1.1 --- a/src/pc/camera.c	Thu Jun 18 03:12:30 2015 +0300
     1.2 +++ b/src/pc/camera.c	Thu Jun 18 03:55:05 2015 +0300
     1.3 @@ -1,42 +1,117 @@
     1.4 +#include <math.h>
     1.5 +#include "opengl.h"
     1.6  #include "camera.h"
     1.7  
     1.8 +static unsigned int tex;
     1.9 +static float tex_matrix[] = {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1};
    1.10 +
    1.11 +#define TESTPAT_WIDTH	256
    1.12 +#define TESTPAT_HEIGHT	256
    1.13 +
    1.14  int cam_init(void *platform_data)
    1.15  {
    1.16 +	unsigned char pal[2][2][3] = {
    1.17 +		{{255, 128, 64}, {64, 128, 255}},
    1.18 +		{{128, 255, 64}, {128, 64, 255}}
    1.19 +	};
    1.20 +
    1.21 +	int i, j;
    1.22 +	unsigned char pixels[TESTPAT_WIDTH * TESTPAT_HEIGHT * 3];
    1.23 +	unsigned char *pptr = pixels;
    1.24 +
    1.25 +	for(i=0; i<TESTPAT_HEIGHT; i++) {
    1.26 +		for(j=0; j<TESTPAT_WIDTH; j++) {
    1.27 +			int chess = ((i >> 3) & 1) == ((j >> 3) & 1);
    1.28 +			float x = 2.0 * (float)j / (float)TESTPAT_WIDTH - 1.0;
    1.29 +			float y = 2.0 * (float)i / (float)TESTPAT_HEIGHT - 1.0;
    1.30 +			float len = sqrt(x * x + y * y);
    1.31 +			float wave = cos(len * 4.0 * M_PI);
    1.32 +			int band = wave >= 0 ? 0 : 1;
    1.33 +
    1.34 +			*pptr++ = pal[band][chess][0];
    1.35 +			*pptr++ = pal[band][chess][1];
    1.36 +			*pptr++ = pal[band][chess][2];
    1.37 +		}
    1.38 +	}
    1.39 +
    1.40 +	glGenTextures(1, &tex);
    1.41 +	glBindTexture(GL_TEXTURE_2D, tex);
    1.42 +	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    1.43 +	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    1.44 +	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, TESTPAT_WIDTH, TESTPAT_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, pixels);
    1.45 +
    1.46 +	return 0;
    1.47 +}
    1.48 +
    1.49 +void cam_shutdown(void)
    1.50 +{
    1.51 +	glDeleteTextures(1, &tex);
    1.52 +}
    1.53 +
    1.54 +unsigned int cam_texture(void)
    1.55 +{
    1.56 +	return tex;
    1.57 +}
    1.58 +
    1.59 +const float *cam_texture_matrix(void)
    1.60 +{
    1.61 +	return tex_matrix;
    1.62 +}
    1.63 +
    1.64 +int cam_start_video(void)
    1.65 +{
    1.66 +	return 0;
    1.67 +}
    1.68 +
    1.69 +int cam_stop_video(void)
    1.70 +{
    1.71 +	return 0;
    1.72 +}
    1.73 +
    1.74 +int cam_update(void)
    1.75 +{
    1.76 +	return 0;
    1.77 +}
    1.78 +
    1.79 +int cam_is_capturing(void)
    1.80 +{
    1.81 +	return 1;
    1.82 +}
    1.83 +
    1.84 +int cam_video_size(int *xsz, int *ysz)
    1.85 +{
    1.86 +	*xsz = TESTPAT_WIDTH;
    1.87 +	*ysz = TESTPAT_HEIGHT;
    1.88 +	return 0;
    1.89 +}
    1.90 +
    1.91 +int cam_take_picture(void)
    1.92 +{
    1.93  	return -1;
    1.94  }
    1.95  
    1.96 -void cam_shutdown(void)
    1.97 +void cam_draw_preview(void)
    1.98  {
    1.99 +	glPushAttrib(GL_ENABLE_BIT);
   1.100 +	glDisable(GL_DEPTH_TEST);
   1.101 +	glDisable(GL_LIGHTING);
   1.102 +	glEnable(GL_TEXTURE_2D);
   1.103 +	glDisable(GL_BLEND);
   1.104 +
   1.105 +	glUseProgram(0);
   1.106 +
   1.107 +	glBindTexture(GL_TEXTURE_2D, tex);
   1.108 +
   1.109 +	glBegin(GL_QUADS);
   1.110 +	glTexCoord2f(0, 0);
   1.111 +	glVertex2f(-1, -1);
   1.112 +	glTexCoord2f(1, 0);
   1.113 +	glVertex2f(1, -1);
   1.114 +	glTexCoord2f(1, 1);
   1.115 +	glVertex2f(1, 1);
   1.116 +	glTexCoord2f(0, 1);
   1.117 +	glVertex2f(-1, 1);
   1.118 +	glEnd();
   1.119 +
   1.120 +	glPopAttrib();
   1.121  }
   1.122 -
   1.123 -unsigned int cam_texture(void)
   1.124 -{
   1.125 -}
   1.126 -
   1.127 -const float *cam_texture_matrix(void)
   1.128 -{
   1.129 -}
   1.130 -
   1.131 -int cam_start_video(void)
   1.132 -{
   1.133 -}
   1.134 -
   1.135 -int cam_stop_video(void)
   1.136 -{
   1.137 -}
   1.138 -
   1.139 -int cam_update(void)
   1.140 -{
   1.141 -}
   1.142 -
   1.143 -int cam_is_capturing(void)
   1.144 -{
   1.145 -}
   1.146 -
   1.147 -int cam_video_size(int *xsz, int *ysz)
   1.148 -{
   1.149 -}
   1.150 -
   1.151 -int cam_take_picture(void)
   1.152 -{
   1.153 -}