mirror of
https://github.com/lvgl/lvgl.git
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feat(widget): Add lv_3dtexture widget and 3D draw task type (#8033)
Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
This commit is contained in:
Liam Howatt
GitHub
@@ -0,0 +1,76 @@
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.. _lv_3dtexture:
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=========================
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3D Texture (lv_3dtexture)
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=========================
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Overview
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********
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3D texture widgets are used to embed an external 3D graphics library's "texutre" primitive
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into an LVGL UI.
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.. _lv_3dtexture_parts_and_styles:
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Parts and Styles
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****************
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The size should be set to the actual size of the texture primitive.
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The opacity may also be changed.
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.. _lv_3dtexture_usage:
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Usage
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*****
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Requires a draw unit to be enabled which can draw the
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:cpp:enumerator:`LV_DRAW_TASK_TYPE_3D` draw task type.
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OpenGL is the first supported 3D graphics backend. The following must be enabled.
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- :c:macro:`LV_USE_3DTEXTURE`
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- :c:macro:`LV_USE_OPENGLES`
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- :c:macro:`LV_USE_DRAW_OPENGLES`
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See :ref:`LVGL's OpenGLES driver docs <opengl_es_driver>` to create a window and a
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display texture.
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The `lv_example_3dtexture <https://github.com/lvgl/lv_example_3dtexture>` repo is a
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demonstration of how to use the ``3dtexture`` widget to load glTF models with OpenGL
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and display them in LVGL.
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.. code-block:: c
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lv_obj_t * tex = lv_3dtexture_create(parent);
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/*Render something to the texture. You can replace it with your code.*/
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lv_3dtexture_id_t gltf_texture = render_gltf_model_to_opengl_texture(path, w, h, color);
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lv_3dtexture_set_src(tex, gltf_texture);
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lv_obj_set_size(tex, w, h);
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lv_obj_set_style_opa(tex, opa, 0);
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The real type of :cpp:type:`lv_3dtexture_id_t` depends on the active 3D graphics backend.
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With OpenGL, the type is ``unsigned int``.
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.. _lv_3dtexture_events:
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Events
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******
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3D Texture has no special event handling.
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.. _lv_3dtexture_example:
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Example
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*******
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See the `lv_example_3dtexture <https://github.com/lvgl/lv_example_3dtexture>` repo.
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.. _lv_3dtexture_api:
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API
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***
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@@ -776,6 +776,8 @@
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#define LV_USE_WIN 1
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#define LV_USE_3DTEXTURE 0
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/*==================
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* THEMES
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*==================*/
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@@ -83,6 +83,7 @@ extern "C" {
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#include "src/widgets/textarea/lv_textarea.h"
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#include "src/widgets/tileview/lv_tileview.h"
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#include "src/widgets/win/lv_win.h"
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#include "src/widgets/3dtexture/lv_3dtexture.h"
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#include "src/others/snapshot/lv_snapshot.h"
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#include "src/others/sysmon/lv_sysmon.h"
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@@ -96,6 +96,7 @@ extern "C" {
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#include "src/widgets/label/lv_label_private.h"
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#include "src/widgets/canvas/lv_canvas_private.h"
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#include "src/widgets/tabview/lv_tabview_private.h"
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#include "src/widgets/3dtexture/lv_3dtexture_private.h"
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#include "src/tick/lv_tick_private.h"
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#include "src/stdlib/builtin/lv_tlsf_private.h"
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#include "src/libs/rlottie/lv_rlottie_private.h"
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@@ -15,6 +15,7 @@
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#include "lv_draw_private.h"
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#include "lv_draw_mask_private.h"
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#include "lv_draw_vector_private.h"
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#include "lv_draw_3d.h"
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#include "sw/lv_draw_sw.h"
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#include "../display/lv_display_private.h"
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#include "../core/lv_global.h"
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@@ -581,6 +582,10 @@ static inline size_t get_draw_dsc_size(lv_draw_task_type_t type)
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#if LV_USE_VECTOR_GRAPHIC
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case LV_DRAW_TASK_TYPE_VECTOR:
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return sizeof(lv_draw_vector_task_dsc_t);
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#endif
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#if LV_USE_3DTEXTURE
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case LV_DRAW_TASK_TYPE_3D:
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return sizeof(lv_draw_3d_dsc_t);
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#endif
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/* Note that default is not added here because when adding new draw task type,
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* if forget to add case, the compiler will automatically report a warning.
