forked from enlightenment/efl
ector: move gradient generation api to draw library for reuse.
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5f9c54a1b2
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76e75dc105
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@ -280,72 +280,13 @@ _linear_helper_sse3(uint32_t *buffer, int length, Ector_Renderer_Software_Gradie
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#endif
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static inline double
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_ease_linear(double t)
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{
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return t;
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}
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static Eina_Bool
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_generate_gradient_color_table(Efl_Gfx_Gradient_Stop *gradient_stops, int stop_count, uint32_t *color_table, int size)
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{
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int dist, idist, pos = 0, i;
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Eina_Bool alpha = EINA_FALSE;
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Efl_Gfx_Gradient_Stop *curr, *next;
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uint32_t current_color, next_color;
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double delta, t, incr, fpos;
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assert(stop_count > 0);
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curr = gradient_stops;
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if (curr->a != 255) alpha = EINA_TRUE;
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current_color = DRAW_ARGB_JOIN(curr->a, curr->r, curr->g, curr->b);
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incr = 1.0 / (double)size;
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fpos = 1.5 * incr;
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color_table[pos++] = current_color;
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while (fpos <= curr->offset)
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{
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color_table[pos] = color_table[pos - 1];
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pos++;
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fpos += incr;
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}
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for (i = 0; i < stop_count - 1; ++i)
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{
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curr = (gradient_stops + i);
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next = (gradient_stops + i + 1);
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delta = 1/(next->offset - curr->offset);
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if (next->a != 255) alpha = EINA_TRUE;
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next_color = DRAW_ARGB_JOIN(next->a, next->r, next->g, next->b);
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while (fpos < next->offset && pos < size)
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{
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t = _ease_linear((fpos - curr->offset) * delta);
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dist = (int)(256 * t);
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idist = 256 - dist;
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color_table[pos] = draw_interpolate_256(current_color, idist, next_color, dist);
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++pos;
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fpos += incr;
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}
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current_color = next_color;
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}
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for (;pos < size; ++pos)
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color_table[pos] = current_color;
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// Make sure the last color stop is represented at the end of the table
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color_table[size-1] = current_color;
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return alpha;
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}
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static void
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_update_color_table(void *data, Ector_Software_Thread *t EINA_UNUSED)
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{
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Ector_Renderer_Software_Gradient_Data *gdata = data;
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gdata->color_table = malloc(GRADIENT_STOPTABLE_SIZE * 4);
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gdata->alpha = _generate_gradient_color_table(gdata->gd->colors, gdata->gd->colors_count,
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gdata->alpha = efl_draw_generate_gradient_color_table(gdata->gd->colors, gdata->gd->colors_count,
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gdata->color_table, GRADIENT_STOPTABLE_SIZE);
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}
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@ -29,6 +29,8 @@ Cspace_Convert_Func efl_draw_convert_func_get (Efl_Gfx_Colorspace origcs,
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int efl_draw_argb_premul(uint32_t *data, unsigned int len);
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void efl_draw_argb_unpremul(uint32_t *data, unsigned int len);
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Eina_Bool efl_draw_generate_gradient_color_table(Efl_Gfx_Gradient_Stop *gradient_stops, int stop_count, uint32_t *color_table, int size);
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/* common sw draw helpers */
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@ -276,6 +276,64 @@ efl_draw_func_span_get(Efl_Gfx_Render_Op op, uint32_t color, Eina_Bool src_alpha
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return func_for_mode[op];
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}
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static double
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_ease_linear(double t)
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{
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return t;
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}
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Eina_Bool
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efl_draw_generate_gradient_color_table(Efl_Gfx_Gradient_Stop *gradient_stops, int stop_count, uint32_t *color_table, int size)
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{
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int dist, idist, pos = 0, i;
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Eina_Bool alpha = EINA_FALSE;
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Efl_Gfx_Gradient_Stop *curr, *next;
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uint32_t current_color, next_color;
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double delta, t, incr, fpos;
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curr = gradient_stops;
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if (curr->a != 255) alpha = EINA_TRUE;
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current_color = DRAW_ARGB_JOIN(curr->a, curr->r, curr->g, curr->b);
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incr = 1.0 / (double)size;
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fpos = 1.5 * incr;
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color_table[pos++] = current_color;
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while (fpos <= curr->offset)
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{
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color_table[pos] = color_table[pos - 1];
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pos++;
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fpos += incr;
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}
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for (i = 0; i < stop_count - 1; ++i)
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{
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curr = (gradient_stops + i);
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next = (gradient_stops + i + 1);
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delta = 1/(next->offset - curr->offset);
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if (next->a != 255) alpha = EINA_TRUE;
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next_color = DRAW_ARGB_JOIN(next->a, next->r, next->g, next->b);
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while (fpos < next->offset && pos < size)
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{
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t = _ease_linear((fpos - curr->offset) * delta);
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dist = (int)(256 * t);
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idist = 256 - dist;
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color_table[pos] = draw_interpolate_256(current_color, idist, next_color, dist);
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++pos;
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fpos += incr;
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}
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current_color = next_color;
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}
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for (;pos < size; ++pos)
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color_table[pos] = current_color;
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// Make sure the last color stop is represented at the end of the table
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color_table[size-1] = current_color;
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return alpha;
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}
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int
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efl_draw_init(void)
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{
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