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/*
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* Copyright © 2010 Kristian Høgsberg |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software Foundation, |
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "compositor.h" |
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struct wlsc_drm_buffer { |
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struct wl_buffer buffer; |
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EGLImageKHR image; |
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}; |
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static void |
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drm_buffer_attach(struct wl_buffer *buffer_base, struct wl_surface *surface) |
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{ |
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struct wlsc_surface *es = (struct wlsc_surface *) surface; |
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struct wlsc_drm_buffer *buffer = |
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(struct wlsc_drm_buffer *) buffer_base; |
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glBindTexture(GL_TEXTURE_2D, es->texture); |
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glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, buffer->image); |
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es->visual = buffer->buffer.visual; |
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} |
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static void |
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drm_buffer_damage(struct wl_buffer *buffer, |
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struct wl_surface *surface, |
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int32_t x, int32_t y, int32_t width, int32_t height) |
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{ |
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} |
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static struct wlsc_drm_buffer * |
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wlsc_drm_buffer_create_for_image(struct wlsc_compositor *compositor, |
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EGLImageKHR *image, |
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int32_t width, int32_t height, |
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struct wl_visual *visual) |
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{ |
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struct wlsc_drm_buffer *buffer; |
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buffer = malloc(sizeof *buffer); |
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if (buffer == NULL) |
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return NULL; |
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buffer->buffer.compositor = &compositor->compositor; |
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buffer->buffer.width = width; |
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buffer->buffer.height = height; |
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buffer->buffer.visual = visual; |
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buffer->buffer.attach = drm_buffer_attach; |
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buffer->buffer.damage = drm_buffer_damage; |
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buffer->image = image; |
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return buffer; |
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} |
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struct wl_buffer * |
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wlsc_drm_buffer_create(struct wlsc_compositor *ec, int width, int height, |
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struct wl_visual *visual, const void *data) |
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{ |
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struct wlsc_drm_buffer *buffer; |
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EGLImageKHR image; |
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GLuint texture; |
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EGLint image_attribs[] = { |
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EGL_WIDTH, 0, |
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EGL_HEIGHT, 0, |
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EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA, |
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EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SCANOUT_MESA, |
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EGL_NONE |
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}; |
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image_attribs[1] = width; |
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image_attribs[3] = height; |
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image = eglCreateDRMImageMESA(ec->display, image_attribs); |
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if (image == NULL) |
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return NULL; |
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buffer = wlsc_drm_buffer_create_for_image(ec, image, |
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width, height, visual); |
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glGenTextures(1, &texture); |
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glBindTexture(GL_TEXTURE_2D, texture); |
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
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glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, buffer->image); |
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, |
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GL_BGRA_EXT, GL_UNSIGNED_BYTE, data); |
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glDeleteTextures(1, &texture); |
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return &buffer->buffer; |
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} |
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