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@@ -60,6 +60,9 @@ typedef enum {
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#if LV_USE_VECTOR_GRAPHIC
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LV_DRAW_TASK_TYPE_VECTOR,
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#endif
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#if LV_USE_3DTEXTURE
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LV_DRAW_TASK_TYPE_3D,
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#endif
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} lv_draw_task_type_t;
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typedef enum {
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@@ -0,0 +1,69 @@
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/**
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* @file lv_draw_3d.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_draw_3d.h"
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#if LV_USE_3DTEXTURE
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#include "lv_draw_private.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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/**********************
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* STATIC VARIABLES
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**********************/
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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void lv_draw_3d_dsc_init(lv_draw_3d_dsc_t * dsc)
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{
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lv_memzero(dsc, sizeof(lv_draw_3d_dsc_t));
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dsc->base.dsc_size = sizeof(lv_draw_3d_dsc_t);
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dsc->tex_id = LV_3DTEXTURE_ID_NULL;
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dsc->opa = LV_OPA_COVER;
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}
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lv_draw_3d_dsc_t * lv_draw_task_get_3d_dsc(lv_draw_task_t * task)
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{
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return task->type == LV_DRAW_TASK_TYPE_3D ? (lv_draw_3d_dsc_t *)task->draw_dsc : NULL;
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}
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void lv_draw_3d(lv_layer_t * layer, const lv_draw_3d_dsc_t * dsc, const lv_area_t * coords)
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{
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LV_PROFILER_DRAW_BEGIN;
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lv_draw_task_t * t = lv_draw_add_task(layer, coords, LV_DRAW_TASK_TYPE_3D);
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lv_memcpy(t->draw_dsc, dsc, sizeof(*dsc));
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lv_draw_finalize_task_creation(layer, t);
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LV_PROFILER_DRAW_END;
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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#endif /*LV_USE_3DTEXTURE*/
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@@ -0,0 +1,70 @@
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/**
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* @file lv_draw_3d.h
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*
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*/
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#ifndef LV_DRAW_3D_H
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#define LV_DRAW_3D_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "../lv_conf_internal.h"
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#if LV_USE_3DTEXTURE
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#include "lv_draw.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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typedef struct {
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lv_draw_dsc_base_t base;
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lv_3dtexture_id_t tex_id;
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lv_opa_t opa;
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} lv_draw_3d_dsc_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Initialize a 3D draw descriptor
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* @param dsc pointer to a draw descriptor
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*/
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void lv_draw_3d_dsc_init(lv_draw_3d_dsc_t * dsc);
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/**
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* Try to get a 3D draw descriptor from a draw task.
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* @param task draw task
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* @return the task's draw descriptor or NULL if the task is not of type LV_DRAW_TASK_TYPE_3D
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*/
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lv_draw_3d_dsc_t * lv_draw_task_get_3d_dsc(lv_draw_task_t * task);
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/**
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* Create a 3D draw task
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* @param layer pointer to a layer
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* @param dsc pointer to an initialized `lv_draw_3d_dsc_t` variable
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*/
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void lv_draw_3d(lv_layer_t * layer, const lv_draw_3d_dsc_t * dsc, const lv_area_t * coords);
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/**********************
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* MACROS
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**********************/
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#endif /*LV_USE_3DTEXTURE*/
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#ifdef __cplusplus
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} /*extern "C"*/
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#endif
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#endif /*LV_DRAW_3D_H*/
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@@ -22,6 +22,7 @@
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#include "../../draw/lv_draw_image.h"
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#include "../../draw/lv_draw_triangle.h"
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#include "../../draw/lv_draw_line.h"
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#include "../../draw/lv_draw_3d.h"
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#include "../../core/lv_obj.h"
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#include "../../core/lv_refr_private.h"
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#include "../../display/lv_display_private.h"
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@@ -75,6 +76,10 @@ static unsigned int layer_get_texture(lv_layer_t * layer);
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static unsigned int get_framebuffer(lv_draw_opengles_unit_t * u);
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static unsigned int create_texture(int32_t w, int32_t h, const void * data);
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#if LV_USE_3DTEXTURE
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static void lv_draw_opengles_3d(lv_draw_task_t * t, const lv_draw_3d_dsc_t * dsc, const lv_area_t * coords);
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#endif
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/**********************
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* STATIC VARIABLES
