static gboolean
should_use_rectangle (void)
{
_COGL_GET_CONTEXT (ctxt, FALSE);
if (ctxt->winsys.rectangle_state == COGL_WINSYS_RECTANGLE_STATE_UNKNOWN)
{
if (cogl_features_available (COGL_FEATURE_TEXTURE_RECTANGLE))
{
const char *rect_env;
/* Use the rectangle only if it is available and either:
the COGL_PIXMAP_TEXTURE_RECTANGLE environment variable is
set to 'force'
*or*
the env var is set to 'allow' or not set and NPOTs textures
are not available */
ctxt->winsys.rectangle_state =
cogl_features_available (COGL_FEATURE_TEXTURE_NPOT) ?
COGL_WINSYS_RECTANGLE_STATE_DISABLE :
COGL_WINSYS_RECTANGLE_STATE_ENABLE;
if ((rect_env = g_getenv ("COGL_PIXMAP_TEXTURE_RECTANGLE")) ||
/* For compatibility, we'll also look at the old Clutter
environment variable */
(rect_env = g_getenv ("CLUTTER_PIXMAP_TEXTURE_RECTANGLE")))
{
if (g_ascii_strcasecmp (rect_env, "force") == 0)
ctxt->winsys.rectangle_state =
COGL_WINSYS_RECTANGLE_STATE_ENABLE;
else if (g_ascii_strcasecmp (rect_env, "disable") == 0)
ctxt->winsys.rectangle_state =
COGL_WINSYS_RECTANGLE_STATE_DISABLE;
else if (g_ascii_strcasecmp (rect_env, "allow"))
g_warning ("Unknown value for COGL_PIXMAP_TEXTURE_RECTANGLE, "
"should be 'force' or 'disable'");
}
}
else
ctxt->winsys.rectangle_state = COGL_WINSYS_RECTANGLE_STATE_DISABLE;
}
return ctxt->winsys.rectangle_state == COGL_WINSYS_RECTANGLE_STATE_ENABLE;
}
CoglVertexArray *
cogl_vertex_array_new (gsize bytes, const void *data)
{
CoglVertexArray *array = g_slice_new (CoglVertexArray);
gboolean use_malloc;
if (!cogl_features_available (COGL_FEATURE_VBOS))
use_malloc = TRUE;
else
use_malloc = FALSE;
/* parent's constructor */
_cogl_buffer_initialize (COGL_BUFFER (array),
bytes,
use_malloc,
COGL_BUFFER_BIND_TARGET_VERTEX_ARRAY,
COGL_BUFFER_USAGE_HINT_VERTEX_ARRAY,
COGL_BUFFER_UPDATE_HINT_STATIC);
_cogl_vertex_array_object_new (array);
if (data)
cogl_buffer_set_data (COGL_BUFFER (array),
0,
data,
bytes);
return array;
}
static gboolean
_cogl_texture_2d_can_create (unsigned int width,
unsigned int height,
CoglPixelFormat internal_format)
{
GLenum gl_intformat;
GLenum gl_type;
/* If the driver doesn't support glGenerateMipmap then we need to
store a copy of the first pixels to cause an update. Instead of
duplicating the code here we'll just make it fallback to
CoglTexture2DSliced */
if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
return FALSE;
/* If NPOT textures aren't supported then the size must be a power
of two */
if (!cogl_features_available (COGL_FEATURE_TEXTURE_NPOT) &&
(!_cogl_texture_2d_is_pot (width) ||
!_cogl_texture_2d_is_pot (height)))
return FALSE;
_cogl_pixel_format_to_gl (internal_format,
&gl_intformat,
NULL,
&gl_type);
/* Check that the driver can create a texture with that size */
if (!_cogl_texture_driver_size_supported (GL_TEXTURE_2D,
gl_intformat,
gl_type,
width,
height))
return FALSE;
return TRUE;
}
void
test_cogl_pipeline_uniforms (TestUtilsGTestFixture *fixture,
void *user_data)
{
TestUtilsSharedState *shared_state = user_data;
/* If shaders aren't supported then we can't run the test */
if (cogl_features_available (COGL_FEATURE_SHADERS_GLSL))
{
TestState state;
init_state (&state);
