pnts[11].x = x; + pnts[11].y = yc + hc; + + nk_rawfb_fill_polygon(rawfb, pnts, 12, col); + + nk_rawfb_fill_arc(rawfb, xc + wc - r, y, + (unsigned)r*2, (unsigned)r*2, 0 , col); + nk_rawfb_fill_arc(rawfb, x, y, + (unsigned)r*2, (unsigned)r*2, 90 , col); + nk_rawfb_fill_arc(rawfb, x, yc + hc - r, + (unsigned)r*2, (unsigned)r*2, 270 , col); + nk_rawfb_fill_arc(rawfb, xc + wc - r, yc + hc - r, + (unsigned)r*2, (unsigned)r*2, 180 , col); + } +} + +static void +nk_rawfb_fill_triangle(const struct rawfb_context *rawfb, + const short x0, const short y0, const short x1, const short y1, + const short x2, const short y2, const struct nk_color col) +{ + struct nk_vec2i pnts[3]; + pnts[0].x = x0; + pnts[0].y = y0; + pnts[1].x = x1; + pnts[1].y = y1; + pnts[2].x = x2; + pnts[2].y = y2; + nk_rawfb_fill_polygon(rawfb, pnts, 3, col); +} + +static void +nk_rawfb_stroke_triangle(const struct rawfb_context *rawfb, + const short x0, const short y0, const short x1, const short y1, + const short x2, const short y2, const unsigned short line_thickness, + const struct nk_color col) +{ + nk_rawfb_stroke_line(rawfb, x0, y0, x1, y1, line_thickness, col); + nk_rawfb_stroke_line(rawfb, x1, y1, x2, y2, line_thickness, col); + nk_rawfb_stroke_line(rawfb, x2, y2, x0, y0, line_thickness, col); +} + +static void +nk_rawfb_stroke_polygon(const struct rawfb_context *rawfb, + const struct nk_vec2i *pnts, const int count, + const unsigned short line_thickness, const struct nk_color col) +{ + int i; + for (i = 1; i < count; ++i) + nk_rawfb_stroke_line(rawfb, pnts[i-1].x, pnts[i-1].y, pnts[i].x, + pnts[i].y, line_thickness, col); + nk_rawfb_stroke_line(rawfb, pnts[count-1].x, pnts[count-1].y, + pnts[0].x, pnts[0].y, line_thickness, col); +} + +static void +nk_rawfb_stroke_polyline(const struct rawfb_context *rawfb, + const struct nk_vec2i *pnts, const int count, + const unsigned short line_thickness, const struct nk_color col) +{ + int i; + for (i = 0; i < count-1; ++i) + nk_rawfb_stroke_line(rawfb, pnts[i].x, pnts[i].y, + pnts[i+1].x, pnts[i+1].y, line_thickness, col); +} + +static void +nk_rawfb_fill_circle(const struct rawfb_context *rawfb, + short x0, short y0, short w, short h, const struct nk_color col) +{ + /* Bresenham's ellipses */ + const int a2 = (w * w) / 4; + const int b2 = (h * h) / 4; + const int fa2 = 4 * a2, fb2 = 4 * b2; + int x, y, sigma; + + /* Convert upper left to center */ + h = (h + 1) / 2; + w = (w + 1) / 2; + x0 += w; + y0 += h; + + /* First half */ + for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) { + nk_rawfb_stroke_line(rawfb, x0 - x, y0 + y, x0 + x, y0 + y, 1, col); + nk_rawfb_stroke_line(rawfb, x0 - x, y0 - y, x0 + x, y0 - y, 1, col); + if (sigma >= 0) { + sigma += fa2 * (1 - y); + y--; + } sigma += b2 * ((4 * x) + 6); + } + /* Second half */ + for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) { + nk_rawfb_stroke_line(rawfb, x0 - x, y0 + y, x0 + x, y0 + y, 1, col); + nk_rawfb_stroke_line(rawfb, x0 - x, y0 - y, x0 + x, y0 - y, 1, col); + if (sigma >= 0) { + sigma += fb2 * (1 - x); + x--; + } sigma += a2 * ((4 * y) + 6); + } +} + +static void +nk_rawfb_stroke_circle(const struct rawfb_context *rawfb, + short x0, short y0, short w, short h, const short line_thickness, + const struct nk_color col) +{ + /* Bresenham's ellipses */ + const int a2 = (w * w) / 4; + const int b2 = (h * h) / 4; + const int fa2 = 4 * a2, fb2 = 4 * b2; + int x, y, sigma; + + /* Convert upper left to center */ + h = (h + 1) / 2; + w = (w + 1) / 2; + x0 += w; + y0 += h; + + /* First half */ + for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) { + nk_rawfb_setpixel(rawfb, x0 + x, y0 + y, col); + nk_rawfb_setpixel(rawfb, x0 - x, y0 + y, col); + nk_rawfb_setpixel(rawfb, x0 + x, y0 - y, col); + nk_rawfb_setpixel(rawfb, x0 - x, y0 - y, col); + if (sigma >= 0) { + sigma += fa2 * (1 - y); + y--; + } sigma += b2 * ((4 * x) + 6); + } + /* Second half */ + for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) { + nk_rawfb_setpixel(rawfb, x0 + x, y0 + y, col); + nk_rawfb_setpixel(rawfb, x0 - x, y0 + y, col); + nk_rawfb_setpixel(rawfb, x0 + x, y0 - y, col); + nk_rawfb_setpixel(rawfb, x0 - x, y0 - y, col); + if (sigma >= 0) { + sigma += fb2 * (1 - x); + x--; + } sigma += a2 * ((4 * y) + 6); + } +} + +static void +nk_rawfb_stroke_curve(const struct rawfb_context *rawfb, + const struct nk_vec2i p1, const struct nk_vec2i p2, + const struct nk_vec2i p3, const struct nk_vec2i p4, + const unsigned int num_segments, const unsigned short line_thickness, + const struct nk_color col) +{ + unsigned int i_step, segments; + float t_step; + struct nk_vec2i last = p1; + + segments = MAX(num_segments, 1); + t_step = 1.0f/(float)segments; + for (i_step = 1; i_step <= segments; ++i_step) { + float t = t_step * (float)i_step; + float u = 1.0f - t; + float w1 = u*u*u; + float w2 = 3*u*u*t; + float w3 = 3*u*t*t; + float w4 = t * t *t; + float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x; + float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y; + nk_rawfb_stroke_line(rawfb, last.x, last.y, + (short)x, (short)y, line_thickness,col); + last.x = (short)x; last.y = (short)y; + } +} + +static void +nk_rawfb_clear(const struct rawfb_context *rawfb, const struct nk_color col) +{ + nk_rawfb_fill_rect(rawfb, 0, 0, rawfb->fb.w, rawfb->fb.h, 0, col); +} + +NK_API struct rawfb_context* +nk_rawfb_init(void *fb, struct nk_context *context, const unsigned int w, const unsigned int h, + const unsigned int pitch) +{ + struct rawfb_context *rawfb; + rawfb = malloc(sizeof(struct rawfb_context)); + if (!rawfb) + return NULL; + + nk_memset(rawfb, 0, sizeof(struct rawfb_context)); + rawfb->font_tex.format = NK_FONT_ATLAS_ALPHA8; + rawfb->font_tex.w = rawfb->font_tex.h = 0; + + rawfb->fb.pixels = fb; + rawfb->fb.w= w; + rawfb->fb.h = h; + +#if defined(RAWFB_XRGB_8888) || defined(RAWFB_RGBX_8888) + rawfb->fb.format = NK_FONT_ATLAS_RGBA32; + rawfb->fb.pitch = pitch; +#else + #error Fixme +#endif + + rawfb->ctx = context; + nk_rawfb_scissor(rawfb, 0, 0, rawfb->fb.w, rawfb->fb.h); + + return rawfb; +} + +NK_API void +nk_rawfb_font_stash_begin(struct rawfb_context *rawfb, struct nk_font_atlas **atlas) +{ + nk_font_atlas_init_default(&rawfb->atlas); + nk_font_atlas_begin(&rawfb->atlas); + *atlas = &rawfb->atlas; +} + +NK_API void +nk_rawfb_font_stash_end(struct rawfb_context *rawfb) +{ + const void *tex; + tex = nk_font_atlas_bake(&rawfb->atlas, &rawfb->font_tex.w, &rawfb->font_tex.h, rawfb->font_tex.format); + if (!tex) return; + + switch(rawfb->font_tex.format) { + case NK_FONT_ATLAS_ALPHA8: + rawfb->font_tex.pitch = rawfb->font_tex.w * 1; + break; + case NK_FONT_ATLAS_RGBA32: + rawfb->font_tex.pitch = rawfb->font_tex.w * 4; + break; + }; + /* Store the font texture in tex scratch