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nuttx-apps/examples/ft80x/ft80x_primitives.c
Alin Jerpelea a0f9b7d33f apps: examples: ft80x: nxstyle fixes 
fixes for errors reported by the nxstyle tool.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2022-03-09 21:07:53 +08:00

786 lines
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/****************************************************************************
* apps/examples/ft80x/ft80x_primitives.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Derives from FTDI sample code which appears to have an unrestricted
* license.
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <errno.h>
#include <nuttx/lcd/ft80x.h>
#include "graphics/ft80x.h"
#include "ft80x.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define STENCIL_NUM_LINES 8
#define STENCIL_NUM_POINTS 6
/****************************************************************************
* Private Functions
****************************************************************************/
static float lerp(float t, float a, float b)
{
return (float)((1 - t) * a + t * b);
}
static float smoothlerp(float t, float a, float b)
{
float lt = 3 * t * t - 2 * t * t * t;
return lerp(lt, a, b);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: ft80x_bitmaps
*
* Description:
* Demonstrate the bitmaps primitive
*
****************************************************************************/
#ifndef CONFIG_EXAMPLES_FT80X_EXCLUDE_BITMAPS
int ft80x_prim_bitmaps(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
FAR const struct ft80x_bitmaphdr_s *bmhdr = &g_lenaface_bmhdr;
uint32_t cmds[18];
int16_t offsetx;
int16_t offsety;
int ret;
/* Copy the image into graphics ram */
ret = ft80x_ramg_write(fd, 0, bmhdr->data, bmhdr->stride * bmhdr->height);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_ramg_write() failed: %d\n", ret);
return ret;
}
/* Set up the display list */
cmds[0] = FT80X_CLEAR(1, 1, 1); /* Clear screen */
cmds[1] = FT80X_COLOR_RGB(255, 255, 255);
cmds[2] = FT80X_BITMAP_SOURCE(FT80X_RAM_G);
cmds[3] = FT80X_BITMAP_LAYOUT(bmhdr->format,
bmhdr->stride,
bmhdr->height);
cmds[4] = FT80X_BITMAP_SIZE(FT80X_FILTER_NEAREST,
FT80X_WRAP_BORDER,
FT80X_WRAP_BORDER,
bmhdr->width,
bmhdr->height);
cmds[5] = FT80X_BEGIN(FT80X_PRIM_BITMAPS); /* Start drawing bitmaps */
offsetx = FT80X_DISPLAY_WIDTH / 4 - bmhdr->width / 2;
offsety = FT80X_DISPLAY_HEIGHT / 2 - bmhdr->height / 2;
cmds[6] = FT80X_VERTEX2II(offsetx, offsety, 0, 0);
cmds[7] = FT80X_COLOR_RGB(255, 64, 64); /* Red at (200, 120) */
offsetx = (FT80X_DISPLAY_WIDTH * 2) / 4 - bmhdr->width / 2;
offsety = FT80X_DISPLAY_HEIGHT / 2 - bmhdr->height / 2;
cmds[8] = FT80X_VERTEX2II(offsetx, offsety, 0, 0);
cmds[9] = FT80X_COLOR_RGB(64, 180, 64); /* Green at (216, 136) */
offsetx += bmhdr->width / 2;
offsety += bmhdr->height / 2;
cmds[10] = FT80X_VERTEX2II(offsetx, offsety, 0, 0);
cmds[11] = FT80X_COLOR_RGB(255, 255, 64); /* Transparent yellow at (232, 152) */
cmds[12] = FT80X_COLOR_A(150);
offsetx += bmhdr->width / 2;
offsety += bmhdr->height / 2;
cmds[13] = FT80X_VERTEX2II(offsetx, offsety, 0, 0);
cmds[14] = FT80X_COLOR_A(255);
cmds[15] = FT80X_COLOR_RGB(255, 255, 255);
cmds[16] = FT80X_VERTEX2F(-10 * 16, -10 * 16); /* For -ve coordinates use vertex2f instruction */
cmds[17] = FT80X_END();