cogl_ortho (/* left, right */
0, cogl_framebuffer_get_width (shared_state->fb),
/* bottom, top */
cogl_framebuffer_get_height (shared_state->fb), 0,
/* z near, far */
-1, 100);
paint (&state);
validate_result ();
/* Try the test again after querying the location of a large
number of uniforms. This should verify that the bitmasks
still work even if they have to allocate a separate array to
store the bits */
init_long_pipeline_state (&state);
paint (&state);
paint_long_pipeline (&state);
validate_result ();
validate_long_pipeline_result ();
destroy_state (&state);
if (g_test_verbose ())
g_print ("OK\n");
}
else if (g_test_verbose ())
g_print ("Skipping\n");
}
CoglHandle
cogl_pixel_buffer_new_EXP (unsigned int size)
{
CoglPixelBuffer *pixel_buffer = g_slice_new0 (CoglPixelBuffer);
CoglBuffer *buffer = COGL_BUFFER (pixel_buffer);
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
/* parent's constructor */
_cogl_buffer_initialize (buffer,
size,
COGL_BUFFER_USAGE_HINT_TEXTURE,
COGL_BUFFER_UPDATE_HINT_STATIC);
/* malloc version only for GLES */
#if !defined (COGL_HAS_GLES)
if (cogl_features_available (COGL_FEATURE_PBOS))
{
/* PBOS */
buffer->vtable = &cogl_pixel_buffer_vtable;
GE( glGenBuffers (1, &buffer->gl_handle) );
COGL_BUFFER_SET_FLAG (buffer, BUFFER_OBJECT);
}
else
#endif
{
/* malloc fallback subclass */
buffer->vtable = &cogl_malloc_pixel_buffer_vtable;
/* create the buffer here as there's no point for a lazy allocation in
* the malloc case */
buffer->data = g_malloc (size);
}
pixel_buffer->flags = COGL_PIXEL_BUFFER_FLAG_NONE;
/* return COGL_INVALID_HANDLE; */
return _cogl_pixel_buffer_handle_new (pixel_buffer);
}
static gboolean
get_texture_bits_via_offscreen (CoglHandle texture_handle,
int x,
int y,
int width,
int height,
guint8 *dst_bits,
unsigned int dst_rowstride,
CoglPixelFormat dst_format)
{
CoglFramebuffer *framebuffer;
_COGL_GET_CONTEXT (ctx, FALSE);
if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
return FALSE;
framebuffer = _cogl_offscreen_new_to_texture_full
(texture_handle,
COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL,
0);
if (framebuffer == NULL)
return FALSE;
cogl_push_framebuffer (framebuffer);
_cogl_read_pixels_with_rowstride (x, y, width, height,
COGL_READ_PIXELS_COLOR_BUFFER,
dst_format, dst_bits, dst_rowstride);
cogl_pop_framebuffer ();
cogl_object_unref (framebuffer);
return TRUE;
}
void
_cogl_flush_clip_state (CoglClipStackState *clip_state)
{
CoglClipStack *stack;
int has_clip_planes;
gboolean using_clip_planes = FALSE;
gboolean using_stencil_buffer = FALSE;
GList *node;
int scissor_x0 = 0;
int scissor_y0 = 0;
int scissor_x1 = G_MAXINT;
int scissor_y1 = G_MAXINT;
CoglMatrixStack *modelview_stack =
_cogl_framebuffer_get_modelview_stack (_cogl_get_framebuffer ());
if (!clip_state->stack_dirty)
return;
/* The current primitive journal does not support tracking changes to the
* clip stack... */
_cogl_journal_flush ();
/* XXX: the handling of clipping is quite complex. It may involve use of
* the Cogl Journal or other Cogl APIs which may end up recursively
* wanting to ensure the clip state is flushed. We need to ensure we
* don't recurse infinitely...
