This was originally to be used by qemu, but we didn't need it in the end.macos/master
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/**************************************************************************
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* |
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* Copyright (C) 2014 Red Hat Inc. |
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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 shall be included |
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* in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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* OR 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 |
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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* OTHER DEALINGS IN THE SOFTWARE. |
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* |
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**************************************************************************/ |
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#ifndef VIRGL_HELPER_H |
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#define VIRGL_HELPER_H |
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#define GREND_EXPORT __attribute__((visibility("default"))) |
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/* add helpers for local renderers - not used by remote viewers */ |
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#define VIRGL_HELPER_Y_0_TOP (1 << 0) |
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GREND_EXPORT void virgl_helper_scanout_info(int idx, |
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uint32_t tex_id, |
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uint32_t flags, |
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int x, int y, |
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uint32_t width, uint32_t height); |
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GREND_EXPORT void virgl_helper_flush_scanout(int idx, |
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int x, int y, |
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uint32_t width, uint32_t height); |
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#endif |
@ -1,96 +0,0 @@ |
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/**************************************************************************
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* |
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* Copyright (C) 2014 Red Hat Inc. |
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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 shall be included |
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* in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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* OR 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 |
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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* OTHER DEALINGS IN THE SOFTWARE. |
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* |
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**************************************************************************/ |
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/* helper library for qemu local renderers like SDL / GTK
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flushes the given texture to the frontbuffer */ |
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#include <epoxy/gl.h> |
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#include "virgl_helper.h" |
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#define MAX_HELPER_SCANOUT 4 |
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static struct helper_scanout { |
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GLuint tex_id; |
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GLuint fb_id; |
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int x, y; |
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uint32_t width, height; |
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unsigned flags; |
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} frontbuf[MAX_HELPER_SCANOUT]; |
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void virgl_helper_scanout_info(int idx, |
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uint32_t tex_id, |
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uint32_t flags, |
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int x, int y, |
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uint32_t width, uint32_t height) |
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{ |
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frontbuf[idx].x = x; |
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frontbuf[idx].y = y; |
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frontbuf[idx].width = width; |
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frontbuf[idx].height = height; |
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frontbuf[idx].tex_id = tex_id; |
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frontbuf[idx].flags = flags; |
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if (tex_id == 0 && width == 0 && height == 0) { |
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if (frontbuf[idx].fb_id) { |
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glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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GL_TEXTURE_2D, 0, 0); |
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glDeleteFramebuffers(1, &frontbuf[idx].fb_id); |
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frontbuf[idx].fb_id = 0; |
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} |
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return; |
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} |
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if (!frontbuf[idx].fb_id) |
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glGenFramebuffers(1, &frontbuf[idx].fb_id); |
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glBindFramebuffer(GL_FRAMEBUFFER_EXT, frontbuf[idx].fb_id); |
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glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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GL_TEXTURE_2D, tex_id, 0); |
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} |
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void virgl_helper_flush_scanout(int idx, |
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int x, int y, |
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uint32_t width, uint32_t height) |
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{ |
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uint32_t sy1, sy2, dy1, dy2; |
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if (!frontbuf[idx].width || !frontbuf[idx].height) |
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return; |
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glBindFramebuffer(GL_READ_FRAMEBUFFER, frontbuf[idx].fb_id); |
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); |
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dy1 = frontbuf[idx].height - y - frontbuf[idx].y; |
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dy2 = frontbuf[idx].height - y - height - frontbuf[idx].y; |
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if (frontbuf[idx].flags & VIRGL_HELPER_Y_0_TOP) { |
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sy1 = frontbuf[idx].height - y; |
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sy2 = frontbuf[idx].height - y - height; |
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} else { |
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sy1 = y; |
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sy2 = y + height; |
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} |
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glViewport(0, 0, frontbuf[idx].width, frontbuf[idx].height); |
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glBlitFramebuffer(x, sy1, x + width, sy2, |
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x - frontbuf[idx].x, dy1, x + width - frontbuf[idx].x, dy2, |
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GL_COLOR_BUFFER_BIT, GL_NEAREST); |
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} |
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