150 lines
4.7 KiB
C
150 lines
4.7 KiB
C
/*
|
|
* QEMU graphical console -- opengl helper bits
|
|
*
|
|
* Copyright (c) 2014 Red Hat
|
|
*
|
|
* Authors:
|
|
* Gerd Hoffmann <kraxel@redhat.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#include "qemu/osdep.h"
|
|
#include "ui/console.h"
|
|
#include "ui/shader.h"
|
|
|
|
/* ---------------------------------------------------------------------- */
|
|
|
|
bool console_gl_check_format(DisplayChangeListener *dcl,
|
|
pixman_format_code_t format)
|
|
{
|
|
switch (format) {
|
|
case PIXMAN_BE_b8g8r8x8:
|
|
case PIXMAN_BE_b8g8r8a8:
|
|
case PIXMAN_r5g6b5:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void surface_gl_create_texture(QemuGLShader *gls,
|
|
DisplaySurface *surface)
|
|
{
|
|
assert(gls);
|
|
assert(QEMU_IS_ALIGNED(surface_stride(surface), surface_bytes_per_pixel(surface)));
|
|
|
|
switch (surface->format) {
|
|
case PIXMAN_BE_b8g8r8x8:
|
|
case PIXMAN_BE_b8g8r8a8:
|
|
surface->glformat = GL_BGRA_EXT;
|
|
surface->gltype = GL_UNSIGNED_BYTE;
|
|
break;
|
|
case PIXMAN_BE_x8r8g8b8:
|
|
case PIXMAN_BE_a8r8g8b8:
|
|
surface->glformat = GL_RGBA;
|
|
surface->gltype = GL_UNSIGNED_BYTE;
|
|
break;
|
|
case PIXMAN_r5g6b5:
|
|
surface->glformat = GL_RGB;
|
|
surface->gltype = GL_UNSIGNED_SHORT_5_6_5;
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
glGenTextures(1, &surface->texture);
|
|
glEnable(GL_TEXTURE_2D);
|
|
glBindTexture(GL_TEXTURE_2D, surface->texture);
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT,
|
|
surface_stride(surface) / surface_bytes_per_pixel(surface));
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
|
|
surface_width(surface),
|
|
surface_height(surface),
|
|
0, surface->glformat, surface->gltype,
|
|
surface_data(surface));
|
|
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
}
|
|
|
|
void surface_gl_update_texture(QemuGLShader *gls,
|
|
DisplaySurface *surface,
|
|
int x, int y, int w, int h)
|
|
{
|
|
uint8_t *data = (void *)surface_data(surface);
|
|
|
|
assert(gls);
|
|
|
|
if (surface->texture) {
|
|
glBindTexture(GL_TEXTURE_2D, surface->texture);
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT,
|
|
surface_stride(surface)
|
|
/ surface_bytes_per_pixel(surface));
|
|
glTexSubImage2D(GL_TEXTURE_2D, 0,
|
|
x, y, w, h,
|
|
surface->glformat, surface->gltype,
|
|
data + surface_stride(surface) * y
|
|
+ surface_bytes_per_pixel(surface) * x);
|
|
}
|
|
}
|
|
|
|
void surface_gl_render_texture(QemuGLShader *gls,
|
|
DisplaySurface *surface)
|
|
{
|
|
assert(gls);
|
|
|
|
glClearColor(0.1f, 0.1f, 0.1f, 0.0f);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
qemu_gl_run_texture_blit(gls, false);
|
|
}
|
|
|
|
void surface_gl_destroy_texture(QemuGLShader *gls,
|
|
DisplaySurface *surface)
|
|
{
|
|
if (!surface || !surface->texture) {
|
|
return;
|
|
}
|
|
glDeleteTextures(1, &surface->texture);
|
|
surface->texture = 0;
|
|
}
|
|
|
|
void surface_gl_setup_viewport(QemuGLShader *gls,
|
|
DisplaySurface *surface,
|
|
int ww, int wh)
|
|
{
|
|
int gw, gh, stripe;
|
|
float sw, sh;
|
|
|
|
assert(gls);
|
|
|
|
gw = surface_width(surface);
|
|
gh = surface_height(surface);
|
|
|
|
sw = (float)ww/gw;
|
|
sh = (float)wh/gh;
|
|
if (sw < sh) {
|
|
stripe = wh - wh*sw/sh;
|
|
glViewport(0, stripe / 2, ww, wh - stripe);
|
|
} else {
|
|
stripe = ww - ww*sh/sw;
|
|
glViewport(stripe / 2, 0, ww - stripe, wh);
|
|
}
|
|
}
|