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Diffstat (limited to 'src/gallium/state_trackers/glx/xlib/xm_st.c')
-rw-r--r--src/gallium/state_trackers/glx/xlib/xm_st.c269
1 files changed, 269 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/glx/xlib/xm_st.c b/src/gallium/state_trackers/glx/xlib/xm_st.c
new file mode 100644
index 0000000000..c5ea5c1549
--- /dev/null
+++ b/src/gallium/state_trackers/glx/xlib/xm_st.c
@@ -0,0 +1,269 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.9
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Chia-I Wu <olv@lunarg.com>
+ */
+
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+
+#include "xm_api.h"
+#include "xm_st.h"
+
+/* support OpenGL by default */
+#ifndef XMESA_ST_MODULE
+#define XMESA_ST_MODULE st_module_OpenGL
+#endif
+
+struct xmesa_st_framebuffer {
+ struct pipe_screen *screen;
+ XMesaBuffer buffer;
+
+ struct st_visual stvis;
+
+ unsigned texture_width, texture_height;
+ struct pipe_texture *textures[ST_ATTACHMENT_COUNT];
+
+ struct pipe_surface *display_surface;
+};
+
+static INLINE struct xmesa_st_framebuffer *
+xmesa_st_framebuffer(struct st_framebuffer_iface *stfbi)
+{
+ return (struct xmesa_st_framebuffer *) stfbi->st_manager_private;
+}
+
+/**
+ * Display an attachment to the xlib_drawable of the framebuffer.
+ */
+static boolean
+xmesa_st_framebuffer_display(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type statt)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ struct pipe_texture *ptex = xstfb->textures[statt];
+ struct pipe_surface *psurf;
+
+ if (!ptex)
+ return TRUE;
+
+ psurf = xstfb->display_surface;
+ /* (re)allocate the surface for the texture to be displayed */
+ if (!psurf || psurf->texture != ptex) {
+ pipe_surface_reference(&xstfb->display_surface, NULL);
+
+ psurf = xstfb->screen->get_tex_surface(xstfb->screen,
+ ptex, 0, 0, 0, PIPE_BUFFER_USAGE_CPU_READ);
+ if (!psurf)
+ return FALSE;
+
+ xstfb->display_surface = psurf;
+ }
+
+ xstfb->screen->flush_frontbuffer(xstfb->screen, psurf, &xstfb->buffer->ws);
+
+ return TRUE;
+}
+
+/**
+ * Remove outdated textures and create the requested ones.
+ */
+static void
+xmesa_st_framebuffer_validate_textures(struct st_framebuffer_iface *stfbi,
+ const enum st_attachment_type *statts,
+ unsigned count)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ struct pipe_texture templ;
+ unsigned request_mask, i;
+
+ request_mask = 0;
+ for (i = 0; i < count; i++)
+ request_mask |= 1 << statts[i];
+
+ memset(&templ, 0, sizeof(templ));
+ templ.target = PIPE_TEXTURE_2D;
+ templ.width0 = xstfb->texture_width;
+ templ.height0 = xstfb->texture_height;
+ templ.depth0 = 1;
+ templ.last_level = 0;
+
+ for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+ struct pipe_texture *ptex = xstfb->textures[i];
+ enum pipe_format format;
+ unsigned tex_usage;
+
+ /* remove outdated textures */
+ if (ptex && (ptex->width0 != xstfb->texture_width ||
+ ptex->height0 != xstfb->texture_height)) {
+ pipe_texture_reference(&xstfb->textures[i], NULL);
+ ptex = NULL;
+ }
+
+ /* the texture already exists or not requested */
+ if (ptex || !(request_mask & (1 << i)))
+ continue;
+
+ switch (i) {
+ case ST_ATTACHMENT_FRONT_LEFT:
+ case ST_ATTACHMENT_BACK_LEFT:
+ case ST_ATTACHMENT_FRONT_RIGHT:
+ case ST_ATTACHMENT_BACK_RIGHT:
