937d3bcecf
If we are using GLES2, then the version number should be no less than 2.0 rather than no less than 1.3 which is for GL API.
436 lines
14 KiB
C
436 lines
14 KiB
C
/*
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* Copyright © 2008 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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/** @file glamor.c
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* This file covers the initialization and teardown of glamor, and has various
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* functions not responsible for performing rendering.
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*/
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#include <stdlib.h>
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#include "glamor_priv.h"
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static DevPrivateKeyRec glamor_screen_private_key_index;
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DevPrivateKey glamor_screen_private_key = &glamor_screen_private_key_index;
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static DevPrivateKeyRec glamor_pixmap_private_key_index;
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DevPrivateKey glamor_pixmap_private_key = &glamor_pixmap_private_key_index;
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/**
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* glamor_get_drawable_pixmap() returns a backing pixmap for a given drawable.
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*
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* @param drawable the drawable being requested.
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*
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* This function returns the backing pixmap for a drawable, whether it is a
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* redirected window, unredirected window, or already a pixmap. Note that
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* coordinate translation is needed when drawing to the backing pixmap of a
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* redirected window, and the translation coordinates are provided by calling
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* exaGetOffscreenPixmap() on the drawable.
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*/
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PixmapPtr
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glamor_get_drawable_pixmap(DrawablePtr drawable)
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{
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if (drawable->type == DRAWABLE_WINDOW)
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return drawable->pScreen->GetWindowPixmap((WindowPtr)drawable);
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else
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return (PixmapPtr)drawable;
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}
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void
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glamor_set_pixmap_texture(PixmapPtr pixmap, int w, int h, unsigned int tex)
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{
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ScreenPtr screen = pixmap->drawable.pScreen;
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glamor_pixmap_private *pixmap_priv;
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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assert(pixmap_priv);
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pixmap_priv->tex = tex;
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/* Create a framebuffer object wrapping the texture so that we can render
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* to it.
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*/
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pixmap_priv->gl_fbo = 1;
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pixmap_priv->gl_tex = 1;
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glamor_pixmap_ensure_fb(pixmap);
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screen->ModifyPixmapHeader(pixmap, w, h, 0, 0,
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(((w * pixmap->drawable.bitsPerPixel +
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7) / 8) + 3) & ~3,
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NULL);
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}
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/* Set screen pixmap. If tex equal to 0, means it is called from ephyr. */
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void
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glamor_set_screen_pixmap_texture(ScreenPtr screen, int w, int h, unsigned int tex)
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{
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PixmapPtr pixmap = screen->GetScreenPixmap(screen);
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glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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glamor_set_pixmap_texture(pixmap, w, h, tex);
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glamor_priv->screen_fbo = pixmap_priv->fb;
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pixmap_priv->pending_op.type = GLAMOR_PENDING_NONE;
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}
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#define GLAMOR_PIXMAP_MEMORY 0
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#define GLAMOR_PIXMAP_TEXTURE 1
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static PixmapPtr
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glamor_create_pixmap(ScreenPtr screen, int w, int h, int depth,
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unsigned int usage)
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{
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PixmapPtr pixmap;
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GLenum format;
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GLuint tex;
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int type = GLAMOR_PIXMAP_TEXTURE;
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glamor_pixmap_private *pixmap_priv;
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;
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if (w > 32767 || h > 32767)
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return NullPixmap;
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if (!glamor_check_fbo_size(glamor_priv, w,h)
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|| !glamor_check_fbo_depth(depth)
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|| usage == GLAMOR_CREATE_PIXMAP_CPU) {
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/* MESA can only support upto MAX_WIDTH*MAX_HEIGHT fbo.
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If we exceed such limitation, we have to use framebuffer.*/
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type = GLAMOR_PIXMAP_MEMORY;
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pixmap = fbCreatePixmap (screen, w, h, depth, usage);
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screen->ModifyPixmapHeader(pixmap, w, h, 0, 0,
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(((w * pixmap->drawable.bitsPerPixel +
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7) / 8) + 3) & ~3,
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NULL);
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#if 0
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if (usage != GLAMOR_CREATE_PIXMAP_CPU)
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glamor_fallback("choose cpu memory for pixmap %p ,"
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" %d x %d depth %d\n", pixmap, w, h, depth);
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#endif
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} else
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pixmap = fbCreatePixmap (screen, 0, 0, depth, usage);
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if (dixAllocatePrivates(&pixmap->devPrivates, PRIVATE_PIXMAP) != TRUE) {
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fbDestroyPixmap(pixmap);
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ErrorF("Fail to allocate privates for PIXMAP.\n");
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return NullPixmap;
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}
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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pixmap_priv->container = pixmap;
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pixmap_priv->glamor_priv = glamor_priv;
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if (w == 0 || h == 0 || type == GLAMOR_PIXMAP_MEMORY)
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return pixmap;
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switch (depth) {
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#if 0
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case 8:
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format = GL_ALPHA;
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break;
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#endif
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case 24:
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format = GL_RGB;
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break;
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default:
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format = GL_RGBA;
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break;
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}
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/* Create the texture used to store the pixmap's data. */
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dispatch->glGenTextures(1, &tex);
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dispatch->glBindTexture(GL_TEXTURE_2D, tex);
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dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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dispatch->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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dispatch->glTexImage2D(GL_TEXTURE_2D, 0, format, w, h, 0,
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format, GL_UNSIGNED_BYTE, NULL);
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glamor_set_pixmap_texture(pixmap, w, h, tex);
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return pixmap;
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}
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/**
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* For Xephyr use only. set up the screen pixmap to correct state.