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**********************/
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@@ -223,7 +228,7 @@ static int32_t evaluate(lv_draw_unit_t * draw_unit, lv_draw_task_t * task)
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}
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/*If not refreshing the display probably it's a canvas rendering
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*which his not support in SDL as it's not a texture.*/
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*which his not supported in OpenGL as it's not a texture.*/
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if(lv_refr_get_disp_refreshing() == NULL) return 0;
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if(((lv_draw_dsc_base_t *)task->draw_dsc)->user_data == NULL) {
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@@ -548,6 +553,13 @@ static void execute_drawing(lv_draw_opengles_unit_t * u)
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return;
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}
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#if LV_USE_3DTEXTURE
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if(t->type == LV_DRAW_TASK_TYPE_3D) {
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lv_draw_opengles_3d(t, t->draw_dsc, &t->area);
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return;
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}
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#endif
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draw_from_cached_texture(t);
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}
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@@ -589,4 +601,32 @@ static unsigned int create_texture(int32_t w, int32_t h, const void * data)
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return texture;
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}
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#if LV_USE_3DTEXTURE
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static void lv_draw_opengles_3d(lv_draw_task_t * t, const lv_draw_3d_dsc_t * dsc, const lv_area_t * coords)
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{
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lv_draw_opengles_unit_t * u = (lv_draw_opengles_unit_t *) t->draw_unit;
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lv_layer_t * dest_layer = t->target_layer;
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unsigned int target_texture = layer_get_texture(dest_layer);
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LV_ASSERT(target_texture != 0);
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int32_t targ_tex_w = lv_area_get_width(&dest_layer->buf_area);
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int32_t targ_tex_h = lv_area_get_height(&dest_layer->buf_area);
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GL_CALL(glBindTexture(GL_TEXTURE_2D, target_texture));
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unsigned int framebuffer = get_framebuffer(u);
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GL_CALL(glBindFramebuffer(GL_FRAMEBUFFER, framebuffer));
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GL_CALL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, target_texture, 0));
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lv_opengles_viewport(0, 0, targ_tex_w, targ_tex_h);
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lv_area_t clip_area = t->clip_area;
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lv_area_move(&clip_area, -dest_layer->buf_area.x1, -dest_layer->buf_area.y1);
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lv_opengles_render_texture(dsc->tex_id, coords, dsc->opa, targ_tex_w, targ_tex_h, &clip_area, true);
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GL_CALL(glBindFramebuffer(GL_FRAMEBUFFER, 0));
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GL_CALL(glBindTexture(GL_TEXTURE_2D, 0));
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}
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#endif /*LV_USE_3DTEXTURE*/
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#endif /*LV_USE_DRAW_OPENGLES*/
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@@ -227,6 +227,10 @@ static int32_t evaluate(lv_draw_unit_t * draw_unit, lv_draw_task_t * task)
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}
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}
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break;
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#if LV_USE_3DTEXTURE
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case LV_DRAW_TASK_TYPE_3D:
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return 0;
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#endif
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default:
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break;
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}
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@@ -2483,6 +2483,14 @@
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#endif
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#endif
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#ifndef LV_USE_3DTEXTURE
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#ifdef CONFIG_LV_USE_3DTEXTURE
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#define LV_USE_3DTEXTURE CONFIG_LV_USE_3DTEXTURE
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#else
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#define LV_USE_3DTEXTURE 0
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#endif
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#endif
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/*==================
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* THEMES
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*==================*/
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@@ -41,6 +41,16 @@ extern "C" {
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#endif
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#if LV_USE_3DTEXTURE
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#if LV_USE_OPENGLES
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#define LV_3DTEXTURE_ID_NULL 0u
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#endif
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#ifndef LV_3DTEXTURE_ID_NULL
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#error enable LV_USE_OPENGLES to use LV_USE_3DTEXTURE
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#endif
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#endif /*LV_USE_3DTEXTURE*/
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/**********************
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* TYPEDEFS
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**********************/
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@@ -81,6 +91,12 @@ typedef float lv_value_precise_t;
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typedef int32_t lv_value_precise_t;
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#endif
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#if LV_USE_3DTEXTURE
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#if LV_USE_OPENGLES
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typedef unsigned int lv_3dtexture_id_t;
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#endif
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#endif
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/**
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* Typedefs from various lvgl modules.
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* They are defined here to avoid circular dependencies.