/* Create the hardware display list */
ret = ft80x_dl_create(fd, buffer, cmds, 18, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_create failed: %d\n", ret);
return ret;
}
return OK;
}
#endif
/****************************************************************************
* Name: ft80x_points
*
* Description:
* Demonstrate the points primitive
*
****************************************************************************/
int ft80x_prim_points(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
uint32_t cmds[15];
int ret;
cmds[0] = FT80X_CLEAR_COLOR_RGB(128, 128, 128);
cmds[1] = FT80X_CLEAR(1, 1, 1);
cmds[2] = FT80X_COLOR_RGB(128, 0, 0);
cmds[3] = FT80X_POINT_SIZE(5 * 16);
cmds[4] = FT80X_BEGIN(FT80X_PRIM_POINTS);
cmds[5] = FT80X_VERTEX2F((FT80X_DISPLAY_WIDTH / 5) * 16,
(FT80X_DISPLAY_HEIGHT / 2) * 16);
cmds[6] = FT80X_COLOR_RGB(0, 128, 0);
cmds[7] = FT80X_POINT_SIZE(15 * 16);
cmds[8] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 2) / 5) * 16,
(FT80X_DISPLAY_HEIGHT / 2) * 16);
cmds[9] = FT80X_COLOR_RGB(0, 0, 128);
cmds[10] = FT80X_POINT_SIZE(25 * 16);
cmds[11] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 3) / 5) * 16,
(FT80X_DISPLAY_HEIGHT / 2) * 16);
cmds[12] = FT80X_COLOR_RGB(128, 128, 0);
cmds[13] = FT80X_POINT_SIZE(35 * 16);
cmds[14] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 4) / 5) * 16,
(FT80X_DISPLAY_HEIGHT / 2) * 16);
/* Create the hardware display list */
ret = ft80x_dl_create(fd, buffer, cmds, 15, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_create failed: %d\n", ret);
return ret;
}
return OK;
}
/****************************************************************************
* Name: ft80x_lines
*
* Description:
* Demonstrate the lines primitive
*
****************************************************************************/
int ft80x_prim_lines(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
uint32_t cmds[14];
uint32_t height;
int ret;
height = 25;
cmds[0] = FT80X_CLEAR(1, 1, 1); /* Clear screen */
cmds[1] = FT80X_COLOR_RGB(128, 0, 0);
cmds[2] = FT80X_LINE_WIDTH(5 * 16);
cmds[3] = FT80X_BEGIN(FT80X_PRIM_LINES);
cmds[4] = FT80X_VERTEX2F((FT80X_DISPLAY_WIDTH / 4) * 16,
((FT80X_DISPLAY_HEIGHT - height) / 2) * 16);
cmds[5] = FT80X_VERTEX2F((FT80X_DISPLAY_WIDTH / 4) * 16,
((FT80X_DISPLAY_HEIGHT + height) / 2) * 16);
cmds[6] = FT80X_COLOR_RGB(0, 128, 0);
cmds[7] = FT80X_LINE_WIDTH(10 * 16);
height = 40;
cmds[8] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 2) / 4) * 16,
((FT80X_DISPLAY_HEIGHT - height) / 2) * 16);
cmds[9] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 2) / 4) * 16,
((FT80X_DISPLAY_HEIGHT + height) / 2) * 16);
cmds[10] = FT80X_COLOR_RGB(128, 128, 0);
cmds[11] = FT80X_LINE_WIDTH(20 * 16);
height = 55;
cmds[12] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 3) / 4) * 16,
((FT80X_DISPLAY_HEIGHT - height) / 2) * 16);
cmds[13] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 3) / 4) * 16,
((FT80X_DISPLAY_HEIGHT + height) / 2) * 16);
/* Create the hardware display list */
ret = ft80x_dl_create(fd, buffer, cmds, 14, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_create failed: %d\n", ret);
return ret;
}
return OK;
}
/****************************************************************************
* Name: ft80x_linestrip
*
* Description:
* Demonstrate the line strip primitive
*