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**/
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static PixmapPtr
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glamor_create_screen_pixmap(ScreenPtr screen, int w, int h, int depth,
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unsigned int usage)
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{
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PixmapPtr pixmap;
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glamor_pixmap_private *pixmap_priv;
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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assert(w ==0 && h == 0);
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glamor_priv->screen_fbo = 0;
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pixmap = fbCreatePixmap (screen, 0, 0, depth, usage);
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if (dixAllocatePrivates(&pixmap->devPrivates, PRIVATE_PIXMAP) != TRUE) {
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fbDestroyPixmap(pixmap);
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ErrorF("Fail to allocate privates for PIXMAP.\n");
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return NullPixmap;
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}
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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pixmap_priv->tex = 0;
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pixmap_priv->gl_fbo = 1;
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pixmap_priv->gl_tex = 0;
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pixmap_priv->container = pixmap;
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pixmap_priv->pending_op.type = GLAMOR_PENDING_NONE;
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screen->CreatePixmap = glamor_create_pixmap;
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return pixmap;
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}
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static Bool
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glamor_destroy_pixmap(PixmapPtr pixmap)
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{
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glamor_screen_private *glamor_priv = glamor_get_screen_private(pixmap->drawable.pScreen);
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glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;
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if (pixmap->refcnt == 1) {
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glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
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if (pixmap_priv->fb)
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dispatch->glDeleteFramebuffers(1, &pixmap_priv->fb);
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if (pixmap_priv->tex)
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dispatch->glDeleteTextures(1, &pixmap_priv->tex);
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if (pixmap_priv->pbo)
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dispatch->glDeleteBuffers(1, &pixmap_priv->pbo);
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dixFreePrivates(pixmap->devPrivates, PRIVATE_PIXMAP);
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}
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return fbDestroyPixmap(pixmap);
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}
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static void
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glamor_block_handler(void *data, OSTimePtr timeout, void *last_select_mask)
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{
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glamor_gl_dispatch *dispatch = data;
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dispatch->glFlush();
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}
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static void
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glamor_wakeup_handler(void *data, int result, void *last_select_mask)
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{
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}
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static void
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glamor_set_debug_level(int *debug_level)
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{
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char *debug_level_string;
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debug_level_string = getenv("GLAMOR_DEBUG");
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if (debug_level_string && sscanf(debug_level_string, "%d", debug_level) == 1)
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return;
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*debug_level = 0;
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}
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int glamor_debug_level;
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/** Set up glamor for an already-configured GL context. */
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Bool
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glamor_init(ScreenPtr screen, unsigned int flags)
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{
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glamor_screen_private *glamor_priv;
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int gl_version;
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#ifdef RENDER
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PictureScreenPtr ps = GetPictureScreenIfSet(screen);
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#endif
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if (flags & ~GLAMOR_VALID_FLAGS) {
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ErrorF("glamor_init: Invalid flags %x\n", flags);
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return FALSE;
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}
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glamor_priv = calloc(1, sizeof(*glamor_priv));
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if (glamor_priv == NULL)
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return FALSE;
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if (flags & GLAMOR_INVERTED_Y_AXIS) {
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glamor_priv->yInverted = 1;
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} else
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glamor_priv->yInverted = 0;
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if (!dixRegisterPrivateKey(glamor_screen_private_key,PRIVATE_SCREEN,
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0)) {
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LogMessage(X_WARNING,
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"glamor%d: Failed to allocate screen private\n",
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screen->myNum);
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goto fail;
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}
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dixSetPrivate(&screen->devPrivates, glamor_screen_private_key, glamor_priv);
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if (!dixRegisterPrivateKey(glamor_pixmap_private_key,PRIVATE_PIXMAP,
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sizeof(glamor_pixmap_private))) {
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LogMessage(X_WARNING,
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"glamor%d: Failed to allocate pixmap private\n",
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screen->myNum);
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goto fail;;
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}
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gl_version = glamor_gl_get_version();
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#ifndef GLAMOR_GLES2
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if (gl_version < GLAMOR_GL_VERSION_ENCODE(1,3)) {
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ErrorF("Require OpenGL version 1.3 or latter.\n");
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goto fail;
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}
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#else
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if (gl_version < GLAMOR_GL_VERSION_ENCODE(2,0)) {
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ErrorF("Require Open GLES2.0 or latter.\n");
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goto fail;
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}
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#endif
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glamor_gl_dispatch_init(screen, &glamor_priv->dispatch, gl_version);
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#ifdef GLAMOR_GLES2
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if (!glamor_gl_has_extension("GL_EXT_texture_format_BGRA8888")) {