*/
clip_state->stack_dirty = FALSE;
has_clip_planes = cogl_features_available (COGL_FEATURE_FOUR_CLIP_PLANES);
stack = clip_state->stacks->data;
clip_state->stencil_used = FALSE;
disable_clip_planes ();
disable_stencil_buffer ();
GE (glDisable (GL_SCISSOR_TEST));
/* If the stack is empty then there's nothing else to do */
if (stack->stack_top == NULL)
return;
/* Find the bottom of the stack */
for (node = stack->stack_top; node->next; node = node->next);
/* Re-add every entry from the bottom of the stack up */
for (; node; node = node->prev)
{
gpointer entry = node->data;
CoglClipStackEntryType type = *(CoglClipStackEntryType *) entry;
if (type == COGL_CLIP_STACK_PATH)
{
CoglClipStackEntryPath *path = (CoglClipStackEntryPath *) entry;
_cogl_matrix_stack_push (modelview_stack);
_cogl_matrix_stack_set (modelview_stack, &path->matrix);
_cogl_add_path_to_stencil_buffer (path->path_nodes_min,
path->path_nodes_max,
path->path_size,
path->path,
using_stencil_buffer,
TRUE);
_cogl_matrix_stack_pop (modelview_stack);
using_stencil_buffer = TRUE;
/* We can't use clip planes any more */
has_clip_planes = FALSE;
}
else if (type == COGL_CLIP_STACK_RECT)
{
CoglClipStackEntryRect *rect = (CoglClipStackEntryRect *) entry;
_cogl_matrix_stack_push (modelview_stack);
_cogl_matrix_stack_set (modelview_stack, &rect->matrix);
/* If this is the first entry and we support clip planes then use
that instead */
if (has_clip_planes)
{
set_clip_planes (rect->x0,
rect->y0,
rect->x1,
rect->y1);
using_clip_planes = TRUE;
/* We can't use clip planes a second time */
has_clip_planes = FALSE;
}
else
{
add_stencil_clip_rectangle (rect->x0,
rect->y0,
rect->x1,
rect->y1,
!using_stencil_buffer);
using_stencil_buffer = TRUE;
}
_cogl_matrix_stack_pop (modelview_stack);
}
else
{
/* Get the intersection of all window space rectangles in the clip
* stack */
CoglClipStackEntryWindowRect *window_rect = entry;
scissor_x0 = MAX (scissor_x0, window_rect->x0);
scissor_y0 = MAX (scissor_y0, window_rect->y0);
scissor_x1 = MIN (scissor_x1, window_rect->x1);
scissor_y1 = MIN (scissor_y1, window_rect->y1);
}
}
/* Enabling clip planes is delayed to now so that they won't affect
setting up the stencil buffer */
if (using_clip_planes)
enable_clip_planes ();
if (scissor_x0 >= scissor_x1 || scissor_y0 >= scissor_y1)
scissor_x0 = scissor_y0 = scissor_x1 = scissor_y1 = 0;
if (!(scissor_x0 == 0 && scissor_y0 == 0 &&
scissor_x1 == G_MAXINT && scissor_y1 == G_MAXINT))
{
GE (glEnable (GL_SCISSOR_TEST));
GE (glScissor (scissor_x0, scissor_y0,
scissor_x1 - scissor_x0,
scissor_y1 - scissor_y0));
}
clip_state->stencil_used = using_stencil_buffer;
}
static gboolean
_cogl_pipeline_vertend_glsl_start (CoglPipeline *pipeline,
int n_layers,
unsigned long pipelines_difference)
{
CoglPipelineShaderState *shader_state;
CoglPipeline *template_pipeline = NULL;
CoglProgram *user_program;
_COGL_GET_CONTEXT (ctx, FALSE);
if (!cogl_features_available (COGL_FEATURE_SHADERS_GLSL))
return FALSE;
user_program = cogl_pipeline_get_user_program (pipeline);
/* If the user program has a vertex shader that isn't GLSL then the
appropriate vertend for that language should handle it */
if (user_program &&
_cogl_program_has_vertex_shader (user_program) &&
_cogl_program_get_language (user_program) != COGL_SHADER_LANGUAGE_GLSL)
return FALSE;
/* Now lookup our glsl backend private state (allocating if
* necessary) */
shader_state = get_shader_state (pipeline);
if (shader_state == NULL)
{
CoglPipeline *authority;
/* Get the authority for anything affecting vertex shader
state */
authority = _cogl_pipeline_find_equivalent_parent
(pipeline,
COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN &
