lv_draw_sw_blend.h

Functions

void lv_draw_sw_blend(struct _lv_draw_ctx_t *draw_ctx, const lv_draw_sw_blend_dsc_t *dsc)

Call the blend function of the draw_ctx.

Parameters:

• draw_ctx -- pointer to a draw context

• dsc -- pointer to an initialized blend descriptor

void lv_draw_sw_blend_basic(struct _lv_draw_ctx_t *draw_ctx, const lv_draw_sw_blend_dsc_t *dsc)

The basic blend function used with software rendering.

Parameters:

• draw_ctx -- pointer to a draw context

• dsc -- pointer to an initialized blend descriptor

struct lv_draw_sw_blend_dsc_t

Public Members

const lv_area_t *blend_area

The area with absolute coordinates to draw on draw_ctx->buf will be clipped to draw_ctx->clip_area

const lv_color_t *src_buf

Pointer to an image to blend. If set fill_color is ignored

lv_color_t color

Fill color

lv_opa_t *mask_buf

NULL if ignored, or an alpha mask to apply on blend_area

lv_draw_mask_res_t mask_res

The result of the previous mask operation

const lv_area_t *mask_area

The area of mask_buf with absolute coordinates

lv_opa_t opa

The overall opacity

lv_blend_mode_t blend_mode

E.g. LV_BLEND_MODE_ADDITIVE