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@@ -257,6 +273,8 @@ typedef struct _lv_tileview_tile_t lv_tileview_tile_t;
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typedef struct _lv_win_t lv_win_t;
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typedef struct _lv_3dtexture_t lv_3dtexture_t;
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typedef struct _lv_observer_t lv_observer_t;
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typedef struct _lv_monkey_config_t lv_monkey_config_t;
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@@ -0,0 +1,144 @@
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/**
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* @file lv_3dtexture.c
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*
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*/
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/*********************
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* INCLUDES
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||||
*********************/
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#include "lv_3dtexture_private.h"
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#if LV_USE_3DTEXTURE
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#include "../../core/lv_obj_class_private.h"
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#include "../../draw/lv_draw_3d.h"
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/*********************
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* DEFINES
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||||
*********************/
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#define MY_CLASS (&lv_3dtexture_class)
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/**********************
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||||
* TYPEDEFS
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||||
**********************/
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||||
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void lv_3dtexture_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
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static void lv_3dtexture_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
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static void lv_3dtexture_event(const lv_obj_class_t * class_p, lv_event_t * e);
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static void draw_3dtexture(lv_event_t * e);
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/**********************
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* STATIC VARIABLES
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||||
**********************/
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||||
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||||
const lv_obj_class_t lv_3dtexture_class = {
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.constructor_cb = lv_3dtexture_constructor,
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.destructor_cb = lv_3dtexture_destructor,
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.event_cb = lv_3dtexture_event,
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||||
.width_def = LV_DPI_DEF,
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.height_def = LV_DPI_DEF,
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.instance_size = sizeof(lv_3dtexture_t),
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||||
.base_class = &lv_obj_class,
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||||
.name = "3dtexture",
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||||
};
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||||
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||||
/**********************
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||||
* MACROS
|
||||
**********************/
|
||||
|
||||
/**********************
|
||||
* GLOBAL FUNCTIONS
|
||||
**********************/
|
||||
|
||||
lv_obj_t * lv_3dtexture_create(lv_obj_t * parent)
|
||||
{
|
||||
LV_LOG_INFO("begin");
|
||||
lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
|
||||
lv_obj_class_init_obj(obj);
|
||||
return obj;
|
||||
}
|
||||
|
||||
void lv_3dtexture_set_src(lv_obj_t * obj, lv_3dtexture_id_t id)
|
||||
{
|
||||
LV_ASSERT_OBJ(obj, MY_CLASS);
|
||||
|
||||
lv_3dtexture_t * tex = (lv_3dtexture_t *)obj;
|
||||
tex->id = id;
|
||||
}
|
||||
|
||||
/*======================
|
||||
* Add/remove functions
|
||||
*=====================*/
|
||||
|
||||
/*=====================
|
||||
* Setter functions
|
||||
*====================*/
|
||||
|
||||
/*=====================
|
||||
* Getter functions
|
||||
*====================*/
|
||||
|
||||
/*=====================
|
||||
* Other functions
|
||||
