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get error log of shader if it fails to compile #137

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get error log of shader if it fails to compile #137

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29c3487
get error log of shader if it fails to compile
Inconn Mar 26, 2023
b84c0ad
neaten error message
Inconn Mar 26, 2023
f7c17ad
also add log for when gl program fails to link
Inconn Mar 26, 2023
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14 changes: 14 additions & 0 deletions sway/desktop/fx_renderer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -107,6 +107,13 @@ static GLuint compile_shader(GLuint type, const GLchar **srcs, size_t srcs_len)
glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
if (ok == GL_FALSE) {
sway_log(SWAY_ERROR, "Failed to compile shader");

char log[1024];
GLsizei length = 0;
glGetShaderInfoLog(shader, 1024, &length, log);
log[length-1] = '\0';
sway_log(SWAY_ERROR, "Error log: \"%s\"", log);

glDeleteShader(shader);
shader = 0;
}
Expand Down Expand Up @@ -151,6 +158,13 @@ static GLuint link_program(const GLchar *frag_src, enum fx_gles2_shader_source s
glGetProgramiv(prog, GL_LINK_STATUS, &ok);
if (ok == GL_FALSE) {
sway_log(SWAY_ERROR, "Failed to link shader");

char log[1024];
GLsizei length = 0;
glGetProgramInfoLog(prog, 1024, &length, log);
log[length-1] = '\0';
sway_log(SWAY_ERROR, "Error log: \"%s\"", log);

glDeleteProgram(prog);
goto error;
}
Expand Down