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ErrorF("GL_EXT_texture_format_BGRA8888 required\n");
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goto fail;
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}
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#endif
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glamor_priv->has_pack_invert = glamor_gl_has_extension("GL_MESA_pack_invert");
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glamor_priv->has_fbo_blit = glamor_gl_has_extension("GL_EXT_framebuffer_blit");
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glamor_priv->dispatch.glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE, &glamor_priv->max_fbo_size);
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if (!RegisterBlockAndWakeupHandlers(glamor_block_handler,
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glamor_wakeup_handler,
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(void*)&glamor_priv->dispatch)) {
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goto fail;
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}
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glamor_set_debug_level(&glamor_debug_level);
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glamor_priv->saved_close_screen = screen->CloseScreen;
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screen->CloseScreen = glamor_close_screen;
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glamor_priv->saved_create_gc = screen->CreateGC;
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screen->CreateGC = glamor_create_gc;
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glamor_priv->saved_create_pixmap = screen->CreatePixmap;
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if (flags & GLAMOR_HOSTX)
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screen->CreatePixmap = glamor_create_screen_pixmap;
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else
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screen->CreatePixmap = glamor_create_pixmap;
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glamor_priv->saved_destroy_pixmap = screen->DestroyPixmap;
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screen->DestroyPixmap = glamor_destroy_pixmap;
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glamor_priv->saved_get_spans = screen->GetSpans;
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screen->GetSpans = glamor_get_spans;
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glamor_priv->saved_get_image = screen->GetImage;
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screen->GetImage = miGetImage;
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glamor_priv->saved_change_window_attributes = screen->ChangeWindowAttributes;
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screen->ChangeWindowAttributes = glamor_change_window_attributes;
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glamor_priv->saved_copy_window = screen->CopyWindow;
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screen->CopyWindow = glamor_copy_window;
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glamor_priv->saved_bitmap_to_region = screen->BitmapToRegion;
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screen->BitmapToRegion = glamor_bitmap_to_region;
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#ifdef RENDER
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glamor_priv->saved_composite = ps->Composite;
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ps->Composite = glamor_composite;
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glamor_priv->saved_trapezoids = ps->Trapezoids;
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ps->Trapezoids = glamor_trapezoids;
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glamor_priv->saved_glyphs = ps->Glyphs;
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ps->Glyphs = glamor_glyphs;
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glamor_priv->saved_triangles = ps->Triangles;
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ps->Triangles = glamor_triangles;
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glamor_init_composite_shaders(screen);
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glamor_priv->saved_create_picture = ps->CreatePicture;
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ps->CreatePicture = glamor_create_picture;
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glamor_priv->saved_destroy_picture = ps->DestroyPicture;
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ps->DestroyPicture = glamor_destroy_picture;
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glamor_priv->saved_unrealize_glyph = ps->UnrealizeGlyph;
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ps->UnrealizeGlyph = glamor_glyph_unrealize;
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#endif
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glamor_init_solid_shader(screen);
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glamor_init_tile_shader(screen);
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glamor_init_putimage_shaders(screen);
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glamor_init_finish_access_shaders(screen);
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glamor_pixmap_init(screen);
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#ifdef GLAMOR_GLES2
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glamor_priv->gl_flavor = GLAMOR_GL_ES2;
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#else
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glamor_priv->gl_flavor = GLAMOR_GL_DESKTOP;
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#endif
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return TRUE;
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fail:
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free(glamor_priv);
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dixSetPrivate(&screen->devPrivates, glamor_screen_private_key, NULL);
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return FALSE;
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}
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Bool
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glamor_close_screen(int idx, ScreenPtr screen)
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{
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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#ifdef RENDER
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PictureScreenPtr ps = GetPictureScreenIfSet(screen);
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#endif
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glamor_glyphs_fini(screen);
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screen->CloseScreen = glamor_priv->saved_close_screen;
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screen->CreateGC = glamor_priv->saved_create_gc;
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screen->CreatePixmap = glamor_priv->saved_create_pixmap;
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screen->DestroyPixmap = glamor_priv->saved_destroy_pixmap;
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screen->GetSpans = glamor_priv->saved_get_spans;
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screen->ChangeWindowAttributes = glamor_priv->saved_change_window_attributes;
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screen->CopyWindow = glamor_priv->saved_copy_window;
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screen->BitmapToRegion = glamor_priv->saved_bitmap_to_region;
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#ifdef RENDER
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if (ps) {
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ps->Composite = glamor_priv->saved_composite;
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ps->Trapezoids = glamor_priv->saved_trapezoids;
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ps->Glyphs = glamor_priv->saved_glyphs;
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ps->Triangles = glamor_priv->saved_triangles;
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ps->CreatePicture = glamor_priv->saved_create_picture;
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}
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#endif
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if (glamor_priv->vb)
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free(glamor_priv->vb);
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free(glamor_priv);
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return screen->CloseScreen(idx, screen);
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}
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void
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glamor_fini(ScreenPtr screen)
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{
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/* Do nothing currently. */
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}
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