****************************************************************************/
int ft80x_prim_linestrip(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
uint32_t cmds[7];
int ret;
/* Format the display list data */
cmds[0] = FT80X_CLEAR_COLOR_RGB(5, 45, 10);
cmds[1] = FT80X_COLOR_RGB(255, 168, 64);
cmds[2] = FT80X_CLEAR(1, 1, 1);
cmds[3] = FT80X_BEGIN(FT80X_PRIM_LINE_STRIP);
cmds[4] = FT80X_VERTEX2F(16 * 16, 16 * 16);
cmds[5] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 2) / 3) * 16,
(FT80X_DISPLAY_HEIGHT * 2 / 3) * 16);
cmds[6] = FT80X_VERTEX2F((FT80X_DISPLAY_WIDTH - 80) * 16,
(FT80X_DISPLAY_HEIGHT - 20) * 16);
/* Create the hardware display list */
ret = ft80x_dl_create(fd, buffer, cmds, 7, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_create failed: %d\n", ret);
return ret;
}
return OK;
}
/****************************************************************************
* Name: ft80x_edgestrip_r
*
* Description:
* Demonstrate the edge strip right primitive
*
****************************************************************************/
int ft80x_prim_edgestrip_r(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
uint32_t cmds[7];
int ret;
/* Format the display list data */
cmds[0] = FT80X_CLEAR_COLOR_RGB(5, 45, 10);
cmds[1] = FT80X_COLOR_RGB(255, 168, 64);
cmds[2] = FT80X_CLEAR(1, 1, 1);
cmds[3] = FT80X_BEGIN(FT80X_PRIM_EDGE_STRIP_R);
cmds[4] = FT80X_VERTEX2F(16 * 16, 16 * 16);
cmds[5] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH * 2) / 3) * 16,
((FT80X_DISPLAY_HEIGHT * 2) / 3) * 16);
cmds[6] = FT80X_VERTEX2F((FT80X_DISPLAY_WIDTH - 80) * 16,
(FT80X_DISPLAY_HEIGHT - 20) * 16);
/* Create the hardware display list */
ret = ft80x_dl_create(fd, buffer, cmds, 7, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_create failed: %d\n", ret);
return ret;
}
return OK;
}
/****************************************************************************
* Name: ft80x_rectangles
*
* Description:
* Demonstrate the rectangle primitive
*
****************************************************************************/
int ft80x_prim_rectangles(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
uint32_t cmds[14];
uint32_t width;
uint32_t height;
int ret;
cmds[0] = FT80X_CLEAR(1, 1, 1); /* Clear screen */
cmds[1] = FT80X_COLOR_RGB(0, 0, 128);
cmds[2] = FT80X_LINE_WIDTH(1 * 16); /* LINE_WIDTH is used for corner curvature */
cmds[3] = FT80X_BEGIN(FT80X_PRIM_RECTS); /* Start rectangle primitive */
width = 5;
height = 25;
cmds[4] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH / 4) - (width / 2)) * 16,
((FT80X_DISPLAY_HEIGHT - height) / 2) * 16);
cmds[5] = FT80X_VERTEX2F(((FT80X_DISPLAY_WIDTH / 4) + (width / 2)) * 16,
((FT80X_DISPLAY_HEIGHT + height) / 2) * 16);
cmds[6] = FT80X_COLOR_RGB(0, 128, 0);
cmds[7] = FT80X_LINE_WIDTH(5 * 16);
width = 10;
height = 40;
cmds[8] = FT80X_VERTEX2F((((FT80X_DISPLAY_WIDTH * 2) / 4) -
(width / 2)) * 16,
((FT80X_DISPLAY_HEIGHT - height) / 2) * 16);
cmds[9] = FT80X_VERTEX2F((((FT80X_DISPLAY_WIDTH * 2) / 4) +
(width / 2)) * 16,
((FT80X_DISPLAY_HEIGHT + height) / 2) * 16);
cmds[10] = FT80X_COLOR_RGB(128, 128, 0);
cmds[11] = FT80X_LINE_WIDTH(10 * 16);
width = 20;
height = 55;
cmds[12] = FT80X_VERTEX2F((((FT80X_DISPLAY_WIDTH * 3) / 4) -
(width / 2)) * 16,
((FT80X_DISPLAY_HEIGHT - height) / 2) * 16);
cmds[13] = FT80X_VERTEX2F((((FT80X_DISPLAY_WIDTH * 3) / 4) +
