int ChromaKeyHSV::handle_opengl()
{
#ifdef HAVE_GL
// For macro
ChromaKeyHSV *plugin = this;
OUTER_VARIABLES
static const char *yuv_shader =
"const vec3 black = vec3(0.0, 0.5, 0.5);\n"
"\n"
"vec4 yuv_to_rgb(vec4 color)\n"
"{\n"
YUV_TO_RGB_FRAG("color")
" return color;\n"
"}\n"
"\n"
"vec4 rgb_to_yuv(vec4 color)\n"
"{\n"
RGB_TO_YUV_FRAG("color")
" return color;\n"
"}\n";
static const char *rgb_shader =
"const vec3 black = vec3(0.0, 0.0, 0.0);\n"
"\n"
"vec4 yuv_to_rgb(vec4 color)\n"
"{\n"
" return color;\n"
"}\n"
"vec4 rgb_to_yuv(vec4 color)\n"
"{\n"
" return color;\n"
"}\n";
static const char *hsv_shader =
"vec4 rgb_to_hsv(vec4 color)\n"
"{\n"
RGB_TO_HSV_FRAG("color")
" return color;\n"
"}\n"
"\n"
"vec4 hsv_to_rgb(vec4 color)\n"
"{\n"
HSV_TO_RGB_FRAG("color")
" return color;\n"
"}\n"
"\n";
static const char *show_rgbmask_shader =
"vec4 show_mask(vec4 color, vec4 color2)\n"
"{\n"
" return vec4(1.0, 1.0, 1.0, min(color.a, color2.a));"
"}\n";
static const char *show_yuvmask_shader =
"vec4 show_mask(vec4 color, vec4 color2)\n"
"{\n"
" return vec4(1.0, 0.5, 0.5, min(color.a, color2.a));"
"}\n";
static const char *nomask_shader =
"vec4 show_mask(vec4 color, vec4 color2)\n"
"{\n"
" return vec4(color.rgb, min(color.a, color2.a));"
"}\n";
extern unsigned char _binary_chromakey_sl_start[];
static const char *shader = (char*)_binary_chromakey_sl_start;
get_output()->to_texture();
get_output()->enable_opengl();
get_output()->init_screen();
const char* shader_stack[] = { 0, 0, 0, 0, 0 };
switch(get_output()->get_color_model())
{
case BC_YUV888:
case BC_YUVA8888:
shader_stack[0] = yuv_shader;
shader_stack[1] = hsv_shader;
if(config.show_mask)
shader_stack[2] = show_yuvmask_shader;
else
shader_stack[2] = nomask_shader;
shader_stack[3] = shader;
break;
default:
shader_stack[0] = rgb_shader;
shader_stack[1] = hsv_shader;
if(config.show_mask)
shader_stack[2] = show_rgbmask_shader;
else
shader_stack[2] = nomask_shader;
shader_stack[3] = shader;
break;
}
unsigned int frag = VFrame::make_shader(0,
shader_stack[0],
shader_stack[1],
shader_stack[2],
shader_stack[3],
0);
if(frag)
{
glUseProgram(frag);
glUniform1i(glGetUniformLocation(frag, "tex"), 0);
glUniform1f(glGetUniformLocation(frag, "red"), red);
glUniform1f(glGetUniformLocation(frag, "green"), green);
glUniform1f(glGetUniformLocation(frag, "blue"), blue);
glUniform1f(glGetUniformLocation(frag, "in_slope"), in_slope);
glUniform1f(glGetUniformLocation(frag, "out_slope"), out_slope);
glUniform1f(glGetUniformLocation(frag, "tolerance"), tolerance);
glUniform1f(glGetUniformLocation(frag, "tolerance_in"), tolerance_in);
glUniform1f(glGetUniformLocation(frag, "tolerance_out"), tolerance_out);
glUniform1f(glGetUniformLocation(frag, "sat"), sat);
glUniform1f(glGetUniformLocation(frag, "min_s"), min_s);
glUniform1f(glGetUniformLocation(frag, "min_s_in"), min_s_in);
glUniform1f(glGetUniformLocation(frag, "min_s_out"), min_s_out);
glUniform1f(glGetUniformLocation(frag, "min_v"), min_v);
glUniform1f(glGetUniformLocation(frag, "min_v_in"), min_v_in);
glUniform1f(glGetUniformLocation(frag, "min_v_out"), min_v_out);
glUniform1f(glGetUniformLocation(frag, "max_v"), max_v);
glUniform1f(glGetUniformLocation(frag, "max_v_in"), max_v_in);
glUniform1f(glGetUniformLocation(frag, "max_v_out"), max_v_out);
