80486DX2-66/86Box-fork
1
0
Fork 0
Code Issues Pull Requests Activity

win_opengl: Fix out-of-bounds texture transfer when y2 is bigger than height.

Browse Source
This commit is contained in:
ts-korhonen
2021-05-08 13:04:53 +03:00
committed by David Hrdlička
parent 0361709ada
commit 0ded806fe9
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/win/win_opengl.c
View File

@@ -625,15 +625,18 @@ static void opengl_main(void* param)
SetEvent(sync_objects.resize);
}
/* Clip to height. y2 can be out-of-bounds. */
int sub_height = MIN(info->y2 - info->y1, info->h - info->y1);
if (!GLAD_GL_ARB_buffer_storage)
{
/* Fallback method, copy data to pixel buffer. */
glBufferSubData(GL_PIXEL_UNPACK_BUFFER, BUFFERBYTES * read_pos, info->w * (info->y2 - info->y1) * sizeof(uint32_t), info->buffer);
glBufferSubData(GL_PIXEL_UNPACK_BUFFER, BUFFERBYTES * read_pos, info->w * sub_height * sizeof(uint32_t), info->buffer);
}
/* Update texture from pixel buffer. */
glPixelStorei(GL_UNPACK_SKIP_PIXELS, BUFFERPIXELS * read_pos);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, info->y1, info->w, info->y2 - info->y1, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, info->y1, info->w, sub_height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
/* Add fence to track when above gl commands are complete. */
info->sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);