@ -654,11 +654,42 @@ gl_renderer_get_program(struct gl_renderer *gr,
return NULL ;
}
static struct gl_shader *
gl_renderer_create_fallback_shader ( struct gl_renderer * gr )
{
static const struct gl_shader_requirements fallback_requirements = {
. variant = SHADER_VARIANT_SOLID ,
} ;
struct gl_shader * shader ;
shader = gl_shader_create ( gr , & fallback_requirements ) ;
if ( ! shader )
return NULL ;
/*
* This shader must be exempt from any automatic garbage collection .
* It is destroyed explicitly .
*/
wl_list_remove ( & shader - > link ) ;
wl_list_init ( & shader - > link ) ;
return shader ;
}
static bool
gl_renderer_use_program ( struct gl_renderer * gr , struct gl_shader * shader )
gl_renderer_use_program ( struct gl_renderer * gr , struct gl_shader * * shaderp )
{
static const GLfloat fallback_shader_color [ 4 ] = { 0.2 , 0.1 , 0.0 , 1.0 } ;
struct gl_shader * shader = * shaderp ;
if ( ! shader ) {
weston_log ( " Error: trying to use NULL GL shader. \n " ) ;
gr - > current_shader = NULL ;
shader = gr - > fallback_shader ;
glUseProgram ( shader - > program ) ;
glUniform4fv ( shader - > color_uniform , 1 , fallback_shader_color ) ;
glUniform1f ( shader - > alpha_uniform , 1.0f ) ;
* shaderp = shader ;
return false ;
}
@ -694,7 +725,7 @@ triangle_fan_debug(struct weston_view *view, int first, int count)
} ;
shader = gl_renderer_get_program ( gr , & requirements_triangle_fan ) ;
if ( ! gl_renderer_use_program ( gr , shader ) )
if ( ! gl_renderer_use_program ( gr , & shader ) )
return ;
nelems = ( count - 1 + count - 2 ) * 2 ;
@ -716,7 +747,7 @@ triangle_fan_debug(struct weston_view *view, int first, int count)
color [ color_idx + + % ARRAY_LENGTH ( color ) ] ) ;
glDrawElements ( GL_LINES , nelems , GL_UNSIGNED_SHORT , buffer ) ;
gl_renderer_use_program ( gr , prev_shader ) ;
gl_renderer_use_program ( gr , & prev_shader ) ;
free ( buffer ) ;
}
@ -803,26 +834,30 @@ gl_renderer_send_shader_error(struct weston_view *view)
static void
gl_renderer_use_program_with_view_uniforms ( struct gl_renderer * gr ,
struct gl_shader * shader ,
struct gl_shader * * shaderp ,
struct weston_view * view ,
struct weston_output * output )
{
int i ;
struct gl_surface_state * gs = get_surface_state ( view - > surface ) ;
struct gl_output_state * go = get_output_state ( output ) ;
struct gl_shader * shader ;
bool ok ;
if ( ! gl_renderer_use_program ( gr , shader ) ) {
gl_renderer_send_shader_error ( view ) ;
return ;
}
ok = gl_renderer_use_program ( gr , shaderp ) ;
shader = * shaderp ;
glUniformMatrix4fv ( shader - > proj_uniform ,
1 , GL_FALSE , go - > output_matrix . d ) ;
glUniform4fv ( shader - > color_uniform , 1 , gs - > color ) ;
glUniform1f ( shader - > alpha_uniform , view - > alpha ) ;
for ( i = 0 ; i < gs - > num_textures ; i + + )
glUniform1i ( shader - > tex_uniforms [ i ] , i ) ;
if ( ok ) {
glUniform4fv ( shader - > color_uniform , 1 , gs - > color ) ;
glUniform1f ( shader - > alpha_uniform , view - > alpha ) ;
for ( i = 0 ; i < gs - > num_textures ; i + + )
glUniform1i ( shader - > tex_uniforms [ i ] , i ) ;
} else {
gl_renderer_send_shader_error ( view ) ;
}
}
static int
@ -988,7 +1023,7 @@ draw_view(struct weston_view *ev, struct weston_output *output,
if ( gr - > fan_debug ) {
shader = gl_renderer_get_program ( gr ,
& requirements_triangle_fan ) ;
gl_renderer_use_program_with_view_uniforms ( gr , shader ,
gl_renderer_use_program_with_view_uniforms ( gr , & shader ,
ev , output ) ;
}
@ -1024,7 +1059,7 @@ draw_view(struct weston_view *ev, struct weston_output *output,
pixman_region32_copy ( & surface_opaque , & ev - > surface - > opaque ) ;
shader = maybe_censor_override ( output , ev ) ;
gl_renderer_use_program_with_view_uniforms ( gr , shader , ev , output ) ;
gl_renderer_use_program_with_view_uniforms ( gr , & shader , ev , output ) ;
if ( pixman_region32_not_empty ( & surface_opaque ) ) {
if ( shader - > key . variant = = SHADER_VARIANT_RGBA ) {
@ -1040,7 +1075,7 @@ draw_view(struct weston_view *ev, struct weston_output *output,
tmp_requirements . variant = SHADER_VARIANT_RGBX ;
tmp_shader = gl_renderer_get_program ( gr , & tmp_requirements ) ;
gl_renderer_use_program_with_view_uniforms ( gr ,
tmp_shader ,
& tmp_shader ,
ev , output ) ;
}
@ -1054,7 +1089,7 @@ draw_view(struct weston_view *ev, struct weston_output *output,
}
if ( pixman_region32_not_empty ( & surface_blend ) ) {
gl_renderer_use_program ( gr , shader ) ;
gl_renderer_use_program ( gr , & shader ) ;
glEnable ( GL_BLEND ) ;
repaint_region ( ev , & repaint , & surface_blend ) ;
gs - > used_in_output_repaint = true ;
@ -1251,7 +1286,7 @@ draw_output_borders(struct weston_output *output,
glDisable ( GL_BLEND ) ;
shader = gl_renderer_get_program ( gr , & requirements_rgba ) ;
if ( ! gl_renderer_use_program ( gr , shader ) )
if ( ! gl_renderer_use_program ( gr , & shader ) )
return ;
glViewport ( 0 , 0 , full_width , full_height ) ;
@ -2823,7 +2858,7 @@ gl_renderer_surface_copy_content(struct weston_surface *surface,
}
shader = gl_renderer_get_program ( gr , & gs - > shader_requirements ) ;
if ( ! gl_renderer_use_program ( gr , shader ) )
if ( ! gl_renderer_use_program ( gr , & shader ) )
return - 1 ;
glGenTextures ( 1 , & tex ) ;
@ -3269,6 +3304,9 @@ gl_renderer_destroy(struct weston_compositor *ec)
wl_list_for_each_safe ( shader , next_shader , & gr - > shader_list , link )
gl_shader_destroy ( shader ) ;
if ( gr - > fallback_shader )
gl_shader_destroy ( gr - > fallback_shader ) ;
/* Work around crash in egl_dri2.c's dri2_make_current() - when does this apply? */
eglMakeCurrent ( gr - > egl_display ,
EGL_NO_SURFACE , EGL_NO_SURFACE ,
@ -3605,6 +3643,12 @@ gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface)
glActiveTexture ( GL_TEXTURE0 ) ;
gr - > fallback_shader = gl_renderer_create_fallback_shader ( gr ) ;
if ( ! gr - > fallback_shader ) {
weston_log ( " Error: compiling fallback shader failed. \n " ) ;
return - 1 ;
}
gr - > fragment_binding =
weston_compositor_add_debug_binding ( ec , KEY_S ,
fragment_debug_binding ,