*====================*/
|
||||
|
||||
/**********************
|
||||
* STATIC FUNCTIONS
|
||||
**********************/
|
||||
|
||||
static void lv_3dtexture_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
|
||||
{
|
||||
LV_UNUSED(class_p);
|
||||
LV_TRACE_OBJ_CREATE("begin");
|
||||
|
||||
lv_3dtexture_t * tex = (lv_3dtexture_t *)obj;
|
||||
tex->id = LV_3DTEXTURE_ID_NULL;
|
||||
|
||||
LV_TRACE_OBJ_CREATE("finished");
|
||||
}
|
||||
|
||||
static void lv_3dtexture_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
|
||||
{
|
||||
LV_UNUSED(class_p);
|
||||
lv_3dtexture_t * tex = (lv_3dtexture_t *)obj;
|
||||
LV_UNUSED(tex);
|
||||
}
|
||||
|
||||
static void lv_3dtexture_event(const lv_obj_class_t * class_p, lv_event_t * e)
|
||||
{
|
||||
LV_UNUSED(class_p);
|
||||
|
||||
lv_result_t res;
|
||||
|
||||
/*Call the ancestor's event handler*/
|
||||
res = lv_obj_event_base(MY_CLASS, e);
|
||||
if(res != LV_RESULT_OK) return;
|
||||
|
||||
lv_event_code_t code = lv_event_get_code(e);
|
||||
|
||||
if(code == LV_EVENT_DRAW_MAIN) {
|
||||
draw_3dtexture(e);
|
||||
}
|
||||
}
|
||||
|
||||
static void draw_3dtexture(lv_event_t * e)
|
||||
{
|
||||
lv_obj_t * obj = lv_event_get_current_target(e);
|
||||
lv_3dtexture_t * tex = (lv_3dtexture_t *)obj;
|
||||
lv_layer_t * layer = lv_event_get_layer(e);
|
||||
|
||||
lv_draw_3d_dsc_t dsc;
|
||||
lv_draw_3d_dsc_init(&dsc);
|
||||
dsc.tex_id = tex->id;
|
||||
dsc.opa = lv_obj_get_style_opa(obj, 0);
|
||||
lv_area_t coords;
|
||||
lv_obj_get_coords(obj, &coords);
|
||||
lv_draw_3d(layer, &dsc, &coords);
|
||||
}
|
||||
|
||||
#endif /*LV_USE_3DTEXTURE*/
|
||||
@@ -0,0 +1,78 @@
|
||||
/**
|
||||
* @file lv_3dtexture.h
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef LV_3DTEXTURE_H
|
||||
#define LV_3DTEXTURE_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/*********************
|
||||
* INCLUDES
|
||||
*********************/
|
||||
|
||||
#include "../../lv_conf_internal.h"
|
||||
#if LV_USE_3DTEXTURE
|
||||
|
||||
#include "../../core/lv_obj.h"
|
||||
|
||||
/*********************
|
||||
* DEFINES
|
||||
*********************/
|
||||
|
||||
/**********************
|
||||
* TYPEDEFS
|
||||
**********************/
|
||||
|
||||
LV_ATTRIBUTE_EXTERN_DATA extern const lv_obj_class_t lv_3dtexture_class;
|
||||
|
||||
/**********************
|
||||
* GLOBAL PROTOTYPES
|
||||
**********************/
|
||||
|
||||
/**
|
||||
* Create a 3dtexture object
|
||||
* @param parent pointer to an object, it will be the parent of the new 3dtexture
|
||||
* @return pointer to the created 3dtexture
|
||||
*/
|
||||
lv_obj_t * lv_3dtexture_create(lv_obj_t * parent);
|
||||
|
||||
/**
|
||||
* Set the source texture of the widget.
|
||||
* The object size should be manually set to match.
|
||||
* @param obj the 3dtexture widget
|
||||
* @param id the texture handle from the 3D graphics backend.
|
||||
* I.e., an `unsigned int` texture for OpenGL.
|
||||
*/
|
||||
void lv_3dtexture_set_src(lv_obj_t * obj, lv_3dtexture_id_t id);
|
||||
|
||||
/*======================
|
||||
* Add/remove functions
|
||||
*=====================*/
|
||||
|
||||
/*=====================
|
||||
* Setter functions
|
||||
*====================*/
|
||||
|
||||
/*=====================
|
||||
* Getter functions
|
||||
*====================*/
|
||||
|
||||
/*=====================
|
||||
* Other functions
|
||||
*====================*/
|
||||
|
||||
/**********************
|
||||
* MACROS
|
||||
**********************/
|
||||
|
||||
#endif /*LV_USE_3DTEXTURE*/
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /*extern "C"*/
|
||||
#endif
|
||||
|
||||
#endif /*LV_3DTEXTURE_H*/
|
||||
@@ -0,0 +1,50 @@
|
||||
/**
|
||||
* @file lv_3dtexture_private.h
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef LV_3DTEXTURE_PRIVATE_H
|
||||
#define LV_3DTEXTURE_PRIVATE_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/*********************
|
||||
* INCLUDES
|
||||
*********************/
|
||||
|
||||
#include "lv_3dtexture.h"
|
||||
#if LV_USE_3DTEXTURE
|
||||
|
||||
#include "../../core/lv_obj_private.h"
|
||||
|
||||
/*********************
|
||||
* DEFINES
|
||||
*********************/
|
||||
|
||||
/**********************
|
||||
* TYPEDEFS
|
||||
**********************/
|
||||
|
||||
/*Data of 3dtexture*/
|
||||
struct _lv_3dtexture_t {
|
||||
lv_obj_t obj;
|
||||
lv_3dtexture_id_t id;
|
||||
};
|
||||
|
||||
/**********************
|
||||
* GLOBAL PROTOTYPES
|
||||
**********************/
|
||||
|
||||
/**********************
|
||||
* MACROS
|
||||
**********************/
|
||||
|
||||
#endif /*LV_USE_3DTEXTURE*/
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /*extern "C"*/
|
||||
#endif
|
||||
|
||||
#endif /*LV_3DTEXTURE_PRIVATE_H*/
|
||||
Reference in New Issue
Block a user