~COGL_PIPELINE_STATE_LAYERS,
COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN);
shader_state = get_shader_state (authority);
if (shader_state == NULL)
{
/* Check if there is already a similar cached pipeline whose
shader state we can share */
if (G_LIKELY (!(COGL_DEBUG_ENABLED
(COGL_DEBUG_DISABLE_PROGRAM_CACHES))))
{
template_pipeline =
_cogl_pipeline_cache_get_vertex_template (ctx->pipeline_cache,
authority);
shader_state = get_shader_state (template_pipeline);
}
if (shader_state)
shader_state->ref_count++;
else
shader_state = shader_state_new ();
set_shader_state (authority, shader_state);
if (template_pipeline)
{
shader_state->ref_count++;
set_shader_state (template_pipeline, shader_state);
}
}
if (authority != pipeline)
{
shader_state->ref_count++;
set_shader_state (pipeline, shader_state);
}
}
if (shader_state->gl_shader)
{
/* If we already have a valid GLSL shader then we don't need to
generate a new one. However if there's a user program and it
has changed since the last link then we do need a new shader */
if (user_program == NULL ||
shader_state->user_program_age == user_program->age)
return TRUE;
/* We need to recreate the shader so destroy the existing one */
GE( ctx, glDeleteShader (shader_state->gl_shader) );
shader_state->gl_shader = 0;
}
/* If we make it here then we have a shader_state struct without a gl_shader
either because this is the first time we've encountered it or
because the user program has changed */
if (user_program)
shader_state->user_program_age = user_program->age;
/* If the user program contains a vertex shader then we don't need
to generate one */
if (user_program &&
_cogl_program_has_vertex_shader (user_program))
return TRUE;
/* We reuse two grow-only GStrings for code-gen. One string
contains the uniform and attribute declarations while the
other contains the main function. We need two strings
because we need to dynamically declare attributes as the
add_layer callback is invoked */
g_string_set_size (ctx->codegen_header_buffer, 0);
g_string_set_size (ctx->codegen_source_buffer, 0);
shader_state->header = ctx->codegen_header_buffer;
shader_state->source = ctx->codegen_source_buffer;
g_string_append (shader_state->source,
"void\n"
"main ()\n"
"{\n");
if (ctx->driver == COGL_DRIVER_GLES2)
/* There is no builtin uniform for the pointsize on GLES2 so we need
to copy it from the custom uniform in the vertex shader */
g_string_append (shader_state->source,
" cogl_point_size_out = cogl_point_size_in;\n");
/* On regular OpenGL we'll just flush the point size builtin */
else if (pipelines_difference & COGL_PIPELINE_STATE_POINT_SIZE)
{
CoglPipeline *authority =
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_POINT_SIZE);
if (ctx->point_size_cache != authority->big_state->point_size)
{
GE( ctx, glPointSize (authority->big_state->point_size) );
ctx->point_size_cache = authority->big_state->point_size;
}
}
return TRUE;
}
static GSList *
clutter_gst_build_renderers_list (ClutterGstSymbols *syms)
{
GSList *list = NULL;
const gchar *gl_extensions;
GLint nb_texture_units = 0;
gint features = 0, i;
/* The order of the list of renderers is important. They will be prepended
* to a GSList and we'll iterate over that list to choose the first matching
* renderer. Thus if you want to use the fp renderer over the glsl one, the
* fp renderer has to be put after the glsl one in this array */
ClutterGstRenderer *renderers[] =
{
&rgb24_renderer,
&rgb32_renderer,
&yv12_glsl_renderer,
&i420_glsl_renderer,
#ifdef CLUTTER_COGL_HAS_GL
&yv12_fp_renderer,
&i420_fp_renderer,
#endif
&ayuv_glsl_renderer,
NULL
};
/* get the features */