+ format = xstfb->stvis.color_format;
+ tex_usage = PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
+ PIPE_TEXTURE_USAGE_RENDER_TARGET;
+ break;
+ case ST_ATTACHMENT_DEPTH_STENCIL:
+ format = xstfb->stvis.depth_stencil_format;
+ tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
+ break;
+ default:
+ format = PIPE_FORMAT_NONE;
+ break;
+ }
+
+ if (format != PIPE_FORMAT_NONE) {
+ templ.format = format;
+ templ.tex_usage = tex_usage;
+
+ xstfb->textures[i] =
+ xstfb->screen->texture_create(xstfb->screen, &templ);
+ }
+ }
+}
+
+static boolean
+xmesa_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
+ const enum st_attachment_type *statts,
+ unsigned count,
+ struct pipe_texture **out)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ unsigned i;
+
+ /* revalidate textures */
+ if (xstfb->buffer->width != xstfb->texture_width ||
+ xstfb->buffer->height != xstfb->texture_height) {
+ xstfb->texture_width = xstfb->buffer->width;
+ xstfb->texture_height = xstfb->buffer->height;
+
+ xmesa_st_framebuffer_validate_textures(stfbi, statts, count);
+ }
+
+ for (i = 0; i < count; i++) {
+ out[i] = NULL;
+ pipe_texture_reference(&out[i], xstfb->textures[statts[i]]);
+ }
+
+ return TRUE;
+}
+
+static boolean
+xmesa_st_framebuffer_flush_front(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type statt)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ boolean ret;
+
+ ret = xmesa_st_framebuffer_flush_front(stfbi, statt);
+ if (ret)
+ xmesa_check_buffer_size(xstfb->buffer);
+
+ return ret;
+}
+
+struct st_framebuffer_iface *
+xmesa_create_st_framebuffer(struct pipe_screen *screen, XMesaBuffer b)
+{
+ struct st_framebuffer_iface *stfbi;
+ struct xmesa_st_framebuffer *xstfb;
+
+ stfbi = CALLOC_STRUCT(st_framebuffer_iface);
+ xstfb = CALLOC_STRUCT(xmesa_st_framebuffer);
+ if (!stfbi || !xstfb) {
+ if (stfbi)
+ FREE(stfbi);
+ if (xstfb)
+ FREE(xstfb);
+ return NULL;
+ }
+
+ xstfb->screen = screen;
+ xstfb->buffer = b;
+ xstfb->stvis = b->xm_visual->stvis;
+
+ stfbi->visual = &xstfb->stvis;
+ stfbi->flush_front = xmesa_st_framebuffer_flush_front;
+ stfbi->validate = xmesa_st_framebuffer_validate;
+ stfbi->st_manager_private = (void *) xstfb;
+
+ return stfbi;
+}
+
+void
+xmesa_destroy_st_framebuffer(struct st_framebuffer_iface *stfbi)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+
+ FREE(xstfb);
+ FREE(stfbi);
+}
+
+void
+xmesa_swap_st_framebuffer(struct st_framebuffer_iface *stfbi)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ boolean ret;
+
+ ret = xmesa_st_framebuffer_display(stfbi, ST_ATTACHMENT_BACK_LEFT);
+ if (ret) {
+ struct pipe_texture **front, **back, *tmp;
+
+ front = &xstfb->textures[ST_ATTACHMENT_FRONT_LEFT];
+ back = &xstfb->textures[ST_ATTACHMENT_BACK_LEFT];
+ /* swap textures only if the front texture has been allocated */
+ if (*front) {
+ tmp = *front;
+ *front = *back;
+ *back = tmp;
+ }
+
+ xmesa_check_buffer_size(xstfb->buffer);
+ }
+}
+
+void
+xmesa_copy_st_framebuffer(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type src,
+ enum st_attachment_type dst,
+ int x, int y, int w, int h)
+{
+ /* TODO */
+}
+
+struct st_api *
+xmesa_create_st_api(void)
+{
+ return XMESA_ST_MODULE.create_api();
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-27 08:03:38 +0000