(width / 2)) * 16,
((FT80X_DISPLAY_HEIGHT + height) / 2) * 16);
/* Create the hardware display list */
ret = ft80x_dl_create(fd, buffer, cmds, 14, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_create failed: %d\n", ret);
return ret;
}
return OK;
}
/****************************************************************************
* Name: ft80x_prim_scissor
*
* Description:
* Demonstrate the scissor primitive
*
****************************************************************************/
int ft80x_prim_scissor(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
uint32_t cmds[5];
int ret;
cmds[0] = FT80X_CLEAR(1, 1, 1); /* Clear to black */
cmds[1] = FT80X_SCISSOR_XY(40, 20); /* Scissor rectangle top left at (40, 20) */
cmds[2] = FT80X_SCISSOR_SIZE(40, 40); /* Scissor rectangle is 40 x 40 pixels */
cmds[3] = FT80X_CLEAR_COLOR_RGB(255, 255, 0); /* Clear to yellow */
cmds[4] = FT80X_CLEAR(1, 1, 1);
/* Create the hardware display list */
ret = ft80x_dl_create(fd, buffer, cmds, 5, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_create failed: %d\n", ret);
return ret;
}
return OK;
}
/****************************************************************************
* Name: ft80x_prim_stencil
*
* Description:
* Demonstrate additive blend
*
****************************************************************************/
int ft80x_prim_stencil(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
int16_t xball = FT80X_DISPLAY_WIDTH / 2;
int16_t yball = 120;
int16_t rball = FT80X_DISPLAY_WIDTH / 8;
int16_t asize;
int16_t aradius;
int16_t gridsize = 20;
int32_t asmooth;
int32_t dispr = FT80X_DISPLAY_WIDTH - 10;
int32_t displ = 10;
int32_t dispa = 10;
int32_t dispb = FT80X_DISPLAY_HEIGHT - 10;
int8_t xflag = 1;
int8_t yflag = 1;
int ret;
int i;
int j;
/* Display output chunks */
union
{
struct
{
struct ft80x_cmd32_s clearrgb;
struct ft80x_cmd32_s clear;
struct ft80x_cmd32_s stencil;
struct ft80x_cmd32_s colorrgb;
struct ft80x_cmd32_s linewidth;
struct ft80x_cmd32_s begin;
} a;
struct
{
struct ft80x_cmd32_s vertex2f1;
struct ft80x_cmd32_s vertex2f2;
} b;
struct
{
struct ft80x_cmd32_s end;
struct ft80x_cmd32_s colormask;
struct ft80x_cmd32_s pointsize;
struct ft80x_cmd32_s begin;
struct ft80x_cmd32_s vertex2f;
struct ft80x_cmd32_s stencilop;
struct ft80x_cmd32_s stencilfunc;
} c;
struct
{
struct ft80x_cmd32_s pointsize;
struct ft80x_cmd32_s vertex2f;
struct ft80x_cmd32_s end;
struct ft80x_cmd32_s begin;
} d;
struct
{
struct ft80x_cmd32_s linewidth;
struct ft80x_cmd32_s vertex2f1;
struct ft80x_cmd32_s vertex2f2;
} e;
struct
{
struct ft80x_cmd32_s end1;
struct ft80x_cmd32_s colormask;
struct ft80x_cmd32_s stencilfunc1;
struct ft80x_cmd32_s stencilop1;
struct ft80x_cmd32_s colorrgb1;
struct ft80x_cmd32_s pointsize;
struct ft80x_cmd32_s begin;
struct ft80x_cmd32_s vertex2f1;
struct ft80x_cmd32_s colorrgb2;
struct ft80x_cmd32_s colora1;
struct ft80x_cmd32_s vertex2f2;
struct ft80x_cmd32_s colora2;
struct ft80x_cmd32_s colorrgb3;
struct ft80x_cmd32_s vertex2f3;
struct ft80x_cmd32_s colorrgb4;
struct ft80x_cmd32_s stencilfunc2;
struct ft80x_cmd32_s stencilop2;
struct ft80x_cmd32_s vertex2f4;
struct ft80x_cmd32_s end2;
} f;
} cmds;
dispr -= (dispr - displ) % gridsize;
dispb -= (dispb - dispa) % gridsize;
ret = ft80x_audio_enable(fd, true);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_audio_enable(FT80X_IOC_AUDIO) failed: %d\n",