gl_extensions = (const gchar*) glGetString (GL_EXTENSIONS);
glGetIntegerv (CGL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &nb_texture_units);
if (nb_texture_units >= 3)
features |= CLUTTER_GST_MULTI_TEXTURE;
#ifdef CLUTTER_COGL_HAS_GL
if (cogl_check_extension ("GL_ARB_fragment_program", gl_extensions))
{
/* the shaders we'll feed to the GPU are simple enough, we don't need
* to check GL limits for GL_FRAGMENT_PROGRAM_ARB */
syms->glGenProgramsARB = (GLGENPROGRAMSPROC)
cogl_get_proc_address ("glGenProgramsARB");
syms->glBindProgramARB = (GLBINDPROGRAMPROC)
cogl_get_proc_address ("glBindProgramARB");
syms->glProgramStringARB = (GLPROGRAMSTRINGPROC)
cogl_get_proc_address ("glProgramStringARB");
if (syms->glGenProgramsARB &&
syms->glBindProgramARB &&
syms->glProgramStringARB)
{
features |= CLUTTER_GST_FP;
}
}
#endif
if (cogl_features_available (COGL_FEATURE_SHADERS_GLSL))
features |= CLUTTER_GST_GLSL;
GST_INFO ("GL features: 0x%08x", features);
for (i = 0; renderers[i]; i++)
{
gint needed = renderers[i]->flags;
if ((needed & features) == needed)
list = g_slist_prepend (list, renderers[i]);
}
return list;
}
static gboolean
get_fbconfig_for_depth (unsigned int depth,
GLXFBConfig *fbconfig_ret,
gboolean *can_mipmap_ret)
{
GLXFBConfig *fbconfigs;
int n_elements, i;
Display *dpy;
int db, stencil, alpha, mipmap, rgba, value;
int spare_cache_slot = 0;
gboolean found = FALSE;
_COGL_GET_CONTEXT (ctxt, FALSE);
/* Check if we've already got a cached config for this depth */
for (i = 0; i < COGL_WINSYS_N_CACHED_CONFIGS; i++)
if (ctxt->winsys.glx_cached_configs[i].depth == -1)
spare_cache_slot = i;
else if (ctxt->winsys.glx_cached_configs[i].depth == depth)
{
*fbconfig_ret = ctxt->winsys.glx_cached_configs[i].fb_config;
*can_mipmap_ret = ctxt->winsys.glx_cached_configs[i].can_mipmap;
return ctxt->winsys.glx_cached_configs[i].found;
}
dpy = _cogl_xlib_get_display ();
fbconfigs = glXGetFBConfigs (dpy, DefaultScreen (dpy),
&n_elements);
db = G_MAXSHORT;
stencil = G_MAXSHORT;
mipmap = 0;
rgba = 0;
for (i = 0; i < n_elements; i++)
{
XVisualInfo *vi;
int visual_depth;
vi = glXGetVisualFromFBConfig (dpy,
fbconfigs[i]);
if (vi == NULL)
continue;
visual_depth = vi->depth;
XFree (vi);
if (visual_depth != depth)
continue;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_ALPHA_SIZE,
&alpha);
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BUFFER_SIZE,
&value);
if (value != depth && (value - alpha) != depth)
continue;
value = 0;
if (depth == 32)
{
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BIND_TO_TEXTURE_RGBA_EXT,
&value);
if (value)
rgba = 1;
}
if (!value)
{
if (rgba)
continue;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BIND_TO_TEXTURE_RGB_EXT,
&value);
if (!value)
continue;
}
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_DOUBLEBUFFER,
&value);
if (value > db)
continue;
db = value;
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_STENCIL_SIZE,
&value);
if (value > stencil)
continue;
stencil = value;
/* glGenerateMipmap is defined in the offscreen extension */
if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
{
glXGetFBConfigAttrib (dpy,
fbconfigs[i],
GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
&value);
if (value < mipmap)
continue;
mipmap = value;
}
*fbconfig_ret = fbconfigs[i];
*can_mipmap_ret = mipmap;
found = TRUE;
}
if (n_elements)
XFree (fbconfigs);
ctxt->winsys.glx_cached_configs[spare_cache_slot].depth = depth;
ctxt->winsys.glx_cached_configs[spare_cache_slot].found = found;
ctxt->winsys.glx_cached_configs[spare_cache_slot].fb_config = *fbconfig_ret;
ctxt->winsys.glx_cached_configs[spare_cache_slot].can_mipmap = mipmap;
return found;
}
