| Priority | medium |
|---|---|
| Bug ID | 82585 |
| Assignee | dri-devel@lists.freedesktop.org |
| Summary | geometry shader with optional out variable segfaults |
| Severity | normal |
| Classification | Unclassified |
| OS | All |
| Reporter | pavol@klacansky.com |
| Hardware | Other |
| Status | NEW |
| Version | git |
| Component | Drivers/Gallium/r600 |
| Product | Mesa |
Running this shader in geometry stage, it segfaults:
#version 330
layout(points) in;
layout(points, max_vertices = 1) out;
in gl_PerVertex {
vec4 gl_Position;
float gl_PointSize;
float gl_ClipDistance[];
} gl_in[];
in vec4 v_colour[];
out vec4 g_colour;
void main() {
for(int i = 0; i < 1; i++) {
gl_Position = gl_in[i].gl_Position;
gl_PrimitiveID = gl_PrimitiveIDIn;
/* TODO report bug */
g_colour = v_colour[i];
EmitVertex();
}
EndPrimitive();
}
Following message is from Valgrind:
EE ../../../../../../src/gallium/drivers/r600/r600_shader.c:353
tgsi_is_supported - unsupported src 0 (dimension 1)
EE ../../../../../../src/gallium/drivers/r600/r600_shader.c:157
r600_pipe_shader_create - translation from TGSI failed !
EE ../../../../../../src/gallium/drivers/r600/r600_state_common.c:750
r600_shader_select - Failed to build shader variant (type=2) -22
| What | Removed | Added |
|---|---|---|
| Hardware | Other | x86-64 (AMD64) |
| OS | All | Linux (All) |
Please provide more details about how to reproduce the problem= . Ideal would be if you could attach a simple test program which we can compile and run, or = at least a command line to reproduce the problem with a standard tool and the geometry shader source code you provided.
| What | Removed | Added |
|---|---|---|
| Assignee | dri-devel@lists.freedesktop.org | mesa-dev@lists.freedesktop.org |
| Component | Drivers/Gallium/r600 | Mesa core |
I'm hitting this assertion failure in the GLSL IR to TGSI tran= slation code first: ../../../src/mesa/state_tracker/st_glsl_to_tgsi.cpp:2157:visit: Assertion `var->data.location !=3D -1' failed.