ret);
}
for (i = 100; i > 0; i--)
{
if ((xball + rball + 2) >= dispr || (xball - rball - 2) <= displ)
{
xflag ^= 1;
ret = ft80x_audio_playsound(fd, 0, FT08X_EFFECT_CLICK);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_audio_playsound failed: %d\n", ret);
goto errout_with_sound;
}
}
if ((yball + rball + 8) >= dispb || (yball - rball - 8) <= dispa)
{
yflag ^= 1;
ret = ft80x_audio_playsound(fd, 0, FT08X_EFFECT_CLICK);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_audio_playsound failed: %d\n", ret);
goto errout_with_sound;
}
}
if (xflag != 0)
{
xball += 2;
}
else
{
xball -= 2;
}
if (yflag != 0)
{
yball += 8 ;
}
else
{
yball -= 8;
}
/* Create the hardware display list */
ret = ft80x_dl_start(fd, buffer, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_start failed: %d\n", ret);
goto errout_with_sound;
}
cmds.a.clearrgb.cmd = FT80X_CLEAR_COLOR_RGB(128, 128, 0);
cmds.a.clear.cmd = FT80X_CLEAR(1, 1, 1);
cmds.a.stencil.cmd = FT80X_STENCIL_OP(STENCIL_OP_INCR,
STENCIL_OP_INCR);
cmds.a.colorrgb.cmd = FT80X_COLOR_RGB(0, 0, 0);
/* Draw grid */
cmds.a.linewidth.cmd = FT80X_LINE_WIDTH(16);
cmds.a.begin.cmd = FT80X_BEGIN(FT80X_PRIM_LINES);
ret = ft80x_dl_data(fd, buffer, &cmds.a, sizeof(cmds.a));
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_data failed: %d\n", ret);
goto errout_with_sound;
}
for (j = 0; j <= ((dispr - displ) / gridsize); j++)
{
cmds.b.vertex2f1.cmd =
FT80X_VERTEX2F((displ + j * gridsize) * 16, dispa * 16);
cmds.b.vertex2f2.cmd =
FT80X_VERTEX2F((displ + j * gridsize) * 16, dispb * 16);
ret = ft80x_dl_data(fd, buffer, &cmds.b, sizeof(cmds.b));
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_data failed: %d\n", ret);
goto errout_with_sound;
}
}
for (j = 0; j <= ((dispb - dispa) / gridsize); j++)
{
cmds.b.vertex2f1.cmd =
FT80X_VERTEX2F(displ * 16, (dispa + j * gridsize) * 16);
cmds.b.vertex2f2.cmd =
FT80X_VERTEX2F(dispr * 16, (dispa + j * gridsize) * 16);
ret = ft80x_dl_data(fd, buffer, &cmds.b, sizeof(cmds.b));
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_data failed: %d\n", ret);
goto errout_with_sound;
}
}
cmds.c.end.cmd = FT80X_END();
cmds.c.colormask.cmd = FT80X_COLOR_MASK(0, 0, 0, 0);
cmds.c.pointsize.cmd = FT80X_POINT_SIZE(rball * 16);
cmds.c.begin.cmd = FT80X_BEGIN(FT80X_PRIM_POINTS);
cmds.c.vertex2f.cmd = FT80X_VERTEX2F(xball * 16,
yball * 16);
cmds.c.stencilop.cmd = FT80X_STENCIL_OP(STENCIL_OP_INCR,
STENCIL_OP_ZERO);
cmds.c.stencilfunc.cmd = FT80X_STENCIL_FUNC(STENCIL_FUNC_GEQUAL, 1,
255);
ret = ft80x_dl_data(fd, buffer, &cmds.c, sizeof(cmds.c));
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_data failed: %d\n", ret);
goto errout_with_sound;
}
/* One side points */
for (j = 1; j <= STENCIL_NUM_LINES; j++)
{
asize = j * rball * 2 / (STENCIL_NUM_LINES + 1);
asmooth = (int32_t)
smoothlerp((float)((float)asize /
(2 * (float)rball)), 0, 2 * (float)rball);
if (asmooth > rball)
{
/* Change the offset to -ve */
int32_t tmp = asmooth - rball;
aradius = (rball * rball + tmp * tmp) / (2 * tmp);
cmds.d.pointsize.cmd = FT80X_POINT_SIZE(aradius * 16);
cmds.d.vertex2f.cmd = FT80X_VERTEX2F((xball - aradius + tmp) *
16, yball * 16);
}
else
{
int32_t tmp = rball - asmooth;
aradius = (rball * rball + tmp * tmp) / (2 * tmp);
cmds.d.pointsize.cmd = FT80X_POINT_SIZE(aradius * 16);