memory */ + rawfb->font_tex.pixels = malloc(rawfb->font_tex.pitch * rawfb->font_tex.h); + memcpy(rawfb->font_tex.pixels, tex, rawfb->font_tex.pitch * rawfb->font_tex.h); + nk_font_atlas_end(&rawfb->atlas, nk_handle_ptr(NULL), NULL); + if (rawfb->atlas.default_font) + nk_style_set_font(rawfb->ctx, &rawfb->atlas.default_font->handle); + nk_style_load_all_cursors(rawfb->ctx, rawfb->atlas.cursors); +} + +static void +nk_rawfb_stretch_image(const struct rawfb_image *dst, + const struct rawfb_image *src, const struct nk_rect *dst_rect, + const struct nk_rect *src_rect, const struct nk_rect *dst_scissors) +{ + short i, j; + struct nk_color col; + float xinc = src_rect->w / dst_rect->w; + float yinc = src_rect->h / dst_rect->h; + float xoff = src_rect->x, yoff = src_rect->y; + + /* Simple nearest filtering rescaling */ + /* TODO: use bilinear filter */ + for (j = 0; j < (short)dst_rect->h; j++) { + for (i = 0; i < (short)dst_rect->w; i++) { + if (dst_scissors) { + if (i + (int)(dst_rect->x + 0.5f) < dst_scissors->x || i + (int)(dst_rect->x + 0.5f) >= dst_scissors->w) + continue; + if (j + (int)(dst_rect->y + 0.5f) < dst_scissors->y || j + (int)(dst_rect->y + 0.5f) >= dst_scissors->h) + continue; + } + col = nk_image_getpixel(src, (int)xoff, (int) yoff); + nk_image_blendpixel(dst, i + (int)(dst_rect->x + 0.5f), j + (int)(dst_rect->y + 0.5f), col); + xoff += xinc; + } + xoff = src_rect->x; + yoff += yinc; + } +} + +static void +nk_rawfb_font_query_font_glyph(nk_handle handle, const float height, + struct nk_user_font_glyph *glyph, const nk_rune codepoint, + const nk_rune next_codepoint) +{ + float scale; + const struct nk_font_glyph *g; + struct nk_font *font; + NK_ASSERT(glyph); + NK_UNUSED(next_codepoint); + + font = (struct nk_font*)handle.ptr; + NK_ASSERT(font); + NK_ASSERT(font->glyphs); + if (!font || !glyph) + return; + + scale = height/font->info.height; + g = nk_font_find_glyph(font, codepoint); + glyph->width = (g->x1 - g->x0) * scale; + glyph->height = (g->y1 - g->y0) * scale; + glyph->offset = nk_vec2(g->x0 * scale, g->y0 * scale); + glyph->xadvance = (g->xadvance * scale); + glyph->uv[0] = nk_vec2(g->u0, g->v0); + glyph->uv[1] = nk_vec2(g->u1, g->v1); +} + +NK_API void +nk_rawfb_draw_text(const struct rawfb_context *rawfb, + const struct nk_user_font *font, const struct nk_rect rect, + const char *text, const int len, const float font_height, + const struct nk_color fg) +{ + float x = 0; + int text_len = 0; + nk_rune unicode = 0; + nk_rune next = 0; + int glyph_len = 0; + int next_glyph_len = 0; + struct nk_user_font_glyph g; + if (!len || !text) return; + + x = 0; + glyph_len = nk_utf_decode(text, &unicode, len); + if (!glyph_len) return; + + /* draw every glyph image */ + while (text_len < len && glyph_len) { + struct nk_rect src_rect; + struct nk_rect dst_rect; + float char_width = 0; + if (unicode == NK_UTF_INVALID) break; + + /* query currently drawn glyph information */ + next_glyph_len = nk_utf_decode(text + text_len + glyph_len, &next, (int)len - text_len); + nk_rawfb_font_query_font_glyph(font->userdata, font_height, &g, unicode, + (next == NK_UTF_INVALID) ? '\0' : next); + + /* calculate and draw glyph drawing rectangle and image */ + char_width = g.xadvance; + src_rect.x = g.uv[0].x * rawfb->font_tex.w; + src_rect.y = g.uv[0].y * rawfb->font_tex.h; + src_rect.w = g.uv[1].x * rawfb->font_tex.w - g.uv[0].x * rawfb->font_tex.w; + src_rect.h = g.uv[1].y * rawfb->font_tex.h - g.uv[0].y * rawfb->font_tex.h; + + dst_rect.x = x + g.offset.x + rect.x; + dst_rect.y = g.offset.y + rect.y; + dst_rect.w = ceilf(g.width); + dst_rect.h = ceilf(g.height); + + /* TODO: account fg */ + /* Use software rescaling to blit glyph from font_text to framebuffer */ + nk_rawfb_stretch_image(&rawfb->fb, &rawfb->font_tex, &dst_rect, &src_rect, &rawfb->scissors); + + /* offset next glyph */ + text_len += glyph_len; + x += char_width; + glyph_len = next_glyph_len; + unicode = next; + } +} + +NK_API void +nk_rawfb_drawimage(const struct rawfb_context *rawfb, + const int x, const int y, const int w, const int h, + const struct nk_image *img, const struct nk_color *col) +{ + struct nk_rect src_rect; + struct nk_rect dst_rect; + + const struct rawfb_image *rfb_img = img->handle.ptr; + if (!rfb_img) { + rfb_img = &rawfb->font_tex; + } + + src_rect.x = img->region[0]; + src_rect.y = img->region[1]; + if (nk_image_is_subimage(img)) { + src_rect.w = img->region[2]; + src_rect.h = img->region[3]; + } else { + src_rect.w = rfb_img->w; + src_rect.h = rfb_img->h; + } + + dst_rect.x = x; + dst_rect.y = y; + dst_rect.w = w; + dst_rect.h = h; + nk_rawfb_stretch_image(&rawfb->fb, rfb_img, &dst_rect, &src_rect, &rawfb->scissors); +} + +NK_API void +nk_rawfb_shutdown(struct rawfb_context *rawfb) +{ + nk_memset(rawfb, 0, sizeof(struct rawfb_context)); + free(rawfb); +} + +NK_API void +nk_rawfb_resize_fb(struct rawfb_context *rawfb, + void *fb, + const unsigned int w, + const unsigned int h, + const unsigned int pitch) +{ + rawfb->fb.w = w; + rawfb->fb.h = h; + rawfb->fb.pixels = fb; + rawfb->fb.pitch = pitch; +} + +NK_API void +nk_rawfb_render(const struct rawfb_context *rawfb, + const struct nk_color clear, + const unsigned char enable_clear) +{ + const struct nk_command *cmd; + if (enable_clear) + nk_rawfb_clear(rawfb, clear); + + nk_foreach(cmd, rawfb->ctx) { + switch (cmd->type) { + case NK_COMMAND_NOP: break; + case NK_COMMAND_SCISSOR: { + const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd; + nk_rawfb_scissor((struct rawfb_context *)rawfb, s->x, s->y, s->w, s->h); + } break; + case NK_COMMAND_LINE: { + const struct nk_command_line *l = (const struct nk_command_line *)cmd; + nk_rawfb_stroke_line(rawfb, l->begin.x, l->begin.y, l->end.x, + l->end.y, l->line_thickness, l->color); + } break; + case NK_COMMAND_RECT: { + const struct nk_command_rect *r = (const struct nk_command_rect *)cmd; + nk_rawfb_stroke_rect(rawfb, r->x, r->y, r->w, r->h, + (unsigned short)r->rounding, r->line_thickness, r->color); + } break; + case NK_COMMAND_RECT_FILLED: { + const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd; + nk_rawfb_fill_rect(rawfb, r->x, r->y, r->w, r->h, + (unsigned short)r->rounding, r->color); + } break; + case NK_COMMAND_CIRCLE: { + const struct nk_command_circle *c = (const struct nk_command_circle *)cmd; + nk_rawfb_stroke_circle(rawfb, c->x, c->y, c->w, c->h, c->line_thickness, c->color); + } break; + case NK_COMMAND_CIRCLE_FILLED: { + const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd; + nk_rawfb_fill_circle(rawfb, c->x, c->y, c->w, c->h, c->color); + } break; + case NK_COMMAND_TRIANGLE: { + const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd; + nk_rawfb_stroke_triangle(rawfb, t->a.x, t->a.y, t->b.x, t->b.y, + t->c.x, t->c.y, t->line_thickness, t->color); + } break; + case