glUniform1f(glGetUniformLocation(frag, "spill_threshold"), spill_threshold);
glUniform1f(glGetUniformLocation(frag, "spill_amount"), spill_amount);
glUniform1f(glGetUniformLocation(frag, "alpha_offset"), alpha_offset);
glUniform1f(glGetUniformLocation(frag, "hue_key"), hue_key);
glUniform1f(glGetUniformLocation(frag, "saturation_key"), saturation_key);
glUniform1f(glGetUniformLocation(frag, "value_key"), value_key);
}
get_output()->bind_texture(0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
if(BC_CModels::components(get_output()->get_color_model()) == 3)
{
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
get_output()->clear_pbuffer();
}
get_output()->draw_texture();
glUseProgram(0);
get_output()->set_opengl_state(VFrame::SCREEN);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glDisable(GL_BLEND);
#endif
return 0;
}
int HueEffect::handle_opengl()
{
#ifdef HAVE_GL
const char *yuv_saturation_frag =
"uniform sampler2D tex;\n"
"uniform float s_offset;\n"
"uniform float v_offset;\n"
"void main()\n"
"{\n"
" vec4 pixel = texture2D(tex, gl_TexCoord[0].st);\n"
" pixel.r *= v_offset;\n"
" pixel.gb -= vec2(0.5, 0.5);\n"
" pixel.g *= s_offset;\n"
" pixel.b *= s_offset;\n"
" pixel.gb += vec2(0.5, 0.5);\n"
" gl_FragColor = pixel;\n"
"}\n";
const char *yuv_frag =
"uniform sampler2D tex;\n"
"uniform float h_offset;\n"
"uniform float s_offset;\n"
"uniform float v_offset;\n"
"void main()\n"
"{\n"
" vec4 pixel = texture2D(tex, gl_TexCoord[0].st);\n"
YUV_TO_RGB_FRAG("pixel")
RGB_TO_HSV_FRAG("pixel")
" pixel.r += h_offset;\n"
" pixel.g *= s_offset;\n"
" pixel.b *= v_offset;\n"
" if(pixel.r >= 360.0) pixel.r -= 360.0;\n"
" if(pixel.r < 0.0) pixel.r += 360.0;\n"
HSV_TO_RGB_FRAG("pixel")
RGB_TO_YUV_FRAG("pixel")
" gl_FragColor = pixel;\n"
"}\n";
const char *rgb_frag =
"uniform sampler2D tex;\n"
"uniform float h_offset;\n"
"uniform float s_offset;\n"
"uniform float v_offset;\n"
"void main()\n"
"{\n"
" vec4 pixel = texture2D(tex, gl_TexCoord[0].st);\n"
RGB_TO_HSV_FRAG("pixel")
" pixel.r += h_offset;\n"
" pixel.g *= s_offset;\n"
" pixel.b *= v_offset;\n"
" if(pixel.r >= 360.0) pixel.r -= 360.0;\n"
" if(pixel.r < 0.0) pixel.r += 360.0;\n"
HSV_TO_RGB_FRAG("pixel")
" gl_FragColor = pixel;\n"
"}\n";
get_output()->to_texture();
get_output()->enable_opengl();
unsigned int frag_shader = 0;
switch(get_output()->get_color_model())
{
case BC_YUV888:
case BC_YUVA8888:
// This is a lousy approximation but good enough for the masker.
if(EQUIV(config.hue, 0))
frag_shader = VFrame::make_shader(0,
yuv_saturation_frag,
0);
else
frag_shader = VFrame::make_shader(0,
yuv_frag,
0);
break;
default:
frag_shader = VFrame::make_shader(0,
rgb_frag,
0);
break;
}
if(frag_shader > 0)
{
glUseProgram(frag_shader);
glUniform1i(glGetUniformLocation(frag_shader, "tex"), 0);
glUniform1f(glGetUniformLocation(frag_shader, "h_offset"), config.hue);
glUniform1f(glGetUniformLocation(frag_shader, "s_offset"),
((float)config.saturation - MINSATURATION) / MAXSATURATION);
glUniform1f(glGetUniformLocation(frag_shader, "v_offset"),
((float)config.value - MINVALUE) / MAXVALUE);
}
get_output()->init_screen();
get_output()->bind_texture(0);
get_output()->draw_texture();
glUseProgram(0);
get_output()->set_opengl_state(VFrame::SCREEN);
#endif
return 0;
}