cmds.d.vertex2f.cmd = FT80X_VERTEX2F((xball + aradius - tmp) *
16, yball * 16);
}
}
cmds.d.end.cmd = FT80X_END();
cmds.d.begin.cmd = FT80X_BEGIN(FT80X_PRIM_LINES);
ret = ft80x_dl_data(fd, buffer, &cmds.d, sizeof(cmds.d));
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_data failed: %d\n", ret);
goto errout_with_sound;
}
/* Draw lines - line should be at least radius diameter */
for (j = 1; j <= STENCIL_NUM_LINES; j++)
{
asize = (j * rball * 2 / STENCIL_NUM_LINES);
asmooth = (int32_t)
smoothlerp((float)((float)asize /
(2 * (float)rball)), 0, 2 * (float)rball);
cmds.e.linewidth.cmd = FT80X_LINE_WIDTH(asmooth * 16);
cmds.e.vertex2f1.cmd = FT80X_VERTEX2F((xball - rball) * 16,
(yball - rball) * 16);
cmds.e.vertex2f2.cmd = FT80X_VERTEX2F((xball + rball) * 16,
(yball - rball) * 16);
ret = ft80x_dl_data(fd, buffer, &cmds.e, sizeof(cmds.e));
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_data failed: %d\n", ret);
goto errout_with_sound;
}
}
cmds.f.end1.cmd = FT80X_END();
cmds.f.colormask.cmd = FT80X_COLOR_MASK(1, 1, 1, 1);
cmds.f.stencilfunc1.cmd = FT80X_STENCIL_FUNC(STENCIL_FUNC_ALWAYS,
1, 255);
cmds.f.stencilop1.cmd = FT80X_STENCIL_OP(STENCIL_OP_KEEP,
STENCIL_OP_KEEP);
cmds.f.colorrgb1.cmd = FT80X_COLOR_RGB(255, 255, 255);
cmds.f.pointsize.cmd = FT80X_POINT_SIZE(rball * 16);
cmds.f.begin.cmd = FT80X_BEGIN(FT80X_PRIM_POINTS);
cmds.f.vertex2f1.cmd = FT80X_VERTEX2F((xball - 1) * 16,
(yball - 1) * 16);
cmds.f.colorrgb2.cmd = FT80X_COLOR_RGB(0, 0, 0);
cmds.f.colora1.cmd = FT80X_COLOR_A(160);
cmds.f.vertex2f2.cmd = FT80X_VERTEX2F((xball + 16) * 16,
(yball + 8) * 16);
cmds.f.colora2.cmd = FT80X_COLOR_A(255);
cmds.f.colorrgb3.cmd = FT80X_COLOR_RGB(255, 255, 255);
cmds.f.vertex2f3.cmd = FT80X_VERTEX2F(xball * 16, yball * 16);
cmds.f.colorrgb4.cmd = FT80X_COLOR_RGB(255, 0, 0);
cmds.f.stencilfunc2.cmd = FT80X_STENCIL_FUNC(STENCIL_FUNC_GEQUAL,
1, 1);
cmds.f.stencilop2.cmd = FT80X_STENCIL_OP(STENCIL_OP_KEEP,
STENCIL_OP_KEEP);
cmds.f.vertex2f4.cmd = FT80X_VERTEX2F(xball * 16, yball * 16);
cmds.f.end2.cmd = FT80X_END();
ret = ft80x_dl_data(fd, buffer, &cmds.f, sizeof(cmds.f));
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_data failed: %d\n", ret);
goto errout_with_sound;
}
/* Finally, terminate the display list */
ret = ft80x_dl_end(fd, buffer);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_end failed: %d\n", ret);
}
}
errout_with_sound:
ft80x_audio_enable(fd, false);
return ret;
}
/****************************************************************************
* Name: ft80x_prim_alphablend
*
* Description:
* Demonstrate additive blend
*
****************************************************************************/
int ft80x_prim_alphablend(int fd, FAR struct ft80x_dlbuffer_s *buffer)
{
uint32_t cmds[8];
int ret;
cmds[0] = FT80X_CLEAR(1, 1, 1); /* Clear screen */
cmds[1] = FT80X_BEGIN(FT80X_PRIM_BITMAPS);
cmds[2] = FT80X_VERTEX2II(50, 30, 31, 0x47);
cmds[3] = FT80X_COLOR_A(128);
cmds[4] = FT80X_VERTEX2II(58, 38, 31, 0x47);
cmds[5] = FT80X_COLOR_A(64);
cmds[6] = FT80X_VERTEX2II(66, 46, 31, 0x47);
cmds[7] = FT80X_END();
/* Create the hardware display list */
ret = ft80x_dl_create(fd, buffer, cmds, 8, false);
if (ret < 0)
{
ft80x_err("ERROR: ft80x_dl_create failed: %d\n", ret);
return ret;
}
return OK;
}
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