mirror of https://github.com/yshui/picom.git
Feature #69: GLX: Blur background
- GLX backend: Add blur background support using a GLSL shader. Only tested with nvidia-drivers-313.26. Known to cause quite some decrease in performance (~10%?). - Detach shaders in glx_create_program(). Misc changes.
This commit is contained in:
Richard Grenville
parent
725bc40a65
commit
8208ec6dc8
6
Makefile
6
Makefile
|
|
@ -49,9 +49,9 @@ ifeq "$(NO_VSYNC_OPENGL)" ""
|
|||
# -lGL must precede some other libraries, or it segfaults on FreeBSD (#74)
|
||||
LIBS := -lGL $(LIBS)
|
||||
OBJS += opengl.o
|
||||
# ifeq "$(NO_VSYNC_OPENGL_GLSL)" ""
|
||||
# CFG += -DCONFIG_VSYNC_OPENGL_GLSL
|
||||
# endif
|
||||
ifeq "$(NO_VSYNC_OPENGL_GLSL)" ""
|
||||
CFG += -DCONFIG_VSYNC_OPENGL_GLSL
|
||||
endif
|
||||
endif
|
||||
|
||||
# ==== D-Bus ====
|
||||
|
|
|
|||
24
src/common.h
24
src/common.h
|
|
@ -626,6 +626,18 @@ typedef struct {
|
|||
f_ReleaseTexImageEXT glXReleaseTexImageProc;
|
||||
/// FBConfig-s for GLX pixmap of different depths.
|
||||
glx_fbconfig_t *glx_fbconfigs[OPENGL_MAX_DEPTH + 1];
|
||||
#ifdef CONFIG_VSYNC_OPENGL_GLSL
|
||||
/// Fragment shader for blur.
|
||||
GLuint glx_frag_shader_blur;
|
||||
/// GLSL program for blur.
|
||||
GLuint glx_prog_blur;
|
||||
/// Location of uniform "offset_x" in blur GLSL program.
|
||||
GLint glx_prog_blur_unifm_offset_x;
|
||||
/// Location of uniform "offset_y" in blur GLSL program.
|
||||
GLint glx_prog_blur_unifm_offset_y;
|
||||
/// Location of uniform "factor_center" in blur GLSL program.
|
||||
GLint glx_prog_blur_unifm_factor_center;
|
||||
#endif
|
||||
#endif
|
||||
|
||||
// === X extension related ===
|
||||
|
|
@ -1600,10 +1612,22 @@ glx_tex_binded(const glx_texture_t *ptex, Pixmap pixmap) {
|
|||
void
|
||||
glx_set_clip(session_t *ps, XserverRegion reg);
|
||||
|
||||
bool
|
||||
glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z,
|
||||
GLfloat factor_center);
|
||||
|
||||
bool
|
||||
glx_render(session_t *ps, const glx_texture_t *ptex,
|
||||
int x, int y, int dx, int dy, int width, int height, int z,
|
||||
double opacity, bool neg, XserverRegion reg_tgt);
|
||||
|
||||
#ifdef CONFIG_VSYNC_OPENGL_GLSL
|
||||
GLuint
|
||||
glx_create_shader(GLenum shader_type, const char *shader_str);
|
||||
|
||||
GLuint
|
||||
glx_create_program(const GLuint * const shaders, int nshaders);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
static inline void
|
||||
|
|
|
|||
100
src/compton.c
100
src/compton.c
|
|
@ -1329,60 +1329,76 @@ win_build_picture(session_t *ps, win *w, XRenderPictFormat *pictfmt) {
|
|||
static inline void
|
||||
win_blur_background(session_t *ps, win *w, Picture tgt_buffer,
|
||||
XserverRegion reg_paint) {
|
||||
const static int convolution_blur_size = 3;
|
||||
// Convolution filter parameter (box blur)
|
||||
// gaussian or binomial filters are definitely superior, yet looks
|
||||
// like they aren't supported as of xorg-server-1.13.0
|
||||
XFixed convolution_blur[] = {
|
||||
// Must convert to XFixed with XDoubleToFixed()
|
||||
// Matrix size
|
||||
XDoubleToFixed(convolution_blur_size),
|
||||
XDoubleToFixed(convolution_blur_size),
|
||||
// Matrix
|
||||
XDoubleToFixed(1), XDoubleToFixed(1), XDoubleToFixed(1),
|
||||
XDoubleToFixed(1), XDoubleToFixed(1), XDoubleToFixed(1),
|
||||
XDoubleToFixed(1), XDoubleToFixed(1), XDoubleToFixed(1),
|
||||
};
|
||||
|
||||
const int x = w->a.x;
|
||||
const int y = w->a.y;
|
||||
const int wid = w->widthb;
|
||||
const int hei = w->heightb;
|
||||
|
||||
// Directly copying from tgt_buffer does not work, so we create a
|
||||
// Picture in the middle.
