This bug report was migrated from our old Bugzilla tracker.

Reported in version: 2.0.0
Reported for operating system, platform: Linux, x86_64

Comments on the original bug report:

On 2013-09-28 18:26:00 +0000, Igor Gnatenko wrote:

More info: https://bugzilla.redhat.com/show_bug.cgi?id=1013216

Description of problem:
I want to draw a line, but it displays nothing.

Version-Release number of selected component (if applicable):
Name : SDL2
Version : 2.0.0
Release : 3.fc19
Architecture: x86_64
Install Date: Sat 28 Sep 2013 05:42:57 PM CST
Group : System Environment/Libraries
Size : 912449
License : zlib and MIT
Signature : RSA/SHA256, Sat 24 Aug 2013 11:47:14 PM CST, Key ID 07477e65fb4b18e6
Source RPM : SDL2-2.0.0-3.fc19.src.rpm
Build Date : Sat 24 Aug 2013 05:32:24 PM CST
Build Host : buildvm-22.phx2.fedoraproject.org
Relocations : (not relocatable)
Packager : Fedora Project
Vendor : Fedora Project
URL : http://www.libsdl.org/
Summary : A cross-platform multimedia library

How reproducible:
Compile my code, then run it

Steps to Reproduce:

1. please save the following code to test.cpp

---

#include
#include <SDL.h>
#include <stdio.h>
#include

class SDL {
public:
SDL(Uint32 flags = 0);
virtual ~SDL();
};

SDL::SDL(Uint32 flags) {
if (SDL_Init(flags) != 0)
throw std::runtime_error(SDL_GetError());
}

SDL::~SDL() {
SDL_Quit();
}

int main(){
//SDL_SetHint(SDL_HINT_RENDER_DRIVER,"software");
SDL_LogSetAllPriority(SDL_LOG_PRIORITY_INFO);
SDL sdl(SDL_INIT_EVERYTHING);

//create window
SDL_Window *win = SDL_CreateWindow("Hello World!", 100, 100, 640, 480, SDL_WINDOW_SHOWN);
if(!win){
std::cout << "SDL_CreateWindow Error: " << SDL_GetError() << std::endl;
return -1;
}
printf("debug %d\n",(int)LINE);
//create render
SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
//SDL_Renderer *ren = SDL_CreateRenderer(win, -1, 0);
if (!ren){
std::cout << "SDL_CreateRenderer Error: " << SDL_GetError() << std::endl;
return 1;
}
printf("debug %d\n",(int)LINE);

//clear the render
SDL_SetRenderDrawColor(ren, 255, 255, 0, 255);
SDL_RenderClear(ren);
//render our texture to render
SDL_SetRenderDrawColor(ren, 0xFF, 0xFF, 0xFF, 0xFF);
int ret=SDL_RenderDrawLine(ren,0,0,500,500);
if(ret){
std::cout << "SDL_CreateTextureFromSurface Error: " << SDL_GetError() << std::endl;
return -1;
}
//update the screen
SDL_RenderPresent(ren);

SDL_Delay(4000);

SDL_DestroyRenderer(ren);
SDL_DestroyWindow(win);
return 0;
}

2. compile the code
   Before compile, you need SDL2-devel and g++ installed.
   g++ -Wall -Wextra -D_REENTRANT -I/usr/include/SDL2 test.cpp -o t -lSDL2 -lpthread

3. run it
   ./t

Actual results:
Yes, no lines.
And the debug output told us:

debug 32
ERROR: glxSwapIntervalMESA failed
INFO: OpenGL shaders: ENABLED
INFO: Created renderer: opengl
debug 40

Expected results:
There should be a line inside the window.

Additional info:
If we change the render driver from opengl to software (add this line to the beginning of main function)
SDL_SetHint(SDL_HINT_RENDER_DRIVER,"software");

All things are right.

So, this is a problem of SDL2's opengl driver.

Test Env:
vmware workstation 9.0.1 build-894247 (Host OS: windows 7 x86_64)