NK_COMMAND_TRIANGLE_FILLED: { + const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd; + nk_rawfb_fill_triangle(rawfb, t->a.x, t->a.y, t->b.x, t->b.y, + t->c.x, t->c.y, t->color); + } break; + case NK_COMMAND_POLYGON: { + const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd; + nk_rawfb_stroke_polygon(rawfb, p->points, p->point_count, p->line_thickness,p->color); + } break; + case NK_COMMAND_POLYGON_FILLED: { + const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd; + nk_rawfb_fill_polygon(rawfb, p->points, p->point_count, p->color); + } break; + case NK_COMMAND_POLYLINE: { + const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd; + nk_rawfb_stroke_polyline(rawfb, p->points, p->point_count, p->line_thickness, p->color); + } break; + case NK_COMMAND_TEXT: { + const struct nk_command_text *t = (const struct nk_command_text*)cmd; + nk_rawfb_draw_text(rawfb, t->font, nk_rect(t->x, t->y, t->w, t->h), + t->string, t->length, t->height, t->foreground); + } break; + case NK_COMMAND_CURVE: { + const struct nk_command_curve *q = (const struct nk_command_curve *)cmd; + nk_rawfb_stroke_curve(rawfb, q->begin, q->ctrl[0], q->ctrl[1], + q->end, 22, q->line_thickness, q->color); + } break; + case NK_COMMAND_RECT_MULTI_COLOR: + case NK_COMMAND_IMAGE: { + const struct nk_command_image *q = (const struct nk_command_image *)cmd; + nk_rawfb_drawimage(rawfb, q->x, q->y, q->w, q->h, &q->img, &q->col); + } break; + case NK_COMMAND_ARC: { + assert(0 && "NK_COMMAND_ARC not implemented\n"); + } break; + case NK_COMMAND_ARC_FILLED: { + assert(0 && "NK_COMMAND_ARC_FILLED not implemented\n"); + } break; + default: break; + } + } nk_clear(rawfb->ctx); +} +#endif + diff --git a/nuklear_ui/nuklear_sdl_gles2.h b/nuklear_ui/nuklear_sdl_gles2.h index e038af5..31a4b8b 100644 --- a/nuklear_ui/nuklear_sdl_gles2.h +++ b/nuklear_ui/nuklear_sdl_gles2.h @@ -47,6 +47,7 @@ NK_API void nk_sdl_device_create(void); #include <string.h> +#ifndef DISABLE_OPENGL struct nk_sdl_device { struct nk_buffer cmds; struct nk_draw_null_texture null; @@ -69,10 +70,13 @@ struct nk_sdl_vertex { GLfloat uv[2]; nk_byte col[4]; }; +#endif static struct nk_sdl { SDL_Window *win; +#ifndef DISABLE_OPENGL struct nk_sdl_device ogl; +#endif struct nk_context ctx; struct nk_font_atlas atlas; } sdl; @@ -85,7 +89,7 @@ static struct nk_sdl { #define DECLARE_PRECISION #endif - +#ifndef DISABLE_OPENGL NK_API void nk_sdl_device_create(void) { @@ -296,6 +300,7 @@ nk_sdl_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_b glDisable(GL_BLEND); glDisable(GL_SCISSOR_TEST); } +#endif static void nk_sdl_clipbard_paste(nk_handle usr, struct nk_text_edit *edit) @@ -327,10 +332,10 @@ nk_sdl_init(SDL_Window *win) sdl.ctx.clip.copy = nk_sdl_clipbard_copy; sdl.ctx.clip.paste = nk_sdl_clipbard_paste; sdl.ctx.clip.userdata = nk_handle_ptr(0); - nk_sdl_device_create(); return &sdl.ctx; } +#ifndef DISABLE_OPENGL NK_API void nk_sdl_font_stash_begin(struct nk_font_atlas **atlas) { @@ -350,6 +355,7 @@ nk_sdl_font_stash_end(void) nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle); } +#endif NK_API int nk_sdl_handle_event(SDL_Event *evt) @@ -447,7 +453,9 @@ void nk_sdl_shutdown(void) { nk_font_atlas_clear(&sdl.atlas); nk_free(&sdl.ctx); +#ifndef DISABLE_OPENGL nk_sdl_device_destroy(); +#endif memset(&sdl, 0, sizeof(sdl)); } |