|
||||
Picture tmp_picture = win_build_picture(ps, w, NULL);
|
||||
|
||||
if (!tmp_picture)
|
||||
return;
|
||||
|
||||
double factor_center = 1.0;
|
||||
// Adjust blur strength according to window opacity, to make it appear
|
||||
// better during fading
|
||||
if (!ps->o.blur_background_fixed) {
|
||||
double pct = 1.0 - get_opacity_percent(w) * (1.0 - 1.0 / 9.0);
|
||||
convolution_blur[2 + convolution_blur_size + ((convolution_blur_size - 1) / 2)] = XDoubleToFixed(pct * 8.0 / (1.1 - pct));
|
||||
factor_center = pct * 8.0 / (1.1 - pct);
|
||||
}
|
||||
|
||||
// Minimize the region we try to blur, if the window itself is not
|
||||
// opaque, only the frame is.
|
||||
if (WMODE_SOLID == w->mode && w->frame_opacity) {
|
||||
XserverRegion reg_all = border_size(ps, w, false);
|
||||
XserverRegion reg_noframe = win_get_region_noframe(ps, w, false);
|
||||
XFixesSubtractRegion(ps->dpy, reg_noframe, reg_all, reg_noframe);
|
||||
XFixesSetPictureClipRegion(ps->dpy, tmp_picture, reg_noframe, 0, 0);
|
||||
free_region(ps, ®_all);
|
||||
free_region(ps, ®_noframe);
|
||||
switch (ps->o.backend) {
|
||||
case BKEND_XRENDER:
|
||||
{
|
||||
const static int convolution_blur_size = 3;
|
||||
// Convolution filter parameter (box blur)
|
||||
// gaussian or binomial filters are definitely superior, yet looks
|
||||
// like they aren't supported as of xorg-server-1.13.0
|
||||
XFixed convolution_blur[] = {
|
||||
// Must convert to XFixed with XDoubleToFixed()
|
||||
// Matrix size
|
||||
XDoubleToFixed(convolution_blur_size),
|
||||
XDoubleToFixed(convolution_blur_size),
|
||||
// Matrix
|
||||
XDoubleToFixed(1), XDoubleToFixed(1), XDoubleToFixed(1),
|
||||
XDoubleToFixed(1), XDoubleToFixed(1), XDoubleToFixed(1),
|
||||
XDoubleToFixed(1), XDoubleToFixed(1), XDoubleToFixed(1),
|
||||
};
|
||||
|
||||
// Directly copying from tgt_buffer does not work, so we create a
|
||||
// Picture in the middle.
|
||||
Picture tmp_picture = win_build_picture(ps, w, NULL);
|
||||
|
||||
if (!tmp_picture)
|
||||
return;
|
||||
|
||||
convolution_blur[2 + convolution_blur_size + ((convolution_blur_size - 1) / 2)] = XDoubleToFixed(factor_center);
|
||||
|
||||
// Minimize the region we try to blur, if the window itself is not
|
||||
// opaque, only the frame is.
|
||||
if (WMODE_SOLID == w->mode && w->frame_opacity) {
|
||||
XserverRegion reg_all = border_size(ps, w, false);
|
||||
XserverRegion reg_noframe = win_get_region_noframe(ps, w, false);
|
||||
XFixesSubtractRegion(ps->dpy, reg_noframe, reg_all, reg_noframe);
|
||||
XFixesSetPictureClipRegion(ps->dpy, tmp_picture, reg_noframe, 0, 0);
|
||||
free_region(ps, ®_all);
|
||||
free_region(ps, ®_noframe);
|
||||
}
|
||||
|
||||
// Copy the content to tmp_picture, then copy back. The filter must
|
||||
// be applied on tgt_buffer, to get the nearby pixels outside the
|
||||
// window.
|
||||
XRenderSetPictureFilter(ps->dpy, tgt_buffer, XRFILTER_CONVOLUTION, (XFixed *) convolution_blur, sizeof(convolution_blur) / sizeof(XFixed));
|
||||
XRenderComposite(ps->dpy, PictOpSrc, tgt_buffer, None, tmp_picture, x, y, 0, 0, 0, 0, wid, hei);
|
||||
xrfilter_reset(ps, tgt_buffer);
|
||||
XRenderComposite(ps->dpy, PictOpSrc, tmp_picture, None, tgt_buffer, 0, 0, 0, 0, x, y, wid, hei);
|
||||
|
||||
free_picture(ps, &tmp_picture);
|
||||
}
|
||||
break;
|
||||
#ifdef CONFIG_VSYNC_OPENGL
|
||||
case BKEND_GLX:
|
||||
glx_blur_dst(ps, x, y, wid, hei, ps->glx_z - 0.5, factor_center);
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
assert(0);
|
||||
}
|
||||
|
||||
// Copy the content to tmp_picture, then copy back. The filter must
|
||||
// be applied on tgt_buffer, to get the nearby pixels outside the
|
||||
// window.
