diff options
Diffstat (limited to 'gdk/gdkgl.c')
-rw-r--r-- | gdk/gdkgl.c | 347 |
1 files changed, 44 insertions, 303 deletions
diff --git a/gdk/gdkgl.c b/gdk/gdkgl.c index b62fc2d87a..3a175b638c 100644 --- a/gdk/gdkgl.c +++ b/gdk/gdkgl.c @@ -340,18 +340,11 @@ gdk_cairo_draw_from_gl (cairo_t *cr, GdkGLContext *paint_context; cairo_surface_t *image; cairo_matrix_t matrix; - int dx, dy, window_scale; - gboolean trivial_transform; - cairo_surface_t *group_target; - GdkWindow *direct_window, *impl_window; guint framebuffer; int alpha_size = 0; cairo_region_t *clip_region; GdkGLContextPaintData *paint_data; - - impl_window = window->impl_window; - - window_scale = gdk_window_get_scale_factor (impl_window); + int major, minor, version; paint_context = gdk_window_get_paint_gl_context (window, NULL); if (paint_context == NULL) @@ -388,324 +381,71 @@ gdk_cairo_draw_from_gl (cairo_t *cr, return; } - group_target = cairo_get_group_target (cr); - direct_window = cairo_surface_get_user_data (group_target, &direct_key); - cairo_get_matrix (cr, &matrix); - dx = matrix.x0; - dy = matrix.y0; - - /* Trivial == integer-only translation */ - trivial_transform = - (double)dx == matrix.x0 && (double)dy == matrix.y0 && - matrix.xx == 1.0 && matrix.xy == 0.0 && - matrix.yx == 0.0 && matrix.yy == 1.0; - - /* For direct paint of non-alpha renderbuffer, we can - just do a bitblit */ - if ((_gdk_gl_flags & GDK_GL_SOFTWARE_DRAW_GL) == 0 && - source_type == GL_RENDERBUFFER && - alpha_size == 0 && - direct_window != NULL && - direct_window->current_paint.use_gl && - trivial_transform && - clip_region != NULL) - { - int unscaled_window_height; - int i; + gdk_gl_context_get_version (paint_context, &major, &minor); + version = major * 100 + minor; - /* Create a framebuffer with the source renderbuffer and - make it the current target for reads */ - framebuffer = paint_data->tmp_framebuffer; - glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, framebuffer); - glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_RENDERBUFFER_EXT, source); - glBindFramebufferEXT (GL_DRAW_FRAMEBUFFER_EXT, 0); - - /* Translate to impl coords */ - cairo_region_translate (clip_region, dx, dy); + /* TODO: Use glTexSubImage2D() and do a row-by-row copy to replace + * the GL_UNPACK_ROW_LENGTH support + */ + if (gdk_gl_context_get_use_es (paint_context) && + !(version >= 300 || gdk_gl_context_has_unpack_subimage (paint_context))) + goto out; - glEnable (GL_SCISSOR_TEST); + /* TODO: avoid reading back non-required data due to dest clip */ + image = cairo_surface_create_similar_image (cairo_get_target (cr), + (alpha_size == 0) ? CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32, + width, height); - gdk_window_get_unscaled_size (impl_window, NULL, &unscaled_window_height); - - /* We can use glDrawBuffer on OpenGL only; on GLES 2.0 we are already - * double buffered so we don't need it... - */ - if (!gdk_gl_context_get_use_es (paint_context)) - glDrawBuffer (GL_BACK); - else - { - int maj, min; - - gdk_gl_context_get_version (paint_context, &maj, &min); - - /* ... but on GLES 3.0 we can use the vectorized glDrawBuffers - * call. - */ - if ((maj * 100 + min) >= 300) - { - static const GLenum buffers[] = { GL_BACK }; - - glDrawBuffers (G_N_ELEMENTS (buffers), buffers); - } - } - -#define FLIP_Y(_y) (unscaled_window_height - (_y)) - - for (i = 0; i < cairo_region_num_rectangles (clip_region); i++) - { - cairo_rectangle_int_t clip_rect, dest; - - cairo_region_get_rectangle (clip_region, i, &clip_rect); - clip_rect.x *= window_scale; - clip_rect.y *= window_scale; - clip_rect.width *= window_scale; - clip_rect.height *= window_scale; - - glScissor (clip_rect.x, FLIP_Y (clip_rect.y + clip_rect.height), - clip_rect.width, clip_rect.height); - - dest.x = dx * window_scale; - dest.y = dy * window_scale; - dest.width = width * window_scale / buffer_scale; - dest.height = height * window_scale / buffer_scale; - - if (gdk_rectangle_intersect (&clip_rect, &dest, &dest)) - { - int clipped_src_x = x + (dest.x - dx * window_scale); - int clipped_src_y = y + (height - dest.height - (dest.y - dy * window_scale)); - glBlitFramebufferEXT(clipped_src_x, clipped_src_y, - (clipped_src_x + dest.width), (clipped_src_y + dest.height), - dest.x, FLIP_Y(dest.y + dest.height), - dest.x + dest.width, FLIP_Y(dest.y), - GL_COLOR_BUFFER_BIT, GL_NEAREST); - if (impl_window->current_paint.flushed_region) - { - cairo_rectangle_int_t flushed_rect; - - flushed_rect.x = dest.x / window_scale; - flushed_rect.y = dest.y / window_scale; - flushed_rect.width = (dest.x + dest.width + window_scale - 1) / window_scale - flushed_rect.x; - flushed_rect.height = (dest.y + dest.height + window_scale - 1) / window_scale - flushed_rect.y; - - cairo_region_union_rectangle (impl_window->current_paint.flushed_region, - &flushed_rect); - cairo_region_subtract_rectangle (impl_window->current_paint.need_blend_region, - &flushed_rect); - } - } - } + cairo_surface_set_device_scale (image, buffer_scale, buffer_scale); - glDisable (GL_SCISSOR_TEST); + framebuffer = paint_data->tmp_framebuffer; + glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, framebuffer); - glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0); - -#undef FLIP_Y - - } - /* For direct paint of alpha or non-alpha textures we can use texturing */ - else if ((_gdk_gl_flags & GDK_GL_SOFTWARE_DRAW_GL) == 0 && - source_type == GL_TEXTURE && - direct_window != NULL && - direct_window->current_paint.use_gl && - trivial_transform && - clip_region != NULL) + if (source_type == GL_RENDERBUFFER) { - int unscaled_window_height; - GLint texture_width; - GLint texture_height; - int i, n_rects, n_quads; - GdkTexturedQuad *quads; - cairo_rectangle_int_t clip_rect; - - /* Translate to impl coords */ - cairo_region_translate (clip_region, dx, dy); - - if (alpha_size != 0) - { - cairo_region_t *opaque_region, *blend_region; - - opaque_region = cairo_region_copy (clip_region); - cairo_region_subtract (opaque_region, impl_window->current_paint.flushed_region); - cairo_region_subtract (opaque_region, impl_window->current_paint.need_blend_region); - - if (!cairo_region_is_empty (opaque_region)) - gdk_gl_texture_from_surface (impl_window->current_paint.surface, - opaque_region); - - blend_region = cairo_region_copy (clip_region); - cairo_region_intersect (blend_region, impl_window->current_paint.need_blend_region); - - glEnable (GL_BLEND); - if (!cairo_region_is_empty (blend_region)) - gdk_gl_texture_from_surface (impl_window->current_paint.surface, - blend_region); - - cairo_region_destroy (opaque_region); - cairo_region_destroy (blend_region); - } - - glBindTexture (GL_TEXTURE_2D, source); - - if (gdk_gl_context_get_use_es (paint_context)) - { - texture_width = width; - texture_height = height; - } - else - { - glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &texture_width); - glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &texture_height); - } - - glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); - glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); - glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - - glEnable (GL_SCISSOR_TEST); - - gdk_window_get_unscaled_size (impl_window, NULL, &unscaled_window_height); - -#define FLIP_Y(_y) (unscaled_window_height - (_y)) - - cairo_region_get_extents (clip_region, &clip_rect); - - glScissor (clip_rect.x * window_scale, FLIP_Y ((clip_rect.y + clip_rect.height) * window_scale), - clip_rect.width * window_scale, clip_rect.height * window_scale); - - n_quads = 0; - n_rects = cairo_region_num_rectangles (clip_region); - quads = g_new (GdkTexturedQuad, n_rects); - for (i = 0; i < n_rects; i++) - { - cairo_rectangle_int_t dest; - - cairo_region_get_rectangle (clip_region, i, &clip_rect); - - clip_rect.x *= window_scale; - clip_rect.y *= window_scale; - clip_rect.width *= window_scale; - clip_rect.height *= window_scale; - - dest.x = dx * window_scale; - dest.y = dy * window_scale; - dest.width = width * window_scale / buffer_scale; - dest.height = height * window_scale / buffer_scale; - - if (gdk_rectangle_intersect (&clip_rect, &dest, &dest)) - { - int clipped_src_x = x + (dest.x - dx * window_scale); - int clipped_src_y = y + (height - dest.height - (dest.y - dy * window_scale)); - GdkTexturedQuad quad = { - dest.x, FLIP_Y(dest.y), - dest.x + dest.width, FLIP_Y(dest.y + dest.height), - clipped_src_x / (float)texture_width, (clipped_src_y + dest.height) / (float)texture_height, - (clipped_src_x + dest.width) / (float)texture_width, clipped_src_y / (float)texture_height, - }; - - quads[n_quads++] = quad; - - if (impl_window->current_paint.flushed_region) - { - cairo_rectangle_int_t flushed_rect; - - flushed_rect.x = dest.x / window_scale; - flushed_rect.y = dest.y / window_scale; - flushed_rect.width = (dest.x + dest.width + window_scale - 1) / window_scale - flushed_rect.x; - flushed_rect.height = (dest.y + dest.height + window_scale - 1) / window_scale - flushed_rect.y; - - cairo_region_union_rectangle (impl_window->current_paint.flushed_region, - &flushed_rect); - cairo_region_subtract_rectangle (impl_window->current_paint.need_blend_region, - &flushed_rect); - } - } - } - - if (n_quads > 0) - gdk_gl_texture_quads (paint_context, GL_TEXTURE_2D, n_quads, quads, FALSE); - - g_free (quads); - - if (alpha_size != 0) - glDisable (GL_BLEND); - -#undef FLIP_Y - + /* Create a framebuffer with the source renderbuffer and + make it the current target for reads */ + glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, + GL_RENDERBUFFER_EXT, source); } else { - /* Software fallback */ - int major, minor, version; - - gdk_gl_context_get_version (paint_context, &major, &minor); - version = major * 100 + minor; - - /* TODO: Use glTexSubImage2D() and do a row-by-row copy to replace - * the GL_UNPACK_ROW_LENGTH support - */ - if (gdk_gl_context_get_use_es (paint_context) && - !(version >= 300 || gdk_gl_context_has_unpack_subimage (paint_context))) - goto out; - - /* TODO: avoid reading back non-required data due to dest clip */ - image = cairo_surface_create_similar_image (cairo_get_target (cr), - (alpha_size == 0) ? CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32, - width, height); - - cairo_surface_set_device_scale (image, buffer_scale, buffer_scale); - - framebuffer = paint_data->tmp_framebuffer; - glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, framebuffer); - - if (source_type == GL_RENDERBUFFER) - { - /* Create a framebuffer with the source renderbuffer and - make it the current target for reads */ - glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_RENDERBUFFER_EXT, source); - } - else - { - glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, - GL_TEXTURE_2D, source, 0); - } + glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, + GL_TEXTURE_2D, source, 0); + } - glPixelStorei (GL_PACK_ALIGNMENT, 4); - glPixelStorei (GL_PACK_ROW_LENGTH, cairo_image_surface_get_stride (image) / 4); + glPixelStorei (GL_PACK_ALIGNMENT, 4); + glPixelStorei (GL_PACK_ROW_LENGTH, cairo_image_surface_get_stride (image) / 4); - /* The implicit format conversion is going to make this path slower */ - if (!gdk_gl_context_get_use_es (paint_context)) - glReadPixels (x, y, width, height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, - cairo_image_surface_get_data (image)); - else - glReadPixels (x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, - cairo_image_surface_get_data (image)); + /* The implicit format conversion is going to make this path slower */ + if (!gdk_gl_context_get_use_es (paint_context)) + glReadPixels (x, y, width, height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, + cairo_image_surface_get_data (image)); + else + glReadPixels (x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, + cairo_image_surface_get_data (image)); - glPixelStorei (GL_PACK_ROW_LENGTH, 0); + glPixelStorei (GL_PACK_ROW_LENGTH, 0); - glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0); + glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0); - cairo_surface_mark_dirty (image); + cairo_surface_mark_dirty (image); - /* Invert due to opengl having different origin */ - cairo_scale (cr, 1, -1); - cairo_translate (cr, 0, -height / buffer_scale); + /* Invert due to opengl having different origin */ + cairo_scale (cr, 1, -1); + cairo_translate (cr, 0, -height / buffer_scale); - cairo_set_source_surface (cr, image, 0, 0); - cairo_set_operator (cr, CAIRO_OPERATOR_OVER); - cairo_paint (cr); + cairo_set_source_surface (cr, image, 0, 0); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + cairo_paint (cr); - cairo_surface_destroy (image); - } + cairo_surface_destroy (image); out: if (clip_region) cairo_region_destroy (clip_region); - } /* This is always called with the paint context current */ @@ -726,6 +466,7 @@ gdk_gl_texture_from_surface (cairo_surface_t *surface, float umax, vmax; gboolean use_texture_rectangle; guint target; + paint_context = gdk_gl_context_get_current (); if ((_gdk_gl_flags & GDK_GL_SOFTWARE_DRAW_SURFACE) == 0 && paint_context && |