virtio-pci: Set the QEMU_PCI_CAP_EXPRESS capability early in its DeviceClass realize...
[qemu/ar7.git] / ui / console-gl.c
blobbaf397b300aa628c7342e501b5dbc17c4790a941
1 /*
2 * QEMU graphical console -- opengl helper bits
4 * Copyright (c) 2014 Red Hat
6 * Authors:
7 * Gerd Hoffmann <kraxel@redhat.com>
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:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
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.
27 #include "qemu-common.h"
28 #include "ui/console.h"
29 #include "ui/shader.h"
31 #include "shader/texture-blit-vert.h"
32 #include "shader/texture-blit-frag.h"
34 struct ConsoleGLState {
35 GLint texture_blit_prog;
36 GLint texture_blit_vao;
39 /* ---------------------------------------------------------------------- */
41 ConsoleGLState *console_gl_init_context(void)
43 ConsoleGLState *gls = g_new0(ConsoleGLState, 1);
45 gls->texture_blit_prog = qemu_gl_create_compile_link_program
46 (texture_blit_vert_src, texture_blit_frag_src);
47 if (!gls->texture_blit_prog) {
48 exit(1);
51 gls->texture_blit_vao =
52 qemu_gl_init_texture_blit(gls->texture_blit_prog);
54 return gls;
57 void console_gl_fini_context(ConsoleGLState *gls)
59 if (!gls) {
60 return;
62 g_free(gls);
65 bool console_gl_check_format(DisplayChangeListener *dcl,
66 pixman_format_code_t format)
68 switch (format) {
69 case PIXMAN_BE_b8g8r8x8:
70 case PIXMAN_BE_b8g8r8a8:
71 case PIXMAN_r5g6b5:
72 return true;
73 default:
74 return false;
78 void surface_gl_create_texture(ConsoleGLState *gls,
79 DisplaySurface *surface)
81 assert(gls);
82 assert(surface_stride(surface) % surface_bytes_per_pixel(surface) == 0);
84 switch (surface->format) {
85 case PIXMAN_BE_b8g8r8x8:
86 case PIXMAN_BE_b8g8r8a8:
87 surface->glformat = GL_BGRA_EXT;
88 surface->gltype = GL_UNSIGNED_BYTE;
89 break;
90 case PIXMAN_r5g6b5:
91 surface->glformat = GL_RGB;
92 surface->gltype = GL_UNSIGNED_SHORT_5_6_5;
93 break;
94 default:
95 g_assert_not_reached();
98 glGenTextures(1, &surface->texture);
99 glEnable(GL_TEXTURE_2D);
100 glBindTexture(GL_TEXTURE_2D, surface->texture);
101 glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT,
102 surface_stride(surface) / surface_bytes_per_pixel(surface));
103 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
104 surface_width(surface),
105 surface_height(surface),
106 0, surface->glformat, surface->gltype,
107 surface_data(surface));
109 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
110 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
113 void surface_gl_update_texture(ConsoleGLState *gls,
114 DisplaySurface *surface,
115 int x, int y, int w, int h)
117 uint8_t *data = (void *)surface_data(surface);
119 assert(gls);
121 glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT,
122 surface_stride(surface) / surface_bytes_per_pixel(surface));
123 glTexSubImage2D(GL_TEXTURE_2D, 0,
124 x, y, w, h,
125 surface->glformat, surface->gltype,
126 data + surface_stride(surface) * y
127 + surface_bytes_per_pixel(surface) * x);
130 void surface_gl_render_texture(ConsoleGLState *gls,
131 DisplaySurface *surface)
133 assert(gls);
135 glClearColor(0.1f, 0.1f, 0.1f, 0.0f);
136 glClear(GL_COLOR_BUFFER_BIT);
138 qemu_gl_run_texture_blit(gls->texture_blit_prog,
139 gls->texture_blit_vao);
142 void surface_gl_destroy_texture(ConsoleGLState *gls,
143 DisplaySurface *surface)
145 if (!surface || !surface->texture) {
146 return;
148 glDeleteTextures(1, &surface->texture);
149 surface->texture = 0;
152 void surface_gl_setup_viewport(ConsoleGLState *gls,
153 DisplaySurface *surface,
154 int ww, int wh)
156 int gw, gh, stripe;
157 float sw, sh;
159 assert(gls);
161 gw = surface_width(surface);
162 gh = surface_height(surface);
164 sw = (float)ww/gw;
165 sh = (float)wh/gh;
166 if (sw < sh) {
167 stripe = wh - wh*sw/sh;
168 glViewport(0, stripe / 2, ww, wh - stripe);
169 } else {
170 stripe = ww - ww*sh/sw;
171 glViewport(stripe / 2, 0, ww - stripe, wh);