|
||||
XRenderSetPictureFilter(ps->dpy, tgt_buffer, XRFILTER_CONVOLUTION, (XFixed *) convolution_blur, sizeof(convolution_blur) / sizeof(XFixed));
|
||||
XRenderComposite(ps->dpy, PictOpSrc, tgt_buffer, None, tmp_picture, x, y, 0, 0, 0, 0, wid, hei);
|
||||
xrfilter_reset(ps, tgt_buffer);
|
||||
XRenderComposite(ps->dpy, PictOpSrc, tmp_picture, None, tgt_buffer, 0, 0, 0, 0, x, y, wid, hei);
|
||||
|
||||
free_picture(ps, &tmp_picture);
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
|
|||
113
src/opengl.c
113
src/opengl.c
|
|
@ -140,6 +140,14 @@ glx_init_end:
|
|||
*/
|
||||
void
|
||||
glx_destroy(session_t *ps) {
|
||||
#ifdef CONFIG_VSYNC_OPENGL_GLSL
|
||||
// Free GLSL shaders/programs
|
||||
if (ps->glx_frag_shader_blur)
|
||||
glDeleteShader(ps->glx_frag_shader_blur);
|
||||
if (ps->glx_prog_blur)
|
||||
glDeleteProgram(ps->glx_prog_blur);
|
||||
#endif
|
||||
|
||||
// Free FBConfigs
|
||||
for (int i = 0; i <= OPENGL_MAX_DEPTH; ++i) {
|
||||
free(ps->glx_fbconfigs[i]);
|
||||
|
|
@ -173,20 +181,66 @@ glx_on_root_change(session_t *ps) {
|
|||
*/
|
||||
bool
|
||||
glx_init_blur(session_t *ps) {
|
||||
printf_errf("(): Blur on GLX backend isn't implemented yet, sorry.");
|
||||
return false;
|
||||
#ifdef CONFIG_VSYNC_OPENGL_GLSL
|
||||
if (ps->o.glx_no_stencil) {
|
||||
printf_errf("(): I'm afraid blur background won't work so well without "
|
||||
"stencil buffer support.");
|
||||
return false;
|
||||
}
|
||||
|
||||
// #ifdef CONFIG_VSYNC_OPENGL_GLSL
|
||||
// static const char *FRAG_SHADER_BLUR = "";
|
||||
// GLuint frag_shader = glx_create_shader(GL_FRAGMENT_SHADER, FRAG_SHADER_BLUR);
|
||||
// if (!frag_shader) {
|
||||
// printf_errf("(): Failed to create fragment shader for blurring.");
|
||||
// return false;
|
||||
// }
|
||||
// #else
|
||||
// printf_errf("(): GLSL support not compiled in. Cannot do blur with GLX backend.");
|
||||
// return false;
|
||||
// #endif
|
||||
// Build shader
|
||||
static const char *FRAG_SHADER_BLUR =
|
||||
"#version 110\n"
|
||||
"uniform float offset_x;\n"
|
||||
"uniform float offset_y;\n"
|
||||
"uniform float factor_center;\n"
|
||||
"uniform sampler2D tex_scr;\n"
|
||||
"\n"
|
||||
"void main() {\n"
|
||||
" vec4 sum = vec4(0.0, 0.0, 0.0, 0.0);\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x - offset_x, gl_TexCoord[0].y - offset_y));\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x - offset_x, gl_TexCoord[0].y));\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x - offset_x, gl_TexCoord[0].y + offset_y));\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x, gl_TexCoord[0].y - offset_y));\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x, gl_TexCoord[0].y)) * factor_center;\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x, gl_TexCoord[0].y + offset_y));\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x + offset_x, gl_TexCoord[0].y - offset_y));\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x + offset_x, gl_TexCoord[0].y));\n"
|
||||
" sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x + offset_x, gl_TexCoord[0].y + offset_y));\n"
|
||||
" gl_FragColor = sum / (factor_center + 8.0);\n"
|
||||
"}\n"
|
||||
;
|
||||
ps->glx_frag_shader_blur = glx_create_shader(GL_FRAGMENT_SHADER, FRAG_SHADER_BLUR);
|
||||
if (!ps->glx_frag_shader_blur) {
|
||||
printf_errf("(): Failed to create fragment shader.");
|
||||
return false;
|
||||
}
|
||||
|
||||
ps->glx_prog_blur = glx_create_program(&ps->glx_frag_shader_blur, 1);
|
||||
if (!ps->glx_prog_blur) {
|
||||
printf_errf("(): Failed to create GLSL program.");
|
||||
return false;
|
||||
}
|
||||
|
||||
#define P_GET_UNIFM_LOC(name, target) { \
|
||||
ps->target = glGetUniformLocation(ps->glx_prog_blur, name); \
|
||||