glxinfo

name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_multisample, GLX_EXT_create_context_es2_profile,
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer,
GLX_OML_swap_method, GLX_SGIS_multisample, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float,
GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample,
GLX_EXT_create_context_es2_profile, GLX_EXT_fbconfig_packed_float,
GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context,
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer,
GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control,
GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync
GLX version: 1.4
GLX extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_get_proc_address, GLX_ARB_multisample,
GLX_EXT_create_context_es2_profile, GLX_EXT_import_context,
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_MESA_copy_sub_buffer, GLX_MESA_multithread_makecurrent,
GLX_MESA_swap_control, GLX_OML_swap_method, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,
GLX_SGI_make_current_read, GLX_SGI_video_sync
OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on SVGA3D; build: RELEASE;
OpenGL version string: 2.1 Mesa 9.2.0
OpenGL shading language version string: 1.20
OpenGL extensions:
GL_APPLE_packed_pixels, GL_APPLE_vertex_array_object,
GL_ARB_ES2_compatibility, GL_ARB_color_buffer_float, GL_ARB_copy_buffer,
GL_ARB_debug_output, GL_ARB_depth_texture, GL_ARB_draw_buffers,
GL_ARB_draw_elements_base_vertex, GL_ARB_explicit_attrib_location,
GL_ARB_fragment_coord_conventions, GL_ARB_fragment_program,
GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader,
GL_ARB_framebuffer_object, GL_ARB_framebuffer_sRGB,
GL_ARB_get_program_binary, GL_ARB_half_float_pixel,
GL_ARB_half_float_vertex, GL_ARB_internalformat_query,
GL_ARB_invalidate_subdata, GL_ARB_map_buffer_range, GL_ARB_multisample,
GL_ARB_multitexture, GL_ARB_occlusion_query, GL_ARB_occlusion_query2,
GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite,
GL_ARB_provoking_vertex, GL_ARB_robustness, GL_ARB_sampler_objects,
GL_ARB_shader_objects, GL_ARB_shading_language_100, GL_ARB_shadow,
GL_ARB_sync, GL_ARB_texture_border_clamp, GL_ARB_texture_compression,
GL_ARB_texture_cube_map, GL_ARB_texture_env_add,
GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar,
GL_ARB_texture_env_dot3, GL_ARB_texture_float,
GL_ARB_texture_mirrored_repeat, GL_ARB_texture_non_power_of_two,
GL_ARB_texture_rectangle, GL_ARB_texture_storage, GL_ARB_texture_swizzle,
GL_ARB_transpose_matrix, GL_ARB_vertex_array_bgra,
GL_ARB_vertex_array_object, GL_ARB_vertex_buffer_object,
GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ARB_window_pos,
GL_ATI_blend_equation_separate, GL_ATI_draw_buffers,
GL_ATI_separate_stencil, GL_ATI_texture_env_combine3,
GL_ATI_texture_float, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color,
GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate,
GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array,
GL_EXT_copy_texture, GL_EXT_draw_range_elements, GL_EXT_fog_coord,
GL_EXT_framebuffer_blit, GL_EXT_framebuffer_object,
GL_EXT_framebuffer_sRGB, GL_EXT_gpu_program_parameters,
GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil,
GL_EXT_packed_pixels, GL_EXT_pixel_buffer_object, GL_EXT_point_parameters,
GL_EXT_polygon_offset, GL_EXT_provoking_vertex, GL_EXT_rescale_normal,
GL_EXT_secondary_color, GL_EXT_separate_specular_color,
GL_EXT_shadow_funcs, GL_EXT_stencil_two_side, GL_EXT_stencil_wrap,
GL_EXT_subtexture, GL_EXT_texture, GL_EXT_texture3D,
GL_EXT_texture_cube_map, GL_EXT_texture_edge_clamp,
GL_EXT_texture_env_add, GL_EXT_texture_env_combine,
GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic,
GL_EXT_texture_lod_bias, GL_EXT_texture_object, GL_EXT_texture_rectangle,
GL_EXT_texture_sRGB, GL_EXT_texture_sRGB_decode, GL_EXT_texture_swizzle,
GL_EXT_vertex_array, GL_EXT_vertex_array_bgra,
GL_IBM_multimode_draw_arrays, GL_IBM_rasterpos_clip,
GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate,
GL_MESA_pack_invert, GL_MESA_window_pos, GL_NV_blend_square,
GL_NV_fog_distance, GL_NV_light_max_exponent, GL_NV_packed_depth_stencil,
GL_NV_primitive_restart, GL_NV_texgen_reflection,
GL_NV_texture_env_combine4, GL_NV_texture_rectangle, GL_OES_EGL_image,
GL_OES_read_format, GL_SGIS_generate_mipmap, GL_SGIS_texture_border_clamp,
GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays

On 2015-02-19 05:22:19 +0000, Ryan C. Gordon wrote:

Marking a large number of bugs with the "triage-2.0.4" keyword at once. Sorry if you got a lot of email from this. This is to help me sort through some bugs in regards to a 2.0.4 release. We may or may not fix this bug for 2.0.4, though!

On 2018-08-06 21:20:21 +0000, Ryan C. Gordon wrote:

Hello, and sorry if you're getting dozens of copies of this message by email.

We are closing out bugs that appear to be abandoned in some form. This can happen for lots of reasons: we couldn't reproduce it, conversation faded out, the bug was noted as fixed in a comment but we forgot to mark it resolved, the report is good but the fix is impractical, we fixed it a long time ago without realizing there was an associated report, etc.

Individually, any of these bugs might have a better resolution (such as WONTFIX or WORKSFORME or INVALID) but we've added a new resolution of ABANDONED to make this easily searchable and make it clear that it's not necessarily unreasonable to revive a given bug report.

So if this bug is still a going concern and you feel it should still be open: please feel free to reopen it! But unless you respond, we'd like to consider these bugs closed, as many of them are several years old and overwhelming our ability to prioritize recent issues.

(please note that hundred of bug reports were sorted through here, so we apologize for any human error. Just reopen the bug in that case!)

Thanks,
--ryan.