Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QEMU graphical console -- opengl helper bits |
| 3 | * |
| 4 | * Copyright (c) 2014 Red Hat |
| 5 | * |
| 6 | * Authors: |
| 7 | * Gerd Hoffmann <kraxel@redhat.com> |
| 8 | * |
| 9 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 10 | * of this software and associated documentation files (the "Software"), to deal |
| 11 | * in the Software without restriction, including without limitation the rights |
| 12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 13 | * copies of the Software, and to permit persons to whom the Software is |
| 14 | * furnished to do so, subject to the following conditions: |
| 15 | * |
| 16 | * The above copyright notice and this permission notice shall be included in |
| 17 | * all copies or substantial portions of the Software. |
| 18 | * |
| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 22 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 25 | * THE SOFTWARE. |
| 26 | */ |
Peter Maydell | e16f4c8 | 2016-01-29 17:49:51 +0000 | [diff] [blame] | 27 | #include "qemu/osdep.h" |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 28 | #include "qemu-common.h" |
| 29 | #include "ui/console.h" |
| 30 | #include "ui/shader.h" |
| 31 | |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 32 | /* ---------------------------------------------------------------------- */ |
| 33 | |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 34 | bool console_gl_check_format(DisplayChangeListener *dcl, |
| 35 | pixman_format_code_t format) |
| 36 | { |
| 37 | switch (format) { |
| 38 | case PIXMAN_BE_b8g8r8x8: |
| 39 | case PIXMAN_BE_b8g8r8a8: |
| 40 | case PIXMAN_r5g6b5: |
| 41 | return true; |
| 42 | default: |
| 43 | return false; |
| 44 | } |
| 45 | } |
| 46 | |
Gerd Hoffmann | 46e19e1 | 2017-10-10 15:54:49 +0200 | [diff] [blame] | 47 | void surface_gl_create_texture(QemuGLShader *gls, |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 48 | DisplaySurface *surface) |
| 49 | { |
| 50 | assert(gls); |
Philippe Mathieu-Daudé | 2e9a856 | 2017-07-18 03:09:44 -0300 | [diff] [blame] | 51 | assert(QEMU_IS_ALIGNED(surface_stride(surface), surface_bytes_per_pixel(surface))); |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 52 | |
| 53 | switch (surface->format) { |
| 54 | case PIXMAN_BE_b8g8r8x8: |
| 55 | case PIXMAN_BE_b8g8r8a8: |
| 56 | surface->glformat = GL_BGRA_EXT; |
| 57 | surface->gltype = GL_UNSIGNED_BYTE; |
| 58 | break; |
Thomas Huth | 2c2311c | 2016-06-06 22:01:01 +0200 | [diff] [blame] | 59 | case PIXMAN_BE_x8r8g8b8: |
| 60 | case PIXMAN_BE_a8r8g8b8: |
| 61 | surface->glformat = GL_RGBA; |
| 62 | surface->gltype = GL_UNSIGNED_BYTE; |
| 63 | break; |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 64 | case PIXMAN_r5g6b5: |
| 65 | surface->glformat = GL_RGB; |
| 66 | surface->gltype = GL_UNSIGNED_SHORT_5_6_5; |
| 67 | break; |
| 68 | default: |
| 69 | g_assert_not_reached(); |
| 70 | } |
| 71 | |
| 72 | glGenTextures(1, &surface->texture); |
| 73 | glEnable(GL_TEXTURE_2D); |
| 74 | glBindTexture(GL_TEXTURE_2D, surface->texture); |
| 75 | glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, |
| 76 | surface_stride(surface) / surface_bytes_per_pixel(surface)); |
| 77 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, |
| 78 | surface_width(surface), |
| 79 | surface_height(surface), |
| 80 | 0, surface->glformat, surface->gltype, |
| 81 | surface_data(surface)); |
| 82 | |
| 83 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| 84 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| 85 | } |
| 86 | |
Gerd Hoffmann | 46e19e1 | 2017-10-10 15:54:49 +0200 | [diff] [blame] | 87 | void surface_gl_update_texture(QemuGLShader *gls, |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 88 | DisplaySurface *surface, |
| 89 | int x, int y, int w, int h) |
| 90 | { |
| 91 | uint8_t *data = (void *)surface_data(surface); |
| 92 | |
| 93 | assert(gls); |
| 94 | |
| 95 | glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, |
| 96 | surface_stride(surface) / surface_bytes_per_pixel(surface)); |
| 97 | glTexSubImage2D(GL_TEXTURE_2D, 0, |
| 98 | x, y, w, h, |
| 99 | surface->glformat, surface->gltype, |
| 100 | data + surface_stride(surface) * y |
| 101 | + surface_bytes_per_pixel(surface) * x); |
| 102 | } |
| 103 | |
Gerd Hoffmann | 46e19e1 | 2017-10-10 15:54:49 +0200 | [diff] [blame] | 104 | void surface_gl_render_texture(QemuGLShader *gls, |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 105 | DisplaySurface *surface) |
| 106 | { |
| 107 | assert(gls); |
| 108 | |
| 109 | glClearColor(0.1f, 0.1f, 0.1f, 0.0f); |
| 110 | glClear(GL_COLOR_BUFFER_BIT); |
| 111 | |
Gerd Hoffmann | 2e1d70b | 2017-10-10 15:54:50 +0200 | [diff] [blame] | 112 | qemu_gl_run_texture_blit(gls, false); |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 113 | } |
| 114 | |
Gerd Hoffmann | 46e19e1 | 2017-10-10 15:54:49 +0200 | [diff] [blame] | 115 | void surface_gl_destroy_texture(QemuGLShader *gls, |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 116 | DisplaySurface *surface) |
| 117 | { |
| 118 | if (!surface || !surface->texture) { |
| 119 | return; |
| 120 | } |
| 121 | glDeleteTextures(1, &surface->texture); |
| 122 | surface->texture = 0; |
| 123 | } |
| 124 | |
Gerd Hoffmann | 46e19e1 | 2017-10-10 15:54:49 +0200 | [diff] [blame] | 125 | void surface_gl_setup_viewport(QemuGLShader *gls, |
Gerd Hoffmann | cd2bc88 | 2015-01-09 11:40:23 +0100 | [diff] [blame] | 126 | DisplaySurface *surface, |
| 127 | int ww, int wh) |
| 128 | { |
| 129 | int gw, gh, stripe; |
| 130 | float sw, sh; |
| 131 | |
| 132 | assert(gls); |
| 133 | |
| 134 | gw = surface_width(surface); |
| 135 | gh = surface_height(surface); |
| 136 | |
| 137 | sw = (float)ww/gw; |
| 138 | sh = (float)wh/gh; |
| 139 | if (sw < sh) { |
| 140 | stripe = wh - wh*sw/sh; |
| 141 | glViewport(0, stripe / 2, ww, wh - stripe); |
| 142 | } else { |
| 143 | stripe = ww - ww*sh/sw; |
| 144 | glViewport(stripe / 2, 0, ww - stripe, wh); |
| 145 | } |
| 146 | } |