if (ps->target < 0) { \
|
||||
printf_errf("(): Failed to get location of uniform '" name "'."); \
|
||||
return false; \
|
||||
} \
|
||||
}
|
||||
|
||||
P_GET_UNIFM_LOC("factor_center", glx_prog_blur_unifm_factor_center);
|
||||
P_GET_UNIFM_LOC("offset_x", glx_prog_blur_unifm_offset_x);
|
||||
P_GET_UNIFM_LOC("offset_y", glx_prog_blur_unifm_offset_y);
|
||||
|
||||
#undef P_GET_UNIFM_LOC
|
||||
|
||||
return true;
|
||||
#else
|
||||
printf_errf("(): GLSL support not compiled in. Cannot do blur with GLX backend.");
|
||||
return false;
|
||||
#endif
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -590,7 +644,8 @@ glx_set_clip(session_t *ps, XserverRegion reg) {
|
|||
}
|
||||
|
||||
bool
|
||||
glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z) {
|
||||
glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z,
|
||||
GLfloat factor_center) {
|
||||
// Read destination pixels into a texture
|
||||
GLuint tex_scr = 0;
|
||||
glGenTextures(1, &tex_scr);
|
||||
|
|
@ -617,10 +672,18 @@ glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z) {
|
|||
#endif
|
||||
|
||||
// Paint it back
|
||||
// TODO: Blur function. We are using color negation for testing now.
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_ONE_MINUS_SRC_COLOR);
|
||||
// Color negation for testing...
|
||||
// glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
|
||||
// glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
|
||||
// glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_ONE_MINUS_SRC_COLOR);
|
||||
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
#ifdef CONFIG_VSYNC_OPENGL_GLSL
|
||||
glUseProgram(ps->glx_prog_blur);
|
||||
glUniform1f(ps->glx_prog_blur_unifm_offset_x, 1.0f / width);
|
||||
glUniform1f(ps->glx_prog_blur_unifm_offset_y, 1.0f / height);
|
||||
glUniform1f(ps->glx_prog_blur_unifm_factor_center, factor_center);
|
||||
#endif
|
||||
|
||||
glBegin(GL_QUADS);
|
||||
|
||||
|
|
@ -653,6 +716,9 @@ glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z) {
|
|||
|
||||
glEnd();
|
||||
|
||||
#ifdef CONFIG_VSYNC_OPENGL_GLSL
|
||||
glUseProgram(0);
|
||||
#endif
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
glBindTexture(tex_tgt, 0);
|
||||
glDeleteTextures(1, &tex_scr);
|
||||
|
|
@ -668,8 +734,6 @@ bool
|
|||
glx_render(session_t *ps, const glx_texture_t *ptex,
|
||||
int x, int y, int dx, int dy, int width, int height, int z,
|
||||
double opacity, bool neg, XserverRegion reg_tgt) {
|
||||
bool blur_background = false;
|
||||
|
||||
if (!ptex || !ptex->texture) {
|
||||
printf_errf("(): Missing texture.");
|
||||
return false;
|
||||
|
|
@ -678,8 +742,6 @@ glx_render(session_t *ps, const glx_texture_t *ptex,
|
|||
// Enable blending if needed
|
||||
if (opacity < 1.0 || GLX_TEXTURE_FORMAT_RGBA_EXT ==
|
||||
ps->glx_fbconfigs[ptex->depth]->texture_fmt) {
|
||||
if (!ps->o.glx_no_stencil && blur_background)
|
||||
glx_blur_dst(ps, dx, dy, width, height, z - 0.5);
|
||||
|
||||
glEnable(GL_BLEND);
|
||||
|
||||
|
|
@ -832,8 +894,7 @@ glx_create_shader_end:
|
|||
}
|
||||
|
||||
GLuint
|
||||
glx_create_program(GLenum shader_type, const GLuint * const shaders,
|
||||
int nshaders) {
|
||||
glx_create_program(const GLuint * const shaders, int nshaders) {
|
||||
bool success = false;
|
||||
GLuint program = glCreateProgram();
|
||||
if (!program) {
|
||||
|
|
@ -863,6 +924,10 @@ glx_create_program(GLenum shader_type, const GLuint * const shaders,
|
|||
success = true;
|
||||
|
||||
glx_create_program_end:
|
||||
if (program) {
|
||||
for (int i = 0; i < nshaders; ++i)
|
||||
glDetachShader(program, shaders[i]);
|
||||
}
|
||||
if (program && !success) {
|
||||
glDeleteProgram(program);
|
||||
program = 0;
|
||||
|
|
|
|||
Loading…
Reference in New Issue